mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-30 07:59:40 -08:00
110 lines
3 KiB
Go
110 lines
3 KiB
Go
// Copyright 2015 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package influxdb
|
|
|
|
import (
|
|
"math"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/common/log"
|
|
"github.com/prometheus/common/model"
|
|
|
|
influx "github.com/influxdb/influxdb/client"
|
|
)
|
|
|
|
// Client allows sending batches of Prometheus samples to InfluxDB.
|
|
type Client struct {
|
|
client *influx.Client
|
|
database string
|
|
retentionPolicy string
|
|
ignoredSamples prometheus.Counter
|
|
}
|
|
|
|
// NewClient creates a new Client.
|
|
func NewClient(conf influx.Config, db string, rp string) *Client {
|
|
c, err := influx.NewClient(conf)
|
|
// Currently influx.NewClient() *should* never return an error.
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
return &Client{
|
|
client: c,
|
|
database: db,
|
|
retentionPolicy: rp,
|
|
ignoredSamples: prometheus.NewCounter(
|
|
prometheus.CounterOpts{
|
|
Name: "prometheus_influxdb_ignored_samples_total",
|
|
Help: "The total number of samples not sent to InfluxDB due to unsupported float values (Inf, -Inf, NaN).",
|
|
},
|
|
),
|
|
}
|
|
}
|
|
|
|
// tagsFromMetric extracts InfluxDB tags from a Prometheus metric.
|
|
func tagsFromMetric(m model.Metric) map[string]string {
|
|
tags := make(map[string]string, len(m)-1)
|
|
for l, v := range m {
|
|
if l != model.MetricNameLabel {
|
|
tags[string(l)] = string(v)
|
|
}
|
|
}
|
|
return tags
|
|
}
|
|
|
|
// Store sends a batch of samples to InfluxDB via its HTTP API.
|
|
func (c *Client) Store(samples model.Samples) error {
|
|
points := make([]influx.Point, 0, len(samples))
|
|
for _, s := range samples {
|
|
v := float64(s.Value)
|
|
if math.IsNaN(v) || math.IsInf(v, 0) {
|
|
log.Debugf("cannot send value %f to InfluxDB, skipping sample %#v", v, s)
|
|
c.ignoredSamples.Inc()
|
|
continue
|
|
}
|
|
points = append(points, influx.Point{
|
|
Measurement: string(s.Metric[model.MetricNameLabel]),
|
|
Tags: tagsFromMetric(s.Metric),
|
|
Time: s.Timestamp.Time(),
|
|
Precision: "ms",
|
|
Fields: map[string]interface{}{
|
|
"value": v,
|
|
},
|
|
})
|
|
}
|
|
|
|
bps := influx.BatchPoints{
|
|
Points: points,
|
|
Database: c.database,
|
|
RetentionPolicy: c.retentionPolicy,
|
|
}
|
|
_, err := c.client.Write(bps)
|
|
return err
|
|
}
|
|
|
|
// Name identifies the client as an InfluxDB client.
|
|
func (c Client) Name() string {
|
|
return "influxdb"
|
|
}
|
|
|
|
// Describe implements prometheus.Collector.
|
|
func (c *Client) Describe(ch chan<- *prometheus.Desc) {
|
|
ch <- c.ignoredSamples.Desc()
|
|
}
|
|
|
|
// Collect implements prometheus.Collector.
|
|
func (c *Client) Collect(ch chan<- prometheus.Metric) {
|
|
ch <- c.ignoredSamples
|
|
}
|