mirror of
https://github.com/prometheus/alertmanager
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655947d7e0
* notify: refactor code to retry requests Signed-off-by: Simon Pasquier <spasquie@redhat.com> * s/Process/Check/ Signed-off-by: Simon Pasquier <spasquie@redhat.com>
135 lines
3.9 KiB
Go
135 lines
3.9 KiB
Go
// Copyright 2019 Prometheus Team
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package pushover
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import (
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"context"
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"fmt"
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"net/http"
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"net/url"
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"strings"
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"time"
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"github.com/go-kit/kit/log"
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"github.com/go-kit/kit/log/level"
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commoncfg "github.com/prometheus/common/config"
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"github.com/prometheus/alertmanager/config"
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"github.com/prometheus/alertmanager/notify"
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"github.com/prometheus/alertmanager/template"
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"github.com/prometheus/alertmanager/types"
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)
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// Notifier implements a Notifier for Pushover notifications.
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type Notifier struct {
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conf *config.PushoverConfig
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tmpl *template.Template
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logger log.Logger
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client *http.Client
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retrier *notify.Retrier
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apiURL string // for tests.
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}
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// New returns a new Pushover notifier.
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func New(c *config.PushoverConfig, t *template.Template, l log.Logger) (*Notifier, error) {
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client, err := commoncfg.NewClientFromConfig(*c.HTTPConfig, "pushover")
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if err != nil {
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return nil, err
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}
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return &Notifier{
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conf: c,
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tmpl: t,
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logger: l,
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client: client,
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retrier: ¬ify.Retrier{},
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apiURL: "https://api.pushover.net/1/messages.json",
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}, nil
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}
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// Notify implements the Notifier interface.
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func (n *Notifier) Notify(ctx context.Context, as ...*types.Alert) (bool, error) {
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key, ok := notify.GroupKey(ctx)
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if !ok {
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return false, fmt.Errorf("group key missing")
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}
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data := notify.GetTemplateData(ctx, n.tmpl, as, n.logger)
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level.Debug(n.logger).Log("incident", key)
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var (
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err error
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message string
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)
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tmpl := notify.TmplText(n.tmpl, data, &err)
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tmplHTML := notify.TmplHTML(n.tmpl, data, &err)
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parameters := url.Values{}
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parameters.Add("token", tmpl(string(n.conf.Token)))
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parameters.Add("user", tmpl(string(n.conf.UserKey)))
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title, truncated := notify.Truncate(tmpl(n.conf.Title), 250)
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if truncated {
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level.Debug(n.logger).Log("msg", "Truncated title", "truncated_title", title, "incident", key)
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}
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parameters.Add("title", title)
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if n.conf.HTML {
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parameters.Add("html", "1")
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message = tmplHTML(n.conf.Message)
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} else {
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message = tmpl(n.conf.Message)
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}
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message, truncated = notify.Truncate(message, 1024)
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if truncated {
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level.Debug(n.logger).Log("msg", "Truncated message", "truncated_message", message, "incident", key)
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}
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message = strings.TrimSpace(message)
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if message == "" {
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// Pushover rejects empty messages.
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message = "(no details)"
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}
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parameters.Add("message", message)
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supplementaryURL, truncated := notify.Truncate(tmpl(n.conf.URL), 512)
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if truncated {
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level.Debug(n.logger).Log("msg", "Truncated URL", "truncated_url", supplementaryURL, "incident", key)
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}
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parameters.Add("url", supplementaryURL)
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parameters.Add("url_title", tmpl(n.conf.URLTitle))
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parameters.Add("priority", tmpl(n.conf.Priority))
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parameters.Add("retry", fmt.Sprintf("%d", int64(time.Duration(n.conf.Retry).Seconds())))
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parameters.Add("expire", fmt.Sprintf("%d", int64(time.Duration(n.conf.Expire).Seconds())))
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parameters.Add("sound", tmpl(n.conf.Sound))
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if err != nil {
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return false, err
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}
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u, err := url.Parse(n.apiURL)
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if err != nil {
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return false, err
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}
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u.RawQuery = parameters.Encode()
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// Don't log the URL as it contains secret data (see #1825).
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level.Debug(n.logger).Log("msg", "Sending message", "incident", key)
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resp, err := notify.PostText(ctx, n.client, u.String(), nil)
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if err != nil {
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return true, notify.RedactURL(err)
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}
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defer notify.Drain(resp)
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return n.retrier.Check(resp.StatusCode, nil)
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}
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