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webhook.go
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webhook.go
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package notifications
import (
"bytes"
"context"
"fmt"
"io/ioutil"
"net/http"
"time"
"golang.org/x/net/context/ctxhttp"
"github.com/grafana/grafana/pkg/log"
"github.com/grafana/grafana/pkg/util"
)
type Webhook struct {
Url string
User string
Password string
Body string
HttpMethod string
}
var webhookQueue chan *Webhook
var webhookLog log.Logger
func initWebhookQueue() {
webhookLog = log.New("notifications.webhook")
webhookQueue = make(chan *Webhook, 10)
go processWebhookQueue()
}
func processWebhookQueue() {
for {
select {
case webhook := <-webhookQueue:
err := sendWebRequestSync(context.TODO(), webhook)
if err != nil {
webhookLog.Error("Failed to send webrequest ", "error", err)
}
}
}
}
func sendWebRequestSync(ctx context.Context, webhook *Webhook) error {
webhookLog.Debug("Sending webhook", "url", webhook.Url, "http method", webhook.HttpMethod)
client := &http.Client{
Timeout: time.Duration(10 * time.Second),
}
if webhook.HttpMethod == "" {
webhook.HttpMethod = http.MethodPost
}
request, err := http.NewRequest(webhook.HttpMethod, webhook.Url, bytes.NewReader([]byte(webhook.Body)))
if webhook.User != "" && webhook.Password != "" {
request.Header.Add("Authorization", util.GetBasicAuthHeader(webhook.User, webhook.Password))
}
if err != nil {
return err
}
resp, err := ctxhttp.Do(ctx, client, request)
if err != nil {
return err
}
if resp.StatusCode/100 == 2 {
return nil
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
defer resp.Body.Close()
webhookLog.Debug("Webhook failed", "statuscode", resp.Status, "body", string(body))
return fmt.Errorf("Webhook response status %v", resp.Status)
}
var addToWebhookQueue = func(msg *Webhook) {
webhookQueue <- msg
}