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https://github.com/VictoriaMetrics/VictoriaMetrics.git
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8c8ff5d0cb
The change introduces new entity `manager` which replaces `watchdog`, decouples requestHandler and groups. Manager supposed to control life cycle of groups, rules and config reloads. Groups export an ID method which returns a hash from filename and group name. ID supposed to be unique identifier across all loaded groups. Some tests were added to improve coverage. Bug with wrong annotation value if $value is used in templates after metrics being restored fixed. Notifier interface was extended to accept context. New set of metrics was introduced for config reload.
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package notifier
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import (
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"bytes"
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"context"
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"fmt"
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"io/ioutil"
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"net/http"
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"strings"
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)
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// AlertManager represents integration provider with Prometheus alert manager
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// https://github.com/prometheus/alertmanager
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type AlertManager struct {
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alertURL string
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argFunc AlertURLGenerator
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client *http.Client
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}
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// Send an alert or resolve message
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func (am *AlertManager) Send(ctx context.Context, alerts []Alert) error {
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b := &bytes.Buffer{}
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writeamRequest(b, alerts, am.argFunc)
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req, err := http.NewRequest("POST", am.alertURL, b)
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if err != nil {
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return err
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}
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req.Header.Set("Content-Type", "application/json")
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req = req.WithContext(ctx)
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resp, err := am.client.Do(req)
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if err != nil {
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return err
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}
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defer func() { _ = resp.Body.Close() }()
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if resp.StatusCode != http.StatusOK {
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("failed to read response from %q: %s", am.alertURL, err)
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}
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return fmt.Errorf("invalid SC %d from %q; response body: %s", resp.StatusCode, am.alertURL, string(body))
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}
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return nil
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}
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// AlertURLGenerator returns URL to single alert by given name
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type AlertURLGenerator func(group, alert string) string
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const alertManagerPath = "/api/v2/alerts"
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// NewAlertManager is a constructor for AlertManager
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func NewAlertManager(alertManagerURL string, fn AlertURLGenerator, c *http.Client) *AlertManager {
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return &AlertManager{
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alertURL: strings.TrimSuffix(alertManagerURL, "/") + alertManagerPath,
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argFunc: fn,
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client: c,
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}
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}
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