[monitoring] Type annotations for slack alerts

Signed-off-by: Timofei Larkin <lllamnyp@gmail.com>

packages/extra/monitoring/README.md

@@ -72,6 +72,8 @@
 | `alerta.alerts.telegram.token`            | Telegram token for your bot                                                         | `string`    | `""`    |
 | `alerta.alerts.telegram.chatID`           | Specify multiple ID's separated by comma. Get yours in https://t.me/chatid_echo_bot | `string`    | `""`    |
 | `alerta.alerts.telegram.disabledSeverity` | List of severity without alerts, separated by comma like: "informational,warning"   | `string`    | `""`    |
+| `alerta.alerts.slack`                     | Configuration for Telegram alerts                                                   | `*object`   | `null`  |
+| `alerta.alerts.slack.url`                 | Slack webhook URL                                                                   | `string`    | `""`    |
 
 
 ### Grafana configuration

packages/extra/monitoring/templates/alerta/alerta.yaml

@@ -122,6 +122,13 @@ spec:
               value: "{{ .Values.alerta.alerts.telegram.disabledSeverity }}"
             {{- end }}
 
+            {{- if .Values.alerta.alerts.slack.url }}
+            - name: "PLUGINS"
+              value: "slack"
+            - name: "SLACK_WEBHOOK_URL"
+              value: "{{ .Values.alerta.alerts.slack.url }}"
+            {{- end }}
+
           ports:
             - name: http
               containerPort: 8080

packages/extra/monitoring/values.schema.json

@@ -12,6 +12,20 @@
           "type": "object",
           "default": {},
           "properties": {
+            "slack": {
+              "description": "Configuration for Telegram alerts",
+              "type": "object",
+              "default": {},
+              "required": [
+                "url"
+              ],
+              "properties": {
+                "url": {
+                  "description": "Slack webhook URL",
+                  "type": "string"
+                }
+              }
+            },
             "telegram": {
               "description": "Configuration for Telegram alerts",
               "type": "object",

packages/extra/monitoring/values.yaml

@@ -87,9 +87,11 @@ logsStorages:
 ## @field alerta.resources {*resources} Resources configuration
 ## @field alerta.alerts {*alerts} Configuration for alerts
 ## @field alerts.telegram {*telegramAlerts} Configuration for Telegram alerts
+## @field alerts.slack {*slackAlerts} Configuration for Telegram alerts
 ## @field telegramAlerts.token {string} Telegram token for your bot
 ## @field telegramAlerts.chatID {string} Specify multiple ID's separated by comma. Get yours in https://t.me/chatid_echo_bot
 ## @field telegramAlerts.disabledSeverity {string} List of severity without alerts, separated by comma like: "informational,warning"
+## @field slackAlerts.url {string} Slack webhook URL
 alerta:
   storage: 10Gi
   storageClassName: ""
@@ -112,6 +114,9 @@ alerta:
       chatID: ""
       disabledSeverity: ""
 
+    slack:
+      url: ""
+
 ## @section Grafana configuration
 
 ## @param grafana {grafana} Configuration for Grafana