Add delete action for annotations in graphql

Update graphql schema

app/graphql/mutations/metrics/dashboard/annotations/base.rb

+# frozen_string_literal: true
+
+module Mutations
+  module Metrics
+    module Dashboard
+      module Annotations
+        class Base < BaseMutation
+          private
+
+          # This method is defined here in order to be used by `authorized_find!` in the subclasses.
+          def find_object(id:)
+            GitlabSchema.object_from_id(id)
+          end
+        end
+      end
+    end
+  end
+end

app/graphql/mutations/metrics/dashboard/annotations/delete.rb

+# frozen_string_literal: true
+
+module Mutations
+  module Metrics
+    module Dashboard
+      module Annotations
+        class Delete < Base
+          graphql_name 'DeleteAnnotation'
+
+          authorize :delete_metrics_dashboard_annotation
+
+          argument :id,
+                  GraphQL::ID_TYPE,
+                  required: true,
+                  description: 'The global id of the annotation to delete'
+
+          def resolve(id:)
+            annotation = authorized_find!(id: id)
+
+            result = ::Metrics::Dashboard::Annotations::DeleteService.new(context[:current_user], annotation).execute
+
+            errors = Array.wrap(result[:message])
+
+            {
+              errors: errors
+            }
+          end
+        end
+      end
+    end
+  end
+end

app/graphql/types/mutation_type.rb

@@ -26,6 +26,7 @@ module Types
     mount_mutation Mutations::MergeRequests::SetWip, calls_gitaly: true
     mount_mutation Mutations::MergeRequests::SetAssignees
     mount_mutation Mutations::Metrics::Dashboard::Annotations::Create
+    mount_mutation Mutations::Metrics::Dashboard::Annotations::Delete
     mount_mutation Mutations::Notes::Create::Note, calls_gitaly: true
     mount_mutation Mutations::Notes::Create::DiffNote, calls_gitaly: true
     mount_mutation Mutations::Notes::Create::ImageDiffNote, calls_gitaly: true

changelogs/unreleased/211461-destroy-annotations-graphql-endpoint.yml

+---
+title: Added delete action for Dashboard Annotations in GraphQL
+merge_request: 33468
+author:
+type: added

doc/api/graphql/reference/gitlab_schema.graphql

@@ -1725,6 +1725,36 @@ type CreateSnippetPayload {
   snippet: Snippet
 }
 
+"""
+Autogenerated input type of DeleteAnnotation
+"""
+input DeleteAnnotationInput {
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+
+  """
+  The global id of the annotation to delete
+  """
+  id: ID!
+}
+
+"""
+Autogenerated return type of DeleteAnnotation
+"""
+type DeleteAnnotationPayload {
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+
+  """
+  Errors encountered during execution of the mutation.
+  """
+  errors: [String!]!
+}
+
 """
 The response from the AdminSidekiqQueuesDeleteJobs mutation.
 """
@@ -7210,6 +7240,7 @@ type Mutation {
   createNote(input: CreateNoteInput!): CreateNotePayload
   createRequirement(input: CreateRequirementInput!): CreateRequirementPayload
   createSnippet(input: CreateSnippetInput!): CreateSnippetPayload
+  deleteAnnotation(input: DeleteAnnotationInput!): DeleteAnnotationPayload
   designManagementDelete(input: DesignManagementDeleteInput!): DesignManagementDeletePayload
   designManagementUpload(input: DesignManagementUploadInput!): DesignManagementUploadPayload
   destroyNote(input: DestroyNoteInput!): DestroyNotePayload

doc/api/graphql/reference/gitlab_schema.json

@@ -4570,6 +4570,94 @@
           "enumValues": null,
           "possibleTypes": null
         },
+        {
+          "kind": "INPUT_OBJECT",
+          "name": "DeleteAnnotationInput",
+          "description": "Autogenerated input type of DeleteAnnotation",
+          "fields": null,
+          "inputFields": [
+            {
+              "name": "id",
+              "description": "The global id of the annotation to delete",
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "SCALAR",
+                  "name": "ID",
+                  "ofType": null
+                }
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "clientMutationId",
+              "description": "A unique identifier for the client performing the mutation.",
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "defaultValue": null
+            }
+          ],
+          "interfaces": null,
+          "enumValues": null,
+          "possibleTypes": null
+        },
+        {
+          "kind": "OBJECT",
+          "name": "DeleteAnnotationPayload",
+          "description": "Autogenerated return type of DeleteAnnotation",
+          "fields": [
+            {
+              "name": "clientMutationId",
+              "description": "A unique identifier for the client performing the mutation.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "errors",
+              "description": "Errors encountered during execution of the mutation.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "LIST",
+                  "name": null,
+                  "ofType": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "SCALAR",
+                      "name": "String",
+                      "ofType": null
+                    }
+                  }
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            }
+          ],
+          "inputFields": null,
+          "interfaces": [
+
+          ],
+          "enumValues": null,
+          "possibleTypes": null
+        },
         {
           "kind": "OBJECT",
           "name": "DeleteJobsResponse",
@@ -20521,6 +20609,33 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "deleteAnnotation",
+              "description": null,
+              "args": [
+                {
+                  "name": "input",
+                  "description": null,
+                  "type": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "INPUT_OBJECT",
+                      "name": "DeleteAnnotationInput",
+                      "ofType": null
+                    }
+                  },
+                  "defaultValue": null
+                }
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "DeleteAnnotationPayload",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "designManagementDelete",
               "description": null,

doc/api/graphql/reference/index.md

@@ -305,6 +305,15 @@ Autogenerated return type of CreateSnippet
 | `errors` | String! => Array | Errors encountered during execution of the mutation. |
 | `snippet` | Snippet | The snippet after mutation |
 
+## DeleteAnnotationPayload
+
+Autogenerated return type of DeleteAnnotation
+
+| Name  | Type  | Description |
+| ---   |  ---- | ----------  |
+| `clientMutationId` | String | A unique identifier for the client performing the mutation. |
+| `errors` | String! => Array | Errors encountered during execution of the mutation. |
+
 ## DeleteJobsResponse
 
 The response from the AdminSidekiqQueuesDeleteJobs mutation.

spec/requests/api/graphql/mutations/metrics/dashboard/annotations/delete_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Mutations::Metrics::Dashboard::Annotations::Delete do
+  include GraphqlHelpers
+
+  let_it_be(:current_user) { create(:user) }
+  let_it_be(:project) { create(:project, :private, :repository) }
+  let_it_be(:environment) { create(:environment, project: project) }
+  let_it_be(:annotation) { create(:metrics_dashboard_annotation, environment: environment) }
+  let(:mutation) do
+    variables = {
+      id: GitlabSchema.id_from_object(annotation).to_s
+    }
+
+    graphql_mutation(:delete_annotation, variables)
+  end
+
+  def mutation_response
+    graphql_mutation_response(:delete_annotation)
+  end
+
+  specify { expect(described_class).to require_graphql_authorizations(:delete_metrics_dashboard_annotation) }
+
+  context 'when the user has permission to delete the annotation' do
+    before do
+      project.add_developer(current_user)
+    end
+
+    context 'with valid params' do
+      it 'deletes the annotation' do
+        expect do
+          post_graphql_mutation(mutation, current_user: current_user)
+        end.to change { Metrics::Dashboard::Annotation.count }.by(-1)
+      end
+    end
+
+    context 'with invalid params' do
+      let(:mutation) do
+        variables = {
+          id: 'invalid_id'
+        }
+
+        graphql_mutation(:delete_annotation, variables)
+      end
+
+      it_behaves_like 'a mutation that returns top-level errors', errors: ['invalid_id is not a valid GitLab id.']
+    end
+
+    context 'when the delete fails' do
+      let(:service_response) { { message: 'Annotation has not been deleted', status: :error, last_step: :delete } }
+
+      before do
+        allow_next_instance_of(Metrics::Dashboard::Annotations::DeleteService) do |delete_service|
+          allow(delete_service).to receive(:execute).and_return(service_response)
+        end
+      end
+      it 'returns the error' do
+        post_graphql_mutation(mutation, current_user: current_user)
+
+        expect(mutation_response['errors']).to eq([service_response[:message]])
+      end
+    end
+  end
+
+  context 'when the user does not have permission to delete the annotation' do
+    before do
+      project.add_reporter(current_user)
+    end
+
+    it_behaves_like 'a mutation that returns top-level errors', errors: [Gitlab::Graphql::Authorize::AuthorizeResource::RESOURCE_ACCESS_ERROR]
+
+    it 'does not delete the annotation' do
+      expect do
+        post_graphql_mutation(mutation, current_user: current_user)
+      end.not_to change { Metrics::Dashboard::Annotation.count }
+    end
+  end
+end