Support multiple templates for graphite serializers (#7136)

plugins/outputs/graphite/graphite.go

@@ -18,11 +18,12 @@ import (
 type Graphite struct {
 	GraphiteTagSupport bool
 	// URL is only for backwards compatibility
-	Servers  []string
-	Prefix   string
-	Template string
-	Timeout  int
-	conns    []net.Conn
+	Servers   []string
+	Prefix    string
+	Template  string
+	Templates []string
+	Timeout   int
+	conns     []net.Conn
 	tlsint.ClientConfig
 }
 
@@ -40,6 +41,16 @@ var sampleConfig = `
   ## Enable Graphite tags support
   # graphite_tag_support = false
 
+  ## Graphite templates patterns
+  ## 1. Template for cpu
+  ## 2. Template for disk*
+  ## 3. Default template
+  # templates = [
+  #  "cpu tags.measurement.host.field",
+  #  "disk* measurement.field",
+  #  "host.measurement.tags.field"
+  #]
+
   ## timeout in seconds for the write connection to graphite
   timeout = 2
 
@@ -134,7 +145,7 @@ func checkEOF(conn net.Conn) {
 func (g *Graphite) Write(metrics []telegraf.Metric) error {
 	// Prepare data
 	var batch []byte
-	s, err := serializers.NewGraphiteSerializer(g.Prefix, g.Template, g.GraphiteTagSupport)
+	s, err := serializers.NewGraphiteSerializer(g.Prefix, g.Template, g.GraphiteTagSupport, g.Templates)
 	if err != nil {
 		return err
 	}