Add project environments graphql endpoint

Add id and name environment fields

Add search by name for environment

app/graphql/resolvers/environments_resolver.rb

+# frozen_string_literal: true
+
+module Resolvers
+  class EnvironmentsResolver < BaseResolver
+    argument :name, GraphQL::STRING_TYPE,
+              required: false,
+              description: 'Name of the environment'
+
+    argument :search, GraphQL::STRING_TYPE,
+              required: false,
+              description: 'Search query'
+
+    type Types::EnvironmentType, null: true
+
+    alias_method :project, :object
+
+    def resolve(**args)
+      return unless project.present?
+
+      EnvironmentsFinder.new(project, context[:current_user], args).find
+    end
+  end
+end

app/graphql/types/environment_type.rb

+# frozen_string_literal: true
+
+module Types
+  class EnvironmentType < BaseObject
+    graphql_name 'Environment'
+    description 'Describes where code is deployed for a project'
+
+    authorize :read_environment
+
+    field :name, GraphQL::STRING_TYPE, null: false,
+          description: 'Human-readable name of the environment'
+
+    field :id, GraphQL::ID_TYPE, null: false,
+          description: 'ID of the environment'
+  end
+end

app/graphql/types/project_type.rb

@@ -138,6 +138,12 @@ module Types
           description: 'Issues of the project',
           resolver: Resolvers::IssuesResolver
 
+    field :environments,
+          Types::EnvironmentType.connection_type,
+          null: true,
+          description: 'Environments of the project',
+          resolver: Resolvers::EnvironmentsResolver
+
     field :issue,
           Types::IssueType,
           null: true,

changelogs/unreleased/environment-name-search-graphql.yml

+---
+title: Get Project's environment names via GraphQL
+merge_request: 22932
+author:
+type: added

doc/api/graphql/reference/gitlab_schema.graphql

@@ -1412,6 +1412,56 @@ enum EntryType {
   tree
 }
 
+"""
+Describes where code is deployed for a project
+"""
+type Environment {
+  """
+  ID of the environment
+  """
+  id: ID!
+
+  """
+  Human-readable name of the environment
+  """
+  name: String!
+}
+
+"""
+The connection type for Environment.
+"""
+type EnvironmentConnection {
+  """
+  A list of edges.
+  """
+  edges: [EnvironmentEdge]
+
+  """
+  A list of nodes.
+  """
+  nodes: [Environment]
+
+  """
+  Information to aid in pagination.
+  """
+  pageInfo: PageInfo!
+}
+
+"""
+An edge in a connection.
+"""
+type EnvironmentEdge {
+  """
+  A cursor for use in pagination.
+  """
+  cursor: String!
+
+  """
+  The item at the end of the edge.
+  """
+  node: Environment
+}
+
 """
 Represents an epic.
 """
@@ -4706,6 +4756,41 @@ type Project {
   """
   descriptionHtml: String
 
+  """
+  Environments of the project
+  """
+  environments(
+    """
+    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
+
+    """
+    Name of the environment
+    """
+    name: String
+
+    """
+    Search query
+    """
+    search: String
+  ): EnvironmentConnection
+
   """
   Number of times the project has been forked
   """

doc/api/graphql/reference/gitlab_schema.json

@@ -406,6 +406,79 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "environments",
+              "description": "Environments of the project",
+              "args": [
+                {
+                  "name": "name",
+                  "description": "Name of the environment",
+                  "type": {
+                    "kind": "SCALAR",
+                    "name": "String",
+                    "ofType": null
+                  },
+                  "defaultValue": null
+                },
+                {
+                  "name": "search",
+                  "description": "Search query",
+                  "type": {
+                    "kind": "SCALAR",
+                    "name": "String",
+                    "ofType": null
+                  },
+                  "defaultValue": null
+                },
+                {
+                  "name": "after",
+                  "description": "Returns the elements in the list that come after the specified cursor.",
+                  "type": {
+                    "kind": "SCALAR",
+                    "name": "String",
+                    "ofType": null
+                  },
+                  "defaultValue": null
+                },
+                {
+                  "name": "before",
+                  "description": "Returns the elements in the list that come before the specified cursor.",
+                  "type": {
+                    "kind": "SCALAR",
+                    "name": "String",
+                    "ofType": null
+                  },
+                  "defaultValue": null
+                },
+                {
+                  "name": "first",
+                  "description": "Returns the first _n_ elements from the list.",
+                  "type": {
+                    "kind": "SCALAR",
+                    "name": "Int",
+                    "ofType": null
+                  },
+                  "defaultValue": null
+                },
+                {
+                  "name": "last",
+                  "description": "Returns the last _n_ elements from the list.",
+                  "type": {
+                    "kind": "SCALAR",
+                    "name": "Int",
+                    "ofType": null
+                  },
+                  "defaultValue": null
+                }
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "EnvironmentConnection",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "forksCount",
               "description": "Number of times the project has been forked",
@@ -15431,6 +15504,167 @@
           ],
           "possibleTypes": null
         },
+        {
+          "kind": "OBJECT",
+          "name": "EnvironmentConnection",
+          "description": "The connection type for Environment.",
+          "fields": [
+            {
+              "name": "edges",
+              "description": "A list of edges.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "LIST",
+                "name": null,
+                "ofType": {
+                  "kind": "OBJECT",
+                  "name": "EnvironmentEdge",
+                  "ofType": null
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "nodes",
+              "description": "A list of nodes.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "LIST",
+                "name": null,
+                "ofType": {
+                  "kind": "OBJECT",
+                  "name": "Environment",
+                  "ofType": null
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "pageInfo",
+              "description": "Information to aid in pagination.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "OBJECT",
+                  "name": "PageInfo",
+                  "ofType": null
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            }
+          ],
+          "inputFields": null,
+          "interfaces": [
+
+          ],
+          "enumValues": null,
+          "possibleTypes": null
+        },
+        {
+          "kind": "OBJECT",
+          "name": "EnvironmentEdge",
+          "description": "An edge in a connection.",
+          "fields": [
+            {
+              "name": "cursor",
+              "description": "A cursor for use in pagination.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "SCALAR",
+                  "name": "String",
+                  "ofType": null
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "node",
+              "description": "The item at the end of the edge.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "Environment",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            }
+          ],
+          "inputFields": null,
+          "interfaces": [
+
+          ],
+          "enumValues": null,
+          "possibleTypes": null
+        },
+        {
+          "kind": "OBJECT",
+          "name": "Environment",
+          "description": "Describes where code is deployed for a project",
+          "fields": [
+            {
+              "name": "id",
+              "description": "ID of the environment",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "SCALAR",
+                  "name": "ID",
+                  "ofType": null
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "name",
+              "description": "Human-readable name of the environment",
+              "args": [
+
+              ],
+              "type": {
+                "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": "SentryDetailedError",

doc/api/graphql/reference/index.md

@@ -232,6 +232,15 @@ Autogenerated return type of DestroySnippet
 | `replyId` | ID! | ID used to reply to this discussion |
 | `createdAt` | Time! | Timestamp of the discussion's creation |
 
+## Environment
+
+Describes where code is deployed for a project
+
+| Name  | Type  | Description |
+| ---   |  ---- | ----------  |
+| `name` | String! | Human-readable name of the environment |
+| `id` | ID! | ID of the environment |
+
 ## Epic
 
 Represents an epic.

ee/spec/graphql/resolvers/environments_resolver_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Resolvers::EnvironmentsResolver do
+  include GraphqlHelpers
+
+  let_it_be(:current_user) { create(:user) }
+
+  context "with a group" do
+    let(:group)   { create(:group) }
+    let(:project) { create(:project, :public, group: group) }
+    let!(:environment1) { create(:environment, name: 'production', project: project) }
+    let!(:environment2) { create(:environment, name: 'test', project: project) }
+    let!(:environment3) { create(:environment, name: 'test2', project: project) }
+
+    before do
+      group.add_developer(current_user)
+    end
+
+    describe '#resolve' do
+      it 'finds all environments' do
+        expect(resolve_environments).to contain_exactly(environment1, environment2, environment3)
+      end
+
+      context 'with name' do
+        it 'finds a specific environment with name' do
+          expect(resolve_environments(name: environment1.name)).to contain_exactly(environment1)
+        end
+      end
+
+      context 'with search' do
+        it 'searches environment by name' do
+          expect(resolve_environments(search: 'test')).to contain_exactly(environment2, environment3)
+        end
+
+        context 'when the search term does not match any environments' do
+          it 'is empty' do
+            expect(resolve_environments(search: 'nonsense')).to be_empty
+          end
+        end
+      end
+
+      context 'when project is nil' do
+        subject { resolve(described_class, obj: nil, args: {}, ctx: { current_user: current_user }) }
+
+        it { is_expected.to be_nil }
+      end
+    end
+  end
+
+  def resolve_environments(args = {}, context = { current_user: current_user })
+    resolve(described_class, obj: project, args: args, ctx: context)
+  end
+end

spec/graphql/types/environment_type_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe GitlabSchema.types['Environment'] do
+  it { expect(described_class.graphql_name).to eq('Environment') }
+
+  it 'has the expected fields' do
+    expected_fields = %w[
+      name id
+    ]
+
+    is_expected.to have_graphql_fields(*expected_fields)
+  end
+
+  it { is_expected.to require_graphql_authorizations(:read_environment) }
+end

spec/graphql/types/project_type_spec.rb

@@ -23,7 +23,7 @@ describe GitlabSchema.types['Project'] do
       only_allow_merge_if_all_discussions_are_resolved printing_merge_request_link_enabled
       namespace group statistics repository merge_requests merge_request issues
       issue pipelines removeSourceBranchAfterMerge sentryDetailedError snippets
-      grafanaIntegration autocloseReferencedIssues suggestion_commit_message
+      grafanaIntegration autocloseReferencedIssues suggestion_commit_message environments
     ]
 
     is_expected.to include_graphql_fields(*expected_fields)
@@ -70,4 +70,11 @@ describe GitlabSchema.types['Project'] do
     it { is_expected.to have_graphql_type(Types::GrafanaIntegrationType) }
     it { is_expected.to have_graphql_resolver(Resolvers::Projects::GrafanaIntegrationResolver) }
   end
+
+  describe 'environments field' do
+    subject { described_class.fields['environments'] }
+
+    it { is_expected.to have_graphql_type(Types::EnvironmentType.connection_type) }
+    it { is_expected.to have_graphql_resolver(Resolvers::EnvironmentsResolver) }
+  end
 end