Use not a pointer to line-protocol.Encoder

sinks/httpSink.go

@@ -16,7 +16,7 @@ import (
 
 type HttpSinkConfig struct {
 	defaultSinkConfig
-	URL             string `json:"url,omitempty"`
+	URL             string `json:"url"`
 	JWT             string `json:"jwt,omitempty"`
 	Timeout         string `json:"timeout,omitempty"`
 	IdleConnTimeout string `json:"idle_connection_timeout,omitempty"`
@@ -26,10 +26,10 @@ type HttpSinkConfig struct {
 
 type HttpSink struct {
 	sink
-	client          *http.Client
-	encoder         *influx.Encoder
-	lock            sync.Mutex // Flush() runs in another goroutine, so this lock has to protect the buffer
-	buffer          *bytes.Buffer
+	client  *http.Client
+	encoder influx.Encoder
+	lock    sync.Mutex // Flush() runs in another goroutine, so this lock has to protect the buffer
+	//buffer          *bytes.Buffer
 	flushTimer      *time.Timer
 	config          HttpSinkConfig
 	idleConnTimeout time.Duration
@@ -38,20 +38,29 @@ type HttpSink struct {
 }
 
 func (s *HttpSink) Write(m lp.CCMetric) error {
+	var err error = nil
+	var firstWriteOfBatch bool = false
 	p := m.ToPoint(s.meta_as_tags)
 	s.lock.Lock()
-	firstWriteOfBatch := s.buffer.Len() == 0
-	s.encoder.StartLine(p.Name())
-	for _, v := range p.TagList() {
-		s.encoder.AddTag(v.Key, v.Value)
+	firstWriteOfBatch = len(s.encoder.Bytes()) == 0
+	v, ok := m.GetField("value")
+	if ok {
+
+		s.encoder.StartLine(p.Name())
+		for _, v := range p.TagList() {
+			s.encoder.AddTag(v.Key, v.Value)
+		}
+
+		s.encoder.AddField("value", influx.MustNewValue(v))
+		s.encoder.EndLine(p.Time())
+		err = s.encoder.Err()
+		if err != nil {
+			cclog.ComponentError(s.name, "encoding failed:", err.Error())
+			s.lock.Unlock()
+			return err
+		}
 	}
-	s.encoder.EndLine(p.Time())
-	err := s.encoder.Err()
 	s.lock.Unlock()
-	if err != nil {
-		cclog.ComponentError(s.name, "encoding failed:", err.Error())
-		return err
-	}
 
 	if s.flushDelay == 0 {
 		return s.Flush()
@@ -75,9 +84,9 @@ func (s *HttpSink) Write(m lp.CCMetric) error {
 func (s *HttpSink) Flush() error {
 	// Own lock for as short as possible: the time it takes to copy the buffer.
 	s.lock.Lock()
-	buf := make([]byte, s.buffer.Len())
-	copy(buf, s.buffer.Bytes())
-	s.buffer.Reset()
+	buf := make([]byte, len(s.encoder.Bytes()))
+	copy(buf, s.encoder.Bytes())
+	s.encoder.Reset()
 	s.lock.Unlock()
 	if len(buf) == 0 {
 		return nil
@@ -139,6 +148,7 @@ func NewHttpSink(name string, config json.RawMessage) (Sink, error) {
 	s.config.Timeout = "5s"
 	s.config.FlushDelay = "5s"
 	s.config.MaxRetries = 3
+	cclog.ComponentDebug(s.name, "init")
 
 	// Read config
 	if len(config) > 0 {
@@ -153,6 +163,7 @@ func NewHttpSink(name string, config json.RawMessage) (Sink, error) {
 	if len(s.config.IdleConnTimeout) > 0 {
 		t, err := time.ParseDuration(s.config.IdleConnTimeout)
 		if err == nil {
+			cclog.ComponentDebug(s.name, "idleConnTimeout", t)
 			s.idleConnTimeout = t
 		}
 	}
@@ -160,12 +171,14 @@ func NewHttpSink(name string, config json.RawMessage) (Sink, error) {
 		t, err := time.ParseDuration(s.config.Timeout)
 		if err == nil {
 			s.timeout = t
+			cclog.ComponentDebug(s.name, "timeout", t)
 		}
 	}
 	if len(s.config.FlushDelay) > 0 {
 		t, err := time.ParseDuration(s.config.FlushDelay)
 		if err == nil {
 			s.flushDelay = t
+			cclog.ComponentDebug(s.name, "flushDelay", t)
 		}
 	}
 	// Create lookup map to use meta infos as tags in the output metric
@@ -178,8 +191,6 @@ func NewHttpSink(name string, config json.RawMessage) (Sink, error) {
 		IdleConnTimeout: s.idleConnTimeout,
 	}
 	s.client = &http.Client{Transport: tr, Timeout: s.timeout}
-	s.buffer = &bytes.Buffer{}
 	s.encoder.SetPrecision(influx.Second)
-	s.encoder.SetBuffer(s.buffer.Bytes())
 	return s, nil
 }