Alerting: Adding color option for slack receiver (#99615)

pkg/services/ngalert/api/tooling/definitions/contact_points.go

@@ -227,6 +227,7 @@ type SlackIntegration struct {
 	MentionChannel *string `json:"mentionChannel,omitempty" yaml:"mentionChannel,omitempty" hcl:"mention_channel"`
 	MentionUsers   *string `json:"mentionUsers,omitempty" yaml:"mentionUsers,omitempty" hcl:"mention_users"`
 	MentionGroups  *string `json:"mentionGroups,omitempty" yaml:"mentionGroups,omitempty" hcl:"mention_groups"`
+	Color          *string `json:"color,omitempty" yaml:"color,omitempty" hcl:"color"`
 }
 
 type TelegramIntegration struct {

pkg/services/ngalert/models/receivers_test.go

@@ -331,7 +331,7 @@ func TestReceiver_Fingerprint(t *testing.T) {
 	completelyDifferentReceiver.Integrations[0].Config = IntegrationConfig{Type: completelyDifferentReceiver.Integrations[0].Config.Type} // Remove all fields except Type.
 
 	t.Run("stable across code changes", func(t *testing.T) {
-		expectedFingerprint := "a3402fdaba03030c" // If this is a valid fingerprint generation change, update the expected value.
+		expectedFingerprint := "c0c82936be34b183" // If this is a valid fingerprint generation change, update the expected value.
 		assert.Equal(t, expectedFingerprint, baseReceiver.Fingerprint())
 	})
 	t.Run("stable across clones", func(t *testing.T) {

pkg/services/ngalert/notifier/channels_config/available_channels.go

@@ -691,6 +691,14 @@ func GetAvailableNotifiers() []*NotifierPlugin {
 					Placeholder:  "Slack endpoint url",
 					PropertyName: "endpointUrl",
 				},
+				{
+					Label:        "Color",
+					Element:      ElementTypeInput,
+					InputType:    InputTypeText,
+					Description:  "Templated color of the slack message",
+					Placeholder:  alertingTemplates.DefaultMessageColor,
+					PropertyName: "color",
+				},
 				{ // New in 8.0.
 					Label:        "Title",
 					Element:      ElementTypeInput,