Alerting: Add MQTT notifications receiver

docs/resources/contact_point.md

@@ -50,6 +50,7 @@ resource "grafana_contact_point" "my_contact_point" {
 - `googlechat` (Block Set) A contact point that sends notifications to Google Chat. (see [below for nested schema](#nestedblock--googlechat))
 - `kafka` (Block Set) A contact point that publishes notifications to Apache Kafka topics. (see [below for nested schema](#nestedblock--kafka))
 - `line` (Block Set) A contact point that sends notifications to LINE.me. (see [below for nested schema](#nestedblock--line))
+- `mqtt` (Block Set) A contact point that sends notifications to an MQTT broker. (see [below for nested schema](#nestedblock--mqtt))
 - `oncall` (Block Set) A contact point that sends notifications to Grafana On-Call. (see [below for nested schema](#nestedblock--oncall))
 - `opsgenie` (Block Set) A contact point that sends notifications to OpsGenie. (see [below for nested schema](#nestedblock--opsgenie))
 - `org_id` (String) The Organization ID. If not set, the Org ID defined in the provider block will be used.
@@ -212,6 +213,29 @@ Read-Only:
 - `uid` (String) The UID of the contact point.
 
 
+<a id="nestedblock--mqtt"></a>
+### Nested Schema for `mqtt`
+
+Required:
+
+- `broker_url` (String) The URL of the MQTT broker.
+- `topic` (String) The topic to publish messages to.
+
+Optional:
+
+- `client_id` (String) The client ID to use when connecting to the broker.
+- `disable_resolve_message` (Boolean) Whether to disable sending resolve messages. Defaults to `false`.
+- `insecure_skip_verify` (Boolean) Whether to skip verification of the server's certificate chain and host name. Defaults to `false`.
+- `message_format` (String) The format of the message to send. Supported values are `json` and `text`.
+- `password` (String, Sensitive) The password to use when connecting to the broker.
+- `settings` (Map of String, Sensitive) Additional custom properties to attach to the notifier. Defaults to `map[]`.
+- `username` (String) The username to use when connecting to the broker.
+
+Read-Only:
+
+- `uid` (String) The UID of the contact point.
+
+
 <a id="nestedblock--oncall"></a>
 ### Nested Schema for `oncall`
 

examples/resources/grafana_contact_point/_acc_receiver_types.tf

@@ -54,6 +54,16 @@ resource "grafana_contact_point" "receiver_types" {
     description = "description"
   }
 
+  mqtt {
+    broker_url           = "tcp://localhost:1883"
+    topic                = "grafana/alerts"
+    client_id            = "client_id"
+    message_format       = "json"
+    username             = "username"
+    password             = "password"
+    insecure_skip_verify = false
+  }
+
   opsgenie {
     url               = "http://opsgenie-api"
     api_key           = "token"

internal/resources/grafana/resource_alerting_contact_point.go

@@ -28,6 +28,7 @@ var (
 		googleChatNotifier{},
 		kafkaNotifier{},
 		lineNotifier{},
+		mqttNotifier{},
 		oncallNotifier{},
 		opsGenieNotifier{},
 		pagerDutyNotifier{},

internal/resources/grafana/resource_alerting_contact_point_notifiers.go

@@ -619,6 +619,105 @@ func (o lineNotifier) unpack(raw interface{}, name string) *models.EmbeddedConta
 	}
 }
 
+type mqttNotifier struct{}
+
+var _ notifier = (*mqttNotifier)(nil)
+
+func (o mqttNotifier) meta() notifierMeta {
+	return notifierMeta{
+		field:        "mqtt",
+		typeStr:      "mqtt",
+		desc:         "A contact point that sends notifications to an MQTT broker.",
+		secureFields: []string{"password"},
+	}
+}
+
+func (o mqttNotifier) schema() *schema.Resource {
+	r := commonNotifierResource()
+	r.Schema["broker_url"] = &schema.Schema{
+		Type:        schema.TypeString,
+		Required:    true,
+		Description: "The URL of the MQTT broker.",
+	}
+	r.Schema["topic"] = &schema.Schema{
+		Type:        schema.TypeString,
+		Required:    true,
+		Description: "The topic to publish messages to.",
+	}
+	r.Schema["client_id"] = &schema.Schema{
+		Type:        schema.TypeString,
+		Optional:    true,
+		Description: "The client ID to use when connecting to the broker.",
+	}
+	r.Schema["message_format"] = &schema.Schema{
+		Type:         schema.TypeString,
+		Optional:     true,
+		ValidateFunc: validation.StringInSlice([]string{"json", "text"}, false),
+		Description:  "The format of the message to send. Supported values are `json` and `text`.",
+	}
+	r.Schema["username"] = &schema.Schema{
+		Type:        schema.TypeString,
+		Optional:    true,
+		Description: "The username to use when connecting to the broker.",
+	}
+	r.Schema["password"] = &schema.Schema{
+		Type:        schema.TypeString,
+		Optional:    true,
+		Sensitive:   true,
+		Description: "The password to use when connecting to the broker.",
+	}
+	r.Schema["insecure_skip_verify"] = &schema.Schema{
+		Type:        schema.TypeBool,
+		Optional:    true,
+		Default:     false,
+		Description: "Whether to skip verification of the server's certificate chain and host name.",
+	}
+	return r
+}
+
+func (o mqttNotifier) pack(p *models.EmbeddedContactPoint, data *schema.ResourceData) (interface{}, error) {
+	notifier := packCommonNotifierFields(p)
+	settings := p.Settings.(map[string]interface{})
+
+	packNotifierStringField(&settings, &notifier, "brokerUrl", "broker_url")
+	packNotifierStringField(&settings, &notifier, "topic", "topic")
+	packNotifierStringField(&settings, &notifier, "clientId", "client_id")
+	packNotifierStringField(&settings, &notifier, "messageFormat", "message_format")
+	packNotifierStringField(&settings, &notifier, "username", "username")
+	if v, ok := settings["insecureSkipVerify"]; ok && v != nil {
+		notifier["insecure_skip_verify"] = v.(bool)
+		delete(settings, "insecureSkipVerify")
+	}
+
+	packSecureFields(notifier, getNotifierConfigFromStateWithUID(data, o, p.UID), o.meta().secureFields)
+
+	notifier["settings"] = packSettings(p)
+	return notifier, nil
+}
+
+func (o mqttNotifier) unpack(raw interface{}, name string) *models.EmbeddedContactPoint {
+	json := raw.(map[string]interface{})
+	uid, disableResolve, settings := unpackCommonNotifierFields(json)
+
+	unpackNotifierStringField(&json, &settings, "broker_url", "brokerUrl")
+	unpackNotifierStringField(&json, &settings, "topic", "topic")
+	unpackNotifierStringField(&json, &settings, "client_id", "clientId")
+	unpackNotifierStringField(&json, &settings, "message_format", "messageFormat")
+	unpackNotifierStringField(&json, &settings, "username", "username")
+	unpackNotifierStringField(&json, &settings, "password", "password")
+	if v, ok := json["insecure_skip_verify"]; ok && v != nil {
+		settings["insecureSkipVerify"] = v.(bool)
+	}
+
+	return &models.EmbeddedContactPoint{
+		UID:                   uid,
+		Name:                  name,
+		Type:                  common.Ref(o.meta().typeStr),
+		DisableResolveMessage: disableResolve,
+		Settings:              settings,
+	}
+}
+
 type oncallNotifier struct {
 }
 

internal/resources/grafana/resource_alerting_contact_point_test.go

@@ -203,6 +203,15 @@ func TestAccContactPoint_notifiers(t *testing.T) {
 					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "line.0.token", "token"),
 					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "line.0.title", "title"),
 					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "line.0.description", "description"),
+					// mqtt
+					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "mqtt.#", "1"),
+					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "mqtt.0.broker_url", "*broker_url"),
+					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "mqtt.0.topic", "*topic"),
+					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "mqtt.0.client_id", "client_id"),
+					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "mqtt.0.message_format", "json"),
+					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "mqtt.0.username", "username"),
+					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "mqtt.0.password", "password"),
+					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "mqtt.0.insecure_skip_verify", "true"),
 					// opsgenie
 					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "opsgenie.#", "1"),
 					resource.TestCheckResourceAttr("grafana_contact_point.receiver_types", "opsgenie.0.url", "http://opsgenie-api"),