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