Add summary to msteams notification

Signed-off-by: Roman Kubů <[email protected]>

Author: romankubu

config/notifiers.go

@@ -169,8 +169,9 @@ var (
 		NotifierConfig: NotifierConfig{
 			VSendResolved: true,
 		},
-		Title: `{{ template "msteams.default.title" . }}`,
-		Text:  `{{ template "msteams.default.text" . }}`,
+		Title:   `{{ template "msteams.default.title" . }}`,
+		Summary: `{{ template "msteams.default.summary" . }}`,
+		Text:    `{{ template "msteams.default.text" . }}`,
 	}
 )
 
@@ -788,8 +789,9 @@ type MSTeamsConfig struct {
 	HTTPConfig     *commoncfg.HTTPClientConfig `yaml:"http_config,omitempty" json:"http_config,omitempty"`
 	WebhookURL     *SecretURL                  `yaml:"webhook_url,omitempty" json:"webhook_url,omitempty"`
 
-	Title string `yaml:"title,omitempty" json:"title,omitempty"`
-	Text  string `yaml:"text,omitempty" json:"text,omitempty"`
+	Title   string `yaml:"title,omitempty" json:"title,omitempty"`
+	Summary string `yaml:"summary,omitempty" json:"summary,omitempty"`
+	Text    string `yaml:"text,omitempty" json:"text,omitempty"`
 }
 
 func (c *MSTeamsConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {

docs/configuration.md

@@ -736,6 +736,9 @@ Microsoft Teams notifications are sent via the [Incoming Webhooks](https://learn
 # Message title template.
 [ title: <tmpl_string> | default = '{{ template "msteams.default.title" . }}' ]
 
+# Message title template.
+[ summary: <tmpl_string> | default = '{{ template "msteams.default.summary" . }}' ]
+
 # Message body template.
 [ text: <tmpl_string> | default = '{{ template "msteams.default.text" . }}' ]
 

notify/msteams/msteams.go

@@ -52,6 +52,7 @@ type teamsMessage struct {
 	Context    string `json:"@context"`
 	Type       string `json:"type"`
 	Title      string `json:"title"`
+	Summary    string `json:"summary"`
 	Text       string `json:"text"`
 	ThemeColor string `json:"themeColor"`
 }
@@ -98,6 +99,10 @@ func (n *Notifier) Notify(ctx context.Context, as ...*types.Alert) (bool, error)
 	if err != nil {
 		return false, err
 	}
+	summary := tmpl(n.conf.Summary)
+	if err != nil {
+		return false, err
+	}
 
 	alerts := types.Alerts(as...)
 	color := colorGrey
@@ -112,6 +117,7 @@ func (n *Notifier) Notify(ctx context.Context, as ...*types.Alert) (bool, error)
 		Context:    "http://schema.org/extensions",
 		Type:       "MessageCard",
 		Title:      title,
+		Summary:    summary,
 		Text:       text,
 		ThemeColor: color,
 	}

notify/msteams/msteams_test.go

@@ -77,8 +77,9 @@ func TestMSTeamsTemplating(t *testing.T) {
 		{
 			title: "full-blown message",
 			cfg: &config.MSTeamsConfig{
-				Title: `{{ template "msteams.default.title" . }}`,
-				Text:  `{{ template "msteams.default.text" . }}`,
+				Title:   `{{ template "msteams.default.title" . }}`,
+				Summary: `{{ template "msteams.default.summary" . }}`,
+				Text:    `{{ template "msteams.default.text" . }}`,
 			},
 			retry: false,
 		},
@@ -89,11 +90,20 @@ func TestMSTeamsTemplating(t *testing.T) {
 			},
 			errMsg: "template: :1: unclosed action",
 		},
+		{
+			title: "summary with templating errors",
+			cfg: &config.MSTeamsConfig{
+				Title:   `{{ template "msteams.default.title" . }}`,
+				Summary: "{{ ",
+			},
+			errMsg: "template: :1: unclosed action",
+		},
 		{
 			title: "message with templating errors",
 			cfg: &config.MSTeamsConfig{
-				Title: `{{ template "msteams.default.title" . }}`,
-				Text:  "{{ ",
+				Title:   `{{ template "msteams.default.title" . }}`,
+				Summary: `{{ template "msteams.default.summary" . }}`,
+				Text:    "{{ ",
 			},
 			errMsg: "template: :1: unclosed action",
 		},

template/default.tmpl

@@ -146,6 +146,7 @@ Alerts Resolved:
 {{ end }}
 {{ end }}
 
+{{ define "msteams.default.summary" }}{{ template "__subject" . }}{{ end }}
 {{ define "msteams.default.title" }}{{ template "__subject" . }}{{ end }}
 {{ define "msteams.default.text" }}
 {{ if gt (len .Alerts.Firing) 0 }}