Merge branch '25680-CI_ENVIRONMENT_URL' into 'master'

Add `$CI_ENVIRONMENT_URL` as a job variable

Closes #25680

See merge request !11695

app/models/ci/build.rb

@@ -138,6 +138,17 @@ module Ci
       ExpandVariables.expand(environment, simple_variables) if environment
     end
 
+    def environment_url
+      return @environment_url if defined?(@environment_url)
+
+      @environment_url =
+        if unexpanded_url = options&.dig(:environment, :url)
+          ExpandVariables.expand(unexpanded_url, simple_variables)
+        else
+          persisted_environment&.external_url
+        end
+    end
+
     def has_environment?
       environment.present?
     end
@@ -198,9 +209,7 @@ module Ci
 
     # All variables, including those dependent on other variables
     def variables
-      variables = simple_variables
-      variables += persisted_environment.predefined_variables if persisted_environment.present?
-      variables
+      simple_variables.concat(persisted_environment_variables)
     end
 
     def merge_request
@@ -462,6 +471,18 @@ module Ci
       variables.concat(legacy_variables)
     end
 
+    def persisted_environment_variables
+      return [] unless persisted_environment
+
+      variables = persisted_environment.predefined_variables
+
+      if url = environment_url
+        variables << { key: 'CI_ENVIRONMENT_URL', value: url, public: true }
+      end
+
+      variables
+    end
+
     def legacy_variables
       variables = [
         { key: 'CI_BUILD_ID', value: id.to_s, public: true },

app/services/create_deployment_service.rb

-class CreateDeploymentService < BaseService
-  def execute(deployable = nil)
+class CreateDeploymentService
+  attr_reader :job
+
+  delegate :expanded_environment_name,
+           :environment_url,
+           :project,
+           to: :job
+
+  def initialize(job)
+    @job = job
+  end
+
+  def execute
     return unless executable?
 
     ActiveRecord::Base.transaction do
-      @deployable = deployable
+      environment.external_url = environment_url if environment_url
+      environment.fire_state_event(action)
 
-      @environment = environment
-      @environment.external_url = expanded_url if expanded_url
-      @environment.fire_state_event(action)
+      return unless environment.save
+      return if environment.stopped?
 
-      return unless @environment.save
-      return if @environment.stopped?
-
-      deploy.tap do |deployment|
-        deployment.update_merge_request_metrics!
-      end
+      deploy.tap(&:update_merge_request_metrics!)
     end
   end
 
   private
 
   def executable?
-    project && name.present?
+    project && job.environment.present? && environment
   end
 
   def deploy
     project.deployments.create(
-      environment: @environment,
-      ref: params[:ref],
-      tag: params[:tag],
-      sha: params[:sha],
-      user: current_user,
-      deployable: @deployable,
-      on_stop: options[:on_stop])
+      environment: environment,
+      ref: job.ref,
+      tag: job.tag,
+      sha: job.sha,
+      user: job.user,
+      deployable: job,
+      on_stop: on_stop)
   end
 
   def environment
-    @environment ||= project.environments.find_or_create_by(name: expanded_name)
-  end
-
-  def expanded_name
-    ExpandVariables.expand(name, variables)
-  end
-
-  def expanded_url
-    return unless url
-
-    @expanded_url ||= ExpandVariables.expand(url, variables)
-  end
-
-  def name
-    params[:environment]
-  end
-
-  def url
-    options[:url]
+    @environment ||= job.persisted_environment
   end
 
-  def options
-    params[:options] || {}
+  def environment_options
+    @environment_options ||= job.options&.dig(:environment) || {}
   end
 
-  def variables
-    params[:variables] || []
+  def on_stop
+    environment_options[:on_stop]
   end
 
   def action
-    options[:action] || 'start'
+    environment_options[:action] || 'start'
   end
 end

app/workers/build_success_worker.rb

@@ -11,15 +11,6 @@ class BuildSuccessWorker
   private
 
   def create_deployment(build)
-    service = CreateDeploymentService.new(
-      build.project, build.user,
-      environment: build.environment,
-      sha: build.sha,
-      ref: build.ref,
-      tag: build.tag,
-      options: build.options.to_h[:environment],
-      variables: build.variables)
-
-    service.execute(build)
+    CreateDeploymentService.new(build).execute
   end
 end

changelogs/unreleased/25680-CI_ENVIRONMENT_URL.yml

+---
+title: Add $CI_ENVIRONMENT_URL to predefined variables for pipelines
+merge_request: 11695
+author:

db/fixtures/development/14_pipelines.rb

@@ -112,6 +112,10 @@ class Gitlab::Seeder::Pipelines
 
       setup_artifacts(build)
       setup_build_log(build)
+
+      build.project.environments.
+        find_or_create_by(name: build.expanded_environment_name)
+
       build.save
     end
   end

db/fixtures/development/17_cycle_analytics.rb

@@ -212,12 +212,9 @@ class Gitlab::Seeder::CycleAnalytics
     merge_requests.each do |merge_request|
       Timecop.travel 12.hours.from_now
 
-      CreateDeploymentService.new(merge_request.project, @user, {
-                                    environment: 'production',
-                                    ref: 'master',
-                                    tag: false,
-                                    sha: @project.repository.commit('master').sha
-                                  }).execute
+      job = merge_request.head_pipeline.builds.where.not(environment: nil).last
+
+      CreateDeploymentService.new(job).execute
     end
   end
 end

doc/ci/environments.md

@@ -94,6 +94,12 @@ the name given in `.gitlab-ci.yml` (with any variables expanded), while the
 second is a "cleaned-up" version of the name, suitable for use in URLs, DNS,
 etc.
 
+>**Note:**
+Starting with GitLab 9.3, the environment URL is exposed to the Runner via
+`$CI_ENVIRONMENT_URL`. The URL would be expanded from `.gitlab-ci.yml`, or if
+the URL was not defined there, the external URL from the environment would be
+used.
+
 To sum up, with the above `.gitlab-ci.yml` we have achieved that:
 
 - All branches will run the `test` and `build` jobs.

doc/ci/variables/README.md

@@ -43,6 +43,7 @@ future GitLab releases.**
 | **CI_DEBUG_TRACE**              | all    | 1.7    | Whether [debug tracing](#debug-tracing) is enabled |
 | **CI_ENVIRONMENT_NAME**         | 8.15   | all    | The name of the environment for this job |
 | **CI_ENVIRONMENT_SLUG**         | 8.15   | all    | A simplified version of the environment name, suitable for inclusion in DNS, URLs, Kubernetes labels, etc. |
+| **CI_ENVIRONMENT_URL**          | 9.3    | all    | The URL of the environment for this job |
 | **CI_JOB_ID**                   | 9.0    | all    | The unique id of the current job that GitLab CI uses internally |
 | **CI_JOB_MANUAL**               | 8.12   | all    | The flag to indicate that job was manually started |
 | **CI_JOB_NAME**                 | 9.0    | 0.5    | The name of the job as defined in `.gitlab-ci.yml` |

spec/factories/ci/builds.rb

@@ -64,7 +64,8 @@ FactoryGirl.define do
     trait :teardown_environment do
       environment 'staging'
       options environment: { name: 'staging',
-                             action: 'stop' }
+                             action: 'stop',
+                             url: 'http://staging.example.com/$CI_JOB_NAME' }
     end
 
     trait :allowed_to_fail do

spec/models/ci/build_spec.rb

@@ -427,6 +427,42 @@ describe Ci::Build, :models do
       end
     end
 
+    describe '#environment_url' do
+      subject { job.environment_url }
+
+      context 'when yaml environment uses $CI_COMMIT_REF_NAME' do
+        let(:job) do
+          create(:ci_build,
+                 ref: 'master',
+                 options: { environment: { url: 'http://review/$CI_COMMIT_REF_NAME' } })
+        end
+
+        it { is_expected.to eq('http://review/master') }
+      end
+
+      context 'when yaml environment uses yaml_variables containing symbol keys' do
+        let(:job) do
+          create(:ci_build,
+                 yaml_variables: [{ key: :APP_HOST, value: 'host' }],
+                 options: { environment: { url: 'http://review/$APP_HOST' } })
+        end
+
+        it { is_expected.to eq('http://review/host') }
+      end
+
+      context 'when yaml environment does not have url' do
+        let(:job) { create(:ci_build, environment: 'staging') }
+
+        let!(:environment) do
+          create(:environment, project: job.project, name: job.environment)
+        end
+
+        it 'returns the external_url from persisted environment' do
+          is_expected.to eq(environment.external_url)
+        end
+      end
+    end
+
     describe '#starts_environment?' do
       subject { build.starts_environment? }
 
@@ -918,6 +954,10 @@ describe Ci::Build, :models do
 
       it { is_expected.to eq(environment) }
     end
+
+    context 'when there is no environment' do
+      it { is_expected.to be_nil }
+    end
   end
 
   describe '#play' do
@@ -1176,11 +1216,6 @@ describe Ci::Build, :models do
     end
 
     context 'when build has an environment' do
-      before do
-        build.update(environment: 'production')
-        create(:environment, project: build.project, name: 'production', slug: 'prod-slug')
-      end
-
       let(:environment_variables) do
         [
           { key: 'CI_ENVIRONMENT_NAME', value: 'production', public: true },
@@ -1188,7 +1223,56 @@ describe Ci::Build, :models do
         ]
       end
 
-      it { environment_variables.each { |v| is_expected.to include(v) } }
+      let!(:environment) do
+        create(:environment,
+          project: build.project,
+          name: 'production',
+          slug: 'prod-slug',
+          external_url: '')
+      end
+
+      before do
+        build.update(environment: 'production')
+      end
+
+      shared_examples 'containing environment variables' do
+        it { environment_variables.each { |v| is_expected.to include(v) } }
+      end
+
+      context 'when no URL was set' do
+        it_behaves_like 'containing environment variables'
+
+        it 'does not have CI_ENVIRONMENT_URL' do
+          keys = subject.map { |var| var[:key] }
+
+          expect(keys).not_to include('CI_ENVIRONMENT_URL')
+        end
+      end
+
+      context 'when an URL was set' do
+        let(:url) { 'http://host/test' }
+
+        before do
+          environment_variables <<
+            { key: 'CI_ENVIRONMENT_URL', value: url, public: true }
+        end
+
+        context 'when the URL was set from the job' do
+          before do
+            build.update(options: { environment: { url: 'http://host/$CI_JOB_NAME' } })
+          end
+
+          it_behaves_like 'containing environment variables'
+        end
+
+        context 'when the URL was not set from the job, but environment' do
+          before do
+            environment.update(external_url: url)
+          end
+
+          it_behaves_like 'containing environment variables'
+        end
+      end
     end
 
     context 'when build started manually' do

spec/services/ci/create_pipeline_service_spec.rb

@@ -296,5 +296,20 @@ describe Ci::CreatePipelineService, services: true do
         expect(Environment.find_by(name: "review/master")).not_to be_nil
       end
     end
+
+    context 'when environment with invalid name' do
+      before do
+        config = YAML.dump(deploy: { environment: { name: 'name,with,commas' }, script: 'ls' })
+        stub_ci_pipeline_yaml_file(config)
+      end
+
+      it 'does not create an environment' do
+        expect do
+          result = execute_service
+
+          expect(result).to be_persisted
+        end.not_to change { Environment.count }
+      end
+    end
   end
 end

spec/support/cycle_analytics_helpers.rb

@@ -51,12 +51,43 @@ module CycleAnalyticsHelpers
   end
 
   def deploy_master(environment: 'production')
-    CreateDeploymentService.new(project, user, {
-                                  environment: environment,
-                                  ref: 'master',
-                                  tag: false,
-                                  sha: project.repository.commit('master').sha
-                                }).execute
+    dummy_job =
+      case environment
+      when 'production'
+        dummy_production_job
+      when 'staging'
+        dummy_staging_job
+      else
+        raise ArgumentError
+      end
+
+    CreateDeploymentService.new(dummy_job).execute
+  end
+
+  def dummy_production_job
+    @dummy_job ||= new_dummy_job('production')
+  end
+
+  def dummy_staging_job
+    @dummy_job ||= new_dummy_job('staging')
+  end
+
+  def dummy_pipeline
+    @dummy_pipeline ||=
+      Ci::Pipeline.new(sha: project.repository.commit('master').sha)
+  end
+
+  def new_dummy_job(environment)
+    project.environments.find_or_create_by(name: environment)
+
+    Ci::Build.new(
+      project: project,
+      user: user,
+      environment: environment,
+      ref: 'master',
+      tag: false,
+      name: 'dummy',
+      pipeline: dummy_pipeline)
   end
 end