alertmanager/notify/pushover/pushover.go
Simon Pasquier 655947d7e0
notify: refactor code to retry requests (#1974)
* 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>
2019-08-02 16:17:40 +02:00

135 lines
3.9 KiB
Go

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