159 lines
3.2 KiB
Go
159 lines
3.2 KiB
Go
// Copyright 2019 Drone.IO Inc. All rights reserved.
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// Use of this source code is governed by the Drone Non-Commercial License
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// that can be found in the LICENSE file.
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// +build !oss
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package sink
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"time"
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"github.com/drone/drone/core"
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)
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type payload struct {
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Series []series `json:"series"`
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}
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type series struct {
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Metric string `json:"metric"`
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Points [][]int64 `json:"points"`
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Host string `json:"host"`
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Type string `json:"type"`
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Tags []string `json:"tags,omitempty"`
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}
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// Datadog defines a no-op sink to datadog.
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type Datadog struct {
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users core.UserStore
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repos core.RepositoryStore
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builds core.BuildStore
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system core.System
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config Config
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client *http.Client
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}
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// New returns a Datadog sink.
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func New(
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users core.UserStore,
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repos core.RepositoryStore,
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builds core.BuildStore,
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system core.System,
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config Config,
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) *Datadog {
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return &Datadog{
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users: users,
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repos: repos,
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builds: builds,
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system: system,
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config: config,
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}
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}
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// Start starts the sink.
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func (d *Datadog) Start(ctx context.Context) error {
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for {
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diff := midnightDiff()
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select {
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case <-time.After(diff):
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d.do(ctx, time.Now().Unix())
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case <-ctx.Done():
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return nil
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}
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}
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}
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func (d *Datadog) do(ctx context.Context, unix int64) error {
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users, err := d.users.Count(ctx)
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if err != nil {
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return err
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}
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repos, err := d.repos.Count(ctx)
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if err != nil {
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return err
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}
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builds, err := d.builds.Count(ctx)
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if err != nil {
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return err
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}
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tags := createTags(d.config)
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data := new(payload)
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data.Series = []series{
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{
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Metric: "drone.users",
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Points: [][]int64{[]int64{unix, users}},
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Type: "gauge",
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Host: d.system.Host,
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Tags: tags,
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},
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{
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Metric: "drone.repos",
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Points: [][]int64{[]int64{unix, repos}},
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Type: "gauge",
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Host: d.system.Host,
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Tags: tags,
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},
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{
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Metric: "drone.builds",
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Points: [][]int64{[]int64{unix, builds}},
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Type: "gauge",
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Host: d.system.Host,
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Tags: tags,
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},
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}
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buf := new(bytes.Buffer)
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err = json.NewEncoder(buf).Encode(data)
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if err != nil {
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return err
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}
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endpoint := fmt.Sprintf("%s?api_key=%s", d.config.Endpoint, d.config.Token)
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req, err := http.NewRequest("POST", endpoint, buf)
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if err != nil {
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return err
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}
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req.Header.Add("Accept", "application/json")
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req.Header.Add("Content-Type", "application/json")
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res, err := httpClient.Do(req)
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if err != nil {
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return err
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}
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res.Body.Close()
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return nil
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}
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// Client returns the http client. If no custom
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// client is provided, the default client is used.
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func (d *Datadog) Client() *http.Client {
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if d.client == nil {
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return httpClient
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}
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return d.client
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}
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// calculate the differences between now and midnight.
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func midnightDiff() time.Duration {
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a := time.Now()
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b := time.Date(a.Year(), a.Month(), a.Day()+1, 0, 0, 0, 0, a.Location())
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return b.Sub(a)
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}
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// httpClient should be used for HTTP requests. It
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// is configured with a timeout for reliability.
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var httpClient = &http.Client{
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Transport: &http.Transport{
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Proxy: http.ProxyFromEnvironment,
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TLSHandshakeTimeout: 30 * time.Second,
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DisableKeepAlives: true,
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},
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Timeout: 1 * time.Minute,
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}
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