plugeth/metrics/librato/client.go
Anton Evangelatov ae9f97221a metrics: pull library and introduce ResettingTimer and InfluxDB reporter (#15910)
* go-metrics: fork library and introduce ResettingTimer and InfluxDB reporter.

* vendor: change nonsense/go-metrics to ethersphere/go-metrics

* go-metrics: add tests. move ResettingTimer logic from reporter to type.

* all, metrics: pull in metrics package in go-ethereum

* metrics/test: make sure metrics are enabled for tests

* metrics: apply gosimple rules

* metrics/exp, internal/debug: init expvar endpoint when starting pprof server

* internal/debug: tiny comment formatting fix
2018-02-23 11:56:08 +02:00

103 lines
2.2 KiB
Go

package librato
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
)
const Operations = "operations"
const OperationsShort = "ops"
type LibratoClient struct {
Email, Token string
}
// property strings
const (
// display attributes
Color = "color"
DisplayMax = "display_max"
DisplayMin = "display_min"
DisplayUnitsLong = "display_units_long"
DisplayUnitsShort = "display_units_short"
DisplayStacked = "display_stacked"
DisplayTransform = "display_transform"
// special gauge display attributes
SummarizeFunction = "summarize_function"
Aggregate = "aggregate"
// metric keys
Name = "name"
Period = "period"
Description = "description"
DisplayName = "display_name"
Attributes = "attributes"
// measurement keys
MeasureTime = "measure_time"
Source = "source"
Value = "value"
// special gauge keys
Count = "count"
Sum = "sum"
Max = "max"
Min = "min"
SumSquares = "sum_squares"
// batch keys
Counters = "counters"
Gauges = "gauges"
MetricsPostUrl = "https://metrics-api.librato.com/v1/metrics"
)
type Measurement map[string]interface{}
type Metric map[string]interface{}
type Batch struct {
Gauges []Measurement `json:"gauges,omitempty"`
Counters []Measurement `json:"counters,omitempty"`
MeasureTime int64 `json:"measure_time"`
Source string `json:"source"`
}
func (self *LibratoClient) PostMetrics(batch Batch) (err error) {
var (
js []byte
req *http.Request
resp *http.Response
)
if len(batch.Counters) == 0 && len(batch.Gauges) == 0 {
return nil
}
if js, err = json.Marshal(batch); err != nil {
return
}
if req, err = http.NewRequest("POST", MetricsPostUrl, bytes.NewBuffer(js)); err != nil {
return
}
req.Header.Set("Content-Type", "application/json")
req.SetBasicAuth(self.Email, self.Token)
if resp, err = http.DefaultClient.Do(req); err != nil {
return
}
if resp.StatusCode != http.StatusOK {
var body []byte
if body, err = ioutil.ReadAll(resp.Body); err != nil {
body = []byte(fmt.Sprintf("(could not fetch response body for error: %s)", err))
}
err = fmt.Errorf("Unable to post to Librato: %d %s %s", resp.StatusCode, resp.Status, string(body))
}
return
}