Alerting: Endpoints for provisioning mute timings (#49635) (#49735)

* Add validator for mute timing and make it provisionable

* Add tests to ensure prometheus validators are running and errors are propagated

* Internal API for manipulating mute timings

* Define and generate API layer

* Wire up generated code

* Implement API handlers

* Tests for golang layer

* Fix reference bug

* Fix linter and auth tests

* Resolve semantic errors and regenerate

* Remove pointless comment

* Extract out provisioning path param keys, simplify

* Expected number of paths

(cherry picked from commit 909ebcf979)

Co-authored-by: Alexander Weaver <weaver.alex.d@gmail.com>

pkg/services/ngalert/api/tooling/post.json

@@ -1439,26 +1439,9 @@
    "type": "object",
    "x-go-package": "github.com/prometheus/alertmanager/config"
   },
-  "MuteTiming": {
-   "properties": {
-    "name": {
-     "type": "string",
-     "x-go-name": "Name"
-    },
-    "time_intervals": {
-     "items": {
-      "$ref": "#/definitions/TimeInterval"
-     },
-     "type": "array",
-     "x-go-name": "TimeIntervals"
-    }
-   },
-   "type": "object",
-   "x-go-package": "github.com/grafana/grafana/pkg/services/ngalert/api/tooling/definitions"
-  },
   "MuteTimings": {
    "items": {
-    "$ref": "#/definitions/MuteTiming"
+    "$ref": "#/definitions/MuteTimeInterval"
    },
    "type": "array",
    "x-go-package": "github.com/grafana/grafana/pkg/services/ngalert/api/tooling/definitions"
@@ -3196,11 +3179,12 @@
    "type": "object"
   },
   "alertGroups": {
-   "description": "AlertGroups alert groups",
    "items": {
     "$ref": "#/definitions/alertGroup"
    },
-   "type": "array"
+   "type": "array",
+   "x-go-name": "AlertGroups",
+   "x-go-package": "github.com/prometheus/alertmanager/api/v2/models"
   },
   "alertStatus": {
    "description": "AlertStatus alert status",
@@ -3445,11 +3429,12 @@
    "type": "object"
   },
   "gettableSilences": {
-   "description": "GettableSilences gettable silences",
    "items": {
     "$ref": "#/definitions/gettableSilence"
    },
-   "type": "array"
+   "type": "array",
+   "x-go-name": "GettableSilences",
+   "x-go-package": "github.com/prometheus/alertmanager/api/v2/models"
   },
   "labelSet": {
    "additionalProperties": {
@@ -5005,9 +4990,67 @@
     "tags": [
      "provisioning"
     ]
+   },
+   "post": {
+    "consumes": [
+     "application/json"
+    ],
+    "operationId": "RoutePostMuteTiming",
+    "parameters": [
+     {
+      "in": "body",
+      "name": "Body",
+      "schema": {
+       "$ref": "#/definitions/MuteTimeInterval"
+      }
+     }
+    ],
+    "responses": {
+     "201": {
+      "description": "MuteTimeInterval",
+      "schema": {
+       "$ref": "#/definitions/MuteTimeInterval"
+      }
+     },
+     "400": {
+      "description": "ValidationError",
+      "schema": {
+       "$ref": "#/definitions/ValidationError"
+      }
+     }
+    },
+    "summary": "Create a new mute timing.",
+    "tags": [
+     "provisioning"
+    ]
    }
   },
   "/api/provisioning/mute-timings/{name}": {
+   "delete": {
+    "operationId": "RouteDeleteMuteTiming",
+    "parameters": [
+     {
+      "description": "Template Name",
+      "in": "path",
+      "name": "name",
+      "required": true,
+      "type": "string",
+      "x-go-name": "Name"
+     }
+    ],
+    "responses": {
+     "204": {
+      "description": "Ack",
+      "schema": {
+       "$ref": "#/definitions/Ack"
+      }
+     }
+    },
+    "summary": "Delete a mute timing.",
+    "tags": [
+     "provisioning"
+    ]
+   },
    "get": {
     "operationId": "RouteGetMuteTiming",
     "parameters": [
@@ -5022,9 +5065,9 @@
     ],
     "responses": {
      "200": {
-      "description": "MuteTiming",
+      "description": "MuteTimeInterval",
       "schema": {
-       "$ref": "#/definitions/MuteTiming"
+       "$ref": "#/definitions/MuteTimeInterval"
       }
      },
      "400": {
@@ -5038,6 +5081,47 @@
     "tags": [
      "provisioning"
     ]
+   },
+   "put": {
+    "consumes": [
+     "application/json"
+    ],
+    "operationId": "RoutePutMuteTiming",
+    "parameters": [
+     {
+      "description": "Template Name",
+      "in": "path",
+      "name": "name",
+      "required": true,
+      "type": "string",
+      "x-go-name": "Name"
+     },
+     {
+      "in": "body",
+      "name": "Body",
+      "schema": {
+       "$ref": "#/definitions/MuteTimeInterval"
+      }
+     }
+    ],
+    "responses": {
+     "200": {
+      "description": "MuteTimeInterval",
+      "schema": {
+       "$ref": "#/definitions/MuteTimeInterval"
+      }
+     },
+     "400": {
+      "description": "ValidationError",
+      "schema": {
+       "$ref": "#/definitions/ValidationError"
+      }
+     }
+    },
+    "summary": "Replace an existing mute timing.",
+    "tags": [
+     "provisioning"
+    ]
    }
   },
   "/api/provisioning/policies": {