// Choose a random server in the cluster to write to until a successful write
// occurs, logging each unsuccessful. If all servers fail, return error.
func (g *Graphite) Write(metrics []telegraf.Metric) error {
// Prepare data
var bp []string
s, err := serializers.NewGraphiteSerializer(g.Prefix, g.Template)
if err != nil {
return err
}
for _, metric := range metrics {
gMetrics, err := s.Serialize(metric)
if err != nil {
log.Printf("Error serializing some metrics to graphite: %s", err.Error())
}
bp = append(bp, gMetrics...)
}
graphitePoints := strings.Join(bp, "\n") + "\n"
// This will get set to nil if a successful write occurs
err = errors.New("Could not write to any Graphite server in cluster\n")
// Send data to a random server
p := rand.Perm(len(g.conns))
for _, n := range p {
if g.Timeout > 0 {
g.conns[n].SetWriteDeadline(time.Now().Add(time.Duration(g.Timeout) * time.Second))
}
if _, e := g.conns[n].Write([]byte(graphitePoints)); e != nil {
// Error
log.Println("ERROR: " + e.Error())
// Let's try the next one
} else {
// Success
err = nil
break
}
}
// try to reconnect
if err != nil {
g.Connect()
}
return err
}
func (i *Instrumental) Write(metrics []telegraf.Metric) error {
if i.conn == nil {
err := i.Connect()
if err != nil {
return fmt.Errorf("FAILED to (re)connect to Instrumental. Error: %s\n", err)
}
}
s, err := serializers.NewGraphiteSerializer(i.Prefix, i.Template)
if err != nil {
return err
}
var points []string
var metricType string
var toSerialize telegraf.Metric
var newTags map[string]string
for _, metric := range metrics {
// Pull the metric_type out of the metric's tags. We don't want the type
// to show up with the other tags pulled from the system, as they go in the
// beginning of the line instead.
// e.g we want:
//
// increment some_prefix.host.tag1.tag2.tag3.field value timestamp
//
// vs
//
// increment some_prefix.host.tag1.tag2.tag3.counter.field value timestamp
//
newTags = metric.Tags()
metricType = newTags["metric_type"]
delete(newTags, "metric_type")
toSerialize, _ = telegraf.NewMetric(
metric.Name(),
newTags,
metric.Fields(),
metric.Time(),
)
stats, err := s.Serialize(toSerialize)
if err != nil {
log.Printf("E! Error serializing a metric to Instrumental: %s", err)
}
switch metricType {
case "counter":
fallthrough
case "histogram":
metricType = "increment"
default:
metricType = "gauge"
}
for _, stat := range stats {
// decompose "metric.name value time"
splitStat := strings.SplitN(stat, " ", 3)
metric := splitStat[0]
value := splitStat[1]
time := splitStat[2]
// replace invalid components of metric name with underscore
clean_metric := MetricNameReplacer.ReplaceAllString(metric, "_")
if !ValueIncludesBadChar.MatchString(value) {
points = append(points, fmt.Sprintf("%s %s %s %s", metricType, clean_metric, value, time))
} else if i.Debug {
log.Printf("E! Instrumental unable to send bad stat: %s", stat)
}
}
}
allPoints := strings.Join(points, "\n") + "\n"
_, err = fmt.Fprintf(i.conn, allPoints)
log.Println("D! Instrumental: " + allPoints)
if err != nil {
if err == io.EOF {
i.Close()
}
return err
}
// force the connection closed after sending data
// to deal with various disconnection scenarios and eschew holding
// open idle connections en masse
i.Close()
return nil
}
func (i *Instrumental) Write(metrics []telegraf.Metric) error {
if i.conn == nil {
err := i.Connect()
if err != nil {
return fmt.Errorf("FAILED to (re)connect to Instrumental. Error: %s\n", err)
}
}
s, err := serializers.NewGraphiteSerializer(i.Prefix, i.Template)
if err != nil {
return err
}
var points []string
var metricType string
var toSerialize telegraf.Metric
var newTags map[string]string
for _, metric := range metrics {
// Pull the metric_type out of the metric's tags. We don't want the type
// to show up with the other tags pulled from the system, as they go in the
// beginning of the line instead.
// e.g we want:
//
// increment some_prefix.host.tag1.tag2.tag3.field value timestamp
//
// vs
//
// increment some_prefix.host.tag1.tag2.tag3.counter.field value timestamp
//
newTags = metric.Tags()
metricType = newTags["metric_type"]
delete(newTags, "metric_type")
toSerialize, _ = telegraf.NewMetric(
metric.Name(),
newTags,
metric.Fields(),
metric.Time(),
)
stats, err := s.Serialize(toSerialize)
if err != nil {
log.Printf("Error serializing a metric to Instrumental: %s", err)
}
switch metricType {
case "counter":
fallthrough
case "histogram":
metricType = "increment"
default:
metricType = "gauge"
}
for _, stat := range stats {
if !StatIncludesBadChar.MatchString(stat) {
points = append(points, fmt.Sprintf("%s %s", metricType, stat))
} else if i.Debug {
log.Printf("Unable to send bad stat: %s", stat)
}
}
}
allPoints := strings.Join(points, "\n") + "\n"
_, err = fmt.Fprintf(i.conn, allPoints)
if i.Debug {
log.Println(allPoints)
}
if err != nil {
if err == io.EOF {
i.Close()
}
return err
}
return nil
}
