90 lines
1.9 KiB
Go
90 lines
1.9 KiB
Go
package graphite
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import (
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"fmt"
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"sort"
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"strings"
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"github.com/influxdata/telegraf"
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)
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type GraphiteSerializer struct {
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Prefix string
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}
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func (s *GraphiteSerializer) Serialize(metric telegraf.Metric) ([]string, error) {
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out := []string{}
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// Convert UnixNano to Unix timestamps
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timestamp := metric.UnixNano() / 1000000000
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for field_name, value := range metric.Fields() {
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// Convert value
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value_str := fmt.Sprintf("%#v", value)
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// Write graphite metric
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var graphitePoint string
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graphitePoint = fmt.Sprintf("%s %s %d",
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s.SerializeBucketName(metric, field_name),
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value_str,
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timestamp)
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out = append(out, graphitePoint)
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}
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return out, nil
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}
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func (s *GraphiteSerializer) SerializeBucketName(metric telegraf.Metric, field_name string) string {
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// Get the metric name
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name := metric.Name()
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// Convert UnixNano to Unix timestamps
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tag_str := buildTags(metric)
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// Write graphite metric
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var serializedBucketName string
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if name == field_name {
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serializedBucketName = fmt.Sprintf("%s.%s",
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tag_str,
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strings.Replace(name, ".", "_", -1))
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} else {
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serializedBucketName = fmt.Sprintf("%s.%s.%s",
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tag_str,
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strings.Replace(name, ".", "_", -1),
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strings.Replace(field_name, ".", "_", -1))
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}
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if s.Prefix != "" {
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serializedBucketName = fmt.Sprintf("%s.%s", s.Prefix, serializedBucketName)
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}
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return serializedBucketName
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}
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func buildTags(metric telegraf.Metric) string {
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var keys []string
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tags := metric.Tags()
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for k := range tags {
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if k == "host" {
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continue
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}
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keys = append(keys, k)
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}
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sort.Strings(keys)
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var tag_str string
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if host, ok := tags["host"]; ok {
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if len(keys) > 0 {
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tag_str = strings.Replace(host, ".", "_", -1) + "."
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} else {
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tag_str = strings.Replace(host, ".", "_", -1)
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}
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}
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for i, k := range keys {
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tag_value := strings.Replace(tags[k], ".", "_", -1)
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if i == 0 {
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tag_str += tag_value
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} else {
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tag_str += "." + tag_value
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}
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}
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return tag_str
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}
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