Add RunnerPlatforms GraphQL Resolver

Adds RunnerPlatforms GraphQL resolver which lists all supported runner
platforms and architectures.

app/graphql/resolvers/ci/runner_platforms_resolver.rb

+# frozen_string_literal: true
+
+module Resolvers
+  module Ci
+    class RunnerPlatformsResolver < BaseResolver
+      type Types::Ci::RunnerPlatformType, null: false
+
+      def resolve(**args)
+        runner_instructions.map do |platform, data|
+          {
+            name: platform, human_readable_name: data[:human_readable_name],
+            architectures: parse_architectures(data[:download_locations])
+          }
+        end
+      end
+
+      private
+
+      def runner_instructions
+        Gitlab::Ci::RunnerInstructions::OS.merge(Gitlab::Ci::RunnerInstructions::OTHER_ENVIRONMENTS)
+      end
+
+      def parse_architectures(download_locations)
+        download_locations&.map do |architecture, download_location|
+          { name: architecture, download_location: download_location }
+        end
+      end
+    end
+  end
+end

app/graphql/types/ci/runner_architecture_type.rb

+# frozen_string_literal: true
+
+module Types
+  module Ci
+    # rubocop: disable Graphql/AuthorizeTypes
+    class RunnerArchitectureType < BaseObject
+      graphql_name 'RunnerArchitecture'
+
+      field :name, GraphQL::STRING_TYPE, null: false,
+        description: 'Name of the runner platform architecture'
+      field :download_location, GraphQL::STRING_TYPE, null: false,
+        description: 'Download location for the runner for the platform architecture'
+    end
+  end
+end

app/graphql/types/ci/runner_platform_type.rb

+# frozen_string_literal: true
+
+module Types
+  module Ci
+    # rubocop: disable Graphql/AuthorizeTypes
+    class RunnerPlatformType < BaseObject
+      graphql_name 'RunnerPlatform'
+
+      field :name, GraphQL::STRING_TYPE, null: false,
+        description: 'Name slug of the runner platform'
+      field :human_readable_name, GraphQL::STRING_TYPE, null: false,
+        description: 'Human readable name of the runner platform'
+      field :architectures, Types::Ci::RunnerArchitectureType.connection_type, null: true,
+        description: 'Runner architectures supported for the platform'
+    end
+  end
+end

app/graphql/types/query_type.rb

@@ -80,6 +80,10 @@ module Types
           description: 'Get statistics on the instance',
           resolver: Resolvers::Admin::Analytics::InstanceStatistics::MeasurementsResolver
 
+    field :runner_platforms, Types::Ci::RunnerPlatformType.connection_type,
+      null: true, description: 'Supported runner platforms',
+      resolver: Resolvers::Ci::RunnerPlatformsResolver
+
     def design_management
       DesignManagementObject.new(nil)
     end

doc/api/graphql/reference/gitlab_schema.graphql

@@ -15264,6 +15264,31 @@ type Query {
     sort: String
   ): ProjectConnection
 
+  """
+  Supported runner platforms
+  """
+  runnerPlatforms(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): RunnerPlatformConnection
+
   """
   Find Snippets visible to the current user
   """
@@ -16438,6 +16463,125 @@ type RunDASTScanPayload {
   pipelineUrl: String
 }
 
+type RunnerArchitecture {
+  """
+  Download location for the runner for the platform architecture
+  """
+  downloadLocation: String!
+
+  """
+  Name of the runner platform architecture
+  """
+  name: String!
+}
+
+"""
+The connection type for RunnerArchitecture.
+"""
+type RunnerArchitectureConnection {
+  """
+  A list of edges.
+  """
+  edges: [RunnerArchitectureEdge]
+
+  """
+  A list of nodes.
+  """
+  nodes: [RunnerArchitecture]
+
+  """
+  Information to aid in pagination.
+  """
+  pageInfo: PageInfo!
+}
+
+"""
+An edge in a connection.
+"""
+type RunnerArchitectureEdge {
+  """
+  A cursor for use in pagination.
+  """
+  cursor: String!
+
+  """
+  The item at the end of the edge.
+  """
+  node: RunnerArchitecture
+}
+
+type RunnerPlatform {
+  """
+  Runner architectures supported for the platform
+  """
+  architectures(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): RunnerArchitectureConnection
+
+  """
+  Human readable name of the runner platform
+  """
+  humanReadableName: String!
+
+  """
+  Name slug of the runner platform
+  """
+  name: String!
+}
+
+"""
+The connection type for RunnerPlatform.
+"""
+type RunnerPlatformConnection {
+  """
+  A list of edges.
+  """
+  edges: [RunnerPlatformEdge]
+
+  """
+  A list of nodes.
+  """
+  nodes: [RunnerPlatform]
+
+  """
+  Information to aid in pagination.
+  """
+  pageInfo: PageInfo!
+}
+
+"""
+An edge in a connection.
+"""
+type RunnerPlatformEdge {
+  """
+  A cursor for use in pagination.
+  """
+  cursor: String!
+
+  """
+  The item at the end of the edge.
+  """
+  node: RunnerPlatform
+}
+
 """
 Represents a CI configuration of SAST
 """

doc/api/graphql/reference/index.md

@@ -2227,6 +2227,20 @@ Autogenerated return type of RunDASTScan.
 | `errors` | String! => Array | Errors encountered during execution of the mutation. |
 | `pipelineUrl` | String | URL of the pipeline that was created. |
 
+### RunnerArchitecture
+
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `downloadLocation` | String! | Download location for the runner for the platform architecture |
+| `name` | String! | Name of the runner platform architecture |
+
+### RunnerPlatform
+
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `humanReadableName` | String! | Human readable name of the runner platform |
+| `name` | String! | Name slug of the runner platform |
+
 ### SastCiConfigurationAnalyzersEntity
 
 Represents an analyzer entity in SAST CI configuration.

spec/graphql/resolvers/ci/runner_platforms_resolver_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Resolvers::Ci::RunnerPlatformsResolver do
+  include GraphqlHelpers
+
+  describe '#resolve' do
+    subject(:resolve_subject) { resolve(described_class) }
+
+    it 'returns all possible runner platforms' do
+      expect(resolve_subject).to include(
+        hash_including(name: :linux), hash_including(name: :osx),
+        hash_including(name: :windows), hash_including(name: :docker),
+        hash_including(name: :kubernetes)
+      )
+    end
+  end
+end

spec/graphql/types/ci/runner_architecture_type_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Types::Ci::RunnerArchitectureType do
+  specify { expect(described_class.graphql_name).to eq('RunnerArchitecture') }
+
+  it 'exposes the expected fields' do
+    expected_fields = %i[
+    name
+    download_location
+    ]
+
+    expect(described_class).to have_graphql_fields(*expected_fields)
+  end
+end

spec/graphql/types/ci/runner_platform_type_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Types::Ci::RunnerPlatformType do
+  specify { expect(described_class.graphql_name).to eq('RunnerPlatform') }
+
+  it 'exposes the expected fields' do
+    expected_fields = %i[
+    name
+    human_readable_name
+    architectures
+    ]
+
+    expect(described_class).to have_graphql_fields(*expected_fields)
+  end
+end

spec/graphql/types/query_type_spec.rb

@@ -22,6 +22,7 @@ RSpec.describe GitlabSchema.types['Query'] do
       users
       issue
       instance_statistics_measurements
+      runner_platforms
     ]
 
     expect(described_class).to have_graphql_fields(*expected_fields).at_least
@@ -67,8 +68,16 @@ RSpec.describe GitlabSchema.types['Query'] do
   describe 'instance_statistics_measurements field' do
     subject { described_class.fields['instanceStatisticsMeasurements'] }
 
-    it 'returns issue' do
+    it 'returns instance statistics measurements' do
       is_expected.to have_graphql_type(Types::Admin::Analytics::InstanceStatistics::MeasurementType.connection_type)
     end
   end
+
+  describe 'runner_platforms field' do
+    subject { described_class.fields['runnerPlatforms'] }
+
+    it 'returns runner platforms' do
+      is_expected.to have_graphql_type(Types::Ci::RunnerPlatformType.connection_type)
+    end
+  end
 end