Use model.Duration for timeout option in webhook notifier (#117)

Author: alexander-akhmetov

config/notifiers.go

@@ -598,7 +598,7 @@ type WebhookConfig struct {
 
 	// Timeout is the maximum time allowed to invoke the webhook. Setting this to 0
 	// does not impose a timeout.
-	Timeout time.Duration `yaml:"timeout" json:"timeout"`
+	Timeout model.Duration `yaml:"timeout" json:"timeout"`
 }
 
 // UnmarshalYAML implements the yaml.Unmarshaler interface.

notify/webhook/webhook.go

@@ -22,6 +22,7 @@ import (
 	"net/http"
 	"os"
 	"strings"
+	"time"
 
 	commoncfg "github.com/prometheus/common/config"
 	"go.opentelemetry.io/otel"
@@ -128,7 +129,7 @@ func (n *Notifier) Notify(ctx context.Context, alerts ...*types.Alert) (bool, er
 	}
 
 	if n.conf.Timeout > 0 {
-		postCtx, cancel := context.WithTimeoutCause(ctx, n.conf.Timeout, fmt.Errorf("configured webhook timeout reached (%s)", n.conf.Timeout))
+		postCtx, cancel := context.WithTimeoutCause(ctx, time.Duration(n.conf.Timeout), fmt.Errorf("configured webhook timeout reached (%s)", n.conf.Timeout))
 		defer cancel()
 		ctx = postCtx
 	}