[query] Adding complete tags to remote server with integration test

Makefile

@@ -227,6 +227,7 @@ docker-integration-test:
 	@./scripts/docker-integration-tests/prometheus/test.sh
 	@./scripts/docker-integration-tests/carbon/test.sh
 	@./scripts/docker-integration-tests/aggregator/test.sh
+	@./scripts/docker-integration-tests/query_fanout/test.sh
 
 .PHONY: site-build
 site-build:

scripts/docker-integration-tests/query_fanout/test.sh

@@ -74,7 +74,6 @@ curl -vvvsS -X POST 0.0.0.0:19003/writetagged -d '{
   }
 }'
 
-
 function read {
   RESPONSE=$(curl "http://0.0.0.0:7201/api/v1/query?query=test_metric")
   ACTUAL=$(echo $RESPONSE | jq .data.result[].metric.cluster)
@@ -90,3 +89,67 @@ function read_sum {
 }
 
 ATTEMPTS=5 TIMEOUT=1 retry_with_backoff read_sum
+
+echo "Write local tagged data to cluster a"
+curl -vvvsS -X POST 0.0.0.0:19003/writetagged -d '{
+  "namespace": "unagg",
+  "id": "{__name__=\"test_metric\",cluster=\"cluster-b\",endpoint=\"/request\",local-only=\"local\"}",
+  "tags": [
+    {
+      "name": "__name__",
+      "value": "test_metric"
+    },
+    {
+      "name": "cluster",
+      "value": "cluster-b"
+    },
+    {
+      "name": "endpoint",
+      "value": "/request"
+    },
+    {
+      "name": "local-only",
+      "value": "local"
+    }
+  ],
+  "datapoint": {
+    "timestamp":'"$(date +"%s")"',
+    "value": 42.123456789
+  }
+}'
+
+echo "Write remote tagged data to cluster b"
+curl -vvvsS -X POST 0.0.0.0:19003/writetagged -d '{
+  "namespace": "unagg",
+  "id": "{__name__=\"test_metric\",cluster=\"cluster-b\",endpoint=\"/request\",remote-only=\"remote\"}",
+  "tags": [
+    {
+      "name": "__name__",
+      "value": "test_metric"
+    },
+    {
+      "name": "cluster",
+      "value": "cluster-b"
+    },
+    {
+      "name": "endpoint",
+      "value": "/request"
+    },
+    {
+      "name": "remote-only",
+      "value": "remote"
+    }
+  ],
+  "datapoint": {
+    "timestamp":'"$(date +"%s")"',
+    "value": 42.123456789
+  }
+}'
+
+function complete_tags {
+  RESPONSE=$(curl "http://0.0.0.0:7201/api/v1/labels")
+  ACTUAL=$(echo $RESPONSE | jq .data[])
+  test "$(echo $ACTUAL)" = '"__name__" "cluster" "endpoint" "local-only" "remote-only"'
+}
+
+ATTEMPTS=5 TIMEOUT=1 retry_with_backoff complete_tags

src/query/generated/proto/rpcpb/query.proto

@@ -135,6 +135,8 @@ enum CompleteTagsType {
 message CompleteTagsRequestOptions {
 	CompleteTagsType type         = 1;
 	repeated bytes filterNameTags = 2;
+	int64 start                   = 3;
+	int64 end                     = 4;
 }
 
 message CompleteTagsRequest {

src/query/server/server.go

@@ -116,6 +116,10 @@ type RunOptions struct {
 	// InterruptCh is a programmatic interrupt channel to supply to
 	// interrupt and shutdown the server.
 	InterruptCh <-chan error
+
+	// ListenerCh is a programmatic channel to receive the server listener
+	// on once it has opened.
+	ListenerCh chan<- net.Listener
 }
 
 // Run runs the server programmatically given a filename for the configuration file.
@@ -280,11 +284,21 @@ func Run(runOpts RunOptions) {
 		}
 	}()
 
+	listener, err := net.Listen("tcp", listenAddress)
+	if err != nil {
+		logger.Fatal("unable to listen on listen address",
+			zap.String("address", listenAddress),
+			zap.Error(err))
+	}
+	if runOpts.ListenerCh != nil {
+		runOpts.ListenerCh <- listener
+	}
 	go func() {
 		logger.Info("starting API server", zap.String("address", listenAddress))
-		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
-			logger.Fatal("server error while listening",
-				zap.String("address", listenAddress), zap.Error(err))
+		if err := srv.Serve(listener); err != nil && err != http.ErrServerClosed {
+			logger.Fatal("server serve error",
+				zap.String("address", listenAddress),
+				zap.Error(err))
 		}
 	}()
 

src/query/server/server_test.go

@@ -48,19 +48,17 @@ import (
 	"google.golang.org/grpc"
 )
 
-var queryPort = 25123
-
 var configYAML = `
 listenAddress:
   type: "config"
-  value: "127.0.0.1:25123"
+  value: "127.0.0.1:0"
 
 metrics:
   scope:
     prefix: "coordinator"
   prometheus:
     handlerPath: /metrics
-    listenAddress: "127.0.0.1:18202"
+    listenAddress: "127.0.0.1:0"
   sanitization: prometheus
   samplingRate: 1.0
 
@@ -88,7 +86,6 @@ writeWorkerPoolPolicy:
 
 `
 
-//TODO: Use randomly assigned port here
 func TestRun(t *testing.T) {
 	ctrl := gomock.NewController(xtest.Reporter{T: t})
 	defer ctrl.Finish()
@@ -136,24 +133,30 @@ func TestRun(t *testing.T) {
 			return dbClient, nil
 		})
 
-	interruptCh := make(chan error)
-	doneCh := make(chan struct{})
+	interruptCh := make(chan error, 1)
+	doneCh := make(chan struct{}, 1)
+	listenerCh := make(chan net.Listener, 1)
 	go func() {
 		Run(RunOptions{
 			Config:      cfg,
 			InterruptCh: interruptCh,
+			ListenerCh:  listenerCh,
 		})
 		doneCh <- struct{}{}
 	}()
 
+	// Wait for listener
+	listener := <-listenerCh
+	addr := listener.Addr().String()
+
 	// Wait for server to come up
-	waitForServerHealthy(t, queryPort)
+	waitForServerHealthy(t, addr)
 
 	// Send Prometheus write request
 	promReq := test.GeneratePromWriteRequest()
 	promReqBody := test.GeneratePromWriteRequestBody(t, promReq)
 	req, err := http.NewRequest(http.MethodPost,
-		fmt.Sprintf("http://127.0.0.1:%d", queryPort)+remote.PromWriteURL, promReqBody)
+		fmt.Sprintf("http://%s%s", addr, remote.PromWriteURL), promReqBody)
 	require.NoError(t, err)
 
 	res, err := http.DefaultClient.Do(req)
@@ -179,11 +182,11 @@ func newTestFile(t *testing.T, fileName, contents string) (*os.File, closeFn) {
 	}
 }
 
-func waitForServerHealthy(t *testing.T, port int) {
+func waitForServerHealthy(t *testing.T, addr string) {
 	maxWait := 10 * time.Second
 	startAt := time.Now()
 	for time.Since(startAt) < maxWait {
-		req, err := http.NewRequest("GET", fmt.Sprintf("http://127.0.0.1:%d/health", port), nil)
+		req, err := http.NewRequest("GET", fmt.Sprintf("http://%s/health", addr), nil)
 		require.NoError(t, err)
 		res, err := http.DefaultClient.Do(req)
 		if err != nil || res.StatusCode != http.StatusOK {
@@ -232,24 +235,26 @@ func (s *queryServer) CompleteTags(
 }
 
 func TestGRPCBackend(t *testing.T) {
-	var grpcConfigYAML = `
+	lis, err := net.Listen("tcp", "127.0.0.1:0")
+	require.NoError(t, err)
+	grpcAddr := lis.Addr().String()
+	var grpcConfigYAML = fmt.Sprintf(`
 listenAddress:
   type: "config"
-  value: "127.0.0.1:17221"
+  value: "127.0.0.1:0"
 
 metrics:
   scope:
     prefix: "coordinator"
   prometheus:
     handlerPath: /metrics
-    listenAddress: "127.0.0.1:17223"
+    listenAddress: "127.0.0.1:0"
     onError: stderr
   sanitization: prometheus
   samplingRate: 1.0
 
 rpc:
-  remoteListenAddresses:
-    - "127.0.0.1:17222"
+  remoteListenAddresses: ["%s"]
 
 backend: grpc
 
@@ -268,17 +273,11 @@ writeWorkerPoolPolicy:
   size: 100
   shards: 1000
   killProbability: 0.3
-`
-
-	// TODO(arnikola): REVERT
-	t.SkipNow()
+`, grpcAddr)
 
 	ctrl := gomock.NewController(xtest.Reporter{T: t})
 	defer ctrl.Finish()
 
-	port := "127.0.0.1:17222"
-	lis, err := net.Listen("tcp", port)
-	require.NoError(t, err)
 	s := grpc.NewServer()
 	defer s.GracefulStop()
 	qs := &queryServer{}
@@ -300,22 +299,28 @@ writeWorkerPoolPolicy:
 
 	interruptCh := make(chan error)
 	doneCh := make(chan struct{})
+	listenerCh := make(chan net.Listener, 1)
 	go func() {
 		Run(RunOptions{
 			Config:      cfg,
 			InterruptCh: interruptCh,
+			ListenerCh:  listenerCh,
 		})
 		doneCh <- struct{}{}
 	}()
 
+	// Wait for listener
+	listener := <-listenerCh
+	addr := listener.Addr().String()
+
 	// Wait for server to come up
-	waitForServerHealthy(t, 17221)
+	waitForServerHealthy(t, addr)
 
 	// Send Prometheus read request
 	promReq := test.GeneratePromReadRequest()
 	promReqBody := test.GeneratePromReadRequestBody(t, promReq)
 	req, err := http.NewRequest(http.MethodPost,
-		"http://127.0.0.1:17221"+remote.PromReadURL, promReqBody)
+		fmt.Sprintf("http://%s%s", addr, remote.PromReadURL), promReqBody)
 	require.NoError(t, err)
 
 	_, err = http.DefaultClient.Do(req)

src/query/storage/fanout/storage.go

@@ -175,8 +175,13 @@ func (s *fanoutStorage) CompleteTags(
 	query *storage.CompleteTagsQuery,
 	options *storage.FetchOptions,
 ) (*storage.CompleteTagsResult, error) {
-	accumulatedTags := storage.NewCompleteTagsResultBuilder(query.CompleteNameOnly)
 	stores := filterCompleteTagsStores(s.stores, s.completeTagsFilter, *query)
+	// short circuit complete tags
+	if len(stores) == 1 {
+		return stores[0].CompleteTags(ctx, query, options)
+	}
+
+	accumulatedTags := storage.NewCompleteTagsResultBuilder(query.CompleteNameOnly)
 	for _, store := range stores {
 		result, err := store.CompleteTags(ctx, query, options)
 		if err != nil {

src/query/tsdb/remote/codecs_complete_tags.go

@@ -93,6 +93,80 @@ func encodeCompleteTagsRequest(
 		Options: &rpc.CompleteTagsRequestOptions{
 			Type:           completionType,
 			FilterNameTags: query.FilterNameTags,
+			Start:          fromTime(query.Start),
+			End:            fromTime(query.End),
 		},
 	}, nil
 }
+
+func decodeCompleteTagsRequest(
+	request *rpc.CompleteTagsRequest,
+) (*storage.CompleteTagsQuery, error) {
+	var (
+		opts     = request.GetOptions()
+		matchers = request.GetTagMatchers()
+	)
+
+	completeNameOnly := opts.GetType() == rpc.CompleteTagsType_TAGNAME
+	tagMatchers, err := decodeTagMatchers(matchers)
+	if err != nil {
+		return nil, err
+	}
+
+	return &storage.CompleteTagsQuery{
+		CompleteNameOnly: completeNameOnly,
+		FilterNameTags:   opts.GetFilterNameTags(),
+		TagMatchers:      tagMatchers,
+		Start:            toTime(opts.GetStart()),
+		End:              toTime(opts.GetEnd()),
+	}, nil
+}
+
+func encodeToCompressedCompleteTagsDefaultResult(
+	results *storage.CompleteTagsResult,
+) (*rpc.CompleteTagsResponse, error) {
+	tags := results.CompletedTags
+	values := make([]*rpc.TagValue, 0, len(tags))
+	for _, tag := range tags {
+		values = append(values, &rpc.TagValue{
+			Key:    tag.Name,
+			Values: tag.Values,
+		})
+	}
+
+	return &rpc.CompleteTagsResponse{
+		Value: &rpc.CompleteTagsResponse_Default{
+			Default: &rpc.TagValues{
+				Values: values,
+			},
+		},
+	}, nil
+}
+
+func encodeToCompressedCompleteTagsNameOnlyResult(
+	results *storage.CompleteTagsResult,
+) (*rpc.CompleteTagsResponse, error) {
+	tags := results.CompletedTags
+	names := make([][]byte, 0, len(tags))
+	for _, tag := range tags {
+		names = append(names, tag.Name)
+	}
+
+	return &rpc.CompleteTagsResponse{
+		Value: &rpc.CompleteTagsResponse_NamesOnly{
+			NamesOnly: &rpc.TagNames{
+				Names: names,
+			},
+		},
+	}, nil
+}
+
+func encodeToCompressedCompleteTagsResult(
+	results *storage.CompleteTagsResult,
+) (*rpc.CompleteTagsResponse, error) {
+	if results.CompleteNameOnly {
+		return encodeToCompressedCompleteTagsNameOnlyResult(results)
+	}
+
+	return encodeToCompressedCompleteTagsDefaultResult(results)
+}