diff --git a/.circleci/config.yml b/.circleci/config.yml index 083cbd7d080..dddca475fab 100644 --- a/.circleci/config.yml +++ b/.circleci/config.yml @@ -8,6 +8,7 @@ jobs: steps: - checkout - setup_remote_docker + - run: make test - run: make build - run: make publish-edge-chart - store_artifacts: diff --git a/Gopkg.lock b/Gopkg.lock index ac94abbc2db..b57ff9c5d77 100644 --- a/Gopkg.lock +++ b/Gopkg.lock @@ -337,6 +337,22 @@ revision = "b3e2804c8535ee0d1b89320afd98474d5b8e9e3b" version = "v0.19.0" +[[projects]] + digest = "1:de44b2850368432628bec4f956a629e943af9ebe7449c1d80a3a5b6556869bb8" + name = "github.com/go-redis/redis" + packages = [ + ".", + "internal", + "internal/consistenthash", + "internal/hashtag", + "internal/pool", + "internal/proto", + "internal/util", + ] + pruneopts = "NUT" + revision = "75795aa4236dc7341eefac3bbe945e68c99ef9df" + version = "v6.15.3" + [[projects]] digest = "1:37234906013da82d4c05666262eda5bdec8f736bafa7d4ec1fb3314e965b476f" name = "github.com/gogo/protobuf" @@ -1297,8 +1313,10 @@ "github.com/Shopify/sarama", "github.com/Sirupsen/logrus", "github.com/aws/aws-sdk-go/aws", + "github.com/aws/aws-sdk-go/aws/credentials", "github.com/aws/aws-sdk-go/aws/session", "github.com/aws/aws-sdk-go/service/sqs", + "github.com/go-redis/redis", "github.com/golang/glog", "github.com/kelseyhightower/envconfig", "github.com/kubernetes-incubator/custom-metrics-apiserver/pkg/cmd", diff --git a/README.md b/README.md index 4fcaecd1317..af89bd24fc0 100644 --- a/README.md +++ b/README.md @@ -46,6 +46,11 @@ helm repo update helm install kedacore/keda-edge --devel --set logLevel=debug --namespace keda --name keda ``` +#### Install keda-edge chart with ARM image +```cli +helm install kedacore/keda-edge --devel --set logLevel=debug --namespace keda --name keda --set image.tag=arm +``` + ### Deploying with the [Azure Functions Core Tools](https://github.com/Azure/azure-functions-core-tools) ``` func kubernetes install --namespace keda diff --git a/chart/keda/README.md b/chart/keda/README.md index e3db64c49de..85fdd0bea13 100644 --- a/chart/keda/README.md +++ b/chart/keda/README.md @@ -45,6 +45,21 @@ $ helm install kedacore/keda-edge --devel --set logLevel=debug --namespace keda func kubernetes install --namespace keda ``` +## Configuration + +| Parameter | Description | Default | +|:----------------------------------|:------------------------------------|:---------------------| +| `image.repository` | Repository which provides the image | `kedacore/keda` | +| `image.tag` | Tag of image to use | `lastest` | +| `image.pullPolicy` | Policy to pull image | `Always` | +| `replicaCount` | Amount of replicas to run | `1` | +| `customResourceDefinition.create` | Indication to whether or not to create the custom resource definition | `true` | +| `rbac.create` | Indication to whether or not to use role-based access control | `true` | +| `serviceAccount.create` | Indication to whether or not to a serivce account should be used | `true` | +| `serviceAccount.name` | Name of the service account to use | `` | +| `logLevel` | Granularity of KEDA logs to use which includes scale controller & metric adapter | `info` | +| `glogLevel` | Granularity of logs to use for metric adapter which is beyond KEDA scope | `2` | + ## Uninstalling the Chart To uninstall/delete the `keda` deployment: diff --git a/examples/redis_scaledobject.yaml b/examples/redis_scaledobject.yaml new file mode 100644 index 00000000000..a325e9db86e --- /dev/null +++ b/examples/redis_scaledobject.yaml @@ -0,0 +1,17 @@ +apiVersion: keda.k8s.io/v1alpha1 +kind: ScaledObject +metadata: + name: redis-scaledobject + namespace: keda-redis-test + labels: + deploymentName: keda-redis-node +spec: + scaleTargetRef: + deploymentName: keda-redis-node + triggers: + - type: redis + metadata: + address: REDIS_HOST # Required host:port format + password: REDIS_PASSWORD + listName: mylist # Required + listLength: "5" # Required diff --git a/pkg/client/clientset/versioned/typed/keda/v1alpha1/fake/fake_scaledobject.go b/pkg/client/clientset/versioned/typed/keda/v1alpha1/fake/fake_scaledobject.go index 621859b73eb..da9d2932b31 100644 --- a/pkg/client/clientset/versioned/typed/keda/v1alpha1/fake/fake_scaledobject.go +++ b/pkg/client/clientset/versioned/typed/keda/v1alpha1/fake/fake_scaledobject.go @@ -139,7 +139,7 @@ func (c *FakeScaledObjects) DeleteCollection(options *v1.DeleteOptions, listOpti // Patch applies the patch and returns the patched scaledObject. func (c *FakeScaledObjects) Patch(name string, pt types.PatchType, data []byte, subresources ...string) (result *v1alpha1.ScaledObject, err error) { obj, err := c.Fake. - Invokes(testing.NewPatchSubresourceAction(scaledobjectsResource, c.ns, name, pt, data, subresources...), &v1alpha1.ScaledObject{}) + Invokes(testing.NewPatchSubresourceAction(scaledobjectsResource, c.ns, name, data, subresources...), &v1alpha1.ScaledObject{}) if obj == nil { return nil, err diff --git a/pkg/handler/scale_handler.go b/pkg/handler/scale_handler.go index ae90af5c2a5..9d60eb9798b 100644 --- a/pkg/handler/scale_handler.go +++ b/pkg/handler/scale_handler.go @@ -28,6 +28,8 @@ type ScaleHandler struct { kubeClient kubernetes.Interface externalMetricNames map[string]int metricNamesLock sync.RWMutex + hpasToCreate map[string]bool + hpaCreateLock sync.RWMutex } const ( @@ -45,6 +47,7 @@ func NewScaleHandler(kedaClient clientset.Interface, kubeClient kubernetes.Inter kedaClient: kedaClient, kubeClient: kubeClient, externalMetricNames: make(map[string]int), + hpasToCreate: make(map[string]bool), } return handler @@ -53,7 +56,7 @@ func NewScaleHandler(kedaClient clientset.Interface, kubeClient kubernetes.Inter // TODO confusing naming switching from isUpdate (controller) -> isDue (here)[] // WatchScaledObjectWithContext runs a handleScaleLoop go-routine for the scaledObject func (h *ScaleHandler) WatchScaledObjectWithContext(ctx context.Context, scaledObject *keda_v1alpha1.ScaledObject, isDue bool) { - h.createOrUpdateHPAForScaledObject(ctx, scaledObject) + h.createHPAWithRetry(scaledObject, true) go h.handleScaleLoop(ctx, scaledObject, isDue) } @@ -77,7 +80,6 @@ func (h *ScaleHandler) GetExternalMetricNames() []string { // GetScaledObjectMetrics is used by the metric adapter in provider.go to get the value for a metric for a scaled object func (h *ScaleHandler) GetScaledObjectMetrics(namespace string, metricSelector labels.Selector, metricName string) ([]external_metrics.ExternalMetricValue, error) { // get the scaled objects matching namespace and labels - log.Debugf("Getting metrics for namespace %s MetricName %s Metric Selector %s", namespace, metricName, metricSelector.String()) scaledObjectQuerier := h.kedaClient.KedaV1alpha1().ScaledObjects(namespace) scaledObjects, err := scaledObjectQuerier.List(meta_v1.ListOptions{LabelSelector: metricSelector.String()}) if err != nil { @@ -88,7 +90,11 @@ func (h *ScaleHandler) GetScaledObjectMetrics(namespace string, metricSelector l scaledObject := &scaledObjects.Items[0] matchingMetrics := []external_metrics.ExternalMetricValue{} - scalers, _ := h.getScalers(scaledObject) + scalers, _, err := h.getScalers(scaledObject) + if err != nil { + return nil, fmt.Errorf("Error when getting scalers %s", err) + } + for _, scaler := range scalers { metrics, err := scaler.GetMetrics(context.TODO(), metricName, metricSelector) if err != nil { @@ -103,6 +109,41 @@ func (h *ScaleHandler) GetScaledObjectMetrics(namespace string, metricSelector l return matchingMetrics, nil } +func (h *ScaleHandler) createHPAWithRetry(scaledObject *keda_v1alpha1.ScaledObject, createUpdateOverride bool) { + deploymentName := scaledObject.Spec.ScaleTargetRef.DeploymentName + if deploymentName == "" { + log.Errorf("Notified about ScaledObject with missing deployment name: %s", scaledObject.GetName()) + return + } + hpaName := fmt.Sprintf("keda-hpa-%s", deploymentName) + existsInRetryList := h.doesHPAExistInRetryList(hpaName) + if existsInRetryList || createUpdateOverride { + err := h.createOrUpdateHPAForScaledObject(scaledObject) + if err != nil { + log.Errorf("Error creating or updating HPA for scaled object %s: %s", scaledObject.GetName(), err) + } + + h.hpaCreateLock.Lock() + defer h.hpaCreateLock.Unlock() + if err != nil { + h.hpasToCreate[hpaName] = true + if !existsInRetryList { + log.Debugf("createHPAWithRetry ScaledObject %s is added to retry list", scaledObject.GetName()) + } + } else if existsInRetryList { + delete(h.hpasToCreate, hpaName) + log.Debugf("createHPAWithRetry ScaledObject %s is removed from retry list", scaledObject.GetName()) + } + } +} + +func (h *ScaleHandler) doesHPAExistInRetryList(hpaName string) bool { + h.hpaCreateLock.RLock() + defer h.hpaCreateLock.RUnlock() + _, found := h.hpasToCreate[hpaName] + return found +} + func (h *ScaleHandler) deleteHPAForScaledObject(scaledObject *keda_v1alpha1.ScaledObject) { deploymentName := scaledObject.Spec.ScaleTargetRef.DeploymentName if deploymentName == "" { @@ -111,7 +152,11 @@ func (h *ScaleHandler) deleteHPAForScaledObject(scaledObject *keda_v1alpha1.Scal } scaledObjectNamespace := scaledObject.GetNamespace() - scalers, _ := h.getScalers(scaledObject) + scalers, _, err := h.getScalers(scaledObject) + if err != nil { + log.Errorf("Error when getting scalers %s", err) + } + for _, scaler := range scalers { metricSpecs := scaler.GetMetricSpecForScaling() for _, metricSpec := range metricSpecs { @@ -122,7 +167,7 @@ func (h *ScaleHandler) deleteHPAForScaledObject(scaledObject *keda_v1alpha1.Scal hpaName := fmt.Sprintf("keda-hpa-%s", deploymentName) deleteOptions := &meta_v1.DeleteOptions{} - err := h.kubeClient.AutoscalingV2beta1().HorizontalPodAutoscalers(scaledObjectNamespace).Delete(hpaName, deleteOptions) + err = h.kubeClient.AutoscalingV2beta1().HorizontalPodAutoscalers(scaledObjectNamespace).Delete(hpaName, deleteOptions) if apierrors.IsNotFound(err) { log.Warnf("HPA with namespace %s and name %s is not found", scaledObjectNamespace, hpaName) } else if err != nil { @@ -130,6 +175,10 @@ func (h *ScaleHandler) deleteHPAForScaledObject(scaledObject *keda_v1alpha1.Scal } else { log.Infof("Deleted HPA with namespace %s and name %s", scaledObjectNamespace, hpaName) } + + h.hpaCreateLock.Lock() + defer h.hpaCreateLock.Unlock() + delete(h.hpasToCreate, hpaName) } func (h *ScaleHandler) addExternalMetricName(metricName string) { @@ -150,15 +199,17 @@ func (h *ScaleHandler) removeExternalMetricName(metricName string) { } } -func (h *ScaleHandler) createOrUpdateHPAForScaledObject(ctx context.Context, scaledObject *keda_v1alpha1.ScaledObject) { +func (h *ScaleHandler) createOrUpdateHPAForScaledObject(scaledObject *keda_v1alpha1.ScaledObject) error { deploymentName := scaledObject.Spec.ScaleTargetRef.DeploymentName if deploymentName == "" { - log.Errorf("Notified about ScaledObject with missing deployment name: %s", scaledObject.GetName()) - return + return fmt.Errorf("Notified about ScaledObject with missing deployment name: %s", scaledObject.GetName()) } var scaledObjectMetricSpecs []v2beta1.MetricSpec - scalers, _ := h.getScalers(scaledObject) + scalers, _, err := h.getScalers(scaledObject) + if err != nil { + return fmt.Errorf("Error getting scalers %s", err) + } for _, scaler := range scalers { metricSpecs := scaler.GetMetricSpecForScaling() @@ -208,29 +259,29 @@ func (h *ScaleHandler) createOrUpdateHPAForScaledObject(ctx context.Context, sca }, } - _, err := h.kubeClient.AutoscalingV2beta1().HorizontalPodAutoscalers(scaledObjectNamespace).Create(hpa) + _, err = h.kubeClient.AutoscalingV2beta1().HorizontalPodAutoscalers(scaledObjectNamespace).Create(hpa) if apierrors.IsAlreadyExists(err) { log.Infof("HPA with namespace %s and name %s already exists.Updating..", scaledObjectNamespace, hpaName) _, err := h.kubeClient.AutoscalingV2beta1().HorizontalPodAutoscalers(scaledObjectNamespace).Update(hpa) if err != nil { - log.Errorf("Error updating HPA with namespace %s and name %s : %s\n", scaledObjectNamespace, hpaName, err) + return fmt.Errorf("error updating HPA with namespace %s and name %s : %s", scaledObjectNamespace, hpaName, err) } else { log.Infof("Updated HPA with namespace %s and name %s", scaledObjectNamespace, hpaName) } } else if err != nil { - log.Errorf("Error creating HPA with namespace %s and name %s : %s\n", scaledObjectNamespace, hpaName, err) + return fmt.Errorf("error creating HPA with namespace %s and name %s : %s", scaledObjectNamespace, hpaName, err) } else { log.Infof("Created HPA with namespace %s and name %s", scaledObjectNamespace, hpaName) } + + return nil } // This method blocks forever and checks the scaledObject based on its pollingInterval // if isDue is set to true, the method will check the scaledObject right away. Otherwise // it'll wait for pollingInterval then check. func (h *ScaleHandler) handleScaleLoop(ctx context.Context, scaledObject *keda_v1alpha1.ScaledObject, isDue bool) { - h.handleScale(ctx, scaledObject) - var pollingInterval time.Duration if scaledObject.Spec.PollingInterval != nil { pollingInterval = time.Second * time.Duration(*scaledObject.Spec.PollingInterval) @@ -251,6 +302,7 @@ func (h *ScaleHandler) handleScaleLoop(ctx context.Context, scaledObject *keda_v for { select { case <-time.After(getPollingInterval()): + h.createHPAWithRetry(scaledObject, false) h.handleScale(ctx, scaledObject) case <-ctx.Done(): log.Debugf("context for scaledObject (%s/%s) canceled", scaledObject.GetNamespace(), scaledObject.GetName()) @@ -262,10 +314,14 @@ func (h *ScaleHandler) handleScaleLoop(ctx context.Context, scaledObject *keda_v // handleScale contains the main logic for the ScaleHandler scaling logic. // It'll check each trigger active status then call scaleDeployment func (h *ScaleHandler) handleScale(ctx context.Context, scaledObject *keda_v1alpha1.ScaledObject) { - scalers, deployment := h.getScalers(scaledObject) + scalers, deployment, err := h.getScalers(scaledObject) if deployment == nil { return } + if err != nil { + log.Errorf("Error getting scalers: %s", err) + return + } isScaledObjectActive := false @@ -420,7 +476,7 @@ func (h *ScaleHandler) resolveEnv(deployment *apps_v1.Deployment, containerName resolved[k] = v } } else { - log.Errorf("Error reading config ref %s on deployment %s/%s: %s", source.ConfigMapRef, deployment.GetNamespace(), deployment.GetName(), err) + return nil, fmt.Errorf("error reading config ref %s on deployment %s/%s: %s", source.ConfigMapRef, deployment.GetNamespace(), deployment.GetName(), err) } } else if source.SecretRef != nil { if secretsMap, err := h.resolveSecretMap(source.SecretRef, deployment.GetNamespace()); err == nil { @@ -428,7 +484,7 @@ func (h *ScaleHandler) resolveEnv(deployment *apps_v1.Deployment, containerName resolved[k] = v } } else { - log.Errorf("Error reading secret ref %s on deployment %s/%s: %s", source.SecretRef, deployment.GetNamespace(), deployment.GetName(), err) + return nil, fmt.Errorf("error reading secret ref %s on deployment %s/%s: %s", source.SecretRef, deployment.GetNamespace(), deployment.GetName(), err) } } } @@ -447,25 +503,24 @@ func (h *ScaleHandler) resolveEnv(deployment *apps_v1.Deployment, containerName // env is a secret selector value, err = h.resolveSecretValue(envVar.ValueFrom.SecretKeyRef, envVar.ValueFrom.SecretKeyRef.Key, deployment.GetNamespace()) if err != nil { - log.Errorf("Error resolving secret name %s for env %s in deployment %s/%s. Skipping", + return nil, fmt.Errorf("error resolving secret name %s for env %s in deployment %s/%s", envVar.ValueFrom.SecretKeyRef, envVar.Name, deployment.GetNamespace(), deployment.GetName()) - continue } } else if envVar.ValueFrom.ConfigMapKeyRef != nil { // env is a configMap selector value, err = h.resolveConfigValue(envVar.ValueFrom.ConfigMapKeyRef, envVar.ValueFrom.ConfigMapKeyRef.Key, deployment.GetNamespace()) if err != nil { - log.Errorf("Error resolving config %s for env %s in deployment %s/%s. Skippking", + return nil, fmt.Errorf("error resolving config %s for env %s in deployment %s/%s", envVar.ValueFrom.ConfigMapKeyRef, envVar.Name, deployment.GetName(), deployment.GetNamespace()) } } else { - log.Errorf("Cannot resolve env %s to a value. fieldRef and resourceFieldRef env are skipped. Skipping", envVar.Name) + return nil, fmt.Errorf("cannot resolve env %s to a value. fieldRef and resourceFieldRef env are skipped", envVar.Name) } } resolved[envVar.Name] = value @@ -518,37 +573,33 @@ func (h *ScaleHandler) resolveConfigValue(configKeyRef *core_v1.ConfigMapKeySele return string(configCollection.Data[keyName]), nil } -func (h *ScaleHandler) getScalers(scaledObject *keda_v1alpha1.ScaledObject) ([]scalers.Scaler, *apps_v1.Deployment) { +func (h *ScaleHandler) getScalers(scaledObject *keda_v1alpha1.ScaledObject) ([]scalers.Scaler, *apps_v1.Deployment, error) { scalers := []scalers.Scaler{} deploymentName := scaledObject.Spec.ScaleTargetRef.DeploymentName if deploymentName == "" { - log.Errorf("Notified about ScaledObject with missing deployment name: %s", scaledObject.GetName()) - return scalers, nil + return scalers, nil, fmt.Errorf("notified about ScaledObject with missing deployment name: %s", scaledObject.GetName()) } deployment, err := h.kubeClient.AppsV1().Deployments(scaledObject.GetNamespace()).Get(deploymentName, meta_v1.GetOptions{}) if err != nil { - log.Errorf("Error getting deployment: %s", err) - return scalers, nil + return scalers, nil, fmt.Errorf("error getting deployment: %s", err) } resolvedEnv, err := h.resolveEnv(deployment, scaledObject.Spec.ScaleTargetRef.ContainerName) if err != nil { - log.Errorf("Error resolving secrets for deployment: %s", err) - return scalers, nil + return scalers, nil, fmt.Errorf("error resolving secrets for deployment: %s", err) } for i, trigger := range scaledObject.Spec.Triggers { scaler, err := h.getScaler(trigger, resolvedEnv) if err != nil { - log.Debugf("error for trigger #%d: %s", i, err) - continue + return scalers, nil, fmt.Errorf("error getting scaler for trigger #%d: %s", i, err) } scalers = append(scalers, scaler) } - return scalers, deployment + return scalers, deployment, nil } func (h *ScaleHandler) getScaler(trigger keda_v1alpha1.ScaleTriggers, resolvedEnv map[string]string) (scalers.Scaler, error) { @@ -565,6 +616,8 @@ func (h *ScaleHandler) getScaler(trigger keda_v1alpha1.ScaleTriggers, resolvedEn return scalers.NewRabbitMQScaler(resolvedEnv, trigger.Metadata) case "prometheus": return scalers.NewPrometheusScaler(resolvedEnv, trigger.Metadata) + case "redis": + return scalers.NewRedisScaler(resolvedEnv, trigger.Metadata) default: return nil, fmt.Errorf("no scaler found for type: %s", trigger.Type) } diff --git a/pkg/provider/provider.go b/pkg/provider/provider.go index eaa3662a577..19b2df4b2fe 100644 --- a/pkg/provider/provider.go +++ b/pkg/provider/provider.go @@ -50,6 +50,7 @@ func (p *KedaProvider) GetExternalMetric(namespace string, metricSelector labels log.Debugf("Received request for namespace: %s, metric name: %s, metric selectors: %s", namespace, info.Metric, metricSelector.String()) externalmetrics, err := p.scaleHandler.GetScaledObjectMetrics(namespace, metricSelector, info.Metric) if err != nil { + log.Errorf("Cannot get metrics for Namespace %s MetricSelector %s and Metrics %s. Error: %s", namespace, metricSelector, info.Metric, err) return nil, err } diff --git a/pkg/scalers/rabbitmq_scaler_test.go b/pkg/scalers/rabbitmq_scaler_test.go new file mode 100644 index 00000000000..4a70ab133f1 --- /dev/null +++ b/pkg/scalers/rabbitmq_scaler_test.go @@ -0,0 +1,35 @@ +package scalers + +import ( + "testing" +) + +type parseRabbitMQMetadataTestData struct { + metadata map[string]string + isError bool +} + +var testRabbitMQMetadata = []parseRabbitMQMetadataTestData{ + // nothing passed + {map[string]string{}, true}, + // properly formed metadata + {map[string]string{"queueLength": "10", "queueName": "sample", "host": "amqp://rabbitmq"}, false}, + // malformed queueLength + {map[string]string{"queueLength": "AA", "queueName": "sample", "host": "amqp://rabbitmq"}, true}, + // missing host + {map[string]string{"queueLength": "AA", "queueName": "sample"}, true}, + // missing queueName + {map[string]string{"queueLength": "10", "host": "amqp://rabbitmq"}, true}, +} + +func TestRabbitMQParseMetadata(t *testing.T) { + for _, testData := range testRabbitMQMetadata { + _, err := parseRabbitMQMetadata(testData.metadata) + if err != nil && !testData.isError { + t.Error("Expected success but got error", err) + } + if testData.isError && err == nil { + t.Error("Expected error but got success") + } + } +} diff --git a/pkg/scalers/redis_scaler.go b/pkg/scalers/redis_scaler.go new file mode 100644 index 00000000000..5c9d0425b3b --- /dev/null +++ b/pkg/scalers/redis_scaler.go @@ -0,0 +1,144 @@ +package scalers + +import ( + "context" + "fmt" + "strconv" + + log "github.com/Sirupsen/logrus" + "github.com/go-redis/redis" + v2beta1 "k8s.io/api/autoscaling/v2beta1" + "k8s.io/apimachinery/pkg/api/resource" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/labels" + "k8s.io/metrics/pkg/apis/external_metrics" +) + +const ( + listLengthMetricName = "RedisListLength" + defaultTargetListLength = 5 + defaultRedisAddress = "redis-master.default.svc.cluster.local:6379" + defaultRedisPassword = "" +) + +type redisScaler struct { + metadata *redisMetadata +} + +type redisMetadata struct { + targetListLength int + listName string + address string + password string +} + +// NewRedisScaler creates a new redisScaler +func NewRedisScaler(resolvedEnv, metadata map[string]string) (Scaler, error) { + meta, err := parseRedisMetadata(metadata, resolvedEnv) + if err != nil { + return nil, fmt.Errorf("error parsing redis metadata: %s", err) + } + + return &redisScaler{ + metadata: meta, + }, nil +} + +func parseRedisMetadata(metadata, resolvedEnv map[string]string) (*redisMetadata, error) { + meta := redisMetadata{} + meta.targetListLength = defaultTargetListLength + + if val, ok := metadata["listLength"]; ok { + listLength, err := strconv.Atoi(val) + if err != nil { + return nil, fmt.Errorf("List length parsing error %s", err.Error()) + } else { + meta.targetListLength = listLength + } + } + + if val, ok := metadata["listName"]; ok { + meta.listName = val + } else { + return nil, fmt.Errorf("no list name given") + } + + address := defaultRedisAddress + if val, ok := metadata["address"]; ok && val != "" { + address = val + } + + if val, ok := resolvedEnv[address]; ok { + meta.address = val + } else { + return nil, fmt.Errorf("no address given. Address should be in the format of host:port") + } + + meta.password = defaultRedisPassword + if val, ok := metadata["password"]; ok && val != "" { + if passd, ok := resolvedEnv[val]; ok { + meta.password = passd + } + } + + return &meta, nil +} + +// IsActive checks if there is any element in the Redis list +func (s *redisScaler) IsActive(ctx context.Context) (bool, error) { + length, err := getRedisListLength( + ctx, s.metadata.address, s.metadata.password, s.metadata.listName) + + if err != nil { + log.Errorf("error %s", err) + return false, err + } + + return length > 0, nil +} + +func (s *redisScaler) Close() error { + return nil +} + +// GetMetricSpecForScaling returns the metric spec for the HPA +func (s *redisScaler) GetMetricSpecForScaling() []v2beta1.MetricSpec { + targetListLengthQty := resource.NewQuantity(int64(s.metadata.targetListLength), resource.DecimalSI) + externalMetric := &v2beta1.ExternalMetricSource{MetricName: listLengthMetricName, TargetAverageValue: targetListLengthQty} + metricSpec := v2beta1.MetricSpec{External: externalMetric, Type: externalMetricType} + return []v2beta1.MetricSpec{metricSpec} +} + +// GetMetrics connects to Redis and finds the length of the list +func (s *redisScaler) GetMetrics(ctx context.Context, metricName string, metricSelector labels.Selector) ([]external_metrics.ExternalMetricValue, error) { + listLen, err := getRedisListLength(ctx, s.metadata.address, s.metadata.password, s.metadata.listName) + + if err != nil { + log.Errorf("error getting list length %s", err) + return []external_metrics.ExternalMetricValue{}, err + } + + metric := external_metrics.ExternalMetricValue{ + MetricName: metricName, + Value: *resource.NewQuantity(listLen, resource.DecimalSI), + Timestamp: metav1.Now(), + } + + return append([]external_metrics.ExternalMetricValue{}, metric), nil +} + +func getRedisListLength(ctx context.Context, address string, password string, listName string) (int64, error) { + client := redis.NewClient(&redis.Options{ + Addr: address, + Password: password, + DB: 0, + }) + + cmd := client.LLen(listName) + + if cmd.Err() != nil { + return -1, cmd.Err() + } + + return cmd.Result() +} diff --git a/pkg/scalers/redis_scaler_test.go b/pkg/scalers/redis_scaler_test.go new file mode 100644 index 00000000000..cce7f844f74 --- /dev/null +++ b/pkg/scalers/redis_scaler_test.go @@ -0,0 +1,40 @@ +package scalers + +import ( + "testing" +) + +var testRedisResolvedEnv = map[string]string{ + "REDIS_HOST": "none", + "REDIS_PASSWORD": "none", +} + +type parseRedisMetadataTestData struct { + metadata map[string]string + isError bool +} + +var testRedisMetadata = []parseRedisMetadataTestData{ + // nothing passed + {map[string]string{}, true}, + // properly formed listName + {map[string]string{"listName": "mylist", "listLength": "10", "address": "REDIS_HOST", "password": "REDIS_PASSWORD"}, false}, + // properly formed listName, empty address + {map[string]string{"listName": "mylist", "listLength": "10", "address": "", "password": ""}, true}, + // improperly formed listLength + {map[string]string{"listName": "mylist", "listLength": "AA", "address": "REDIS_HOST", "password": ""}, true}, + // address does not resolve + {map[string]string{"listName": "mylist", "listLength": "0", "address": "REDIS_WRONG", "password": ""}, true}, +} + +func TestRedisParseMetadata(t *testing.T) { + for _, testData := range testRedisMetadata { + _, err := parseRedisMetadata(testData.metadata, testRedisResolvedEnv) + if err != nil && !testData.isError { + t.Error("Expected success but got error", err) + } + if testData.isError && err == nil { + t.Error("Expected error but got success") + } + } +} diff --git a/vendor/github.com/go-redis/redis/LICENSE b/vendor/github.com/go-redis/redis/LICENSE new file mode 100644 index 00000000000..298bed9beaf --- /dev/null +++ b/vendor/github.com/go-redis/redis/LICENSE @@ -0,0 +1,25 @@ +Copyright (c) 2013 The github.com/go-redis/redis Authors. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/go-redis/redis/cluster.go b/vendor/github.com/go-redis/redis/cluster.go new file mode 100644 index 00000000000..ab2c76f05e9 --- /dev/null +++ b/vendor/github.com/go-redis/redis/cluster.go @@ -0,0 +1,1627 @@ +package redis + +import ( + "context" + "crypto/tls" + "fmt" + "math" + "math/rand" + "net" + "runtime" + "sort" + "sync" + "sync/atomic" + "time" + + "github.com/go-redis/redis/internal" + "github.com/go-redis/redis/internal/hashtag" + "github.com/go-redis/redis/internal/pool" + "github.com/go-redis/redis/internal/proto" +) + +var errClusterNoNodes = fmt.Errorf("redis: cluster has no nodes") + +// ClusterOptions are used to configure a cluster client and should be +// passed to NewClusterClient. +type ClusterOptions struct { + // A seed list of host:port addresses of cluster nodes. + Addrs []string + + // The maximum number of retries before giving up. Command is retried + // on network errors and MOVED/ASK redirects. + // Default is 8 retries. + MaxRedirects int + + // Enables read-only commands on slave nodes. + ReadOnly bool + // Allows routing read-only commands to the closest master or slave node. + // It automatically enables ReadOnly. + RouteByLatency bool + // Allows routing read-only commands to the random master or slave node. + // It automatically enables ReadOnly. + RouteRandomly bool + + // Optional function that returns cluster slots information. + // It is useful to manually create cluster of standalone Redis servers + // and load-balance read/write operations between master and slaves. + // It can use service like ZooKeeper to maintain configuration information + // and Cluster.ReloadState to manually trigger state reloading. + ClusterSlots func() ([]ClusterSlot, error) + + // Optional hook that is called when a new node is created. + OnNewNode func(*Client) + + // Following options are copied from Options struct. + + OnConnect func(*Conn) error + + Password string + + MaxRetries int + MinRetryBackoff time.Duration + MaxRetryBackoff time.Duration + + DialTimeout time.Duration + ReadTimeout time.Duration + WriteTimeout time.Duration + + // PoolSize applies per cluster node and not for the whole cluster. + PoolSize int + MinIdleConns int + MaxConnAge time.Duration + PoolTimeout time.Duration + IdleTimeout time.Duration + IdleCheckFrequency time.Duration + + TLSConfig *tls.Config +} + +func (opt *ClusterOptions) init() { + if opt.MaxRedirects == -1 { + opt.MaxRedirects = 0 + } else if opt.MaxRedirects == 0 { + opt.MaxRedirects = 8 + } + + if (opt.RouteByLatency || opt.RouteRandomly) && opt.ClusterSlots == nil { + opt.ReadOnly = true + } + + if opt.PoolSize == 0 { + opt.PoolSize = 5 * runtime.NumCPU() + } + + switch opt.ReadTimeout { + case -1: + opt.ReadTimeout = 0 + case 0: + opt.ReadTimeout = 3 * time.Second + } + switch opt.WriteTimeout { + case -1: + opt.WriteTimeout = 0 + case 0: + opt.WriteTimeout = opt.ReadTimeout + } + + switch opt.MinRetryBackoff { + case -1: + opt.MinRetryBackoff = 0 + case 0: + opt.MinRetryBackoff = 8 * time.Millisecond + } + switch opt.MaxRetryBackoff { + case -1: + opt.MaxRetryBackoff = 0 + case 0: + opt.MaxRetryBackoff = 512 * time.Millisecond + } +} + +func (opt *ClusterOptions) clientOptions() *Options { + const disableIdleCheck = -1 + + return &Options{ + OnConnect: opt.OnConnect, + + MaxRetries: opt.MaxRetries, + MinRetryBackoff: opt.MinRetryBackoff, + MaxRetryBackoff: opt.MaxRetryBackoff, + Password: opt.Password, + readOnly: opt.ReadOnly, + + DialTimeout: opt.DialTimeout, + ReadTimeout: opt.ReadTimeout, + WriteTimeout: opt.WriteTimeout, + + PoolSize: opt.PoolSize, + MinIdleConns: opt.MinIdleConns, + MaxConnAge: opt.MaxConnAge, + PoolTimeout: opt.PoolTimeout, + IdleTimeout: opt.IdleTimeout, + IdleCheckFrequency: disableIdleCheck, + + TLSConfig: opt.TLSConfig, + } +} + +//------------------------------------------------------------------------------ + +type clusterNode struct { + Client *Client + + latency uint32 // atomic + generation uint32 // atomic + loading uint32 // atomic +} + +func newClusterNode(clOpt *ClusterOptions, addr string) *clusterNode { + opt := clOpt.clientOptions() + opt.Addr = addr + node := clusterNode{ + Client: NewClient(opt), + } + + node.latency = math.MaxUint32 + if clOpt.RouteByLatency { + go node.updateLatency() + } + + if clOpt.OnNewNode != nil { + clOpt.OnNewNode(node.Client) + } + + return &node +} + +func (n *clusterNode) String() string { + return n.Client.String() +} + +func (n *clusterNode) Close() error { + return n.Client.Close() +} + +func (n *clusterNode) updateLatency() { + const probes = 10 + + var latency uint32 + for i := 0; i < probes; i++ { + start := time.Now() + n.Client.Ping() + probe := uint32(time.Since(start) / time.Microsecond) + latency = (latency + probe) / 2 + } + atomic.StoreUint32(&n.latency, latency) +} + +func (n *clusterNode) Latency() time.Duration { + latency := atomic.LoadUint32(&n.latency) + return time.Duration(latency) * time.Microsecond +} + +func (n *clusterNode) MarkAsLoading() { + atomic.StoreUint32(&n.loading, uint32(time.Now().Unix())) +} + +func (n *clusterNode) Loading() bool { + const minute = int64(time.Minute / time.Second) + + loading := atomic.LoadUint32(&n.loading) + if loading == 0 { + return false + } + if time.Now().Unix()-int64(loading) < minute { + return true + } + atomic.StoreUint32(&n.loading, 0) + return false +} + +func (n *clusterNode) Generation() uint32 { + return atomic.LoadUint32(&n.generation) +} + +func (n *clusterNode) SetGeneration(gen uint32) { + for { + v := atomic.LoadUint32(&n.generation) + if gen < v || atomic.CompareAndSwapUint32(&n.generation, v, gen) { + break + } + } +} + +//------------------------------------------------------------------------------ + +type clusterNodes struct { + opt *ClusterOptions + + mu sync.RWMutex + allAddrs []string + allNodes map[string]*clusterNode + clusterAddrs []string + closed bool + + _generation uint32 // atomic +} + +func newClusterNodes(opt *ClusterOptions) *clusterNodes { + return &clusterNodes{ + opt: opt, + + allAddrs: opt.Addrs, + allNodes: make(map[string]*clusterNode), + } +} + +func (c *clusterNodes) Close() error { + c.mu.Lock() + defer c.mu.Unlock() + + if c.closed { + return nil + } + c.closed = true + + var firstErr error + for _, node := range c.allNodes { + if err := node.Client.Close(); err != nil && firstErr == nil { + firstErr = err + } + } + + c.allNodes = nil + c.clusterAddrs = nil + + return firstErr +} + +func (c *clusterNodes) Addrs() ([]string, error) { + var addrs []string + c.mu.RLock() + closed := c.closed + if !closed { + if len(c.clusterAddrs) > 0 { + addrs = c.clusterAddrs + } else { + addrs = c.allAddrs + } + } + c.mu.RUnlock() + + if closed { + return nil, pool.ErrClosed + } + if len(addrs) == 0 { + return nil, errClusterNoNodes + } + return addrs, nil +} + +func (c *clusterNodes) NextGeneration() uint32 { + return atomic.AddUint32(&c._generation, 1) +} + +// GC removes unused nodes. +func (c *clusterNodes) GC(generation uint32) { + var collected []*clusterNode + c.mu.Lock() + for addr, node := range c.allNodes { + if node.Generation() >= generation { + continue + } + + c.clusterAddrs = remove(c.clusterAddrs, addr) + delete(c.allNodes, addr) + collected = append(collected, node) + } + c.mu.Unlock() + + for _, node := range collected { + _ = node.Client.Close() + } +} + +func (c *clusterNodes) Get(addr string) (*clusterNode, error) { + var node *clusterNode + var err error + c.mu.RLock() + if c.closed { + err = pool.ErrClosed + } else { + node = c.allNodes[addr] + } + c.mu.RUnlock() + return node, err +} + +func (c *clusterNodes) GetOrCreate(addr string) (*clusterNode, error) { + node, err := c.Get(addr) + if err != nil { + return nil, err + } + if node != nil { + return node, nil + } + + c.mu.Lock() + defer c.mu.Unlock() + + if c.closed { + return nil, pool.ErrClosed + } + + node, ok := c.allNodes[addr] + if ok { + return node, err + } + + node = newClusterNode(c.opt, addr) + + c.allAddrs = appendIfNotExists(c.allAddrs, addr) + c.clusterAddrs = append(c.clusterAddrs, addr) + c.allNodes[addr] = node + + return node, err +} + +func (c *clusterNodes) All() ([]*clusterNode, error) { + c.mu.RLock() + defer c.mu.RUnlock() + + if c.closed { + return nil, pool.ErrClosed + } + + cp := make([]*clusterNode, 0, len(c.allNodes)) + for _, node := range c.allNodes { + cp = append(cp, node) + } + return cp, nil +} + +func (c *clusterNodes) Random() (*clusterNode, error) { + addrs, err := c.Addrs() + if err != nil { + return nil, err + } + + n := rand.Intn(len(addrs)) + return c.GetOrCreate(addrs[n]) +} + +//------------------------------------------------------------------------------ + +type clusterSlot struct { + start, end int + nodes []*clusterNode +} + +type clusterSlotSlice []*clusterSlot + +func (p clusterSlotSlice) Len() int { + return len(p) +} + +func (p clusterSlotSlice) Less(i, j int) bool { + return p[i].start < p[j].start +} + +func (p clusterSlotSlice) Swap(i, j int) { + p[i], p[j] = p[j], p[i] +} + +type clusterState struct { + nodes *clusterNodes + Masters []*clusterNode + Slaves []*clusterNode + + slots []*clusterSlot + + generation uint32 + createdAt time.Time +} + +func newClusterState( + nodes *clusterNodes, slots []ClusterSlot, origin string, +) (*clusterState, error) { + c := clusterState{ + nodes: nodes, + + slots: make([]*clusterSlot, 0, len(slots)), + + generation: nodes.NextGeneration(), + createdAt: time.Now(), + } + + originHost, _, _ := net.SplitHostPort(origin) + isLoopbackOrigin := isLoopback(originHost) + + for _, slot := range slots { + var nodes []*clusterNode + for i, slotNode := range slot.Nodes { + addr := slotNode.Addr + if !isLoopbackOrigin { + addr = replaceLoopbackHost(addr, originHost) + } + + node, err := c.nodes.GetOrCreate(addr) + if err != nil { + return nil, err + } + + node.SetGeneration(c.generation) + nodes = append(nodes, node) + + if i == 0 { + c.Masters = appendUniqueNode(c.Masters, node) + } else { + c.Slaves = appendUniqueNode(c.Slaves, node) + } + } + + c.slots = append(c.slots, &clusterSlot{ + start: slot.Start, + end: slot.End, + nodes: nodes, + }) + } + + sort.Sort(clusterSlotSlice(c.slots)) + + time.AfterFunc(time.Minute, func() { + nodes.GC(c.generation) + }) + + return &c, nil +} + +func replaceLoopbackHost(nodeAddr, originHost string) string { + nodeHost, nodePort, err := net.SplitHostPort(nodeAddr) + if err != nil { + return nodeAddr + } + + nodeIP := net.ParseIP(nodeHost) + if nodeIP == nil { + return nodeAddr + } + + if !nodeIP.IsLoopback() { + return nodeAddr + } + + // Use origin host which is not loopback and node port. + return net.JoinHostPort(originHost, nodePort) +} + +func isLoopback(host string) bool { + ip := net.ParseIP(host) + if ip == nil { + return true + } + return ip.IsLoopback() +} + +func (c *clusterState) slotMasterNode(slot int) (*clusterNode, error) { + nodes := c.slotNodes(slot) + if len(nodes) > 0 { + return nodes[0], nil + } + return c.nodes.Random() +} + +func (c *clusterState) slotSlaveNode(slot int) (*clusterNode, error) { + nodes := c.slotNodes(slot) + switch len(nodes) { + case 0: + return c.nodes.Random() + case 1: + return nodes[0], nil + case 2: + if slave := nodes[1]; !slave.Loading() { + return slave, nil + } + return nodes[0], nil + default: + var slave *clusterNode + for i := 0; i < 10; i++ { + n := rand.Intn(len(nodes)-1) + 1 + slave = nodes[n] + if !slave.Loading() { + return slave, nil + } + } + + // All slaves are loading - use master. + return nodes[0], nil + } +} + +func (c *clusterState) slotClosestNode(slot int) (*clusterNode, error) { + const threshold = time.Millisecond + + nodes := c.slotNodes(slot) + if len(nodes) == 0 { + return c.nodes.Random() + } + + var node *clusterNode + for _, n := range nodes { + if n.Loading() { + continue + } + if node == nil || node.Latency()-n.Latency() > threshold { + node = n + } + } + return node, nil +} + +func (c *clusterState) slotRandomNode(slot int) *clusterNode { + nodes := c.slotNodes(slot) + n := rand.Intn(len(nodes)) + return nodes[n] +} + +func (c *clusterState) slotNodes(slot int) []*clusterNode { + i := sort.Search(len(c.slots), func(i int) bool { + return c.slots[i].end >= slot + }) + if i >= len(c.slots) { + return nil + } + x := c.slots[i] + if slot >= x.start && slot <= x.end { + return x.nodes + } + return nil +} + +//------------------------------------------------------------------------------ + +type clusterStateHolder struct { + load func() (*clusterState, error) + + state atomic.Value + reloading uint32 // atomic +} + +func newClusterStateHolder(fn func() (*clusterState, error)) *clusterStateHolder { + return &clusterStateHolder{ + load: fn, + } +} + +func (c *clusterStateHolder) Reload() (*clusterState, error) { + state, err := c.load() + if err != nil { + return nil, err + } + c.state.Store(state) + return state, nil +} + +func (c *clusterStateHolder) LazyReload() { + if !atomic.CompareAndSwapUint32(&c.reloading, 0, 1) { + return + } + go func() { + defer atomic.StoreUint32(&c.reloading, 0) + + _, err := c.Reload() + if err != nil { + return + } + time.Sleep(100 * time.Millisecond) + }() +} + +func (c *clusterStateHolder) Get() (*clusterState, error) { + v := c.state.Load() + if v != nil { + state := v.(*clusterState) + if time.Since(state.createdAt) > time.Minute { + c.LazyReload() + } + return state, nil + } + return c.Reload() +} + +func (c *clusterStateHolder) ReloadOrGet() (*clusterState, error) { + state, err := c.Reload() + if err == nil { + return state, nil + } + return c.Get() +} + +//------------------------------------------------------------------------------ + +// ClusterClient is a Redis Cluster client representing a pool of zero +// or more underlying connections. It's safe for concurrent use by +// multiple goroutines. +type ClusterClient struct { + cmdable + + ctx context.Context + + opt *ClusterOptions + nodes *clusterNodes + state *clusterStateHolder + cmdsInfoCache *cmdsInfoCache + + process func(Cmder) error + processPipeline func([]Cmder) error + processTxPipeline func([]Cmder) error +} + +// NewClusterClient returns a Redis Cluster client as described in +// http://redis.io/topics/cluster-spec. +func NewClusterClient(opt *ClusterOptions) *ClusterClient { + opt.init() + + c := &ClusterClient{ + opt: opt, + nodes: newClusterNodes(opt), + } + c.state = newClusterStateHolder(c.loadState) + c.cmdsInfoCache = newCmdsInfoCache(c.cmdsInfo) + + c.process = c.defaultProcess + c.processPipeline = c.defaultProcessPipeline + c.processTxPipeline = c.defaultProcessTxPipeline + + c.init() + if opt.IdleCheckFrequency > 0 { + go c.reaper(opt.IdleCheckFrequency) + } + + return c +} + +func (c *ClusterClient) init() { + c.cmdable.setProcessor(c.Process) +} + +// ReloadState reloads cluster state. If available it calls ClusterSlots func +// to get cluster slots information. +func (c *ClusterClient) ReloadState() error { + _, err := c.state.Reload() + return err +} + +func (c *ClusterClient) Context() context.Context { + if c.ctx != nil { + return c.ctx + } + return context.Background() +} + +func (c *ClusterClient) WithContext(ctx context.Context) *ClusterClient { + if ctx == nil { + panic("nil context") + } + c2 := c.clone() + c2.ctx = ctx + return c2 +} + +func (c *ClusterClient) clone() *ClusterClient { + cp := *c + cp.init() + return &cp +} + +// Options returns read-only Options that were used to create the client. +func (c *ClusterClient) Options() *ClusterOptions { + return c.opt +} + +func (c *ClusterClient) retryBackoff(attempt int) time.Duration { + return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff) +} + +func (c *ClusterClient) cmdsInfo() (map[string]*CommandInfo, error) { + addrs, err := c.nodes.Addrs() + if err != nil { + return nil, err + } + + var firstErr error + for _, addr := range addrs { + node, err := c.nodes.Get(addr) + if err != nil { + return nil, err + } + if node == nil { + continue + } + + info, err := node.Client.Command().Result() + if err == nil { + return info, nil + } + if firstErr == nil { + firstErr = err + } + } + return nil, firstErr +} + +func (c *ClusterClient) cmdInfo(name string) *CommandInfo { + cmdsInfo, err := c.cmdsInfoCache.Get() + if err != nil { + return nil + } + + info := cmdsInfo[name] + if info == nil { + internal.Logf("info for cmd=%s not found", name) + } + return info +} + +func cmdSlot(cmd Cmder, pos int) int { + if pos == 0 { + return hashtag.RandomSlot() + } + firstKey := cmd.stringArg(pos) + return hashtag.Slot(firstKey) +} + +func (c *ClusterClient) cmdSlot(cmd Cmder) int { + args := cmd.Args() + if args[0] == "cluster" && args[1] == "getkeysinslot" { + return args[2].(int) + } + + cmdInfo := c.cmdInfo(cmd.Name()) + return cmdSlot(cmd, cmdFirstKeyPos(cmd, cmdInfo)) +} + +func (c *ClusterClient) cmdSlotAndNode(cmd Cmder) (int, *clusterNode, error) { + state, err := c.state.Get() + if err != nil { + return 0, nil, err + } + + cmdInfo := c.cmdInfo(cmd.Name()) + slot := c.cmdSlot(cmd) + + if c.opt.ReadOnly && cmdInfo != nil && cmdInfo.ReadOnly { + if c.opt.RouteByLatency { + node, err := state.slotClosestNode(slot) + return slot, node, err + } + + if c.opt.RouteRandomly { + node := state.slotRandomNode(slot) + return slot, node, nil + } + + node, err := state.slotSlaveNode(slot) + return slot, node, err + } + + node, err := state.slotMasterNode(slot) + return slot, node, err +} + +func (c *ClusterClient) slotMasterNode(slot int) (*clusterNode, error) { + state, err := c.state.Get() + if err != nil { + return nil, err + } + + nodes := state.slotNodes(slot) + if len(nodes) > 0 { + return nodes[0], nil + } + return c.nodes.Random() +} + +func (c *ClusterClient) Watch(fn func(*Tx) error, keys ...string) error { + if len(keys) == 0 { + return fmt.Errorf("redis: Watch requires at least one key") + } + + slot := hashtag.Slot(keys[0]) + for _, key := range keys[1:] { + if hashtag.Slot(key) != slot { + err := fmt.Errorf("redis: Watch requires all keys to be in the same slot") + return err + } + } + + node, err := c.slotMasterNode(slot) + if err != nil { + return err + } + + for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ { + if attempt > 0 { + time.Sleep(c.retryBackoff(attempt)) + } + + err = node.Client.Watch(fn, keys...) + if err == nil { + break + } + if err != Nil { + c.state.LazyReload() + } + + moved, ask, addr := internal.IsMovedError(err) + if moved || ask { + node, err = c.nodes.GetOrCreate(addr) + if err != nil { + return err + } + continue + } + + if err == pool.ErrClosed || internal.IsReadOnlyError(err) { + node, err = c.slotMasterNode(slot) + if err != nil { + return err + } + continue + } + + if internal.IsRetryableError(err, true) { + continue + } + + return err + } + + return err +} + +// Close closes the cluster client, releasing any open resources. +// +// It is rare to Close a ClusterClient, as the ClusterClient is meant +// to be long-lived and shared between many goroutines. +func (c *ClusterClient) Close() error { + return c.nodes.Close() +} + +// Do creates a Cmd from the args and processes the cmd. +func (c *ClusterClient) Do(args ...interface{}) *Cmd { + cmd := NewCmd(args...) + c.Process(cmd) + return cmd +} + +func (c *ClusterClient) WrapProcess( + fn func(oldProcess func(Cmder) error) func(Cmder) error, +) { + c.process = fn(c.process) +} + +func (c *ClusterClient) Process(cmd Cmder) error { + return c.process(cmd) +} + +func (c *ClusterClient) defaultProcess(cmd Cmder) error { + var node *clusterNode + var ask bool + for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ { + if attempt > 0 { + time.Sleep(c.retryBackoff(attempt)) + } + + if node == nil { + var err error + _, node, err = c.cmdSlotAndNode(cmd) + if err != nil { + cmd.setErr(err) + break + } + } + + var err error + if ask { + pipe := node.Client.Pipeline() + _ = pipe.Process(NewCmd("ASKING")) + _ = pipe.Process(cmd) + _, err = pipe.Exec() + _ = pipe.Close() + ask = false + } else { + err = node.Client.Process(cmd) + } + + // If there is no error - we are done. + if err == nil { + break + } + if err != Nil { + c.state.LazyReload() + } + + // If slave is loading - pick another node. + if c.opt.ReadOnly && internal.IsLoadingError(err) { + node.MarkAsLoading() + node = nil + continue + } + + var moved bool + var addr string + moved, ask, addr = internal.IsMovedError(err) + if moved || ask { + node, err = c.nodes.GetOrCreate(addr) + if err != nil { + break + } + continue + } + + if err == pool.ErrClosed || internal.IsReadOnlyError(err) { + node = nil + continue + } + + if internal.IsRetryableError(err, true) { + // First retry the same node. + if attempt == 0 { + continue + } + + // Second try random node. + node, err = c.nodes.Random() + if err != nil { + break + } + continue + } + + break + } + + return cmd.Err() +} + +// ForEachMaster concurrently calls the fn on each master node in the cluster. +// It returns the first error if any. +func (c *ClusterClient) ForEachMaster(fn func(client *Client) error) error { + state, err := c.state.ReloadOrGet() + if err != nil { + return err + } + + var wg sync.WaitGroup + errCh := make(chan error, 1) + for _, master := range state.Masters { + wg.Add(1) + go func(node *clusterNode) { + defer wg.Done() + err := fn(node.Client) + if err != nil { + select { + case errCh <- err: + default: + } + } + }(master) + } + wg.Wait() + + select { + case err := <-errCh: + return err + default: + return nil + } +} + +// ForEachSlave concurrently calls the fn on each slave node in the cluster. +// It returns the first error if any. +func (c *ClusterClient) ForEachSlave(fn func(client *Client) error) error { + state, err := c.state.ReloadOrGet() + if err != nil { + return err + } + + var wg sync.WaitGroup + errCh := make(chan error, 1) + for _, slave := range state.Slaves { + wg.Add(1) + go func(node *clusterNode) { + defer wg.Done() + err := fn(node.Client) + if err != nil { + select { + case errCh <- err: + default: + } + } + }(slave) + } + wg.Wait() + + select { + case err := <-errCh: + return err + default: + return nil + } +} + +// ForEachNode concurrently calls the fn on each known node in the cluster. +// It returns the first error if any. +func (c *ClusterClient) ForEachNode(fn func(client *Client) error) error { + state, err := c.state.ReloadOrGet() + if err != nil { + return err + } + + var wg sync.WaitGroup + errCh := make(chan error, 1) + worker := func(node *clusterNode) { + defer wg.Done() + err := fn(node.Client) + if err != nil { + select { + case errCh <- err: + default: + } + } + } + + for _, node := range state.Masters { + wg.Add(1) + go worker(node) + } + for _, node := range state.Slaves { + wg.Add(1) + go worker(node) + } + + wg.Wait() + select { + case err := <-errCh: + return err + default: + return nil + } +} + +// PoolStats returns accumulated connection pool stats. +func (c *ClusterClient) PoolStats() *PoolStats { + var acc PoolStats + + state, _ := c.state.Get() + if state == nil { + return &acc + } + + for _, node := range state.Masters { + s := node.Client.connPool.Stats() + acc.Hits += s.Hits + acc.Misses += s.Misses + acc.Timeouts += s.Timeouts + + acc.TotalConns += s.TotalConns + acc.IdleConns += s.IdleConns + acc.StaleConns += s.StaleConns + } + + for _, node := range state.Slaves { + s := node.Client.connPool.Stats() + acc.Hits += s.Hits + acc.Misses += s.Misses + acc.Timeouts += s.Timeouts + + acc.TotalConns += s.TotalConns + acc.IdleConns += s.IdleConns + acc.StaleConns += s.StaleConns + } + + return &acc +} + +func (c *ClusterClient) loadState() (*clusterState, error) { + if c.opt.ClusterSlots != nil { + slots, err := c.opt.ClusterSlots() + if err != nil { + return nil, err + } + return newClusterState(c.nodes, slots, "") + } + + addrs, err := c.nodes.Addrs() + if err != nil { + return nil, err + } + + var firstErr error + for _, addr := range addrs { + node, err := c.nodes.GetOrCreate(addr) + if err != nil { + if firstErr == nil { + firstErr = err + } + continue + } + + slots, err := node.Client.ClusterSlots().Result() + if err != nil { + if firstErr == nil { + firstErr = err + } + continue + } + + return newClusterState(c.nodes, slots, node.Client.opt.Addr) + } + + return nil, firstErr +} + +// reaper closes idle connections to the cluster. +func (c *ClusterClient) reaper(idleCheckFrequency time.Duration) { + ticker := time.NewTicker(idleCheckFrequency) + defer ticker.Stop() + + for range ticker.C { + nodes, err := c.nodes.All() + if err != nil { + break + } + + for _, node := range nodes { + _, err := node.Client.connPool.(*pool.ConnPool).ReapStaleConns() + if err != nil { + internal.Logf("ReapStaleConns failed: %s", err) + } + } + } +} + +func (c *ClusterClient) Pipeline() Pipeliner { + pipe := Pipeline{ + exec: c.processPipeline, + } + pipe.statefulCmdable.setProcessor(pipe.Process) + return &pipe +} + +func (c *ClusterClient) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) { + return c.Pipeline().Pipelined(fn) +} + +func (c *ClusterClient) WrapProcessPipeline( + fn func(oldProcess func([]Cmder) error) func([]Cmder) error, +) { + c.processPipeline = fn(c.processPipeline) + c.processTxPipeline = fn(c.processTxPipeline) +} + +func (c *ClusterClient) defaultProcessPipeline(cmds []Cmder) error { + cmdsMap := newCmdsMap() + err := c.mapCmdsByNode(cmds, cmdsMap) + if err != nil { + setCmdsErr(cmds, err) + return err + } + + for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ { + if attempt > 0 { + time.Sleep(c.retryBackoff(attempt)) + } + + failedCmds := newCmdsMap() + var wg sync.WaitGroup + + for node, cmds := range cmdsMap.m { + wg.Add(1) + go func(node *clusterNode, cmds []Cmder) { + defer wg.Done() + + cn, err := node.Client.getConn() + if err != nil { + if err == pool.ErrClosed { + c.mapCmdsByNode(cmds, failedCmds) + } else { + setCmdsErr(cmds, err) + } + return + } + + err = c.pipelineProcessCmds(node, cn, cmds, failedCmds) + node.Client.releaseConnStrict(cn, err) + }(node, cmds) + } + + wg.Wait() + if len(failedCmds.m) == 0 { + break + } + cmdsMap = failedCmds + } + + return cmdsFirstErr(cmds) +} + +type cmdsMap struct { + mu sync.Mutex + m map[*clusterNode][]Cmder +} + +func newCmdsMap() *cmdsMap { + return &cmdsMap{ + m: make(map[*clusterNode][]Cmder), + } +} + +func (c *ClusterClient) mapCmdsByNode(cmds []Cmder, cmdsMap *cmdsMap) error { + state, err := c.state.Get() + if err != nil { + setCmdsErr(cmds, err) + return err + } + + cmdsAreReadOnly := c.cmdsAreReadOnly(cmds) + for _, cmd := range cmds { + var node *clusterNode + var err error + if cmdsAreReadOnly { + _, node, err = c.cmdSlotAndNode(cmd) + } else { + slot := c.cmdSlot(cmd) + node, err = state.slotMasterNode(slot) + } + if err != nil { + return err + } + cmdsMap.mu.Lock() + cmdsMap.m[node] = append(cmdsMap.m[node], cmd) + cmdsMap.mu.Unlock() + } + return nil +} + +func (c *ClusterClient) cmdsAreReadOnly(cmds []Cmder) bool { + for _, cmd := range cmds { + cmdInfo := c.cmdInfo(cmd.Name()) + if cmdInfo == nil || !cmdInfo.ReadOnly { + return false + } + } + return true +} + +func (c *ClusterClient) pipelineProcessCmds( + node *clusterNode, cn *pool.Conn, cmds []Cmder, failedCmds *cmdsMap, +) error { + err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error { + return writeCmd(wr, cmds...) + }) + if err != nil { + setCmdsErr(cmds, err) + failedCmds.mu.Lock() + failedCmds.m[node] = cmds + failedCmds.mu.Unlock() + return err + } + + err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error { + return c.pipelineReadCmds(node, rd, cmds, failedCmds) + }) + return err +} + +func (c *ClusterClient) pipelineReadCmds( + node *clusterNode, rd *proto.Reader, cmds []Cmder, failedCmds *cmdsMap, +) error { + var firstErr error + for _, cmd := range cmds { + err := cmd.readReply(rd) + if err == nil { + continue + } + + if c.checkMovedErr(cmd, err, failedCmds) { + continue + } + + if internal.IsRedisError(err) { + continue + } + + failedCmds.mu.Lock() + failedCmds.m[node] = append(failedCmds.m[node], cmd) + failedCmds.mu.Unlock() + if firstErr == nil { + firstErr = err + } + } + return firstErr +} + +func (c *ClusterClient) checkMovedErr( + cmd Cmder, err error, failedCmds *cmdsMap, +) bool { + moved, ask, addr := internal.IsMovedError(err) + + if moved { + c.state.LazyReload() + + node, err := c.nodes.GetOrCreate(addr) + if err != nil { + return false + } + + failedCmds.mu.Lock() + failedCmds.m[node] = append(failedCmds.m[node], cmd) + failedCmds.mu.Unlock() + return true + } + + if ask { + node, err := c.nodes.GetOrCreate(addr) + if err != nil { + return false + } + + failedCmds.mu.Lock() + failedCmds.m[node] = append(failedCmds.m[node], NewCmd("ASKING"), cmd) + failedCmds.mu.Unlock() + return true + } + + return false +} + +// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC. +func (c *ClusterClient) TxPipeline() Pipeliner { + pipe := Pipeline{ + exec: c.processTxPipeline, + } + pipe.statefulCmdable.setProcessor(pipe.Process) + return &pipe +} + +func (c *ClusterClient) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) { + return c.TxPipeline().Pipelined(fn) +} + +func (c *ClusterClient) defaultProcessTxPipeline(cmds []Cmder) error { + state, err := c.state.Get() + if err != nil { + return err + } + + cmdsMap := c.mapCmdsBySlot(cmds) + for slot, cmds := range cmdsMap { + node, err := state.slotMasterNode(slot) + if err != nil { + setCmdsErr(cmds, err) + continue + } + cmdsMap := map[*clusterNode][]Cmder{node: cmds} + + for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ { + if attempt > 0 { + time.Sleep(c.retryBackoff(attempt)) + } + + failedCmds := newCmdsMap() + var wg sync.WaitGroup + + for node, cmds := range cmdsMap { + wg.Add(1) + go func(node *clusterNode, cmds []Cmder) { + defer wg.Done() + + cn, err := node.Client.getConn() + if err != nil { + if err == pool.ErrClosed { + c.mapCmdsByNode(cmds, failedCmds) + } else { + setCmdsErr(cmds, err) + } + return + } + + err = c.txPipelineProcessCmds(node, cn, cmds, failedCmds) + node.Client.releaseConnStrict(cn, err) + }(node, cmds) + } + + wg.Wait() + if len(failedCmds.m) == 0 { + break + } + cmdsMap = failedCmds.m + } + } + + return cmdsFirstErr(cmds) +} + +func (c *ClusterClient) mapCmdsBySlot(cmds []Cmder) map[int][]Cmder { + cmdsMap := make(map[int][]Cmder) + for _, cmd := range cmds { + slot := c.cmdSlot(cmd) + cmdsMap[slot] = append(cmdsMap[slot], cmd) + } + return cmdsMap +} + +func (c *ClusterClient) txPipelineProcessCmds( + node *clusterNode, cn *pool.Conn, cmds []Cmder, failedCmds *cmdsMap, +) error { + err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error { + return txPipelineWriteMulti(wr, cmds) + }) + if err != nil { + setCmdsErr(cmds, err) + failedCmds.mu.Lock() + failedCmds.m[node] = cmds + failedCmds.mu.Unlock() + return err + } + + err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error { + err := c.txPipelineReadQueued(rd, cmds, failedCmds) + if err != nil { + setCmdsErr(cmds, err) + return err + } + return pipelineReadCmds(rd, cmds) + }) + return err +} + +func (c *ClusterClient) txPipelineReadQueued( + rd *proto.Reader, cmds []Cmder, failedCmds *cmdsMap, +) error { + // Parse queued replies. + var statusCmd StatusCmd + if err := statusCmd.readReply(rd); err != nil { + return err + } + + for _, cmd := range cmds { + err := statusCmd.readReply(rd) + if err == nil { + continue + } + + if c.checkMovedErr(cmd, err, failedCmds) || internal.IsRedisError(err) { + continue + } + + return err + } + + // Parse number of replies. + line, err := rd.ReadLine() + if err != nil { + if err == Nil { + err = TxFailedErr + } + return err + } + + switch line[0] { + case proto.ErrorReply: + err := proto.ParseErrorReply(line) + for _, cmd := range cmds { + if !c.checkMovedErr(cmd, err, failedCmds) { + break + } + } + return err + case proto.ArrayReply: + // ok + default: + err := fmt.Errorf("redis: expected '*', but got line %q", line) + return err + } + + return nil +} + +func (c *ClusterClient) pubSub() *PubSub { + var node *clusterNode + pubsub := &PubSub{ + opt: c.opt.clientOptions(), + + newConn: func(channels []string) (*pool.Conn, error) { + if node != nil { + panic("node != nil") + } + + var err error + if len(channels) > 0 { + slot := hashtag.Slot(channels[0]) + node, err = c.slotMasterNode(slot) + } else { + node, err = c.nodes.Random() + } + if err != nil { + return nil, err + } + + cn, err := node.Client.newConn() + if err != nil { + node = nil + + return nil, err + } + + return cn, nil + }, + closeConn: func(cn *pool.Conn) error { + err := node.Client.connPool.CloseConn(cn) + node = nil + return err + }, + } + pubsub.init() + + return pubsub +} + +// Subscribe subscribes the client to the specified channels. +// Channels can be omitted to create empty subscription. +func (c *ClusterClient) Subscribe(channels ...string) *PubSub { + pubsub := c.pubSub() + if len(channels) > 0 { + _ = pubsub.Subscribe(channels...) + } + return pubsub +} + +// PSubscribe subscribes the client to the given patterns. +// Patterns can be omitted to create empty subscription. +func (c *ClusterClient) PSubscribe(channels ...string) *PubSub { + pubsub := c.pubSub() + if len(channels) > 0 { + _ = pubsub.PSubscribe(channels...) + } + return pubsub +} + +func appendUniqueNode(nodes []*clusterNode, node *clusterNode) []*clusterNode { + for _, n := range nodes { + if n == node { + return nodes + } + } + return append(nodes, node) +} + +func appendIfNotExists(ss []string, es ...string) []string { +loop: + for _, e := range es { + for _, s := range ss { + if s == e { + continue loop + } + } + ss = append(ss, e) + } + return ss +} + +func remove(ss []string, es ...string) []string { + if len(es) == 0 { + return ss[:0] + } + for _, e := range es { + for i, s := range ss { + if s == e { + ss = append(ss[:i], ss[i+1:]...) + break + } + } + } + return ss +} diff --git a/vendor/github.com/go-redis/redis/cluster_commands.go b/vendor/github.com/go-redis/redis/cluster_commands.go new file mode 100644 index 00000000000..dff62c902d0 --- /dev/null +++ b/vendor/github.com/go-redis/redis/cluster_commands.go @@ -0,0 +1,22 @@ +package redis + +import "sync/atomic" + +func (c *ClusterClient) DBSize() *IntCmd { + cmd := NewIntCmd("dbsize") + var size int64 + err := c.ForEachMaster(func(master *Client) error { + n, err := master.DBSize().Result() + if err != nil { + return err + } + atomic.AddInt64(&size, n) + return nil + }) + if err != nil { + cmd.setErr(err) + return cmd + } + cmd.val = size + return cmd +} diff --git a/vendor/github.com/go-redis/redis/command.go b/vendor/github.com/go-redis/redis/command.go new file mode 100644 index 00000000000..dde513be2d1 --- /dev/null +++ b/vendor/github.com/go-redis/redis/command.go @@ -0,0 +1,1966 @@ +package redis + +import ( + "fmt" + "net" + "strconv" + "strings" + "time" + + "github.com/go-redis/redis/internal" + "github.com/go-redis/redis/internal/proto" +) + +type Cmder interface { + Name() string + Args() []interface{} + stringArg(int) string + + readReply(rd *proto.Reader) error + setErr(error) + + readTimeout() *time.Duration + + Err() error +} + +func setCmdsErr(cmds []Cmder, e error) { + for _, cmd := range cmds { + if cmd.Err() == nil { + cmd.setErr(e) + } + } +} + +func cmdsFirstErr(cmds []Cmder) error { + for _, cmd := range cmds { + if err := cmd.Err(); err != nil { + return err + } + } + return nil +} + +func writeCmd(wr *proto.Writer, cmds ...Cmder) error { + for _, cmd := range cmds { + err := wr.WriteArgs(cmd.Args()) + if err != nil { + return err + } + } + return nil +} + +func cmdString(cmd Cmder, val interface{}) string { + var ss []string + for _, arg := range cmd.Args() { + ss = append(ss, fmt.Sprint(arg)) + } + s := strings.Join(ss, " ") + if err := cmd.Err(); err != nil { + return s + ": " + err.Error() + } + if val != nil { + switch vv := val.(type) { + case []byte: + return s + ": " + string(vv) + default: + return s + ": " + fmt.Sprint(val) + } + } + return s + +} + +func cmdFirstKeyPos(cmd Cmder, info *CommandInfo) int { + switch cmd.Name() { + case "eval", "evalsha": + if cmd.stringArg(2) != "0" { + return 3 + } + + return 0 + case "publish": + return 1 + } + if info == nil { + return 0 + } + return int(info.FirstKeyPos) +} + +//------------------------------------------------------------------------------ + +type baseCmd struct { + _args []interface{} + err error + + _readTimeout *time.Duration +} + +var _ Cmder = (*Cmd)(nil) + +func (cmd *baseCmd) Err() error { + return cmd.err +} + +func (cmd *baseCmd) Args() []interface{} { + return cmd._args +} + +func (cmd *baseCmd) stringArg(pos int) string { + if pos < 0 || pos >= len(cmd._args) { + return "" + } + s, _ := cmd._args[pos].(string) + return s +} + +func (cmd *baseCmd) Name() string { + if len(cmd._args) > 0 { + // Cmd name must be lower cased. + s := internal.ToLower(cmd.stringArg(0)) + cmd._args[0] = s + return s + } + return "" +} + +func (cmd *baseCmd) readTimeout() *time.Duration { + return cmd._readTimeout +} + +func (cmd *baseCmd) setReadTimeout(d time.Duration) { + cmd._readTimeout = &d +} + +func (cmd *baseCmd) setErr(e error) { + cmd.err = e +} + +//------------------------------------------------------------------------------ + +type Cmd struct { + baseCmd + + val interface{} +} + +func NewCmd(args ...interface{}) *Cmd { + return &Cmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *Cmd) Val() interface{} { + return cmd.val +} + +func (cmd *Cmd) Result() (interface{}, error) { + return cmd.val, cmd.err +} + +func (cmd *Cmd) String() (string, error) { + if cmd.err != nil { + return "", cmd.err + } + switch val := cmd.val.(type) { + case string: + return val, nil + default: + err := fmt.Errorf("redis: unexpected type=%T for String", val) + return "", err + } +} + +func (cmd *Cmd) Int() (int, error) { + if cmd.err != nil { + return 0, cmd.err + } + switch val := cmd.val.(type) { + case int64: + return int(val), nil + case string: + return strconv.Atoi(val) + default: + err := fmt.Errorf("redis: unexpected type=%T for Int", val) + return 0, err + } +} + +func (cmd *Cmd) Int64() (int64, error) { + if cmd.err != nil { + return 0, cmd.err + } + switch val := cmd.val.(type) { + case int64: + return val, nil + case string: + return strconv.ParseInt(val, 10, 64) + default: + err := fmt.Errorf("redis: unexpected type=%T for Int64", val) + return 0, err + } +} + +func (cmd *Cmd) Uint64() (uint64, error) { + if cmd.err != nil { + return 0, cmd.err + } + switch val := cmd.val.(type) { + case int64: + return uint64(val), nil + case string: + return strconv.ParseUint(val, 10, 64) + default: + err := fmt.Errorf("redis: unexpected type=%T for Uint64", val) + return 0, err + } +} + +func (cmd *Cmd) Float32() (float32, error) { + if cmd.err != nil { + return 0, cmd.err + } + switch val := cmd.val.(type) { + case int64: + return float32(val), nil + case string: + f, err := strconv.ParseFloat(val, 32) + if err != nil { + return 0, err + } + return float32(f), nil + default: + err := fmt.Errorf("redis: unexpected type=%T for Float32", val) + return 0, err + } +} + +func (cmd *Cmd) Float64() (float64, error) { + if cmd.err != nil { + return 0, cmd.err + } + switch val := cmd.val.(type) { + case int64: + return float64(val), nil + case string: + return strconv.ParseFloat(val, 64) + default: + err := fmt.Errorf("redis: unexpected type=%T for Float64", val) + return 0, err + } +} + +func (cmd *Cmd) Bool() (bool, error) { + if cmd.err != nil { + return false, cmd.err + } + switch val := cmd.val.(type) { + case int64: + return val != 0, nil + case string: + return strconv.ParseBool(val) + default: + err := fmt.Errorf("redis: unexpected type=%T for Bool", val) + return false, err + } +} + +func (cmd *Cmd) readReply(rd *proto.Reader) error { + cmd.val, cmd.err = rd.ReadReply(sliceParser) + return cmd.err +} + +// Implements proto.MultiBulkParse +func sliceParser(rd *proto.Reader, n int64) (interface{}, error) { + vals := make([]interface{}, 0, n) + for i := int64(0); i < n; i++ { + v, err := rd.ReadReply(sliceParser) + if err != nil { + if err == Nil { + vals = append(vals, nil) + continue + } + if err, ok := err.(proto.RedisError); ok { + vals = append(vals, err) + continue + } + return nil, err + } + + switch v := v.(type) { + case string: + vals = append(vals, v) + default: + vals = append(vals, v) + } + } + return vals, nil +} + +//------------------------------------------------------------------------------ + +type SliceCmd struct { + baseCmd + + val []interface{} +} + +var _ Cmder = (*SliceCmd)(nil) + +func NewSliceCmd(args ...interface{}) *SliceCmd { + return &SliceCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *SliceCmd) Val() []interface{} { + return cmd.val +} + +func (cmd *SliceCmd) Result() ([]interface{}, error) { + return cmd.val, cmd.err +} + +func (cmd *SliceCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *SliceCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(sliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.([]interface{}) + return nil +} + +//------------------------------------------------------------------------------ + +type StatusCmd struct { + baseCmd + + val string +} + +var _ Cmder = (*StatusCmd)(nil) + +func NewStatusCmd(args ...interface{}) *StatusCmd { + return &StatusCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *StatusCmd) Val() string { + return cmd.val +} + +func (cmd *StatusCmd) Result() (string, error) { + return cmd.val, cmd.err +} + +func (cmd *StatusCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *StatusCmd) readReply(rd *proto.Reader) error { + cmd.val, cmd.err = rd.ReadString() + return cmd.err +} + +//------------------------------------------------------------------------------ + +type IntCmd struct { + baseCmd + + val int64 +} + +var _ Cmder = (*IntCmd)(nil) + +func NewIntCmd(args ...interface{}) *IntCmd { + return &IntCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *IntCmd) Val() int64 { + return cmd.val +} + +func (cmd *IntCmd) Result() (int64, error) { + return cmd.val, cmd.err +} + +func (cmd *IntCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *IntCmd) readReply(rd *proto.Reader) error { + cmd.val, cmd.err = rd.ReadIntReply() + return cmd.err +} + +//------------------------------------------------------------------------------ + +type DurationCmd struct { + baseCmd + + val time.Duration + precision time.Duration +} + +var _ Cmder = (*DurationCmd)(nil) + +func NewDurationCmd(precision time.Duration, args ...interface{}) *DurationCmd { + return &DurationCmd{ + baseCmd: baseCmd{_args: args}, + precision: precision, + } +} + +func (cmd *DurationCmd) Val() time.Duration { + return cmd.val +} + +func (cmd *DurationCmd) Result() (time.Duration, error) { + return cmd.val, cmd.err +} + +func (cmd *DurationCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *DurationCmd) readReply(rd *proto.Reader) error { + var n int64 + n, cmd.err = rd.ReadIntReply() + if cmd.err != nil { + return cmd.err + } + cmd.val = time.Duration(n) * cmd.precision + return nil +} + +//------------------------------------------------------------------------------ + +type TimeCmd struct { + baseCmd + + val time.Time +} + +var _ Cmder = (*TimeCmd)(nil) + +func NewTimeCmd(args ...interface{}) *TimeCmd { + return &TimeCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *TimeCmd) Val() time.Time { + return cmd.val +} + +func (cmd *TimeCmd) Result() (time.Time, error) { + return cmd.val, cmd.err +} + +func (cmd *TimeCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *TimeCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(timeParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.(time.Time) + return nil +} + +// Implements proto.MultiBulkParse +func timeParser(rd *proto.Reader, n int64) (interface{}, error) { + if n != 2 { + return nil, fmt.Errorf("got %d elements, expected 2", n) + } + + sec, err := rd.ReadInt() + if err != nil { + return nil, err + } + + microsec, err := rd.ReadInt() + if err != nil { + return nil, err + } + + return time.Unix(sec, microsec*1000), nil +} + +//------------------------------------------------------------------------------ + +type BoolCmd struct { + baseCmd + + val bool +} + +var _ Cmder = (*BoolCmd)(nil) + +func NewBoolCmd(args ...interface{}) *BoolCmd { + return &BoolCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *BoolCmd) Val() bool { + return cmd.val +} + +func (cmd *BoolCmd) Result() (bool, error) { + return cmd.val, cmd.err +} + +func (cmd *BoolCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *BoolCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadReply(nil) + // `SET key value NX` returns nil when key already exists. But + // `SETNX key value` returns bool (0/1). So convert nil to bool. + // TODO: is this okay? + if cmd.err == Nil { + cmd.val = false + cmd.err = nil + return nil + } + if cmd.err != nil { + return cmd.err + } + switch v := v.(type) { + case int64: + cmd.val = v == 1 + return nil + case string: + cmd.val = v == "OK" + return nil + default: + cmd.err = fmt.Errorf("got %T, wanted int64 or string", v) + return cmd.err + } +} + +//------------------------------------------------------------------------------ + +type StringCmd struct { + baseCmd + + val string +} + +var _ Cmder = (*StringCmd)(nil) + +func NewStringCmd(args ...interface{}) *StringCmd { + return &StringCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *StringCmd) Val() string { + return cmd.val +} + +func (cmd *StringCmd) Result() (string, error) { + return cmd.Val(), cmd.err +} + +func (cmd *StringCmd) Bytes() ([]byte, error) { + return []byte(cmd.val), cmd.err +} + +func (cmd *StringCmd) Int() (int, error) { + if cmd.err != nil { + return 0, cmd.err + } + return strconv.Atoi(cmd.Val()) +} + +func (cmd *StringCmd) Int64() (int64, error) { + if cmd.err != nil { + return 0, cmd.err + } + return strconv.ParseInt(cmd.Val(), 10, 64) +} + +func (cmd *StringCmd) Uint64() (uint64, error) { + if cmd.err != nil { + return 0, cmd.err + } + return strconv.ParseUint(cmd.Val(), 10, 64) +} + +func (cmd *StringCmd) Float32() (float32, error) { + if cmd.err != nil { + return 0, cmd.err + } + f, err := strconv.ParseFloat(cmd.Val(), 32) + if err != nil { + return 0, err + } + return float32(f), nil +} + +func (cmd *StringCmd) Float64() (float64, error) { + if cmd.err != nil { + return 0, cmd.err + } + return strconv.ParseFloat(cmd.Val(), 64) +} + +func (cmd *StringCmd) Scan(val interface{}) error { + if cmd.err != nil { + return cmd.err + } + return proto.Scan([]byte(cmd.val), val) +} + +func (cmd *StringCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *StringCmd) readReply(rd *proto.Reader) error { + cmd.val, cmd.err = rd.ReadString() + return cmd.err +} + +//------------------------------------------------------------------------------ + +type FloatCmd struct { + baseCmd + + val float64 +} + +var _ Cmder = (*FloatCmd)(nil) + +func NewFloatCmd(args ...interface{}) *FloatCmd { + return &FloatCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *FloatCmd) Val() float64 { + return cmd.val +} + +func (cmd *FloatCmd) Result() (float64, error) { + return cmd.Val(), cmd.Err() +} + +func (cmd *FloatCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *FloatCmd) readReply(rd *proto.Reader) error { + cmd.val, cmd.err = rd.ReadFloatReply() + return cmd.err +} + +//------------------------------------------------------------------------------ + +type StringSliceCmd struct { + baseCmd + + val []string +} + +var _ Cmder = (*StringSliceCmd)(nil) + +func NewStringSliceCmd(args ...interface{}) *StringSliceCmd { + return &StringSliceCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *StringSliceCmd) Val() []string { + return cmd.val +} + +func (cmd *StringSliceCmd) Result() ([]string, error) { + return cmd.Val(), cmd.Err() +} + +func (cmd *StringSliceCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *StringSliceCmd) ScanSlice(container interface{}) error { + return proto.ScanSlice(cmd.Val(), container) +} + +func (cmd *StringSliceCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(stringSliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.([]string) + return nil +} + +// Implements proto.MultiBulkParse +func stringSliceParser(rd *proto.Reader, n int64) (interface{}, error) { + ss := make([]string, 0, n) + for i := int64(0); i < n; i++ { + switch s, err := rd.ReadString(); { + case err == Nil: + ss = append(ss, "") + case err != nil: + return nil, err + default: + ss = append(ss, s) + } + } + return ss, nil +} + +//------------------------------------------------------------------------------ + +type BoolSliceCmd struct { + baseCmd + + val []bool +} + +var _ Cmder = (*BoolSliceCmd)(nil) + +func NewBoolSliceCmd(args ...interface{}) *BoolSliceCmd { + return &BoolSliceCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *BoolSliceCmd) Val() []bool { + return cmd.val +} + +func (cmd *BoolSliceCmd) Result() ([]bool, error) { + return cmd.val, cmd.err +} + +func (cmd *BoolSliceCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *BoolSliceCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(boolSliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.([]bool) + return nil +} + +// Implements proto.MultiBulkParse +func boolSliceParser(rd *proto.Reader, n int64) (interface{}, error) { + bools := make([]bool, 0, n) + for i := int64(0); i < n; i++ { + n, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + bools = append(bools, n == 1) + } + return bools, nil +} + +//------------------------------------------------------------------------------ + +type StringStringMapCmd struct { + baseCmd + + val map[string]string +} + +var _ Cmder = (*StringStringMapCmd)(nil) + +func NewStringStringMapCmd(args ...interface{}) *StringStringMapCmd { + return &StringStringMapCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *StringStringMapCmd) Val() map[string]string { + return cmd.val +} + +func (cmd *StringStringMapCmd) Result() (map[string]string, error) { + return cmd.val, cmd.err +} + +func (cmd *StringStringMapCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *StringStringMapCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(stringStringMapParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.(map[string]string) + return nil +} + +// Implements proto.MultiBulkParse +func stringStringMapParser(rd *proto.Reader, n int64) (interface{}, error) { + m := make(map[string]string, n/2) + for i := int64(0); i < n; i += 2 { + key, err := rd.ReadString() + if err != nil { + return nil, err + } + + value, err := rd.ReadString() + if err != nil { + return nil, err + } + + m[key] = value + } + return m, nil +} + +//------------------------------------------------------------------------------ + +type StringIntMapCmd struct { + baseCmd + + val map[string]int64 +} + +var _ Cmder = (*StringIntMapCmd)(nil) + +func NewStringIntMapCmd(args ...interface{}) *StringIntMapCmd { + return &StringIntMapCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *StringIntMapCmd) Val() map[string]int64 { + return cmd.val +} + +func (cmd *StringIntMapCmd) Result() (map[string]int64, error) { + return cmd.val, cmd.err +} + +func (cmd *StringIntMapCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *StringIntMapCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(stringIntMapParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.(map[string]int64) + return nil +} + +// Implements proto.MultiBulkParse +func stringIntMapParser(rd *proto.Reader, n int64) (interface{}, error) { + m := make(map[string]int64, n/2) + for i := int64(0); i < n; i += 2 { + key, err := rd.ReadString() + if err != nil { + return nil, err + } + + n, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + + m[key] = n + } + return m, nil +} + +//------------------------------------------------------------------------------ + +type StringStructMapCmd struct { + baseCmd + + val map[string]struct{} +} + +var _ Cmder = (*StringStructMapCmd)(nil) + +func NewStringStructMapCmd(args ...interface{}) *StringStructMapCmd { + return &StringStructMapCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *StringStructMapCmd) Val() map[string]struct{} { + return cmd.val +} + +func (cmd *StringStructMapCmd) Result() (map[string]struct{}, error) { + return cmd.val, cmd.err +} + +func (cmd *StringStructMapCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *StringStructMapCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(stringStructMapParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.(map[string]struct{}) + return nil +} + +// Implements proto.MultiBulkParse +func stringStructMapParser(rd *proto.Reader, n int64) (interface{}, error) { + m := make(map[string]struct{}, n) + for i := int64(0); i < n; i++ { + key, err := rd.ReadString() + if err != nil { + return nil, err + } + + m[key] = struct{}{} + } + return m, nil +} + +//------------------------------------------------------------------------------ + +type XMessage struct { + ID string + Values map[string]interface{} +} + +type XMessageSliceCmd struct { + baseCmd + + val []XMessage +} + +var _ Cmder = (*XMessageSliceCmd)(nil) + +func NewXMessageSliceCmd(args ...interface{}) *XMessageSliceCmd { + return &XMessageSliceCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *XMessageSliceCmd) Val() []XMessage { + return cmd.val +} + +func (cmd *XMessageSliceCmd) Result() ([]XMessage, error) { + return cmd.val, cmd.err +} + +func (cmd *XMessageSliceCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *XMessageSliceCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(xMessageSliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.([]XMessage) + return nil +} + +// Implements proto.MultiBulkParse +func xMessageSliceParser(rd *proto.Reader, n int64) (interface{}, error) { + msgs := make([]XMessage, 0, n) + for i := int64(0); i < n; i++ { + _, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) { + id, err := rd.ReadString() + if err != nil { + return nil, err + } + + v, err := rd.ReadArrayReply(stringInterfaceMapParser) + if err != nil { + return nil, err + } + + msgs = append(msgs, XMessage{ + ID: id, + Values: v.(map[string]interface{}), + }) + return nil, nil + }) + if err != nil { + return nil, err + } + } + return msgs, nil +} + +// Implements proto.MultiBulkParse +func stringInterfaceMapParser(rd *proto.Reader, n int64) (interface{}, error) { + m := make(map[string]interface{}, n/2) + for i := int64(0); i < n; i += 2 { + key, err := rd.ReadString() + if err != nil { + return nil, err + } + + value, err := rd.ReadString() + if err != nil { + return nil, err + } + + m[key] = value + } + return m, nil +} + +//------------------------------------------------------------------------------ + +type XStream struct { + Stream string + Messages []XMessage +} + +type XStreamSliceCmd struct { + baseCmd + + val []XStream +} + +var _ Cmder = (*XStreamSliceCmd)(nil) + +func NewXStreamSliceCmd(args ...interface{}) *XStreamSliceCmd { + return &XStreamSliceCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *XStreamSliceCmd) Val() []XStream { + return cmd.val +} + +func (cmd *XStreamSliceCmd) Result() ([]XStream, error) { + return cmd.val, cmd.err +} + +func (cmd *XStreamSliceCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *XStreamSliceCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(xStreamSliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.([]XStream) + return nil +} + +// Implements proto.MultiBulkParse +func xStreamSliceParser(rd *proto.Reader, n int64) (interface{}, error) { + ret := make([]XStream, 0, n) + for i := int64(0); i < n; i++ { + _, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) { + if n != 2 { + return nil, fmt.Errorf("got %d, wanted 2", n) + } + + stream, err := rd.ReadString() + if err != nil { + return nil, err + } + + v, err := rd.ReadArrayReply(xMessageSliceParser) + if err != nil { + return nil, err + } + + ret = append(ret, XStream{ + Stream: stream, + Messages: v.([]XMessage), + }) + return nil, nil + }) + if err != nil { + return nil, err + } + } + return ret, nil +} + +//------------------------------------------------------------------------------ + +type XPending struct { + Count int64 + Lower string + Higher string + Consumers map[string]int64 +} + +type XPendingCmd struct { + baseCmd + val *XPending +} + +var _ Cmder = (*XPendingCmd)(nil) + +func NewXPendingCmd(args ...interface{}) *XPendingCmd { + return &XPendingCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *XPendingCmd) Val() *XPending { + return cmd.val +} + +func (cmd *XPendingCmd) Result() (*XPending, error) { + return cmd.val, cmd.err +} + +func (cmd *XPendingCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *XPendingCmd) readReply(rd *proto.Reader) error { + var info interface{} + info, cmd.err = rd.ReadArrayReply(xPendingParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = info.(*XPending) + return nil +} + +func xPendingParser(rd *proto.Reader, n int64) (interface{}, error) { + if n != 4 { + return nil, fmt.Errorf("got %d, wanted 4", n) + } + + count, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + + lower, err := rd.ReadString() + if err != nil && err != Nil { + return nil, err + } + + higher, err := rd.ReadString() + if err != nil && err != Nil { + return nil, err + } + + pending := &XPending{ + Count: count, + Lower: lower, + Higher: higher, + } + _, err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) { + for i := int64(0); i < n; i++ { + _, err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) { + if n != 2 { + return nil, fmt.Errorf("got %d, wanted 2", n) + } + + consumerName, err := rd.ReadString() + if err != nil { + return nil, err + } + + consumerPending, err := rd.ReadInt() + if err != nil { + return nil, err + } + + if pending.Consumers == nil { + pending.Consumers = make(map[string]int64) + } + pending.Consumers[consumerName] = consumerPending + + return nil, nil + }) + if err != nil { + return nil, err + } + } + return nil, nil + }) + if err != nil && err != Nil { + return nil, err + } + + return pending, nil +} + +//------------------------------------------------------------------------------ + +type XPendingExt struct { + Id string + Consumer string + Idle time.Duration + RetryCount int64 +} + +type XPendingExtCmd struct { + baseCmd + val []XPendingExt +} + +var _ Cmder = (*XPendingExtCmd)(nil) + +func NewXPendingExtCmd(args ...interface{}) *XPendingExtCmd { + return &XPendingExtCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *XPendingExtCmd) Val() []XPendingExt { + return cmd.val +} + +func (cmd *XPendingExtCmd) Result() ([]XPendingExt, error) { + return cmd.val, cmd.err +} + +func (cmd *XPendingExtCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *XPendingExtCmd) readReply(rd *proto.Reader) error { + var info interface{} + info, cmd.err = rd.ReadArrayReply(xPendingExtSliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = info.([]XPendingExt) + return nil +} + +func xPendingExtSliceParser(rd *proto.Reader, n int64) (interface{}, error) { + ret := make([]XPendingExt, 0, n) + for i := int64(0); i < n; i++ { + _, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) { + if n != 4 { + return nil, fmt.Errorf("got %d, wanted 4", n) + } + + id, err := rd.ReadString() + if err != nil { + return nil, err + } + + consumer, err := rd.ReadString() + if err != nil && err != Nil { + return nil, err + } + + idle, err := rd.ReadIntReply() + if err != nil && err != Nil { + return nil, err + } + + retryCount, err := rd.ReadIntReply() + if err != nil && err != Nil { + return nil, err + } + + ret = append(ret, XPendingExt{ + Id: id, + Consumer: consumer, + Idle: time.Duration(idle) * time.Millisecond, + RetryCount: retryCount, + }) + return nil, nil + }) + if err != nil { + return nil, err + } + } + return ret, nil +} + +//------------------------------------------------------------------------------ + +//------------------------------------------------------------------------------ + +type ZSliceCmd struct { + baseCmd + + val []Z +} + +var _ Cmder = (*ZSliceCmd)(nil) + +func NewZSliceCmd(args ...interface{}) *ZSliceCmd { + return &ZSliceCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *ZSliceCmd) Val() []Z { + return cmd.val +} + +func (cmd *ZSliceCmd) Result() ([]Z, error) { + return cmd.val, cmd.err +} + +func (cmd *ZSliceCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *ZSliceCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(zSliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.([]Z) + return nil +} + +// Implements proto.MultiBulkParse +func zSliceParser(rd *proto.Reader, n int64) (interface{}, error) { + zz := make([]Z, n/2) + for i := int64(0); i < n; i += 2 { + var err error + + z := &zz[i/2] + + z.Member, err = rd.ReadString() + if err != nil { + return nil, err + } + + z.Score, err = rd.ReadFloatReply() + if err != nil { + return nil, err + } + } + return zz, nil +} + +//------------------------------------------------------------------------------ + +type ZWithKeyCmd struct { + baseCmd + + val ZWithKey +} + +var _ Cmder = (*ZWithKeyCmd)(nil) + +func NewZWithKeyCmd(args ...interface{}) *ZWithKeyCmd { + return &ZWithKeyCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *ZWithKeyCmd) Val() ZWithKey { + return cmd.val +} + +func (cmd *ZWithKeyCmd) Result() (ZWithKey, error) { + return cmd.Val(), cmd.Err() +} + +func (cmd *ZWithKeyCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *ZWithKeyCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(zWithKeyParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.(ZWithKey) + return nil +} + +// Implements proto.MultiBulkParse +func zWithKeyParser(rd *proto.Reader, n int64) (interface{}, error) { + if n != 3 { + return nil, fmt.Errorf("got %d elements, expected 3", n) + } + + var z ZWithKey + var err error + + z.Key, err = rd.ReadString() + if err != nil { + return nil, err + } + z.Member, err = rd.ReadString() + if err != nil { + return nil, err + } + z.Score, err = rd.ReadFloatReply() + if err != nil { + return nil, err + } + return z, nil +} + +//------------------------------------------------------------------------------ + +type ScanCmd struct { + baseCmd + + page []string + cursor uint64 + + process func(cmd Cmder) error +} + +var _ Cmder = (*ScanCmd)(nil) + +func NewScanCmd(process func(cmd Cmder) error, args ...interface{}) *ScanCmd { + return &ScanCmd{ + baseCmd: baseCmd{_args: args}, + process: process, + } +} + +func (cmd *ScanCmd) Val() (keys []string, cursor uint64) { + return cmd.page, cmd.cursor +} + +func (cmd *ScanCmd) Result() (keys []string, cursor uint64, err error) { + return cmd.page, cmd.cursor, cmd.err +} + +func (cmd *ScanCmd) String() string { + return cmdString(cmd, cmd.page) +} + +func (cmd *ScanCmd) readReply(rd *proto.Reader) error { + cmd.page, cmd.cursor, cmd.err = rd.ReadScanReply() + return cmd.err +} + +// Iterator creates a new ScanIterator. +func (cmd *ScanCmd) Iterator() *ScanIterator { + return &ScanIterator{ + cmd: cmd, + } +} + +//------------------------------------------------------------------------------ + +type ClusterNode struct { + Id string + Addr string +} + +type ClusterSlot struct { + Start int + End int + Nodes []ClusterNode +} + +type ClusterSlotsCmd struct { + baseCmd + + val []ClusterSlot +} + +var _ Cmder = (*ClusterSlotsCmd)(nil) + +func NewClusterSlotsCmd(args ...interface{}) *ClusterSlotsCmd { + return &ClusterSlotsCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *ClusterSlotsCmd) Val() []ClusterSlot { + return cmd.val +} + +func (cmd *ClusterSlotsCmd) Result() ([]ClusterSlot, error) { + return cmd.Val(), cmd.Err() +} + +func (cmd *ClusterSlotsCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *ClusterSlotsCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(clusterSlotsParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.([]ClusterSlot) + return nil +} + +// Implements proto.MultiBulkParse +func clusterSlotsParser(rd *proto.Reader, n int64) (interface{}, error) { + slots := make([]ClusterSlot, n) + for i := 0; i < len(slots); i++ { + n, err := rd.ReadArrayLen() + if err != nil { + return nil, err + } + if n < 2 { + err := fmt.Errorf("redis: got %d elements in cluster info, expected at least 2", n) + return nil, err + } + + start, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + + end, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + + nodes := make([]ClusterNode, n-2) + for j := 0; j < len(nodes); j++ { + n, err := rd.ReadArrayLen() + if err != nil { + return nil, err + } + if n != 2 && n != 3 { + err := fmt.Errorf("got %d elements in cluster info address, expected 2 or 3", n) + return nil, err + } + + ip, err := rd.ReadString() + if err != nil { + return nil, err + } + + port, err := rd.ReadString() + if err != nil { + return nil, err + } + + nodes[j].Addr = net.JoinHostPort(ip, port) + + if n == 3 { + id, err := rd.ReadString() + if err != nil { + return nil, err + } + nodes[j].Id = id + } + } + + slots[i] = ClusterSlot{ + Start: int(start), + End: int(end), + Nodes: nodes, + } + } + return slots, nil +} + +//------------------------------------------------------------------------------ + +// GeoLocation is used with GeoAdd to add geospatial location. +type GeoLocation struct { + Name string + Longitude, Latitude, Dist float64 + GeoHash int64 +} + +// GeoRadiusQuery is used with GeoRadius to query geospatial index. +type GeoRadiusQuery struct { + Radius float64 + // Can be m, km, ft, or mi. Default is km. + Unit string + WithCoord bool + WithDist bool + WithGeoHash bool + Count int + // Can be ASC or DESC. Default is no sort order. + Sort string + Store string + StoreDist string +} + +type GeoLocationCmd struct { + baseCmd + + q *GeoRadiusQuery + locations []GeoLocation +} + +var _ Cmder = (*GeoLocationCmd)(nil) + +func NewGeoLocationCmd(q *GeoRadiusQuery, args ...interface{}) *GeoLocationCmd { + args = append(args, q.Radius) + if q.Unit != "" { + args = append(args, q.Unit) + } else { + args = append(args, "km") + } + if q.WithCoord { + args = append(args, "withcoord") + } + if q.WithDist { + args = append(args, "withdist") + } + if q.WithGeoHash { + args = append(args, "withhash") + } + if q.Count > 0 { + args = append(args, "count", q.Count) + } + if q.Sort != "" { + args = append(args, q.Sort) + } + if q.Store != "" { + args = append(args, "store") + args = append(args, q.Store) + } + if q.StoreDist != "" { + args = append(args, "storedist") + args = append(args, q.StoreDist) + } + return &GeoLocationCmd{ + baseCmd: baseCmd{_args: args}, + q: q, + } +} + +func (cmd *GeoLocationCmd) Val() []GeoLocation { + return cmd.locations +} + +func (cmd *GeoLocationCmd) Result() ([]GeoLocation, error) { + return cmd.locations, cmd.err +} + +func (cmd *GeoLocationCmd) String() string { + return cmdString(cmd, cmd.locations) +} + +func (cmd *GeoLocationCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(newGeoLocationSliceParser(cmd.q)) + if cmd.err != nil { + return cmd.err + } + cmd.locations = v.([]GeoLocation) + return nil +} + +func newGeoLocationParser(q *GeoRadiusQuery) proto.MultiBulkParse { + return func(rd *proto.Reader, n int64) (interface{}, error) { + var loc GeoLocation + var err error + + loc.Name, err = rd.ReadString() + if err != nil { + return nil, err + } + if q.WithDist { + loc.Dist, err = rd.ReadFloatReply() + if err != nil { + return nil, err + } + } + if q.WithGeoHash { + loc.GeoHash, err = rd.ReadIntReply() + if err != nil { + return nil, err + } + } + if q.WithCoord { + n, err := rd.ReadArrayLen() + if err != nil { + return nil, err + } + if n != 2 { + return nil, fmt.Errorf("got %d coordinates, expected 2", n) + } + + loc.Longitude, err = rd.ReadFloatReply() + if err != nil { + return nil, err + } + loc.Latitude, err = rd.ReadFloatReply() + if err != nil { + return nil, err + } + } + + return &loc, nil + } +} + +func newGeoLocationSliceParser(q *GeoRadiusQuery) proto.MultiBulkParse { + return func(rd *proto.Reader, n int64) (interface{}, error) { + locs := make([]GeoLocation, 0, n) + for i := int64(0); i < n; i++ { + v, err := rd.ReadReply(newGeoLocationParser(q)) + if err != nil { + return nil, err + } + switch vv := v.(type) { + case string: + locs = append(locs, GeoLocation{ + Name: vv, + }) + case *GeoLocation: + locs = append(locs, *vv) + default: + return nil, fmt.Errorf("got %T, expected string or *GeoLocation", v) + } + } + return locs, nil + } +} + +//------------------------------------------------------------------------------ + +type GeoPos struct { + Longitude, Latitude float64 +} + +type GeoPosCmd struct { + baseCmd + + positions []*GeoPos +} + +var _ Cmder = (*GeoPosCmd)(nil) + +func NewGeoPosCmd(args ...interface{}) *GeoPosCmd { + return &GeoPosCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *GeoPosCmd) Val() []*GeoPos { + return cmd.positions +} + +func (cmd *GeoPosCmd) Result() ([]*GeoPos, error) { + return cmd.Val(), cmd.Err() +} + +func (cmd *GeoPosCmd) String() string { + return cmdString(cmd, cmd.positions) +} + +func (cmd *GeoPosCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(geoPosSliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.positions = v.([]*GeoPos) + return nil +} + +func geoPosSliceParser(rd *proto.Reader, n int64) (interface{}, error) { + positions := make([]*GeoPos, 0, n) + for i := int64(0); i < n; i++ { + v, err := rd.ReadReply(geoPosParser) + if err != nil { + if err == Nil { + positions = append(positions, nil) + continue + } + return nil, err + } + switch v := v.(type) { + case *GeoPos: + positions = append(positions, v) + default: + return nil, fmt.Errorf("got %T, expected *GeoPos", v) + } + } + return positions, nil +} + +func geoPosParser(rd *proto.Reader, n int64) (interface{}, error) { + var pos GeoPos + var err error + + pos.Longitude, err = rd.ReadFloatReply() + if err != nil { + return nil, err + } + + pos.Latitude, err = rd.ReadFloatReply() + if err != nil { + return nil, err + } + + return &pos, nil +} + +//------------------------------------------------------------------------------ + +type CommandInfo struct { + Name string + Arity int8 + Flags []string + FirstKeyPos int8 + LastKeyPos int8 + StepCount int8 + ReadOnly bool +} + +type CommandsInfoCmd struct { + baseCmd + + val map[string]*CommandInfo +} + +var _ Cmder = (*CommandsInfoCmd)(nil) + +func NewCommandsInfoCmd(args ...interface{}) *CommandsInfoCmd { + return &CommandsInfoCmd{ + baseCmd: baseCmd{_args: args}, + } +} + +func (cmd *CommandsInfoCmd) Val() map[string]*CommandInfo { + return cmd.val +} + +func (cmd *CommandsInfoCmd) Result() (map[string]*CommandInfo, error) { + return cmd.Val(), cmd.Err() +} + +func (cmd *CommandsInfoCmd) String() string { + return cmdString(cmd, cmd.val) +} + +func (cmd *CommandsInfoCmd) readReply(rd *proto.Reader) error { + var v interface{} + v, cmd.err = rd.ReadArrayReply(commandInfoSliceParser) + if cmd.err != nil { + return cmd.err + } + cmd.val = v.(map[string]*CommandInfo) + return nil +} + +// Implements proto.MultiBulkParse +func commandInfoSliceParser(rd *proto.Reader, n int64) (interface{}, error) { + m := make(map[string]*CommandInfo, n) + for i := int64(0); i < n; i++ { + v, err := rd.ReadReply(commandInfoParser) + if err != nil { + return nil, err + } + vv := v.(*CommandInfo) + m[vv.Name] = vv + + } + return m, nil +} + +func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) { + var cmd CommandInfo + var err error + + if n != 6 { + return nil, fmt.Errorf("redis: got %d elements in COMMAND reply, wanted 6", n) + } + + cmd.Name, err = rd.ReadString() + if err != nil { + return nil, err + } + + arity, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + cmd.Arity = int8(arity) + + flags, err := rd.ReadReply(stringSliceParser) + if err != nil { + return nil, err + } + cmd.Flags = flags.([]string) + + firstKeyPos, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + cmd.FirstKeyPos = int8(firstKeyPos) + + lastKeyPos, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + cmd.LastKeyPos = int8(lastKeyPos) + + stepCount, err := rd.ReadIntReply() + if err != nil { + return nil, err + } + cmd.StepCount = int8(stepCount) + + for _, flag := range cmd.Flags { + if flag == "readonly" { + cmd.ReadOnly = true + break + } + } + + return &cmd, nil +} + +//------------------------------------------------------------------------------ + +type cmdsInfoCache struct { + fn func() (map[string]*CommandInfo, error) + + once internal.Once + cmds map[string]*CommandInfo +} + +func newCmdsInfoCache(fn func() (map[string]*CommandInfo, error)) *cmdsInfoCache { + return &cmdsInfoCache{ + fn: fn, + } +} + +func (c *cmdsInfoCache) Get() (map[string]*CommandInfo, error) { + err := c.once.Do(func() error { + cmds, err := c.fn() + if err != nil { + return err + } + c.cmds = cmds + return nil + }) + return c.cmds, err +} diff --git a/vendor/github.com/go-redis/redis/commands.go b/vendor/github.com/go-redis/redis/commands.go new file mode 100644 index 00000000000..653e4abe963 --- /dev/null +++ b/vendor/github.com/go-redis/redis/commands.go @@ -0,0 +1,2583 @@ +package redis + +import ( + "errors" + "io" + "time" + + "github.com/go-redis/redis/internal" +) + +func usePrecise(dur time.Duration) bool { + return dur < time.Second || dur%time.Second != 0 +} + +func formatMs(dur time.Duration) int64 { + if dur > 0 && dur < time.Millisecond { + internal.Logf( + "specified duration is %s, but minimal supported value is %s", + dur, time.Millisecond, + ) + } + return int64(dur / time.Millisecond) +} + +func formatSec(dur time.Duration) int64 { + if dur > 0 && dur < time.Second { + internal.Logf( + "specified duration is %s, but minimal supported value is %s", + dur, time.Second, + ) + } + return int64(dur / time.Second) +} + +func appendArgs(dst, src []interface{}) []interface{} { + if len(src) == 1 { + if ss, ok := src[0].([]string); ok { + for _, s := range ss { + dst = append(dst, s) + } + return dst + } + } + + for _, v := range src { + dst = append(dst, v) + } + return dst +} + +type Cmdable interface { + Pipeline() Pipeliner + Pipelined(fn func(Pipeliner) error) ([]Cmder, error) + + TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) + TxPipeline() Pipeliner + + Command() *CommandsInfoCmd + ClientGetName() *StringCmd + Echo(message interface{}) *StringCmd + Ping() *StatusCmd + Quit() *StatusCmd + Del(keys ...string) *IntCmd + Unlink(keys ...string) *IntCmd + Dump(key string) *StringCmd + Exists(keys ...string) *IntCmd + Expire(key string, expiration time.Duration) *BoolCmd + ExpireAt(key string, tm time.Time) *BoolCmd + Keys(pattern string) *StringSliceCmd + Migrate(host, port, key string, db int64, timeout time.Duration) *StatusCmd + Move(key string, db int64) *BoolCmd + ObjectRefCount(key string) *IntCmd + ObjectEncoding(key string) *StringCmd + ObjectIdleTime(key string) *DurationCmd + Persist(key string) *BoolCmd + PExpire(key string, expiration time.Duration) *BoolCmd + PExpireAt(key string, tm time.Time) *BoolCmd + PTTL(key string) *DurationCmd + RandomKey() *StringCmd + Rename(key, newkey string) *StatusCmd + RenameNX(key, newkey string) *BoolCmd + Restore(key string, ttl time.Duration, value string) *StatusCmd + RestoreReplace(key string, ttl time.Duration, value string) *StatusCmd + Sort(key string, sort *Sort) *StringSliceCmd + SortStore(key, store string, sort *Sort) *IntCmd + SortInterfaces(key string, sort *Sort) *SliceCmd + Touch(keys ...string) *IntCmd + TTL(key string) *DurationCmd + Type(key string) *StatusCmd + Scan(cursor uint64, match string, count int64) *ScanCmd + SScan(key string, cursor uint64, match string, count int64) *ScanCmd + HScan(key string, cursor uint64, match string, count int64) *ScanCmd + ZScan(key string, cursor uint64, match string, count int64) *ScanCmd + Append(key, value string) *IntCmd + BitCount(key string, bitCount *BitCount) *IntCmd + BitOpAnd(destKey string, keys ...string) *IntCmd + BitOpOr(destKey string, keys ...string) *IntCmd + BitOpXor(destKey string, keys ...string) *IntCmd + BitOpNot(destKey string, key string) *IntCmd + BitPos(key string, bit int64, pos ...int64) *IntCmd + Decr(key string) *IntCmd + DecrBy(key string, decrement int64) *IntCmd + Get(key string) *StringCmd + GetBit(key string, offset int64) *IntCmd + GetRange(key string, start, end int64) *StringCmd + GetSet(key string, value interface{}) *StringCmd + Incr(key string) *IntCmd + IncrBy(key string, value int64) *IntCmd + IncrByFloat(key string, value float64) *FloatCmd + MGet(keys ...string) *SliceCmd + MSet(pairs ...interface{}) *StatusCmd + MSetNX(pairs ...interface{}) *BoolCmd + Set(key string, value interface{}, expiration time.Duration) *StatusCmd + SetBit(key string, offset int64, value int) *IntCmd + SetNX(key string, value interface{}, expiration time.Duration) *BoolCmd + SetXX(key string, value interface{}, expiration time.Duration) *BoolCmd + SetRange(key string, offset int64, value string) *IntCmd + StrLen(key string) *IntCmd + HDel(key string, fields ...string) *IntCmd + HExists(key, field string) *BoolCmd + HGet(key, field string) *StringCmd + HGetAll(key string) *StringStringMapCmd + HIncrBy(key, field string, incr int64) *IntCmd + HIncrByFloat(key, field string, incr float64) *FloatCmd + HKeys(key string) *StringSliceCmd + HLen(key string) *IntCmd + HMGet(key string, fields ...string) *SliceCmd + HMSet(key string, fields map[string]interface{}) *StatusCmd + HSet(key, field string, value interface{}) *BoolCmd + HSetNX(key, field string, value interface{}) *BoolCmd + HVals(key string) *StringSliceCmd + BLPop(timeout time.Duration, keys ...string) *StringSliceCmd + BRPop(timeout time.Duration, keys ...string) *StringSliceCmd + BRPopLPush(source, destination string, timeout time.Duration) *StringCmd + LIndex(key string, index int64) *StringCmd + LInsert(key, op string, pivot, value interface{}) *IntCmd + LInsertBefore(key string, pivot, value interface{}) *IntCmd + LInsertAfter(key string, pivot, value interface{}) *IntCmd + LLen(key string) *IntCmd + LPop(key string) *StringCmd + LPush(key string, values ...interface{}) *IntCmd + LPushX(key string, value interface{}) *IntCmd + LRange(key string, start, stop int64) *StringSliceCmd + LRem(key string, count int64, value interface{}) *IntCmd + LSet(key string, index int64, value interface{}) *StatusCmd + LTrim(key string, start, stop int64) *StatusCmd + RPop(key string) *StringCmd + RPopLPush(source, destination string) *StringCmd + RPush(key string, values ...interface{}) *IntCmd + RPushX(key string, value interface{}) *IntCmd + SAdd(key string, members ...interface{}) *IntCmd + SCard(key string) *IntCmd + SDiff(keys ...string) *StringSliceCmd + SDiffStore(destination string, keys ...string) *IntCmd + SInter(keys ...string) *StringSliceCmd + SInterStore(destination string, keys ...string) *IntCmd + SIsMember(key string, member interface{}) *BoolCmd + SMembers(key string) *StringSliceCmd + SMembersMap(key string) *StringStructMapCmd + SMove(source, destination string, member interface{}) *BoolCmd + SPop(key string) *StringCmd + SPopN(key string, count int64) *StringSliceCmd + SRandMember(key string) *StringCmd + SRandMemberN(key string, count int64) *StringSliceCmd + SRem(key string, members ...interface{}) *IntCmd + SUnion(keys ...string) *StringSliceCmd + SUnionStore(destination string, keys ...string) *IntCmd + XAdd(a *XAddArgs) *StringCmd + XDel(stream string, ids ...string) *IntCmd + XLen(stream string) *IntCmd + XRange(stream, start, stop string) *XMessageSliceCmd + XRangeN(stream, start, stop string, count int64) *XMessageSliceCmd + XRevRange(stream string, start, stop string) *XMessageSliceCmd + XRevRangeN(stream string, start, stop string, count int64) *XMessageSliceCmd + XRead(a *XReadArgs) *XStreamSliceCmd + XReadStreams(streams ...string) *XStreamSliceCmd + XGroupCreate(stream, group, start string) *StatusCmd + XGroupCreateMkStream(stream, group, start string) *StatusCmd + XGroupSetID(stream, group, start string) *StatusCmd + XGroupDestroy(stream, group string) *IntCmd + XGroupDelConsumer(stream, group, consumer string) *IntCmd + XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd + XAck(stream, group string, ids ...string) *IntCmd + XPending(stream, group string) *XPendingCmd + XPendingExt(a *XPendingExtArgs) *XPendingExtCmd + XClaim(a *XClaimArgs) *XMessageSliceCmd + XClaimJustID(a *XClaimArgs) *StringSliceCmd + XTrim(key string, maxLen int64) *IntCmd + XTrimApprox(key string, maxLen int64) *IntCmd + BZPopMax(timeout time.Duration, keys ...string) *ZWithKeyCmd + BZPopMin(timeout time.Duration, keys ...string) *ZWithKeyCmd + ZAdd(key string, members ...Z) *IntCmd + ZAddNX(key string, members ...Z) *IntCmd + ZAddXX(key string, members ...Z) *IntCmd + ZAddCh(key string, members ...Z) *IntCmd + ZAddNXCh(key string, members ...Z) *IntCmd + ZAddXXCh(key string, members ...Z) *IntCmd + ZIncr(key string, member Z) *FloatCmd + ZIncrNX(key string, member Z) *FloatCmd + ZIncrXX(key string, member Z) *FloatCmd + ZCard(key string) *IntCmd + ZCount(key, min, max string) *IntCmd + ZLexCount(key, min, max string) *IntCmd + ZIncrBy(key string, increment float64, member string) *FloatCmd + ZInterStore(destination string, store ZStore, keys ...string) *IntCmd + ZPopMax(key string, count ...int64) *ZSliceCmd + ZPopMin(key string, count ...int64) *ZSliceCmd + ZRange(key string, start, stop int64) *StringSliceCmd + ZRangeWithScores(key string, start, stop int64) *ZSliceCmd + ZRangeByScore(key string, opt ZRangeBy) *StringSliceCmd + ZRangeByLex(key string, opt ZRangeBy) *StringSliceCmd + ZRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd + ZRank(key, member string) *IntCmd + ZRem(key string, members ...interface{}) *IntCmd + ZRemRangeByRank(key string, start, stop int64) *IntCmd + ZRemRangeByScore(key, min, max string) *IntCmd + ZRemRangeByLex(key, min, max string) *IntCmd + ZRevRange(key string, start, stop int64) *StringSliceCmd + ZRevRangeWithScores(key string, start, stop int64) *ZSliceCmd + ZRevRangeByScore(key string, opt ZRangeBy) *StringSliceCmd + ZRevRangeByLex(key string, opt ZRangeBy) *StringSliceCmd + ZRevRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd + ZRevRank(key, member string) *IntCmd + ZScore(key, member string) *FloatCmd + ZUnionStore(dest string, store ZStore, keys ...string) *IntCmd + PFAdd(key string, els ...interface{}) *IntCmd + PFCount(keys ...string) *IntCmd + PFMerge(dest string, keys ...string) *StatusCmd + BgRewriteAOF() *StatusCmd + BgSave() *StatusCmd + ClientKill(ipPort string) *StatusCmd + ClientKillByFilter(keys ...string) *IntCmd + ClientList() *StringCmd + ClientPause(dur time.Duration) *BoolCmd + ClientID() *IntCmd + ConfigGet(parameter string) *SliceCmd + ConfigResetStat() *StatusCmd + ConfigSet(parameter, value string) *StatusCmd + ConfigRewrite() *StatusCmd + DBSize() *IntCmd + FlushAll() *StatusCmd + FlushAllAsync() *StatusCmd + FlushDB() *StatusCmd + FlushDBAsync() *StatusCmd + Info(section ...string) *StringCmd + LastSave() *IntCmd + Save() *StatusCmd + Shutdown() *StatusCmd + ShutdownSave() *StatusCmd + ShutdownNoSave() *StatusCmd + SlaveOf(host, port string) *StatusCmd + Time() *TimeCmd + Eval(script string, keys []string, args ...interface{}) *Cmd + EvalSha(sha1 string, keys []string, args ...interface{}) *Cmd + ScriptExists(hashes ...string) *BoolSliceCmd + ScriptFlush() *StatusCmd + ScriptKill() *StatusCmd + ScriptLoad(script string) *StringCmd + DebugObject(key string) *StringCmd + Publish(channel string, message interface{}) *IntCmd + PubSubChannels(pattern string) *StringSliceCmd + PubSubNumSub(channels ...string) *StringIntMapCmd + PubSubNumPat() *IntCmd + ClusterSlots() *ClusterSlotsCmd + ClusterNodes() *StringCmd + ClusterMeet(host, port string) *StatusCmd + ClusterForget(nodeID string) *StatusCmd + ClusterReplicate(nodeID string) *StatusCmd + ClusterResetSoft() *StatusCmd + ClusterResetHard() *StatusCmd + ClusterInfo() *StringCmd + ClusterKeySlot(key string) *IntCmd + ClusterGetKeysInSlot(slot int, count int) *StringSliceCmd + ClusterCountFailureReports(nodeID string) *IntCmd + ClusterCountKeysInSlot(slot int) *IntCmd + ClusterDelSlots(slots ...int) *StatusCmd + ClusterDelSlotsRange(min, max int) *StatusCmd + ClusterSaveConfig() *StatusCmd + ClusterSlaves(nodeID string) *StringSliceCmd + ClusterFailover() *StatusCmd + ClusterAddSlots(slots ...int) *StatusCmd + ClusterAddSlotsRange(min, max int) *StatusCmd + GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd + GeoPos(key string, members ...string) *GeoPosCmd + GeoRadius(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd + GeoRadiusRO(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd + GeoRadiusByMember(key, member string, query *GeoRadiusQuery) *GeoLocationCmd + GeoRadiusByMemberRO(key, member string, query *GeoRadiusQuery) *GeoLocationCmd + GeoDist(key string, member1, member2, unit string) *FloatCmd + GeoHash(key string, members ...string) *StringSliceCmd + ReadOnly() *StatusCmd + ReadWrite() *StatusCmd + MemoryUsage(key string, samples ...int) *IntCmd +} + +type StatefulCmdable interface { + Cmdable + Auth(password string) *StatusCmd + Select(index int) *StatusCmd + SwapDB(index1, index2 int) *StatusCmd + ClientSetName(name string) *BoolCmd +} + +var _ Cmdable = (*Client)(nil) +var _ Cmdable = (*Tx)(nil) +var _ Cmdable = (*Ring)(nil) +var _ Cmdable = (*ClusterClient)(nil) + +type cmdable struct { + process func(cmd Cmder) error +} + +func (c *cmdable) setProcessor(fn func(Cmder) error) { + c.process = fn +} + +type statefulCmdable struct { + cmdable + process func(cmd Cmder) error +} + +func (c *statefulCmdable) setProcessor(fn func(Cmder) error) { + c.process = fn + c.cmdable.setProcessor(fn) +} + +//------------------------------------------------------------------------------ + +func (c *statefulCmdable) Auth(password string) *StatusCmd { + cmd := NewStatusCmd("auth", password) + c.process(cmd) + return cmd +} + +func (c *cmdable) Echo(message interface{}) *StringCmd { + cmd := NewStringCmd("echo", message) + c.process(cmd) + return cmd +} + +func (c *cmdable) Ping() *StatusCmd { + cmd := NewStatusCmd("ping") + c.process(cmd) + return cmd +} + +func (c *cmdable) Wait(numSlaves int, timeout time.Duration) *IntCmd { + cmd := NewIntCmd("wait", numSlaves, int(timeout/time.Millisecond)) + c.process(cmd) + return cmd +} + +func (c *cmdable) Quit() *StatusCmd { + panic("not implemented") +} + +func (c *statefulCmdable) Select(index int) *StatusCmd { + cmd := NewStatusCmd("select", index) + c.process(cmd) + return cmd +} + +func (c *statefulCmdable) SwapDB(index1, index2 int) *StatusCmd { + cmd := NewStatusCmd("swapdb", index1, index2) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +func (c *cmdable) Command() *CommandsInfoCmd { + cmd := NewCommandsInfoCmd("command") + c.process(cmd) + return cmd +} + +func (c *cmdable) Del(keys ...string) *IntCmd { + args := make([]interface{}, 1+len(keys)) + args[0] = "del" + for i, key := range keys { + args[1+i] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) Unlink(keys ...string) *IntCmd { + args := make([]interface{}, 1+len(keys)) + args[0] = "unlink" + for i, key := range keys { + args[1+i] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) Dump(key string) *StringCmd { + cmd := NewStringCmd("dump", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) Exists(keys ...string) *IntCmd { + args := make([]interface{}, 1+len(keys)) + args[0] = "exists" + for i, key := range keys { + args[1+i] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) Expire(key string, expiration time.Duration) *BoolCmd { + cmd := NewBoolCmd("expire", key, formatSec(expiration)) + c.process(cmd) + return cmd +} + +func (c *cmdable) ExpireAt(key string, tm time.Time) *BoolCmd { + cmd := NewBoolCmd("expireat", key, tm.Unix()) + c.process(cmd) + return cmd +} + +func (c *cmdable) Keys(pattern string) *StringSliceCmd { + cmd := NewStringSliceCmd("keys", pattern) + c.process(cmd) + return cmd +} + +func (c *cmdable) Migrate(host, port, key string, db int64, timeout time.Duration) *StatusCmd { + cmd := NewStatusCmd( + "migrate", + host, + port, + key, + db, + formatMs(timeout), + ) + cmd.setReadTimeout(timeout) + c.process(cmd) + return cmd +} + +func (c *cmdable) Move(key string, db int64) *BoolCmd { + cmd := NewBoolCmd("move", key, db) + c.process(cmd) + return cmd +} + +func (c *cmdable) ObjectRefCount(key string) *IntCmd { + cmd := NewIntCmd("object", "refcount", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) ObjectEncoding(key string) *StringCmd { + cmd := NewStringCmd("object", "encoding", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) ObjectIdleTime(key string) *DurationCmd { + cmd := NewDurationCmd(time.Second, "object", "idletime", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) Persist(key string) *BoolCmd { + cmd := NewBoolCmd("persist", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) PExpire(key string, expiration time.Duration) *BoolCmd { + cmd := NewBoolCmd("pexpire", key, formatMs(expiration)) + c.process(cmd) + return cmd +} + +func (c *cmdable) PExpireAt(key string, tm time.Time) *BoolCmd { + cmd := NewBoolCmd( + "pexpireat", + key, + tm.UnixNano()/int64(time.Millisecond), + ) + c.process(cmd) + return cmd +} + +func (c *cmdable) PTTL(key string) *DurationCmd { + cmd := NewDurationCmd(time.Millisecond, "pttl", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) RandomKey() *StringCmd { + cmd := NewStringCmd("randomkey") + c.process(cmd) + return cmd +} + +func (c *cmdable) Rename(key, newkey string) *StatusCmd { + cmd := NewStatusCmd("rename", key, newkey) + c.process(cmd) + return cmd +} + +func (c *cmdable) RenameNX(key, newkey string) *BoolCmd { + cmd := NewBoolCmd("renamenx", key, newkey) + c.process(cmd) + return cmd +} + +func (c *cmdable) Restore(key string, ttl time.Duration, value string) *StatusCmd { + cmd := NewStatusCmd( + "restore", + key, + formatMs(ttl), + value, + ) + c.process(cmd) + return cmd +} + +func (c *cmdable) RestoreReplace(key string, ttl time.Duration, value string) *StatusCmd { + cmd := NewStatusCmd( + "restore", + key, + formatMs(ttl), + value, + "replace", + ) + c.process(cmd) + return cmd +} + +type Sort struct { + By string + Offset, Count int64 + Get []string + Order string + Alpha bool +} + +func (sort *Sort) args(key string) []interface{} { + args := []interface{}{"sort", key} + if sort.By != "" { + args = append(args, "by", sort.By) + } + if sort.Offset != 0 || sort.Count != 0 { + args = append(args, "limit", sort.Offset, sort.Count) + } + for _, get := range sort.Get { + args = append(args, "get", get) + } + if sort.Order != "" { + args = append(args, sort.Order) + } + if sort.Alpha { + args = append(args, "alpha") + } + return args +} + +func (c *cmdable) Sort(key string, sort *Sort) *StringSliceCmd { + cmd := NewStringSliceCmd(sort.args(key)...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SortStore(key, store string, sort *Sort) *IntCmd { + args := sort.args(key) + if store != "" { + args = append(args, "store", store) + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SortInterfaces(key string, sort *Sort) *SliceCmd { + cmd := NewSliceCmd(sort.args(key)...) + c.process(cmd) + return cmd +} + +func (c *cmdable) Touch(keys ...string) *IntCmd { + args := make([]interface{}, len(keys)+1) + args[0] = "touch" + for i, key := range keys { + args[i+1] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) TTL(key string) *DurationCmd { + cmd := NewDurationCmd(time.Second, "ttl", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) Type(key string) *StatusCmd { + cmd := NewStatusCmd("type", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) Scan(cursor uint64, match string, count int64) *ScanCmd { + args := []interface{}{"scan", cursor} + if match != "" { + args = append(args, "match", match) + } + if count > 0 { + args = append(args, "count", count) + } + cmd := NewScanCmd(c.process, args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SScan(key string, cursor uint64, match string, count int64) *ScanCmd { + args := []interface{}{"sscan", key, cursor} + if match != "" { + args = append(args, "match", match) + } + if count > 0 { + args = append(args, "count", count) + } + cmd := NewScanCmd(c.process, args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) HScan(key string, cursor uint64, match string, count int64) *ScanCmd { + args := []interface{}{"hscan", key, cursor} + if match != "" { + args = append(args, "match", match) + } + if count > 0 { + args = append(args, "count", count) + } + cmd := NewScanCmd(c.process, args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZScan(key string, cursor uint64, match string, count int64) *ScanCmd { + args := []interface{}{"zscan", key, cursor} + if match != "" { + args = append(args, "match", match) + } + if count > 0 { + args = append(args, "count", count) + } + cmd := NewScanCmd(c.process, args...) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +func (c *cmdable) Append(key, value string) *IntCmd { + cmd := NewIntCmd("append", key, value) + c.process(cmd) + return cmd +} + +type BitCount struct { + Start, End int64 +} + +func (c *cmdable) BitCount(key string, bitCount *BitCount) *IntCmd { + args := []interface{}{"bitcount", key} + if bitCount != nil { + args = append( + args, + bitCount.Start, + bitCount.End, + ) + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) bitOp(op, destKey string, keys ...string) *IntCmd { + args := make([]interface{}, 3+len(keys)) + args[0] = "bitop" + args[1] = op + args[2] = destKey + for i, key := range keys { + args[3+i] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) BitOpAnd(destKey string, keys ...string) *IntCmd { + return c.bitOp("and", destKey, keys...) +} + +func (c *cmdable) BitOpOr(destKey string, keys ...string) *IntCmd { + return c.bitOp("or", destKey, keys...) +} + +func (c *cmdable) BitOpXor(destKey string, keys ...string) *IntCmd { + return c.bitOp("xor", destKey, keys...) +} + +func (c *cmdable) BitOpNot(destKey string, key string) *IntCmd { + return c.bitOp("not", destKey, key) +} + +func (c *cmdable) BitPos(key string, bit int64, pos ...int64) *IntCmd { + args := make([]interface{}, 3+len(pos)) + args[0] = "bitpos" + args[1] = key + args[2] = bit + switch len(pos) { + case 0: + case 1: + args[3] = pos[0] + case 2: + args[3] = pos[0] + args[4] = pos[1] + default: + panic("too many arguments") + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) Decr(key string) *IntCmd { + cmd := NewIntCmd("decr", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) DecrBy(key string, decrement int64) *IntCmd { + cmd := NewIntCmd("decrby", key, decrement) + c.process(cmd) + return cmd +} + +// Redis `GET key` command. It returns redis.Nil error when key does not exist. +func (c *cmdable) Get(key string) *StringCmd { + cmd := NewStringCmd("get", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) GetBit(key string, offset int64) *IntCmd { + cmd := NewIntCmd("getbit", key, offset) + c.process(cmd) + return cmd +} + +func (c *cmdable) GetRange(key string, start, end int64) *StringCmd { + cmd := NewStringCmd("getrange", key, start, end) + c.process(cmd) + return cmd +} + +func (c *cmdable) GetSet(key string, value interface{}) *StringCmd { + cmd := NewStringCmd("getset", key, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) Incr(key string) *IntCmd { + cmd := NewIntCmd("incr", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) IncrBy(key string, value int64) *IntCmd { + cmd := NewIntCmd("incrby", key, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) IncrByFloat(key string, value float64) *FloatCmd { + cmd := NewFloatCmd("incrbyfloat", key, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) MGet(keys ...string) *SliceCmd { + args := make([]interface{}, 1+len(keys)) + args[0] = "mget" + for i, key := range keys { + args[1+i] = key + } + cmd := NewSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) MSet(pairs ...interface{}) *StatusCmd { + args := make([]interface{}, 1, 1+len(pairs)) + args[0] = "mset" + args = appendArgs(args, pairs) + cmd := NewStatusCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) MSetNX(pairs ...interface{}) *BoolCmd { + args := make([]interface{}, 1, 1+len(pairs)) + args[0] = "msetnx" + args = appendArgs(args, pairs) + cmd := NewBoolCmd(args...) + c.process(cmd) + return cmd +} + +// Redis `SET key value [expiration]` command. +// +// Use expiration for `SETEX`-like behavior. +// Zero expiration means the key has no expiration time. +func (c *cmdable) Set(key string, value interface{}, expiration time.Duration) *StatusCmd { + args := make([]interface{}, 3, 4) + args[0] = "set" + args[1] = key + args[2] = value + if expiration > 0 { + if usePrecise(expiration) { + args = append(args, "px", formatMs(expiration)) + } else { + args = append(args, "ex", formatSec(expiration)) + } + } + cmd := NewStatusCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SetBit(key string, offset int64, value int) *IntCmd { + cmd := NewIntCmd( + "setbit", + key, + offset, + value, + ) + c.process(cmd) + return cmd +} + +// Redis `SET key value [expiration] NX` command. +// +// Zero expiration means the key has no expiration time. +func (c *cmdable) SetNX(key string, value interface{}, expiration time.Duration) *BoolCmd { + var cmd *BoolCmd + if expiration == 0 { + // Use old `SETNX` to support old Redis versions. + cmd = NewBoolCmd("setnx", key, value) + } else { + if usePrecise(expiration) { + cmd = NewBoolCmd("set", key, value, "px", formatMs(expiration), "nx") + } else { + cmd = NewBoolCmd("set", key, value, "ex", formatSec(expiration), "nx") + } + } + c.process(cmd) + return cmd +} + +// Redis `SET key value [expiration] XX` command. +// +// Zero expiration means the key has no expiration time. +func (c *cmdable) SetXX(key string, value interface{}, expiration time.Duration) *BoolCmd { + var cmd *BoolCmd + if expiration == 0 { + cmd = NewBoolCmd("set", key, value, "xx") + } else { + if usePrecise(expiration) { + cmd = NewBoolCmd("set", key, value, "px", formatMs(expiration), "xx") + } else { + cmd = NewBoolCmd("set", key, value, "ex", formatSec(expiration), "xx") + } + } + c.process(cmd) + return cmd +} + +func (c *cmdable) SetRange(key string, offset int64, value string) *IntCmd { + cmd := NewIntCmd("setrange", key, offset, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) StrLen(key string) *IntCmd { + cmd := NewIntCmd("strlen", key) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +func (c *cmdable) HDel(key string, fields ...string) *IntCmd { + args := make([]interface{}, 2+len(fields)) + args[0] = "hdel" + args[1] = key + for i, field := range fields { + args[2+i] = field + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) HExists(key, field string) *BoolCmd { + cmd := NewBoolCmd("hexists", key, field) + c.process(cmd) + return cmd +} + +func (c *cmdable) HGet(key, field string) *StringCmd { + cmd := NewStringCmd("hget", key, field) + c.process(cmd) + return cmd +} + +func (c *cmdable) HGetAll(key string) *StringStringMapCmd { + cmd := NewStringStringMapCmd("hgetall", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) HIncrBy(key, field string, incr int64) *IntCmd { + cmd := NewIntCmd("hincrby", key, field, incr) + c.process(cmd) + return cmd +} + +func (c *cmdable) HIncrByFloat(key, field string, incr float64) *FloatCmd { + cmd := NewFloatCmd("hincrbyfloat", key, field, incr) + c.process(cmd) + return cmd +} + +func (c *cmdable) HKeys(key string) *StringSliceCmd { + cmd := NewStringSliceCmd("hkeys", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) HLen(key string) *IntCmd { + cmd := NewIntCmd("hlen", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) HMGet(key string, fields ...string) *SliceCmd { + args := make([]interface{}, 2+len(fields)) + args[0] = "hmget" + args[1] = key + for i, field := range fields { + args[2+i] = field + } + cmd := NewSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) HMSet(key string, fields map[string]interface{}) *StatusCmd { + args := make([]interface{}, 2+len(fields)*2) + args[0] = "hmset" + args[1] = key + i := 2 + for k, v := range fields { + args[i] = k + args[i+1] = v + i += 2 + } + cmd := NewStatusCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) HSet(key, field string, value interface{}) *BoolCmd { + cmd := NewBoolCmd("hset", key, field, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) HSetNX(key, field string, value interface{}) *BoolCmd { + cmd := NewBoolCmd("hsetnx", key, field, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) HVals(key string) *StringSliceCmd { + cmd := NewStringSliceCmd("hvals", key) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +func (c *cmdable) BLPop(timeout time.Duration, keys ...string) *StringSliceCmd { + args := make([]interface{}, 1+len(keys)+1) + args[0] = "blpop" + for i, key := range keys { + args[1+i] = key + } + args[len(args)-1] = formatSec(timeout) + cmd := NewStringSliceCmd(args...) + cmd.setReadTimeout(timeout) + c.process(cmd) + return cmd +} + +func (c *cmdable) BRPop(timeout time.Duration, keys ...string) *StringSliceCmd { + args := make([]interface{}, 1+len(keys)+1) + args[0] = "brpop" + for i, key := range keys { + args[1+i] = key + } + args[len(keys)+1] = formatSec(timeout) + cmd := NewStringSliceCmd(args...) + cmd.setReadTimeout(timeout) + c.process(cmd) + return cmd +} + +func (c *cmdable) BRPopLPush(source, destination string, timeout time.Duration) *StringCmd { + cmd := NewStringCmd( + "brpoplpush", + source, + destination, + formatSec(timeout), + ) + cmd.setReadTimeout(timeout) + c.process(cmd) + return cmd +} + +func (c *cmdable) LIndex(key string, index int64) *StringCmd { + cmd := NewStringCmd("lindex", key, index) + c.process(cmd) + return cmd +} + +func (c *cmdable) LInsert(key, op string, pivot, value interface{}) *IntCmd { + cmd := NewIntCmd("linsert", key, op, pivot, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) LInsertBefore(key string, pivot, value interface{}) *IntCmd { + cmd := NewIntCmd("linsert", key, "before", pivot, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) LInsertAfter(key string, pivot, value interface{}) *IntCmd { + cmd := NewIntCmd("linsert", key, "after", pivot, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) LLen(key string) *IntCmd { + cmd := NewIntCmd("llen", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) LPop(key string) *StringCmd { + cmd := NewStringCmd("lpop", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) LPush(key string, values ...interface{}) *IntCmd { + args := make([]interface{}, 2, 2+len(values)) + args[0] = "lpush" + args[1] = key + args = appendArgs(args, values) + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) LPushX(key string, value interface{}) *IntCmd { + cmd := NewIntCmd("lpushx", key, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) LRange(key string, start, stop int64) *StringSliceCmd { + cmd := NewStringSliceCmd( + "lrange", + key, + start, + stop, + ) + c.process(cmd) + return cmd +} + +func (c *cmdable) LRem(key string, count int64, value interface{}) *IntCmd { + cmd := NewIntCmd("lrem", key, count, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) LSet(key string, index int64, value interface{}) *StatusCmd { + cmd := NewStatusCmd("lset", key, index, value) + c.process(cmd) + return cmd +} + +func (c *cmdable) LTrim(key string, start, stop int64) *StatusCmd { + cmd := NewStatusCmd( + "ltrim", + key, + start, + stop, + ) + c.process(cmd) + return cmd +} + +func (c *cmdable) RPop(key string) *StringCmd { + cmd := NewStringCmd("rpop", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) RPopLPush(source, destination string) *StringCmd { + cmd := NewStringCmd("rpoplpush", source, destination) + c.process(cmd) + return cmd +} + +func (c *cmdable) RPush(key string, values ...interface{}) *IntCmd { + args := make([]interface{}, 2, 2+len(values)) + args[0] = "rpush" + args[1] = key + args = appendArgs(args, values) + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) RPushX(key string, value interface{}) *IntCmd { + cmd := NewIntCmd("rpushx", key, value) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +func (c *cmdable) SAdd(key string, members ...interface{}) *IntCmd { + args := make([]interface{}, 2, 2+len(members)) + args[0] = "sadd" + args[1] = key + args = appendArgs(args, members) + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SCard(key string) *IntCmd { + cmd := NewIntCmd("scard", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) SDiff(keys ...string) *StringSliceCmd { + args := make([]interface{}, 1+len(keys)) + args[0] = "sdiff" + for i, key := range keys { + args[1+i] = key + } + cmd := NewStringSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SDiffStore(destination string, keys ...string) *IntCmd { + args := make([]interface{}, 2+len(keys)) + args[0] = "sdiffstore" + args[1] = destination + for i, key := range keys { + args[2+i] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SInter(keys ...string) *StringSliceCmd { + args := make([]interface{}, 1+len(keys)) + args[0] = "sinter" + for i, key := range keys { + args[1+i] = key + } + cmd := NewStringSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SInterStore(destination string, keys ...string) *IntCmd { + args := make([]interface{}, 2+len(keys)) + args[0] = "sinterstore" + args[1] = destination + for i, key := range keys { + args[2+i] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SIsMember(key string, member interface{}) *BoolCmd { + cmd := NewBoolCmd("sismember", key, member) + c.process(cmd) + return cmd +} + +// Redis `SMEMBERS key` command output as a slice +func (c *cmdable) SMembers(key string) *StringSliceCmd { + cmd := NewStringSliceCmd("smembers", key) + c.process(cmd) + return cmd +} + +// Redis `SMEMBERS key` command output as a map +func (c *cmdable) SMembersMap(key string) *StringStructMapCmd { + cmd := NewStringStructMapCmd("smembers", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) SMove(source, destination string, member interface{}) *BoolCmd { + cmd := NewBoolCmd("smove", source, destination, member) + c.process(cmd) + return cmd +} + +// Redis `SPOP key` command. +func (c *cmdable) SPop(key string) *StringCmd { + cmd := NewStringCmd("spop", key) + c.process(cmd) + return cmd +} + +// Redis `SPOP key count` command. +func (c *cmdable) SPopN(key string, count int64) *StringSliceCmd { + cmd := NewStringSliceCmd("spop", key, count) + c.process(cmd) + return cmd +} + +// Redis `SRANDMEMBER key` command. +func (c *cmdable) SRandMember(key string) *StringCmd { + cmd := NewStringCmd("srandmember", key) + c.process(cmd) + return cmd +} + +// Redis `SRANDMEMBER key count` command. +func (c *cmdable) SRandMemberN(key string, count int64) *StringSliceCmd { + cmd := NewStringSliceCmd("srandmember", key, count) + c.process(cmd) + return cmd +} + +func (c *cmdable) SRem(key string, members ...interface{}) *IntCmd { + args := make([]interface{}, 2, 2+len(members)) + args[0] = "srem" + args[1] = key + args = appendArgs(args, members) + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SUnion(keys ...string) *StringSliceCmd { + args := make([]interface{}, 1+len(keys)) + args[0] = "sunion" + for i, key := range keys { + args[1+i] = key + } + cmd := NewStringSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) SUnionStore(destination string, keys ...string) *IntCmd { + args := make([]interface{}, 2+len(keys)) + args[0] = "sunionstore" + args[1] = destination + for i, key := range keys { + args[2+i] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +type XAddArgs struct { + Stream string + MaxLen int64 // MAXLEN N + MaxLenApprox int64 // MAXLEN ~ N + ID string + Values map[string]interface{} +} + +func (c *cmdable) XAdd(a *XAddArgs) *StringCmd { + args := make([]interface{}, 0, 6+len(a.Values)*2) + args = append(args, "xadd") + args = append(args, a.Stream) + if a.MaxLen > 0 { + args = append(args, "maxlen", a.MaxLen) + } else if a.MaxLenApprox > 0 { + args = append(args, "maxlen", "~", a.MaxLenApprox) + } + if a.ID != "" { + args = append(args, a.ID) + } else { + args = append(args, "*") + } + for k, v := range a.Values { + args = append(args, k) + args = append(args, v) + } + + cmd := NewStringCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) XDel(stream string, ids ...string) *IntCmd { + args := []interface{}{"xdel", stream} + for _, id := range ids { + args = append(args, id) + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) XLen(stream string) *IntCmd { + cmd := NewIntCmd("xlen", stream) + c.process(cmd) + return cmd +} + +func (c *cmdable) XRange(stream, start, stop string) *XMessageSliceCmd { + cmd := NewXMessageSliceCmd("xrange", stream, start, stop) + c.process(cmd) + return cmd +} + +func (c *cmdable) XRangeN(stream, start, stop string, count int64) *XMessageSliceCmd { + cmd := NewXMessageSliceCmd("xrange", stream, start, stop, "count", count) + c.process(cmd) + return cmd +} + +func (c *cmdable) XRevRange(stream, start, stop string) *XMessageSliceCmd { + cmd := NewXMessageSliceCmd("xrevrange", stream, start, stop) + c.process(cmd) + return cmd +} + +func (c *cmdable) XRevRangeN(stream, start, stop string, count int64) *XMessageSliceCmd { + cmd := NewXMessageSliceCmd("xrevrange", stream, start, stop, "count", count) + c.process(cmd) + return cmd +} + +type XReadArgs struct { + Streams []string + Count int64 + Block time.Duration +} + +func (c *cmdable) XRead(a *XReadArgs) *XStreamSliceCmd { + args := make([]interface{}, 0, 5+len(a.Streams)) + args = append(args, "xread") + if a.Count > 0 { + args = append(args, "count") + args = append(args, a.Count) + } + if a.Block >= 0 { + args = append(args, "block") + args = append(args, int64(a.Block/time.Millisecond)) + } + args = append(args, "streams") + for _, s := range a.Streams { + args = append(args, s) + } + + cmd := NewXStreamSliceCmd(args...) + if a.Block >= 0 { + cmd.setReadTimeout(a.Block) + } + c.process(cmd) + return cmd +} + +func (c *cmdable) XReadStreams(streams ...string) *XStreamSliceCmd { + return c.XRead(&XReadArgs{ + Streams: streams, + Block: -1, + }) +} + +func (c *cmdable) XGroupCreate(stream, group, start string) *StatusCmd { + cmd := NewStatusCmd("xgroup", "create", stream, group, start) + c.process(cmd) + return cmd +} + +func (c *cmdable) XGroupCreateMkStream(stream, group, start string) *StatusCmd { + cmd := NewStatusCmd("xgroup", "create", stream, group, start, "mkstream") + c.process(cmd) + return cmd +} + +func (c *cmdable) XGroupSetID(stream, group, start string) *StatusCmd { + cmd := NewStatusCmd("xgroup", "setid", stream, group, start) + c.process(cmd) + return cmd +} + +func (c *cmdable) XGroupDestroy(stream, group string) *IntCmd { + cmd := NewIntCmd("xgroup", "destroy", stream, group) + c.process(cmd) + return cmd +} + +func (c *cmdable) XGroupDelConsumer(stream, group, consumer string) *IntCmd { + cmd := NewIntCmd("xgroup", "delconsumer", stream, group, consumer) + c.process(cmd) + return cmd +} + +type XReadGroupArgs struct { + Group string + Consumer string + // List of streams and ids. + Streams []string + Count int64 + Block time.Duration + NoAck bool +} + +func (c *cmdable) XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd { + args := make([]interface{}, 0, 8+len(a.Streams)) + args = append(args, "xreadgroup", "group", a.Group, a.Consumer) + if a.Count > 0 { + args = append(args, "count", a.Count) + } + if a.Block >= 0 { + args = append(args, "block", int64(a.Block/time.Millisecond)) + } + if a.NoAck { + args = append(args, "noack") + } + args = append(args, "streams") + for _, s := range a.Streams { + args = append(args, s) + } + + cmd := NewXStreamSliceCmd(args...) + if a.Block >= 0 { + cmd.setReadTimeout(a.Block) + } + c.process(cmd) + return cmd +} + +func (c *cmdable) XAck(stream, group string, ids ...string) *IntCmd { + args := []interface{}{"xack", stream, group} + for _, id := range ids { + args = append(args, id) + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) XPending(stream, group string) *XPendingCmd { + cmd := NewXPendingCmd("xpending", stream, group) + c.process(cmd) + return cmd +} + +type XPendingExtArgs struct { + Stream string + Group string + Start string + End string + Count int64 + Consumer string +} + +func (c *cmdable) XPendingExt(a *XPendingExtArgs) *XPendingExtCmd { + args := make([]interface{}, 0, 7) + args = append(args, "xpending", a.Stream, a.Group, a.Start, a.End, a.Count) + if a.Consumer != "" { + args = append(args, a.Consumer) + } + cmd := NewXPendingExtCmd(args...) + c.process(cmd) + return cmd +} + +type XClaimArgs struct { + Stream string + Group string + Consumer string + MinIdle time.Duration + Messages []string +} + +func (c *cmdable) XClaim(a *XClaimArgs) *XMessageSliceCmd { + args := xClaimArgs(a) + cmd := NewXMessageSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) XClaimJustID(a *XClaimArgs) *StringSliceCmd { + args := xClaimArgs(a) + args = append(args, "justid") + cmd := NewStringSliceCmd(args...) + c.process(cmd) + return cmd +} + +func xClaimArgs(a *XClaimArgs) []interface{} { + args := make([]interface{}, 0, 4+len(a.Messages)) + args = append(args, + "xclaim", + a.Stream, + a.Group, a.Consumer, + int64(a.MinIdle/time.Millisecond)) + for _, id := range a.Messages { + args = append(args, id) + } + return args +} + +func (c *cmdable) XTrim(key string, maxLen int64) *IntCmd { + cmd := NewIntCmd("xtrim", key, "maxlen", maxLen) + c.process(cmd) + return cmd +} + +func (c *cmdable) XTrimApprox(key string, maxLen int64) *IntCmd { + cmd := NewIntCmd("xtrim", key, "maxlen", "~", maxLen) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +// Z represents sorted set member. +type Z struct { + Score float64 + Member interface{} +} + +// ZWithKey represents sorted set member including the name of the key where it was popped. +type ZWithKey struct { + Z + Key string +} + +// ZStore is used as an arg to ZInterStore and ZUnionStore. +type ZStore struct { + Weights []float64 + // Can be SUM, MIN or MAX. + Aggregate string +} + +// Redis `BZPOPMAX key [key ...] timeout` command. +func (c *cmdable) BZPopMax(timeout time.Duration, keys ...string) *ZWithKeyCmd { + args := make([]interface{}, 1+len(keys)+1) + args[0] = "bzpopmax" + for i, key := range keys { + args[1+i] = key + } + args[len(args)-1] = formatSec(timeout) + cmd := NewZWithKeyCmd(args...) + cmd.setReadTimeout(timeout) + c.process(cmd) + return cmd +} + +// Redis `BZPOPMIN key [key ...] timeout` command. +func (c *cmdable) BZPopMin(timeout time.Duration, keys ...string) *ZWithKeyCmd { + args := make([]interface{}, 1+len(keys)+1) + args[0] = "bzpopmin" + for i, key := range keys { + args[1+i] = key + } + args[len(args)-1] = formatSec(timeout) + cmd := NewZWithKeyCmd(args...) + cmd.setReadTimeout(timeout) + c.process(cmd) + return cmd +} + +func (c *cmdable) zAdd(a []interface{}, n int, members ...Z) *IntCmd { + for i, m := range members { + a[n+2*i] = m.Score + a[n+2*i+1] = m.Member + } + cmd := NewIntCmd(a...) + c.process(cmd) + return cmd +} + +// Redis `ZADD key score member [score member ...]` command. +func (c *cmdable) ZAdd(key string, members ...Z) *IntCmd { + const n = 2 + a := make([]interface{}, n+2*len(members)) + a[0], a[1] = "zadd", key + return c.zAdd(a, n, members...) +} + +// Redis `ZADD key NX score member [score member ...]` command. +func (c *cmdable) ZAddNX(key string, members ...Z) *IntCmd { + const n = 3 + a := make([]interface{}, n+2*len(members)) + a[0], a[1], a[2] = "zadd", key, "nx" + return c.zAdd(a, n, members...) +} + +// Redis `ZADD key XX score member [score member ...]` command. +func (c *cmdable) ZAddXX(key string, members ...Z) *IntCmd { + const n = 3 + a := make([]interface{}, n+2*len(members)) + a[0], a[1], a[2] = "zadd", key, "xx" + return c.zAdd(a, n, members...) +} + +// Redis `ZADD key CH score member [score member ...]` command. +func (c *cmdable) ZAddCh(key string, members ...Z) *IntCmd { + const n = 3 + a := make([]interface{}, n+2*len(members)) + a[0], a[1], a[2] = "zadd", key, "ch" + return c.zAdd(a, n, members...) +} + +// Redis `ZADD key NX CH score member [score member ...]` command. +func (c *cmdable) ZAddNXCh(key string, members ...Z) *IntCmd { + const n = 4 + a := make([]interface{}, n+2*len(members)) + a[0], a[1], a[2], a[3] = "zadd", key, "nx", "ch" + return c.zAdd(a, n, members...) +} + +// Redis `ZADD key XX CH score member [score member ...]` command. +func (c *cmdable) ZAddXXCh(key string, members ...Z) *IntCmd { + const n = 4 + a := make([]interface{}, n+2*len(members)) + a[0], a[1], a[2], a[3] = "zadd", key, "xx", "ch" + return c.zAdd(a, n, members...) +} + +func (c *cmdable) zIncr(a []interface{}, n int, members ...Z) *FloatCmd { + for i, m := range members { + a[n+2*i] = m.Score + a[n+2*i+1] = m.Member + } + cmd := NewFloatCmd(a...) + c.process(cmd) + return cmd +} + +// Redis `ZADD key INCR score member` command. +func (c *cmdable) ZIncr(key string, member Z) *FloatCmd { + const n = 3 + a := make([]interface{}, n+2) + a[0], a[1], a[2] = "zadd", key, "incr" + return c.zIncr(a, n, member) +} + +// Redis `ZADD key NX INCR score member` command. +func (c *cmdable) ZIncrNX(key string, member Z) *FloatCmd { + const n = 4 + a := make([]interface{}, n+2) + a[0], a[1], a[2], a[3] = "zadd", key, "incr", "nx" + return c.zIncr(a, n, member) +} + +// Redis `ZADD key XX INCR score member` command. +func (c *cmdable) ZIncrXX(key string, member Z) *FloatCmd { + const n = 4 + a := make([]interface{}, n+2) + a[0], a[1], a[2], a[3] = "zadd", key, "incr", "xx" + return c.zIncr(a, n, member) +} + +func (c *cmdable) ZCard(key string) *IntCmd { + cmd := NewIntCmd("zcard", key) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZCount(key, min, max string) *IntCmd { + cmd := NewIntCmd("zcount", key, min, max) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZLexCount(key, min, max string) *IntCmd { + cmd := NewIntCmd("zlexcount", key, min, max) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZIncrBy(key string, increment float64, member string) *FloatCmd { + cmd := NewFloatCmd("zincrby", key, increment, member) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZInterStore(destination string, store ZStore, keys ...string) *IntCmd { + args := make([]interface{}, 3+len(keys)) + args[0] = "zinterstore" + args[1] = destination + args[2] = len(keys) + for i, key := range keys { + args[3+i] = key + } + if len(store.Weights) > 0 { + args = append(args, "weights") + for _, weight := range store.Weights { + args = append(args, weight) + } + } + if store.Aggregate != "" { + args = append(args, "aggregate", store.Aggregate) + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZPopMax(key string, count ...int64) *ZSliceCmd { + args := []interface{}{ + "zpopmax", + key, + } + + switch len(count) { + case 0: + break + case 1: + args = append(args, count[0]) + default: + panic("too many arguments") + } + + cmd := NewZSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZPopMin(key string, count ...int64) *ZSliceCmd { + args := []interface{}{ + "zpopmin", + key, + } + + switch len(count) { + case 0: + break + case 1: + args = append(args, count[0]) + default: + panic("too many arguments") + } + + cmd := NewZSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) zRange(key string, start, stop int64, withScores bool) *StringSliceCmd { + args := []interface{}{ + "zrange", + key, + start, + stop, + } + if withScores { + args = append(args, "withscores") + } + cmd := NewStringSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRange(key string, start, stop int64) *StringSliceCmd { + return c.zRange(key, start, stop, false) +} + +func (c *cmdable) ZRangeWithScores(key string, start, stop int64) *ZSliceCmd { + cmd := NewZSliceCmd("zrange", key, start, stop, "withscores") + c.process(cmd) + return cmd +} + +type ZRangeBy struct { + Min, Max string + Offset, Count int64 +} + +func (c *cmdable) zRangeBy(zcmd, key string, opt ZRangeBy, withScores bool) *StringSliceCmd { + args := []interface{}{zcmd, key, opt.Min, opt.Max} + if withScores { + args = append(args, "withscores") + } + if opt.Offset != 0 || opt.Count != 0 { + args = append( + args, + "limit", + opt.Offset, + opt.Count, + ) + } + cmd := NewStringSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRangeByScore(key string, opt ZRangeBy) *StringSliceCmd { + return c.zRangeBy("zrangebyscore", key, opt, false) +} + +func (c *cmdable) ZRangeByLex(key string, opt ZRangeBy) *StringSliceCmd { + return c.zRangeBy("zrangebylex", key, opt, false) +} + +func (c *cmdable) ZRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd { + args := []interface{}{"zrangebyscore", key, opt.Min, opt.Max, "withscores"} + if opt.Offset != 0 || opt.Count != 0 { + args = append( + args, + "limit", + opt.Offset, + opt.Count, + ) + } + cmd := NewZSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRank(key, member string) *IntCmd { + cmd := NewIntCmd("zrank", key, member) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRem(key string, members ...interface{}) *IntCmd { + args := make([]interface{}, 2, 2+len(members)) + args[0] = "zrem" + args[1] = key + args = appendArgs(args, members) + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRemRangeByRank(key string, start, stop int64) *IntCmd { + cmd := NewIntCmd( + "zremrangebyrank", + key, + start, + stop, + ) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRemRangeByScore(key, min, max string) *IntCmd { + cmd := NewIntCmd("zremrangebyscore", key, min, max) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRemRangeByLex(key, min, max string) *IntCmd { + cmd := NewIntCmd("zremrangebylex", key, min, max) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRevRange(key string, start, stop int64) *StringSliceCmd { + cmd := NewStringSliceCmd("zrevrange", key, start, stop) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRevRangeWithScores(key string, start, stop int64) *ZSliceCmd { + cmd := NewZSliceCmd("zrevrange", key, start, stop, "withscores") + c.process(cmd) + return cmd +} + +func (c *cmdable) zRevRangeBy(zcmd, key string, opt ZRangeBy) *StringSliceCmd { + args := []interface{}{zcmd, key, opt.Max, opt.Min} + if opt.Offset != 0 || opt.Count != 0 { + args = append( + args, + "limit", + opt.Offset, + opt.Count, + ) + } + cmd := NewStringSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRevRangeByScore(key string, opt ZRangeBy) *StringSliceCmd { + return c.zRevRangeBy("zrevrangebyscore", key, opt) +} + +func (c *cmdable) ZRevRangeByLex(key string, opt ZRangeBy) *StringSliceCmd { + return c.zRevRangeBy("zrevrangebylex", key, opt) +} + +func (c *cmdable) ZRevRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd { + args := []interface{}{"zrevrangebyscore", key, opt.Max, opt.Min, "withscores"} + if opt.Offset != 0 || opt.Count != 0 { + args = append( + args, + "limit", + opt.Offset, + opt.Count, + ) + } + cmd := NewZSliceCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZRevRank(key, member string) *IntCmd { + cmd := NewIntCmd("zrevrank", key, member) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZScore(key, member string) *FloatCmd { + cmd := NewFloatCmd("zscore", key, member) + c.process(cmd) + return cmd +} + +func (c *cmdable) ZUnionStore(dest string, store ZStore, keys ...string) *IntCmd { + args := make([]interface{}, 3+len(keys)) + args[0] = "zunionstore" + args[1] = dest + args[2] = len(keys) + for i, key := range keys { + args[3+i] = key + } + if len(store.Weights) > 0 { + args = append(args, "weights") + for _, weight := range store.Weights { + args = append(args, weight) + } + } + if store.Aggregate != "" { + args = append(args, "aggregate", store.Aggregate) + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +func (c *cmdable) PFAdd(key string, els ...interface{}) *IntCmd { + args := make([]interface{}, 2, 2+len(els)) + args[0] = "pfadd" + args[1] = key + args = appendArgs(args, els) + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) PFCount(keys ...string) *IntCmd { + args := make([]interface{}, 1+len(keys)) + args[0] = "pfcount" + for i, key := range keys { + args[1+i] = key + } + cmd := NewIntCmd(args...) + c.process(cmd) + return cmd +} + +func (c *cmdable) PFMerge(dest string, keys ...string) *StatusCmd { + args := make([]interface{}, 2+len(keys)) + args[0] = "pfmerge" + args[1] = dest + for i, key := range keys { + args[2+i] = key + } + cmd := NewStatusCmd(args...) + c.process(cmd) + return cmd +} + +//------------------------------------------------------------------------------ + +func (c *cmdable) BgRewriteAOF() *StatusCmd { + cmd := NewStatusCmd("bgrewriteaof") + c.process(cmd) + return cmd +} + +func (c *cmdable) BgSave() *StatusCmd { + cmd := NewStatusCmd("bgsave") + c.process(cmd) + return cmd +} + +func (c *cmdable) ClientKill(ipPort string) *StatusCmd { + cmd := NewStatusCmd("client", "kill", ipPort) + c.process(cmd) + return cmd +} + +// ClientKillByFilter is new style synx, while the ClientKill is old +// CLIENT KILL