func()

in notify/discord/discord.go [88:160]

• 64 lines of code
• 14 McCabe index (conditional complexity)

func (n *Notifier) Notify(ctx context.Context, as ...*types.Alert) (bool, error) {
	key, err := notify.ExtractGroupKey(ctx)
	if err != nil {
		return false, err
	}

	level.Debug(n.logger).Log("incident", key)

	alerts := types.Alerts(as...)
	data := notify.GetTemplateData(ctx, n.tmpl, as, n.logger)
	tmpl := notify.TmplText(n.tmpl, data, &err)
	if err != nil {
		return false, err
	}

	title, truncated := notify.TruncateInRunes(tmpl(n.conf.Title), maxTitleLenRunes)
	if err != nil {
		return false, err
	}
	if truncated {
		level.Warn(n.logger).Log("msg", "Truncated title", "key", key, "max_runes", maxTitleLenRunes)
	}
	description, truncated := notify.TruncateInRunes(tmpl(n.conf.Message), maxDescriptionLenRunes)
	if err != nil {
		return false, err
	}
	if truncated {
		level.Warn(n.logger).Log("msg", "Truncated message", "key", key, "max_runes", maxDescriptionLenRunes)
	}

	color := colorGrey
	if alerts.Status() == model.AlertFiring {
		color = colorRed
	}
	if alerts.Status() == model.AlertResolved {
		color = colorGreen
	}

	var url string
	if n.conf.WebhookURL != nil {
		url = n.conf.WebhookURL.String()
	} else {
		content, err := os.ReadFile(n.conf.WebhookURLFile)
		if err != nil {
			return false, fmt.Errorf("read webhook_url_file: %w", err)
		}
		url = strings.TrimSpace(string(content))
	}

	w := webhook{
		Embeds: []webhookEmbed{{
			Title:       title,
			Description: description,
			Color:       color,
		}},
	}

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

	resp, err := notify.PostJSON(ctx, n.client, url, &payload)
	if err != nil {
		return true, notify.RedactURL(err)
	}

	shouldRetry, err := n.retrier.Check(resp.StatusCode, resp.Body)
	if err != nil {
		return shouldRetry, err
	}
	return false, nil
}