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Implement telegraf metric types

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And use them in the prometheus output plugin.

Still need to test the prometheus output plugin.

Also need to actually create typed metrics in the system plugins.

closes #1683
This commit is contained in:
Cameron Sparr
2016-08-30 18:09:48 +01:00
parent 0f6d317a8e
commit 03d8abccdd
3 changed files with 122 additions and 7 deletions
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18
plugins/outputs/prometheus_client/prometheus_client.go
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@@ -102,6 +102,7 @@ func (p *PrometheusClient) Write(metrics []telegraf.Metric) error {
key := point.Name()
key = invalidNameCharRE.ReplaceAllString(key, "_")
// convert tags into prometheus labels
var labels []string
l := prometheus.Labels{}
for k, v := range point.Tags() {
@@ -113,6 +114,17 @@ func (p *PrometheusClient) Write(metrics []telegraf.Metric) error {
l[k] = v
}
// Get a type if it's available, defaulting to Untyped
var mType prometheus.ValueType
switch point.Type() {
case telegraf.Counter:
mType = prometheus.CounterValue
case telegraf.Gauge:
mType = prometheus.GaugeValue
default:
mType = prometheus.UntypedValue
}
for n, val := range point.Fields() {
// Ignore string and bool fields.
switch val.(type) {
@@ -134,11 +146,13 @@ func (p *PrometheusClient) Write(metrics []telegraf.Metric) error {
desc := prometheus.NewDesc(mname, "Telegraf collected metric", nil, l)
var metric prometheus.Metric
var err error
// switch for field type
switch val := val.(type) {
case int64:
metric, err = prometheus.NewConstMetric(desc, prometheus.UntypedValue, float64(val))
metric, err = prometheus.NewConstMetric(desc, mType, float64(val))
case float64:
metric, err = prometheus.NewConstMetric(desc, prometheus.UntypedValue, val)
metric, err = prometheus.NewConstMetric(desc, mType, val)
default:
continue
}