예제 #1
0
파일: impl.go 프로젝트: lukaf/alertmanager
// Notify implements the Notifier interface.
func (n *OpsGenie) Notify(ctx context.Context, as ...*types.Alert) error {
	key, ok := GroupKey(ctx)
	if !ok {
		return fmt.Errorf("group key missing")
	}
	data := n.tmpl.Data(receiver(ctx), groupLabels(ctx), as...)

	log.With("incident", key).Debugln("notifying OpsGenie")

	var err error
	tmpl := tmplText(n.tmpl, data, &err)

	details := make(map[string]string, len(n.conf.Details))
	for k, v := range n.conf.Details {
		details[k] = tmpl(v)
	}

	var (
		msg    interface{}
		apiURL string

		apiMsg = opsGenieMessage{
			APIKey: string(n.conf.APIKey),
			Alias:  key,
		}
		alerts = types.Alerts(as...)
	)
	switch alerts.Status() {
	case model.AlertResolved:
		apiURL = n.conf.APIHost + "v1/json/alert/close"
		msg = &opsGenieCloseMessage{&apiMsg}
	default:
		apiURL = n.conf.APIHost + "v1/json/alert"
		msg = &opsGenieCreateMessage{
			opsGenieMessage: &apiMsg,
			Message:         tmpl(n.conf.Description),
			Details:         details,
			Source:          tmpl(n.conf.Source),
		}
	}
	if err != nil {
		return fmt.Errorf("templating error: %s", err)
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(msg); err != nil {
		return err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, apiURL, contentTypeJSON, &buf)
	if err != nil {
		return err
	}
	resp.Body.Close()

	if resp.StatusCode/100 != 2 {
		return fmt.Errorf("unexpected status code %v", resp.StatusCode)
	}
	return nil
}
예제 #2
0
파일: impl.go 프로젝트: cherti/alertmanager
// Notify implements the Notifier interface.
func (w *Webhook) Notify(ctx context.Context, alerts ...*types.Alert) error {
	data := w.tmpl.Data(receiver(ctx), groupLabels(ctx), alerts...)

	groupKey, ok := GroupKey(ctx)
	if !ok {
		log.Errorf("group key missing")
	}

	msg := &WebhookMessage{
		Version:  "3",
		Data:     data,
		GroupKey: uint64(groupKey),
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(msg); err != nil {
		return err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, w.URL, contentTypeJSON, &buf)
	if err != nil {
		return err
	}
	resp.Body.Close()

	if resp.StatusCode/100 != 2 {
		return fmt.Errorf("unexpected status code %v from %s", resp.StatusCode, w.URL)
	}

	return nil
}
예제 #3
0
파일: impl.go 프로젝트: cherti/alertmanager
// Notify implements the Notifier interface.
func (n *Pushover) Notify(ctx context.Context, as ...*types.Alert) error {
	key, ok := GroupKey(ctx)
	if !ok {
		return fmt.Errorf("group key missing")
	}
	data := n.tmpl.Data(receiver(ctx), groupLabels(ctx), as...)

	log.With("incident", key).Debugln("notifying Pushover")

	var err error
	tmpl := tmplText(n.tmpl, data, &err)

	parameters := url.Values{}
	parameters.Add("token", tmpl(string(n.conf.Token)))
	parameters.Add("user", tmpl(string(n.conf.UserKey)))
	title := tmpl(n.conf.Title)
	message := tmpl(n.conf.Message)
	parameters.Add("title", title)
	if len(title) > 512 {
		title = title[:512]
		log.With("incident", key).Debugf("Truncated title to %q due to Pushover message limit", title)
	}
	if len(title)+len(message) > 512 {
		message = message[:512-len(title)]
		log.With("incident", key).Debugf("Truncated message to %q due to Pushover message limit", message)
	}
	message = strings.TrimSpace(message)
	if message == "" {
		// Pushover rejects empty messages.
		message = "(no details)"
	}
	parameters.Add("message", message)
	parameters.Add("url", tmpl(n.conf.URL))
	parameters.Add("priority", tmpl(n.conf.Priority))
	parameters.Add("retry", fmt.Sprintf("%d", int64(time.Duration(n.conf.Retry).Seconds())))
	parameters.Add("expire", fmt.Sprintf("%d", int64(time.Duration(n.conf.Expire).Seconds())))

	apiURL := "https://api.pushover.net/1/messages.json"
	u, err := url.Parse(apiURL)
	if err != nil {
		return err
	}
	u.RawQuery = parameters.Encode()
	log.With("incident", key).Debugf("Pushover URL = %q", u.String())

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, u.String(), "text/plain", nil)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	if resp.StatusCode/100 != 2 {
		body, err := ioutil.ReadAll(resp.Body)
		if err != nil {
			return err
		}
		return fmt.Errorf("unexpected status code %v (body: %s)", resp.StatusCode, string(body))
	}
	return nil
}
예제 #4
0
// Notify implements the Notifier interface.
func (w *Webhook) Notify(ctx context.Context, alerts ...*types.Alert) error {
	as := types.Alerts(alerts...)

	// If there are no annotations, instantiate so
	// {} is sent rather than null.
	for _, a := range as {
		if a.Annotations == nil {
			a.Annotations = model.LabelSet{}
		}
	}

	msg := &WebhookMessage{
		Version: "2",
		Status:  as.Status(),
		Alerts:  as,
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(msg); err != nil {
		return err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, w.URL, contentTypeJSON, &buf)
	if err != nil {
		return err
	}
	resp.Body.Close()

	if resp.StatusCode/100 != 2 {
		return fmt.Errorf("unexpected status code %v", resp.StatusCode)
	}

	return nil
}
예제 #5
0
// Notify implements the Notifier interface.
func (w *Webhook) Notify(ctx context.Context, alerts ...*types.Alert) (bool, error) {
	data := w.tmpl.Data(receiverName(ctx), groupLabels(ctx), alerts...)

	groupKey, ok := GroupKey(ctx)
	if !ok {
		log.Errorf("group key missing")
	}

	msg := &WebhookMessage{
		Version:  "3",
		Data:     data,
		GroupKey: uint64(groupKey),
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(msg); err != nil {
		return false, err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, w.URL, contentTypeJSON, &buf)
	if err != nil {
		return true, err
	}
	resp.Body.Close()

	return w.retry(resp.StatusCode)
}
예제 #6
0
func (n *Handler) send(alerts ...*model.Alert) error {
	// Attach external labels before sending alerts.
	for _, a := range alerts {
		for ln, lv := range n.opts.ExternalLabels {
			if _, ok := a.Labels[ln]; !ok {
				a.Labels[ln] = lv
			}
		}
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(alerts); err != nil {
		return err
	}
	ctx, _ := context.WithTimeout(context.Background(), n.opts.Timeout)

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, n.postURL(), contentTypeJSON, &buf)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	if resp.StatusCode/100 != 2 {
		return fmt.Errorf("bad response status %v", resp.Status)
	}
	return nil
}
예제 #7
0
파일: external.go 프로젝트: harche/docker
func makeExternalSignRequest(ctx context.Context, client *http.Client, url string, csrJSON []byte) (cert []byte, err error) {
	resp, err := ctxhttp.Post(ctx, client, url, "application/json", bytes.NewReader(csrJSON))
	if err != nil {
		return nil, recoverableErr{err: errors.Wrap(err, "unable to perform certificate signing request")}
	}

	doneReading := make(chan struct{})
	bodyClosed := make(chan struct{})
	go func() {
		select {
		case <-ctx.Done():
		case <-doneReading:
		}
		resp.Body.Close()
		close(bodyClosed)
	}()

	body, err := ioutil.ReadAll(resp.Body)
	close(doneReading)
	<-bodyClosed
	select {
	case <-ctx.Done():
		return nil, ctx.Err()
	default:
	}
	if err != nil {
		return nil, recoverableErr{err: errors.Wrap(err, "unable to read CSR response body")}
	}

	if resp.StatusCode != http.StatusOK {
		return nil, recoverableErr{err: errors.Errorf("unexpected status code in CSR response: %d - %s", resp.StatusCode, string(body))}
	}

	var apiResponse api.Response
	if err := json.Unmarshal(body, &apiResponse); err != nil {
		logrus.Debugf("unable to JSON-parse CFSSL API response body: %s", string(body))
		return nil, recoverableErr{err: errors.Wrap(err, "unable to parse JSON response")}
	}

	if !apiResponse.Success || apiResponse.Result == nil {
		if len(apiResponse.Errors) > 0 {
			return nil, errors.Errorf("response errors: %v", apiResponse.Errors)
		}

		return nil, errors.New("certificate signing request failed")
	}

	result, ok := apiResponse.Result.(map[string]interface{})
	if !ok {
		return nil, errors.Errorf("invalid result type: %T", apiResponse.Result)
	}

	certPEM, ok := result["certificate"].(string)
	if !ok {
		return nil, errors.Errorf("invalid result certificate field type: %T", result["certificate"])
	}

	return []byte(certPEM), nil
}
예제 #8
0
// sendAll sends the alerts to all configured Alertmanagers at concurrently.
// It returns the number of sends that have failed.
func (n *Notifier) sendAll(alerts ...*model.Alert) int {
	begin := time.Now()

	// Attach external labels before sending alerts.
	for _, a := range alerts {
		for ln, lv := range n.opts.ExternalLabels {
			if _, ok := a.Labels[ln]; !ok {
				a.Labels[ln] = lv
			}
		}
	}

	b, err := json.Marshal(alerts)
	if err != nil {
		log.Errorf("Encoding alerts failed: %s", err)
		return len(n.opts.AlertmanagerURLs)
	}
	ctx, _ := context.WithTimeout(context.Background(), n.opts.Timeout)

	send := func(u string) error {
		resp, err := ctxhttp.Post(ctx, http.DefaultClient, postURL(u), contentTypeJSON, bytes.NewReader(b))
		if err != nil {
			return err
		}
		defer resp.Body.Close()

		if resp.StatusCode/100 != 2 {
			return fmt.Errorf("bad response status %v", resp.Status)
		}
		return err
	}

	var (
		wg        sync.WaitGroup
		numErrors uint64
	)
	for _, u := range n.opts.AlertmanagerURLs {
		wg.Add(1)

		go func(u string) {
			if err := send(u); err != nil {
				log.With("alertmanager", u).With("count", fmt.Sprintf("%d", len(alerts))).Errorf("Error sending alerts: %s", err)
				n.errors.WithLabelValues(u).Inc()
				atomic.AddUint64(&numErrors, 1)
			}
			n.latency.WithLabelValues(u).Observe(float64(time.Since(begin)) / float64(time.Second))
			n.sent.WithLabelValues(u).Add(float64(len(alerts)))

			wg.Done()
		}(u)
	}
	wg.Wait()

	return int(numErrors)
}
예제 #9
0
// Notify implements the Notifier interface.
//
// http://developer.pagerduty.com/documentation/integration/events/trigger
func (n *PagerDuty) Notify(ctx context.Context, as ...*types.Alert) error {
	key, ok := GroupKey(ctx)
	if !ok {
		return fmt.Errorf("group key missing")
	}

	var err error
	var (
		alerts    = types.Alerts(as...)
		data      = n.tmpl.Data(receiver(ctx), groupLabels(ctx), as...)
		tmpl      = tmplText(n.tmpl, data, &err)
		eventType = pagerDutyEventTrigger
	)
	if alerts.Status() == model.AlertResolved {
		eventType = pagerDutyEventResolve
	}

	log.With("incident", key).With("eventType", eventType).Debugln("notifying PagerDuty")

	details := make(map[string]string, len(n.conf.Details))
	for k, v := range n.conf.Details {
		details[k] = tmpl(v)
	}

	msg := &pagerDutyMessage{
		ServiceKey:  tmpl(string(n.conf.ServiceKey)),
		EventType:   eventType,
		IncidentKey: key,
		Description: tmpl(n.conf.Description),
		Details:     details,
	}
	if eventType == pagerDutyEventTrigger {
		msg.Client = tmpl(n.conf.Client)
		msg.ClientURL = tmpl(n.conf.ClientURL)
	}
	if err != nil {
		return err
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(msg); err != nil {
		return err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, n.conf.URL, contentTypeJSON, &buf)
	if err != nil {
		return err
	}
	resp.Body.Close()

	if resp.StatusCode/100 != 2 {
		return fmt.Errorf("unexpected status code %v", resp.StatusCode)
	}
	return nil
}
예제 #10
0
파일: acme.go 프로젝트: giantswarm/mayu
// postJWS signs the body with the given key and POSTs it to the provided url.
// The body argument must be JSON-serializable.
func postJWS(ctx context.Context, client *http.Client, key crypto.Signer, url string, body interface{}) (*http.Response, error) {
	nonce, err := fetchNonce(ctx, client, url)
	if err != nil {
		return nil, err
	}
	b, err := jwsEncodeJSON(body, key, nonce)
	if err != nil {
		return nil, err
	}
	return ctxhttp.Post(ctx, client, url, "application/jose+json", bytes.NewReader(b))
}
예제 #11
0
func (n *Notifier) sendOne(ctx context.Context, c *http.Client, url string, b []byte) error {
	resp, err := ctxhttp.Post(ctx, c, url, contentTypeJSON, bytes.NewReader(b))
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	// Any HTTP status 2xx is OK.
	if resp.StatusCode/100 != 2 {
		return fmt.Errorf("bad response status %v", resp.Status)
	}
	return err
}
예제 #12
0
파일: req.go 프로젝트: jeffjen/ambd
func CreateReq(pflag *arg.Info) (output chan *Response) {
	var (
		wg sync.WaitGroup

		root = ctx.Background()

		v = make(chan *Response, 1)
	)

	go func() {
		defer close(v)

		for _, endpoint := range Endpoint {
			wg.Add(1)
			go func(ep string) {
				defer wg.Done()

				var body *bytes.Reader
				if buf, err := json.Marshal(pflag); err != nil {
					v <- &Response{Host: ep, Err: err}
					return
				} else {
					body = bytes.NewReader(buf)
				}

				wk, abort := ctx.WithTimeout(root, DefaultTimeout)
				defer abort()

				resp, err := ctxhttp.Post(wk, nil, ep+"/proxy", "application/json", body)
				if err != nil {
					v <- &Response{Host: ep, Err: err}
					return
				}
				defer resp.Body.Close()

				inn := new(bytes.Buffer)
				io.Copy(inn, resp.Body)
				if ans := inn.String(); ans != "done" {
					v <- &Response{Host: ep, Err: errors.New(ans)}
					return
				}

				v <- &Response{Host: ep}

			}(endpoint)
		}
		wg.Wait()
	}()

	return v
}
예제 #13
0
func (c *ArtifactStoreClient) postAPI(path string, contentType string, body io.Reader) (io.ReadCloser, *ArtifactsError) {
	url := c.server + path
	ctx, cancel := context.WithTimeout(c.ctx, c.timeout)
	defer cancel()

	if resp, err := ctxhttp.Post(ctx, nil, url, contentType, body); err != nil {
		// If there was an error connecting to the server, it is likely to be transient and should be
		// retried.
		return nil, NewRetriableError(err.Error())
	} else {
		if resp.StatusCode != http.StatusOK {
			return nil, determineResponseError(resp, url, "POST")
		}
		return resp.Body, nil
	}
}
예제 #14
0
// Notify implements the Notifier interface.
func (n *Hipchat) Notify(ctx context.Context, as ...*types.Alert) error {
	var err error
	var msg string
	var (
		data     = n.tmpl.Data(receiver(ctx), groupLabels(ctx), as...)
		tmplText = tmplText(n.tmpl, data, &err)
		tmplHTML = tmplHTML(n.tmpl, data, &err)
		url      = fmt.Sprintf("%sv2/room/%s/notification?auth_token=%s", n.conf.APIURL, n.conf.RoomID, n.conf.AuthToken)
	)

	if n.conf.MessageFormat == "html" {
		msg = tmplHTML(n.conf.Message)
	} else {
		msg = tmplText(n.conf.Message)
	}

	req := &hipchatReq{
		From:          tmplText(n.conf.From),
		Notify:        n.conf.Notify,
		Message:       msg,
		MessageFormat: n.conf.MessageFormat,
		Color:         tmplText(n.conf.Color),
	}
	if err != nil {
		return err
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(req); err != nil {
		return err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, url, contentTypeJSON, &buf)
	if err != nil {
		return err
	}

	defer resp.Body.Close()

	if resp.StatusCode/100 != 2 {
		return fmt.Errorf("unexpected status code %v", resp.StatusCode)
	}

	return nil
}
예제 #15
0
// Notify implements the Notifier interface.
func (n *Slack) Notify(ctx context.Context, as ...*types.Alert) error {
	var err error
	var (
		data     = n.tmpl.Data(receiver(ctx), groupLabels(ctx), as...)
		tmplText = tmplText(n.tmpl, data, &err)
		tmplHTML = tmplHTML(n.tmpl, data, &err)
	)

	attachment := &slackAttachment{
		Title:     tmplText(n.conf.Title),
		TitleLink: tmplText(n.conf.TitleLink),
		Pretext:   tmplText(n.conf.Pretext),
		Text:      tmplHTML(n.conf.Text),
		Fallback:  tmplText(n.conf.Fallback),
		Color:     tmplText(n.conf.Color),
		MrkdwnIn:  []string{"fallback", "pretext"},
	}
	req := &slackReq{
		Channel:     tmplText(n.conf.Channel),
		Username:    tmplText(n.conf.Username),
		Attachments: []slackAttachment{*attachment},
	}
	if err != nil {
		return err
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(req); err != nil {
		return err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, string(n.conf.APIURL), contentTypeJSON, &buf)
	if err != nil {
		return err
	}
	// TODO(fabxc): is 2xx status code really indicator for success for Slack API?
	resp.Body.Close()

	if resp.StatusCode/100 != 2 {
		return fmt.Errorf("unexpected status code %v", resp.StatusCode)
	}

	return nil
}
예제 #16
0
// Notify implements the Notifier interface.
func (n *Slack) Notify(ctx context.Context, as ...*types.Alert) (bool, error) {
	var err error
	var (
		data     = n.tmpl.Data(receiverName(ctx), groupLabels(ctx), as...)
		tmplText = tmplText(n.tmpl, data, &err)
	)

	attachment := &slackAttachment{
		Title:     tmplText(n.conf.Title),
		TitleLink: tmplText(n.conf.TitleLink),
		Pretext:   tmplText(n.conf.Pretext),
		Text:      tmplText(n.conf.Text),
		Fallback:  tmplText(n.conf.Fallback),
		Color:     tmplText(n.conf.Color),
		MrkdwnIn:  []string{"fallback", "pretext", "text"},
	}
	req := &slackReq{
		Channel:     tmplText(n.conf.Channel),
		Username:    tmplText(n.conf.Username),
		IconEmoji:   tmplText(n.conf.IconEmoji),
		IconURL:     tmplText(n.conf.IconURL),
		Attachments: []slackAttachment{*attachment},
	}
	if err != nil {
		return false, err
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(req); err != nil {
		return false, err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, string(n.conf.APIURL), contentTypeJSON, &buf)
	if err != nil {
		return true, err
	}
	resp.Body.Close()

	return n.retry(resp.StatusCode)
}
예제 #17
0
// Notify implements the Notifier interface.
func (n *VictorOps) Notify(ctx context.Context, as ...*types.Alert) (bool, error) {
	victorOpsAllowedEvents := map[string]bool{
		"INFO":     true,
		"WARNING":  true,
		"CRITICAL": true,
	}

	key, ok := GroupKey(ctx)
	if !ok {
		return false, fmt.Errorf("group key missing")
	}

	var err error
	var (
		alerts      = types.Alerts(as...)
		data        = n.tmpl.Data(receiverName(ctx), groupLabels(ctx), as...)
		tmpl        = tmplText(n.tmpl, data, &err)
		apiURL      = fmt.Sprintf("%s%s/%s", n.conf.APIURL, n.conf.APIKey, n.conf.RoutingKey)
		messageType = n.conf.MessageType
	)

	if alerts.Status() == model.AlertFiring && !victorOpsAllowedEvents[messageType] {
		messageType = victorOpsEventTrigger
	}

	if alerts.Status() == model.AlertResolved {
		messageType = victorOpsEventResolve
	}

	msg := &victorOpsMessage{
		MessageType:  messageType,
		EntityID:     key,
		StateMessage: tmpl(n.conf.StateMessage),
		From:         tmpl(n.conf.From),
	}

	if err != nil {
		return false, fmt.Errorf("templating error: %s", err)
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(msg); err != nil {
		return false, err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, apiURL, contentTypeJSON, &buf)
	if err != nil {
		return true, err
	}

	defer resp.Body.Close()

	// Missing documentation therefore assuming only 5xx response codes are
	// recoverable.
	if resp.StatusCode/100 == 5 {
		return true, fmt.Errorf("unexpected status code %v", resp.StatusCode)
	}

	if resp.StatusCode/100 != 2 {
		body, _ := ioutil.ReadAll(resp.Body)

		var responseMessage victorOpsErrorResponse
		if err := json.Unmarshal(body, &responseMessage); err != nil {
			return false, fmt.Errorf("could not parse error response %q", body)
		}

		log.With("incident", key).Debugf("unexpected VictorOps response from %s (POSTed %s), %s: %s", apiURL, msg, resp.Status, body)

		return false, fmt.Errorf("error when posting alert: result %q, message %q",
			responseMessage.Result, responseMessage.Message)
	}

	return false, nil
}
예제 #18
0
파일: impl.go 프로젝트: cherti/alertmanager
// Notify implements the Notifier interface.
func (n *OpsGenie) Notify(ctx context.Context, as ...*types.Alert) error {
	key, ok := GroupKey(ctx)
	if !ok {
		return fmt.Errorf("group key missing")
	}
	data := n.tmpl.Data(receiver(ctx), groupLabels(ctx), as...)

	log.With("incident", key).Debugln("notifying OpsGenie")

	var err error
	tmpl := tmplText(n.tmpl, data, &err)

	details := make(map[string]string, len(n.conf.Details))
	for k, v := range n.conf.Details {
		details[k] = tmpl(v)
	}

	var (
		msg    interface{}
		apiURL string

		apiMsg = opsGenieMessage{
			APIKey: string(n.conf.APIKey),
			Alias:  key,
		}
		alerts = types.Alerts(as...)
	)
	switch alerts.Status() {
	case model.AlertResolved:
		apiURL = n.conf.APIHost + "v1/json/alert/close"
		msg = &opsGenieCloseMessage{&apiMsg}
	default:
		apiURL = n.conf.APIHost + "v1/json/alert"
		msg = &opsGenieCreateMessage{
			opsGenieMessage: &apiMsg,
			Message:         tmpl(n.conf.Description),
			Details:         details,
			Source:          tmpl(n.conf.Source),
			Teams:           tmpl(n.conf.Teams),
			Tags:            tmpl(n.conf.Tags),
		}
	}
	if err != nil {
		return fmt.Errorf("templating error: %s", err)
	}

	var buf bytes.Buffer
	if err := json.NewEncoder(&buf).Encode(msg); err != nil {
		return err
	}

	resp, err := ctxhttp.Post(ctx, http.DefaultClient, apiURL, contentTypeJSON, &buf)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	if resp.StatusCode == 400 && alerts.Status() == model.AlertResolved {
		body, _ := ioutil.ReadAll(resp.Body)

		var responseMessage opsGenieErrorResponse
		if err := json.Unmarshal(body, &responseMessage); err != nil {
			return fmt.Errorf("could not parse error response %q", body)
		}
		const alreadyClosedError = 5
		if responseMessage.Code == alreadyClosedError {
			return nil
		}
		return fmt.Errorf("error when closing alert: code %d, error %q",
			responseMessage.Code, responseMessage.Error)
	} else if resp.StatusCode/100 != 2 {
		body, _ := ioutil.ReadAll(resp.Body)
		log.With("incident", key).Debugf("unexpected OpsGenie response from %s (POSTed %s), %s: %s",
			apiURL, msg, resp.Status, body)
		return fmt.Errorf("unexpected status code %v", resp.StatusCode)
	}
	return nil
}