131 lines
3.4 KiB
Go
131 lines
3.4 KiB
Go
/*
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Copyright 2020 The Flux authors
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package notifier
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import (
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"context"
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"crypto/x509"
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"fmt"
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"net/url"
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"strings"
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eventv1 "github.com/fluxcd/pkg/apis/event/v1beta1"
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"github.com/hashicorp/go-retryablehttp"
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)
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// Slack holds the hook URL
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type Slack struct {
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URL string
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ProxyURL string
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Token string
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Username string
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Channel string
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CertPool *x509.CertPool
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}
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// SlackPayload holds the channel and attachments
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type SlackPayload struct {
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Channel string `json:"channel"`
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Username string `json:"username"`
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IconUrl string `json:"icon_url"`
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IconEmoji string `json:"icon_emoji"`
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Text string `json:"text,omitempty"`
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Attachments []SlackAttachment `json:"attachments,omitempty"`
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}
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// SlackAttachment holds the markdown message body
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type SlackAttachment struct {
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Color string `json:"color"`
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AuthorName string `json:"author_name"`
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Text string `json:"text"`
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MrkdwnIn []string `json:"mrkdwn_in"`
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Fields []SlackField `json:"fields"`
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}
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type SlackField struct {
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Title string `json:"title"`
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Value string `json:"value"`
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Short bool `json:"short"`
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}
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// NewSlack validates the Slack URL and returns a Slack object
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func NewSlack(hookURL string, proxyURL string, token string, certPool *x509.CertPool, username string, channel string) (*Slack, error) {
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_, err := url.ParseRequestURI(hookURL)
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if err != nil {
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return nil, fmt.Errorf("invalid Slack hook URL %s: '%w'", hookURL, err)
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}
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return &Slack{
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Channel: channel,
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Username: username,
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URL: hookURL,
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ProxyURL: proxyURL,
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Token: token,
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CertPool: certPool,
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}, nil
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}
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// Post Slack message
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func (s *Slack) Post(ctx context.Context, event eventv1.Event) error {
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// Skip Git commit status update event.
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if event.HasMetadata(eventv1.MetaCommitStatusKey, eventv1.MetaCommitStatusUpdateValue) {
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return nil
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}
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payload := SlackPayload{
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Username: s.Username,
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}
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if s.Channel != "" {
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payload.Channel = s.Channel
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}
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if payload.Username == "" {
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payload.Username = event.ReportingController
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}
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color := "good"
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if event.Severity == eventv1.EventSeverityError {
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color = "danger"
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}
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sfields := make([]SlackField, 0, len(event.Metadata))
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for k, v := range event.Metadata {
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sfields = append(sfields, SlackField{k, v, false})
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}
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a := SlackAttachment{
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Color: color,
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AuthorName: fmt.Sprintf("%s/%s.%s", strings.ToLower(event.InvolvedObject.Kind), event.InvolvedObject.Name, event.InvolvedObject.Namespace),
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Text: event.Message,
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MrkdwnIn: []string{"text"},
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Fields: sfields,
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}
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payload.Attachments = []SlackAttachment{a}
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err := postMessage(ctx, s.URL, s.ProxyURL, s.CertPool, payload, func(request *retryablehttp.Request) {
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if s.Token != "" {
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request.Header.Add("Authorization", "Bearer "+s.Token)
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}
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})
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if err != nil {
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return fmt.Errorf("postMessage failed: %w", err)
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}
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return nil
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}
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