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* feat: ms teams initial version * fix: solved issues found during ms teams testing * fix: added retry code for ms teams sender
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| // Copyright 2023 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 msteams | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
|
|
||
| "github.com/go-kit/log" | ||
| "github.com/go-kit/log/level" | ||
| commoncfg "github.com/prometheus/common/config" | ||
| "github.com/prometheus/common/model" | ||
|
|
||
| "github.com/prometheus/alertmanager/config" | ||
| "github.com/prometheus/alertmanager/notify" | ||
| "github.com/prometheus/alertmanager/template" | ||
| "github.com/prometheus/alertmanager/types" | ||
| ) | ||
|
|
||
| const ( | ||
| colorRed = "8C1A1A" | ||
| colorGreen = "2DC72D" | ||
| colorGrey = "808080" | ||
| ) | ||
|
|
||
| type Notifier struct { | ||
| conf *config.MSTeamsConfig | ||
| tmpl *template.Template | ||
| logger log.Logger | ||
| client *http.Client | ||
| retrier *notify.Retrier | ||
| webhookURL *config.SecretURL | ||
| postJSONFunc func(ctx context.Context, client *http.Client, url string, body io.Reader) (*http.Response, error) | ||
| } | ||
|
|
||
| // Message card reference can be found at https://learn.microsoft.com/en-us/outlook/actionable-messages/message-card-reference. | ||
| type teamsMessage struct { | ||
| Context string `json:"@context"` | ||
| Type string `json:"type"` | ||
| Title string `json:"title"` | ||
| Text string `json:"text"` | ||
| ThemeColor string `json:"themeColor"` | ||
| } | ||
|
|
||
| // New returns a new notifier that uses the Microsoft Teams Webhook API. | ||
| func New(c *config.MSTeamsConfig, t *template.Template, l log.Logger, httpOpts ...commoncfg.HTTPClientOption) (*Notifier, error) { | ||
| client, err := commoncfg.NewClientFromConfig(*c.HTTPConfig, "msteams", httpOpts...) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| n := &Notifier{ | ||
| conf: c, | ||
| tmpl: t, | ||
| logger: l, | ||
| client: client, | ||
| retrier: ¬ify.Retrier{RetryCodes: []int{429}}, | ||
| webhookURL: c.WebhookURL, | ||
| postJSONFunc: notify.PostJSON, | ||
| } | ||
|
|
||
| return n, nil | ||
| } | ||
|
|
||
| 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) | ||
|
|
||
| data := notify.GetTemplateData(ctx, n.tmpl, as, n.logger) | ||
| tmpl := notify.TmplText(n.tmpl, data, &err) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| title := tmpl(n.conf.Title) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
| text := tmpl(n.conf.Text) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| alerts := types.Alerts(as...) | ||
| color := colorGrey | ||
| switch alerts.Status() { | ||
| case model.AlertFiring: | ||
| color = colorRed | ||
| case model.AlertResolved: | ||
| color = colorGreen | ||
| } | ||
|
|
||
| t := teamsMessage{ | ||
| Context: "http://schema.org/extensions", | ||
| Type: "MessageCard", | ||
| Title: title, | ||
| Text: text, | ||
| ThemeColor: color, | ||
| } | ||
|
|
||
| var payload bytes.Buffer | ||
| if err = json.NewEncoder(&payload).Encode(t); err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| resp, err := n.postJSONFunc(ctx, n.client, n.webhookURL.String(), &payload) | ||
| if err != nil { | ||
| return true, notify.RedactURL(err) | ||
| } | ||
| defer notify.Drain(resp) | ||
|
|
||
| // https://learn.microsoft.com/en-us/microsoftteams/platform/webhooks-and-connectors/how-to/connectors-using?tabs=cURL#rate-limiting-for-connectors | ||
| retry, err := n.retrier.Check(resp.StatusCode, resp.Body) | ||
| if err != nil { | ||
| reasonErr := notify.NewErrorWithReason(notify.GetFailureReason(resp.StatusCode, fmt.Sprintf("%v", err.Error())), err) | ||
| return retry, reasonErr | ||
| } | ||
| return false, nil | ||
| } |
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