Cluster Agent delete mutation for GraphQl

Added cluster agent delete mutation fo graphql
Added cluster agent delete service
Updated associated tests

doc/api/graphql/reference/gitlab_schema.graphql

@@ -1655,6 +1655,41 @@ type ClusterAgent {
   updatedAt: Time
 }
 
+"""
+Autogenerated input type of ClusterAgentDelete
+"""
+input ClusterAgentDeleteInput {
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+
+  """
+  Global id of the cluster agent that will be deleted
+  """
+  id: ClustersAgentID!
+}
+
+"""
+Autogenerated return type of ClusterAgentDelete
+"""
+type ClusterAgentDeletePayload {
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+
+  """
+  Errors encountered during execution of the mutation.
+  """
+  errors: [String!]!
+}
+
+"""
+Identifier of Clusters::Agent
+"""
+scalar ClustersAgentID
+
 type Commit {
   """
   Author of the commit
@@ -9591,6 +9626,7 @@ type Mutation {
   awardEmojiToggle(input: AwardEmojiToggleInput!): AwardEmojiTogglePayload
   boardListCreate(input: BoardListCreateInput!): BoardListCreatePayload
   boardListUpdateLimitMetrics(input: BoardListUpdateLimitMetricsInput!): BoardListUpdateLimitMetricsPayload
+  clusterAgentDelete(input: ClusterAgentDeleteInput!): ClusterAgentDeletePayload
   commitCreate(input: CommitCreateInput!): CommitCreatePayload
   configureSast(input: ConfigureSastInput!): ConfigureSastPayload
   createAlertIssue(input: CreateAlertIssueInput!): CreateAlertIssuePayload

doc/api/graphql/reference/gitlab_schema.json

@@ -4518,6 +4518,104 @@
           "enumValues": null,
           "possibleTypes": null
         },
+        {
+          "kind": "INPUT_OBJECT",
+          "name": "ClusterAgentDeleteInput",
+          "description": "Autogenerated input type of ClusterAgentDelete",
+          "fields": null,
+          "inputFields": [
+            {
+              "name": "id",
+              "description": "Global id of the cluster agent that will be deleted",
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "SCALAR",
+                  "name": "ClustersAgentID",
+                  "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": "ClusterAgentDeletePayload",
+          "description": "Autogenerated return type of ClusterAgentDelete",
+          "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": "SCALAR",
+          "name": "ClustersAgentID",
+          "description": "Identifier of Clusters::Agent",
+          "fields": null,
+          "inputFields": null,
+          "interfaces": null,
+          "enumValues": null,
+          "possibleTypes": null
+        },
         {
           "kind": "OBJECT",
           "name": "Commit",
@@ -27089,6 +27187,33 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "clusterAgentDelete",
+              "description": null,
+              "args": [
+                {
+                  "name": "input",
+                  "description": null,
+                  "type": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "INPUT_OBJECT",
+                      "name": "ClusterAgentDeleteInput",
+                      "ofType": null
+                    }
+                  },
+                  "defaultValue": null
+                }
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "ClusterAgentDeletePayload",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "commitCreate",
               "description": null,

doc/api/graphql/reference/index.md

@@ -274,6 +274,15 @@ Autogenerated return type of BoardListUpdateLimitMetrics
 | `project` | Project | The project this cluster agent is associated with |
 | `updatedAt` | Time | Timestamp the cluster agent was updated |
 
+## ClusterAgentDeletePayload
+
+Autogenerated return type of ClusterAgentDelete
+
+| Name  | Type  | Description |
+| ---   |  ---- | ----------  |
+| `clientMutationId` | String | A unique identifier for the client performing the mutation. |
+| `errors` | String! => Array | Errors encountered during execution of the mutation. |
+
 ## Commit
 
 | Name  | Type  | Description |

ee/app/graphql/ee/types/mutation_type.rb

@@ -7,6 +7,7 @@ module EE
 
       prepended do
         mount_mutation ::Mutations::Clusters::Agents::Create
+        mount_mutation ::Mutations::Clusters::Agents::Delete
         mount_mutation ::Mutations::Issues::SetIteration
         mount_mutation ::Mutations::Issues::SetWeight
         mount_mutation ::Mutations::Issues::SetEpic

ee/app/graphql/mutations/clusters/agents/delete.rb

+# frozen_string_literal: true
+
+module Mutations
+  module Clusters
+    module Agents
+      class Delete < BaseMutation
+        graphql_name 'ClusterAgentDelete'
+
+        authorize :admin_cluster
+
+        argument :id,
+                 ::Types::GlobalIDType[::Clusters::Agent],
+                 required: true,
+                 description: 'Global id of the cluster agent that will be deleted'
+
+        def resolve(id:)
+          cluster_agent = authorized_find!(id: id)
+          result = ::Clusters::Agents::DeleteService
+            .new(container: cluster_agent.project, current_user: current_user)
+            .execute(cluster_agent)
+
+          {
+            errors: Array.wrap(result.message)
+          }
+        end
+
+        private
+
+        def find_object(id:)
+          GitlabSchema.find_by_gid(id)
+        end
+      end
+    end
+  end
+end

ee/app/services/clusters/agents/delete_service.rb

+# frozen_string_literal: true
+
+module Clusters
+  module Agents
+    class DeleteService < ::BaseContainerService
+      def execute(cluster_agent)
+        return error_no_permissions unless current_user.can?(:admin_cluster, cluster_agent)
+
+        if cluster_agent.destroy
+          ServiceResponse.success
+        else
+          ServiceResponse.error(message: cluster_agent.errors.full_messages)
+        end
+      end
+
+      private
+
+      def error_no_permissions
+        ServiceResponse.error(message: s_('ClusterAgent|You have insufficient permissions to delete this cluster agent'))
+      end
+    end
+  end
+end

ee/changelogs/unreleased/emilyring-agent-graphql-delete.yml

+---
+title: Added Cluster Agent delete mutation for GraphQl
+merge_request: 38622
+author:
+type: changed

ee/spec/graphql/mutations/clusters/agents/delete_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Clusters::Agents::Delete do
+  subject(:mutation) { described_class.new(object: nil, context: context, field: nil) }
+
+  let(:cluster_agent) { create(:cluster_agent) }
+  let(:project) { cluster_agent.project }
+  let(:user) { create(:user) }
+  let(:context) do
+    GraphQL::Query::Context.new(
+      query: OpenStruct.new(schema: nil),
+      values: { current_user: user },
+      object: nil
+    )
+  end
+
+  specify { expect(described_class).to require_graphql_authorizations(:admin_cluster) }
+
+  describe '#resolve' do
+    subject { mutation.resolve(id: cluster_agent.to_global_id) }
+
+    context 'without user permissions' do
+      it 'fails to delete the cluster agent', :aggregate_failures do
+        expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+        expect { cluster_agent.reload }.not_to raise_error(ActiveRecord::RecordNotFound)
+      end
+    end
+
+    context 'with user permissions' do
+      before do
+        project.add_maintainer(user)
+      end
+
+      it 'deletes a cluster agent', :aggregate_failures do
+        expect { subject }.to change { ::Clusters::Agent.count }.by(-1)
+        expect { cluster_agent.reload }.to raise_error(ActiveRecord::RecordNotFound)
+      end
+    end
+
+    context 'with invalid params' do
+      subject { mutation.resolve(id: cluster_agent.id) }
+
+      it 'raises an error if the cluster agent id is invalid', :aggregate_failures do
+        expect { subject }.to raise_error(NoMethodError)
+        expect { cluster_agent.reload }.not_to raise_error(ActiveRecord::RecordNotFound)
+      end
+    end
+  end
+end

ee/spec/requests/api/graphql/mutations/clusters/agents/delete_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Delete a cluster agent' do
+  include GraphqlHelpers
+
+  let(:cluster_agent) { create(:cluster_agent) }
+  let(:project) { cluster_agent.project }
+  let(:current_user) { create(:user) }
+
+  let(:mutation) do
+    graphql_mutation(
+      :cluster_agent_delete,
+      { id: cluster_agent.to_global_id.uri }
+    )
+  end
+
+  def mutation_response
+    graphql_mutation_response(:cluster_agent_delete)
+  end
+
+  context 'without project permissions' do
+    it_behaves_like 'a mutation that returns top-level errors',
+                    errors: ['The resource that you are attempting to access does not exist '\
+               'or you don\'t have permission to perform this action']
+
+    it 'does not delete cluster agent' do
+      expect { cluster_agent.reload }.not_to raise_error(ActiveRecord::RecordNotFound)
+    end
+  end
+
+  context 'with premium plan and project permissions' do
+    before do
+      allow(License).to receive(:current).and_return(create(:license, plan: ::License::PREMIUM_PLAN))
+      project.add_maintainer(current_user)
+    end
+
+    it 'deletes a cluster agent', :aggregate_failures do
+      expect { post_graphql_mutation(mutation, current_user: current_user) }.to change { Clusters::Agent.count }.by(-1)
+      expect(mutation_response['errors']).to eq([])
+    end
+  end
+end

ee/spec/services/clusters/agents/delete_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Clusters::Agents::DeleteService do
+  subject(:service) { described_class.new(container: project, current_user: user) }
+
+  let(:cluster_agent) { create(:cluster_agent) }
+  let(:project) { cluster_agent.project }
+  let(:user) { create(:user) }
+
+  describe '#execute' do
+    context 'without user permissions' do
+      it 'fails to delete when the user has no permissions', :aggregate_failures do
+        response = service.execute(cluster_agent)
+
+        expect(response.status).to eq(:error)
+        expect(response.message).to eq('You have insufficient permissions to delete this cluster agent')
+
+        expect { cluster_agent.reload }.not_to raise_error(ActiveRecord::RecordNotFound)
+      end
+    end
+
+    context 'with user permissions' do
+      before do
+        project.add_maintainer(user)
+      end
+
+      it 'deletes a cluster agent', :aggregate_failures do
+        expect { service.execute(cluster_agent) }.to change { ::Clusters::Agent.count }.by(-1)
+        expect { cluster_agent.reload }.to raise_error(ActiveRecord::RecordNotFound)
+      end
+    end
+  end
+end

locale/gitlab.pot

@@ -5114,6 +5114,9 @@ msgstr ""
 msgid "ClusterAgent|You have insufficient permissions to create a cluster agent for this project"
 msgstr ""
 
+msgid "ClusterAgent|You have insufficient permissions to delete this cluster agent"
+msgstr ""
+
 msgid "ClusterIntegration|%{appList} was successfully installed on your Kubernetes cluster"
 msgstr ""