297 lines
8.6 KiB
Go
297 lines
8.6 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 opsgenie
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"os"
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"strings"
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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"github.com/pkg/errors"
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commoncfg "github.com/prometheus/common/config"
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"github.com/prometheus/common/model"
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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 OpsGenie notifications.
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type Notifier struct {
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conf *config.OpsGenieConfig
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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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}
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// New returns a new OpsGenie notifier.
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func New(c *config.OpsGenieConfig, t *template.Template, l log.Logger, httpOpts ...commoncfg.HTTPClientOption) (*Notifier, error) {
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client, err := commoncfg.NewClientFromConfig(*c.HTTPConfig, "opsgenie", httpOpts...)
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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{RetryCodes: []int{http.StatusTooManyRequests}},
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}, nil
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}
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type opsGenieCreateMessage struct {
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Alias string `json:"alias"`
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Message string `json:"message"`
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Description string `json:"description,omitempty"`
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Details map[string]string `json:"details"`
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Source string `json:"source"`
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Responders []opsGenieCreateMessageResponder `json:"responders,omitempty"`
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Tags []string `json:"tags,omitempty"`
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Note string `json:"note,omitempty"`
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Priority string `json:"priority,omitempty"`
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Entity string `json:"entity,omitempty"`
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Actions []string `json:"actions,omitempty"`
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}
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type opsGenieCreateMessageResponder struct {
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ID string `json:"id,omitempty"`
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Name string `json:"name,omitempty"`
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Username string `json:"username,omitempty"`
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Type string `json:"type"` // team, user, escalation, schedule etc.
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}
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type opsGenieCloseMessage struct {
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Source string `json:"source"`
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}
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type opsGenieUpdateMessageMessage struct {
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Message string `json:"message,omitempty"`
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}
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type opsGenieUpdateDescriptionMessage struct {
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Description string `json:"description,omitempty"`
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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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requests, retry, err := n.createRequests(ctx, as...)
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if err != nil {
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return retry, err
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}
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for _, req := range requests {
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req.Header.Set("User-Agent", notify.UserAgentHeader)
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resp, err := n.client.Do(req)
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if err != nil {
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return true, err
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}
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shouldRetry, err := n.retrier.Check(resp.StatusCode, resp.Body)
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notify.Drain(resp)
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if err != nil {
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return shouldRetry, err
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}
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}
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return true, nil
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}
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// Like Split but filter out empty strings.
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func safeSplit(s, sep string) []string {
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a := strings.Split(strings.TrimSpace(s), sep)
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b := a[:0]
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for _, x := range a {
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if x != "" {
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b = append(b, x)
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}
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}
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return b
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}
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// Create requests for a list of alerts.
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func (n *Notifier) createRequests(ctx context.Context, as ...*types.Alert) ([]*http.Request, bool, error) {
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key, err := notify.ExtractGroupKey(ctx)
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if err != nil {
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return nil, false, err
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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("alert", key)
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tmpl := notify.TmplText(n.tmpl, data, &err)
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details := make(map[string]string)
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for k, v := range data.CommonLabels {
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details[k] = v
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}
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for k, v := range n.conf.Details {
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details[k] = tmpl(v)
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}
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requests := []*http.Request{}
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var (
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alias = key.Hash()
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alerts = types.Alerts(as...)
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)
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switch alerts.Status() {
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case model.AlertResolved:
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resolvedEndpointURL := n.conf.APIURL.Copy()
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resolvedEndpointURL.Path += fmt.Sprintf("v2/alerts/%s/close", alias)
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q := resolvedEndpointURL.Query()
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q.Set("identifierType", "alias")
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resolvedEndpointURL.RawQuery = q.Encode()
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msg := &opsGenieCloseMessage{Source: tmpl(n.conf.Source)}
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var buf bytes.Buffer
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if err := json.NewEncoder(&buf).Encode(msg); err != nil {
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return nil, false, err
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}
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req, err := http.NewRequest("POST", resolvedEndpointURL.String(), &buf)
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if err != nil {
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return nil, true, err
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}
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requests = append(requests, req.WithContext(ctx))
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default:
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message, truncated := notify.Truncate(tmpl(n.conf.Message), 130)
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if truncated {
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level.Debug(n.logger).Log("msg", "truncated message", "truncated_message", message, "alert", key)
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}
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createEndpointURL := n.conf.APIURL.Copy()
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createEndpointURL.Path += "v2/alerts"
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var responders []opsGenieCreateMessageResponder
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for _, r := range n.conf.Responders {
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responder := opsGenieCreateMessageResponder{
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ID: tmpl(r.ID),
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Name: tmpl(r.Name),
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Username: tmpl(r.Username),
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Type: tmpl(r.Type),
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}
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if responder == (opsGenieCreateMessageResponder{}) {
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// Filter out empty responders. This is useful if you want to fill
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// responders dynamically from alert's common labels.
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continue
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}
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if responder.Type == "teams" {
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teams := safeSplit(responder.Name, ",")
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for _, team := range teams {
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newResponder := opsGenieCreateMessageResponder{
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Name: tmpl(team),
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Type: tmpl("team"),
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}
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responders = append(responders, newResponder)
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}
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continue
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}
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responders = append(responders, responder)
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}
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msg := &opsGenieCreateMessage{
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Alias: alias,
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Message: message,
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Description: tmpl(n.conf.Description),
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Details: details,
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Source: tmpl(n.conf.Source),
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Responders: responders,
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Tags: safeSplit(tmpl(n.conf.Tags), ","),
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Note: tmpl(n.conf.Note),
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Priority: tmpl(n.conf.Priority),
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Entity: tmpl(n.conf.Entity),
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Actions: safeSplit(tmpl(n.conf.Actions), ","),
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}
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var buf bytes.Buffer
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if err := json.NewEncoder(&buf).Encode(msg); err != nil {
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return nil, false, err
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}
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req, err := http.NewRequest("POST", createEndpointURL.String(), &buf)
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if err != nil {
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return nil, true, err
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}
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requests = append(requests, req.WithContext(ctx))
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if n.conf.UpdateAlerts {
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updateMessageEndpointURL := n.conf.APIURL.Copy()
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updateMessageEndpointURL.Path += fmt.Sprintf("v2/alerts/%s/message", alias)
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q := updateMessageEndpointURL.Query()
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q.Set("identifierType", "alias")
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updateMessageEndpointURL.RawQuery = q.Encode()
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updateMsgMsg := &opsGenieUpdateMessageMessage{
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Message: msg.Message,
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}
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var updateMessageBuf bytes.Buffer
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if err := json.NewEncoder(&updateMessageBuf).Encode(updateMsgMsg); err != nil {
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return nil, false, err
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}
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req, err := http.NewRequest("PUT", updateMessageEndpointURL.String(), &updateMessageBuf)
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if err != nil {
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return nil, true, err
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}
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requests = append(requests, req)
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updateDescriptionEndpointURL := n.conf.APIURL.Copy()
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updateDescriptionEndpointURL.Path += fmt.Sprintf("v2/alerts/%s/description", alias)
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q = updateDescriptionEndpointURL.Query()
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q.Set("identifierType", "alias")
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updateDescriptionEndpointURL.RawQuery = q.Encode()
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updateDescMsg := &opsGenieUpdateDescriptionMessage{
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Description: msg.Description,
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}
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var updateDescriptionBuf bytes.Buffer
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if err := json.NewEncoder(&updateDescriptionBuf).Encode(updateDescMsg); err != nil {
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return nil, false, err
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}
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req, err = http.NewRequest("PUT", updateDescriptionEndpointURL.String(), &updateDescriptionBuf)
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if err != nil {
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return nil, true, err
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}
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requests = append(requests, req.WithContext(ctx))
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}
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}
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var apiKey string
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if n.conf.APIKey != "" {
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apiKey = tmpl(string(n.conf.APIKey))
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} else {
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content, err := os.ReadFile(n.conf.APIKeyFile)
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if err != nil {
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return nil, false, errors.Wrap(err, "read key_file error")
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}
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apiKey = tmpl(string(content))
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}
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if err != nil {
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return nil, false, errors.Wrap(err, "templating error")
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}
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for _, req := range requests {
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("Authorization", fmt.Sprintf("GenieKey %s", apiKey))
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}
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return requests, true, nil
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}
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