Add ability to exclude db/bucket tag from influxdb outputs

plugins/outputs/influxdb/README.md

@@ -23,6 +23,9 @@ The InfluxDB output plugin writes metrics to the [InfluxDB v1.x] HTTP or UDP ser
   ## tag is not set the 'database' option is used as the default.
   # database_tag = ""
 
+  ## If true, the database tag will not be added to the metric.
+  # exclude_database_tag = false
+
   ## If true, no CREATE DATABASE queries will be sent.  Set to true when using
   ## Telegraf with a user without permissions to create databases or when the
   ## database already exists.

plugins/outputs/influxdb/http.go

@@ -94,6 +94,7 @@ type HTTPConfig struct {
 	ContentEncoding      string
 	Database             string
 	DatabaseTag          string
+	ExcludeDatabaseTag   bool
 	RetentionPolicy      string
 	Consistency          string
 	SkipDatabaseCreation bool
@@ -250,6 +251,10 @@ func (c *httpClient) Write(ctx context.Context, metrics []telegraf.Metric) error
 				batches[db] = make([]telegraf.Metric, 0)
 			}
 
+			if c.config.ExcludeDatabaseTag {
+				metric.RemoveTag(c.config.DatabaseTag)
+			}
+
 			batches[db] = append(batches[db], metric)
 		}
 

plugins/outputs/influxdb/influxdb.go

@@ -38,6 +38,7 @@ type InfluxDB struct {
 	Password             string
 	Database             string
 	DatabaseTag          string `toml:"database_tag"`
+	ExcludeDatabaseTag   bool   `toml:"exclude_database_tag"`
 	UserAgent            string
 	RetentionPolicy      string
 	WriteConsistency     string
@@ -77,6 +78,9 @@ var sampleConfig = `
   ## tag is not set the 'database' option is used as the default.
   # database_tag = ""
 
+  ## If true, the database tag will not be added to the metric.
+  # exclude_database_tag = false
+
   ## If true, no CREATE DATABASE queries will be sent.  Set to true when using
   ## Telegraf with a user without permissions to create databases or when the
   ## database already exists.
@@ -262,6 +266,7 @@ func (i *InfluxDB) httpClient(ctx context.Context, url *url.URL, proxy *url.URL)
 		Headers:              i.HTTPHeaders,
 		Database:             i.Database,
 		DatabaseTag:          i.DatabaseTag,
+		ExcludeDatabaseTag:   i.ExcludeDatabaseTag,
 		SkipDatabaseCreation: i.SkipDatabaseCreation,
 		RetentionPolicy:      i.RetentionPolicy,
 		Consistency:          i.WriteConsistency,

plugins/outputs/influxdb_v2/README.md

@@ -26,6 +26,9 @@ The InfluxDB output plugin writes metrics to the [InfluxDB v2.x] HTTP service.
   ## tag is not set the 'bucket' option is used as the default.
   # bucket_tag = ""
 
+  ## If true, the bucket tag will not be added to the metric.
+  # exclude_bucket_tag = false
+
   ## Timeout for HTTP messages.
   # timeout = "5s"
 

plugins/outputs/influxdb_v2/http.go

@@ -40,28 +40,30 @@ const (
 )
 
 type HTTPConfig struct {
-	URL             *url.URL
-	Token           string
-	Organization    string
-	Bucket          string
-	BucketTag       string
-	Timeout         time.Duration
-	Headers         map[string]string
-	Proxy           *url.URL
-	UserAgent       string
-	ContentEncoding string
-	TLSConfig       *tls.Config
+	URL              *url.URL
+	Token            string
+	Organization     string
+	Bucket           string
+	BucketTag        string
+	ExcludeBucketTag bool
+	Timeout          time.Duration
+	Headers          map[string]string
+	Proxy            *url.URL
+	UserAgent        string
+	ContentEncoding  string
+	TLSConfig        *tls.Config
 
 	Serializer *influx.Serializer
 }
 
 type httpClient struct {
-	ContentEncoding string
-	Timeout         time.Duration
-	Headers         map[string]string
-	Organization    string
-	Bucket          string
-	BucketTag       string
+	ContentEncoding  string
+	Timeout          time.Duration
+	Headers          map[string]string
+	Organization     string
+	Bucket           string
+	BucketTag        string
+	ExcludeBucketTag bool
 
 	client     *http.Client
 	serializer *influx.Serializer
@@ -130,13 +132,14 @@ func NewHTTPClient(config *HTTPConfig) (*httpClient, error) {
 			Timeout:   timeout,
 			Transport: transport,
 		},
-		url:             config.URL,
-		ContentEncoding: config.ContentEncoding,
-		Timeout:         timeout,
-		Headers:         headers,
-		Organization:    config.Organization,
-		Bucket:          config.Bucket,
-		BucketTag:       config.BucketTag,
+		url:              config.URL,
+		ContentEncoding:  config.ContentEncoding,
+		Timeout:          timeout,
+		Headers:          headers,
+		Organization:     config.Organization,
+		Bucket:           config.Bucket,
+		BucketTag:        config.BucketTag,
+		ExcludeBucketTag: config.ExcludeBucketTag,
 	}
 	return client, nil
 }
@@ -185,6 +188,10 @@ func (c *httpClient) Write(ctx context.Context, metrics []telegraf.Metric) error
 				batches[bucket] = make([]telegraf.Metric, 0)
 			}
 
+			if c.ExcludeBucketTag {
+				metric.RemoveTag(c.BucketTag)
+			}
+
 			batches[bucket] = append(batches[bucket], metric)
 		}
 

plugins/outputs/influxdb_v2/influxdb.go

@@ -42,6 +42,9 @@ var sampleConfig = `
   ## tag is not set the 'bucket' option is used as the default.
   # bucket_tag = ""
 
+  ## If true, the bucket tag will not be added to the metric.
+  # exclude_bucket_tag = false
+
   ## Timeout for HTTP messages.
   # timeout = "5s"
 
@@ -78,17 +81,18 @@ type Client interface {
 }
 
 type InfluxDB struct {
-	URLs            []string          `toml:"urls"`
-	Token           string            `toml:"token"`
-	Organization    string            `toml:"organization"`
-	Bucket          string            `toml:"bucket"`
-	BucketTag       string            `toml:"bucket_tag"`
-	Timeout         internal.Duration `toml:"timeout"`
-	HTTPHeaders     map[string]string `toml:"http_headers"`
-	HTTPProxy       string            `toml:"http_proxy"`
-	UserAgent       string            `toml:"user_agent"`
-	ContentEncoding string            `toml:"content_encoding"`
-	UintSupport     bool              `toml:"influx_uint_support"`
+	URLs             []string          `toml:"urls"`
+	Token            string            `toml:"token"`
+	Organization     string            `toml:"organization"`
+	Bucket           string            `toml:"bucket"`
+	BucketTag        string            `toml:"bucket_tag"`
+	ExcludeBucketTag bool              `toml:"exclude_bucket_tag"`
+	Timeout          internal.Duration `toml:"timeout"`
+	HTTPHeaders      map[string]string `toml:"http_headers"`
+	HTTPProxy        string            `toml:"http_proxy"`
+	UserAgent        string            `toml:"user_agent"`
+	ContentEncoding  string            `toml:"content_encoding"`
+	UintSupport      bool              `toml:"influx_uint_support"`
 	tls.ClientConfig
 
 	clients    []Client
@@ -179,18 +183,19 @@ func (i *InfluxDB) getHTTPClient(ctx context.Context, url *url.URL, proxy *url.U
 	}
 
 	config := &HTTPConfig{
-		URL:             url,
-		Token:           i.Token,
-		Organization:    i.Organization,
-		Bucket:          i.Bucket,
-		BucketTag:       i.BucketTag,
-		Timeout:         i.Timeout.Duration,
-		Headers:         i.HTTPHeaders,
-		Proxy:           proxy,
-		UserAgent:       i.UserAgent,
-		ContentEncoding: i.ContentEncoding,
-		TLSConfig:       tlsConfig,
-		Serializer:      i.serializer,
+		URL:              url,
+		Token:            i.Token,
+		Organization:     i.Organization,
+		Bucket:           i.Bucket,
+		BucketTag:        i.BucketTag,
+		ExcludeBucketTag: i.ExcludeBucketTag,
+		Timeout:          i.Timeout.Duration,
+		Headers:          i.HTTPHeaders,
+		Proxy:            proxy,
+		UserAgent:        i.UserAgent,
+		ContentEncoding:  i.ContentEncoding,
+		TLSConfig:        tlsConfig,
+		Serializer:       i.serializer,
 	}
 
 	c, err := NewHTTPClient(config)