Add deployment events to chat notification services

This enables sending a chat message to Slack or Mattermost
  upon a successful, failed, or canceled deployment

27 files changed, 451 insertions, 5 deletions

diff --git a/app/models/deployment.rb b/app/models/deployment.rb
index d847a0a11e4..f5fdf285522 100644
--- a/app/models/deployment.rb
+++ b/app/models/deployment.rb
@@ -47,6 +47,12 @@ class Deployment < ApplicationRecord
         Deployments::SuccessWorker.perform_async(id)
       end
     end
+
+    after_transition any => [:success, :failed, :canceled] do |deployment|
+      deployment.run_after_commit do
+        Deployments::FinishedWorker.perform_async(id)
+      end
+    end
   end
 
   enum status: {
@@ -82,6 +88,11 @@ class Deployment < ApplicationRecord
     project.deployment_platform(environment: environment.name)&.cluster
   end
 
+  def execute_hooks
+    deployment_data = Gitlab::DataBuilder::Deployment.build(self)
+    project.execute_services(deployment_data, :deployment_hooks)
+  end
+
   def last?
     self == environment.last_deployment
   end
diff --git a/app/models/project_services/chat_message/deployment_message.rb b/app/models/project_services/chat_message/deployment_message.rb
new file mode 100644
index 00000000000..656a3e6ab4b
--- /dev/null
+++ b/app/models/project_services/chat_message/deployment_message.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+module ChatMessage
+  class DeploymentMessage < BaseMessage
+    attr_reader :commit_url
+    attr_reader :deployable_id
+    attr_reader :deployable_url
+    attr_reader :environment
+    attr_reader :short_sha
+    attr_reader :status
+
+    def initialize(data)
+      super
+
+      @commit_url = data[:commit_url]
+      @deployable_id = data[:deployable_id]
+      @deployable_url = data[:deployable_url]
+      @environment = data[:environment]
+      @short_sha = data[:short_sha]
+      @status = data[:status]
+    end
+
+    def attachments
+      [{
+        text: "#{project_link}\n#{deployment_link}, SHA #{commit_link}, by #{user_combined_name}",
+        color: color
+      }]
+    end
+
+    def activity
+      {}
+    end
+
+    private
+
+    def message
+      "Deploy to #{environment} #{humanized_status}"
+    end
+
+    def color
+      case status
+      when 'success'
+        'good'
+      when 'canceled'
+        'warning'
+      when 'failed'
+        'danger'
+      else
+        '#334455'
+      end
+    end
+
+    def project_link
+      link(project_name, project_url)
+    end
+
+    def deployment_link
+      link("Job ##{deployable_id}", deployable_url)
+    end
+
+    def commit_link
+      link(short_sha, commit_url)
+    end
+
+    def humanized_status
+      status == 'success' ? 'succeeded' : status
+    end
+  end
+end
diff --git a/app/models/project_services/chat_notification_service.rb b/app/models/project_services/chat_notification_service.rb
index c10ee07ccf4..7c9ecc6b821 100644
--- a/app/models/project_services/chat_notification_service.rb
+++ b/app/models/project_services/chat_notification_service.rb
@@ -33,7 +33,7 @@ class ChatNotificationService < Service
 
   def self.supported_events
     %w[push issue confidential_issue merge_request note confidential_note tag_push
-       pipeline wiki_page]
+       pipeline wiki_page deployment]
   end
 
   def fields
@@ -122,6 +122,8 @@ class ChatNotificationService < Service
       ChatMessage::PipelineMessage.new(data) if should_pipeline_be_notified?(data)
     when "wiki_page"
       ChatMessage::WikiPageMessage.new(data)
+    when "deployment"
+      ChatMessage::DeploymentMessage.new(data)
     end
   end
 
diff --git a/app/models/project_services/discord_service.rb b/app/models/project_services/discord_service.rb
index 405676792de..4385834ed0a 100644
--- a/app/models/project_services/discord_service.rb
+++ b/app/models/project_services/discord_service.rb
@@ -33,6 +33,11 @@ class DiscordService < ChatNotificationService
     # No-op.
   end
 
+  def self.supported_events
+    %w[push issue confidential_issue merge_request note confidential_note tag_push
+       pipeline wiki_page]
+  end
+
   def default_fields
     [
       { type: "text", name: "webhook", placeholder: "e.g. https://discordapp.com/api/webhooks/…" },
diff --git a/app/models/project_services/hangouts_chat_service.rb b/app/models/project_services/hangouts_chat_service.rb
index 272cd0f4e47..699cf1659d1 100644
--- a/app/models/project_services/hangouts_chat_service.rb
+++ b/app/models/project_services/hangouts_chat_service.rb
@@ -35,6 +35,11 @@ class HangoutsChatService < ChatNotificationService
     'https://chat.googleapis.com/v1/spaces…'
   end
 
+  def self.supported_events
+    %w[push issue confidential_issue merge_request note confidential_note tag_push
+       pipeline wiki_page]
+  end
+
   def default_fields
     [
       { type: 'text', name: 'webhook', placeholder: "e.g. #{webhook_placeholder}" },
diff --git a/app/models/project_services/microsoft_teams_service.rb b/app/models/project_services/microsoft_teams_service.rb
index c34078f13c1..c22a6dc26f6 100644
--- a/app/models/project_services/microsoft_teams_service.rb
+++ b/app/models/project_services/microsoft_teams_service.rb
@@ -33,6 +33,11 @@ class MicrosoftTeamsService < ChatNotificationService
   def default_channel_placeholder
   end
 
+  def self.supported_events
+    %w[push issue confidential_issue merge_request note confidential_note tag_push
+       pipeline wiki_page]
+  end
+
   def default_fields
     [
       { type: 'text', name: 'webhook', placeholder: "e.g. #{webhook_placeholder}" },
diff --git a/app/models/service.rb b/app/models/service.rb
index de549becf71..9896aa12e90 100644
--- a/app/models/service.rb
+++ b/app/models/service.rb
@@ -50,6 +50,7 @@ class Service < ApplicationRecord
   scope :job_hooks, -> { where(job_events: true, active: true) }
   scope :pipeline_hooks, -> { where(pipeline_events: true, active: true) }
   scope :wiki_page_hooks, -> { where(wiki_page_events: true, active: true) }
+  scope :deployment_hooks, -> { where(deployment_events: true, active: true) }
   scope :external_issue_trackers, -> { issue_trackers.active.without_defaults }
   scope :deployment, -> { where(category: 'deployment') }
 
@@ -335,6 +336,8 @@ class Service < ApplicationRecord
       "Event will be triggered when a wiki page is created/updated"
     when "commit", "commit_events"
       "Event will be triggered when a commit is created/updated"
+    when "deployment"
+      "Event will be triggered when a deployment finishes"
     end
   end
 
diff --git a/app/workers/all_queues.yml b/app/workers/all_queues.yml
index f9b2e698fc9..d01bbbf269e 100644
--- a/app/workers/all_queues.yml
+++ b/app/workers/all_queues.yml
@@ -83,6 +83,7 @@
 - pipeline_processing:ci_build_schedule
 
 - deployment:deployments_success
+- deployment:deployments_finished
 
 - repository_check:repository_check_clear
 - repository_check:repository_check_batch
diff --git a/app/workers/deployments/finished_worker.rb b/app/workers/deployments/finished_worker.rb
new file mode 100644
index 00000000000..c9d448d5d18
--- /dev/null
+++ b/app/workers/deployments/finished_worker.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Deployments
+  class FinishedWorker
+    include ApplicationWorker
+
+    queue_namespace :deployment
+
+    def perform(deployment_id)
+      Deployment.find_by_id(deployment_id).try(:execute_hooks)
+    end
+  end
+end
diff --git a/changelogs/unreleased/issue-42692-deployment-chat-notifications.yml b/changelogs/unreleased/issue-42692-deployment-chat-notifications.yml
new file mode 100644
index 00000000000..3f0a96ad50e
--- /dev/null
+++ b/changelogs/unreleased/issue-42692-deployment-chat-notifications.yml
@@ -0,0 +1,5 @@
+---
+title: Add deployment events to chat notification services
+merge_request: 27338
+author:
+type: added
diff --git a/db/migrate/20190426180107_add_deployment_events_to_services.rb b/db/migrate/20190426180107_add_deployment_events_to_services.rb
new file mode 100644
index 00000000000..1fb137fb5f9
--- /dev/null
+++ b/db/migrate/20190426180107_add_deployment_events_to_services.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddDeploymentEventsToServices < ActiveRecord::Migration[5.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_column_with_default(:services, :deployment_events, :boolean, default: false, allow_null: false)
+  end
+
+  def down
+    remove_column(:services, :deployment_events)
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 23566a31a9d..a38c07a491e 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20190422082247) do
+ActiveRecord::Schema.define(version: 20190426180107) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -1999,6 +1999,7 @@ ActiveRecord::Schema.define(version: 20190422082247) do
     t.boolean "commit_events", default: true, null: false
     t.boolean "job_events", default: false, null: false
     t.boolean "confidential_note_events", default: true
+    t.boolean "deployment_events", default: false, null: false
     t.index ["project_id"], name: "index_services_on_project_id", using: :btree
     t.index ["template"], name: "index_services_on_template", using: :btree
     t.index ["type"], name: "index_services_on_type", using: :btree
diff --git a/lib/gitlab/data_builder/deployment.rb b/lib/gitlab/data_builder/deployment.rb
new file mode 100644
index 00000000000..26705dd1f6f
--- /dev/null
+++ b/lib/gitlab/data_builder/deployment.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module DataBuilder
+    module Deployment
+      extend self
+
+      def build(deployment)
+        {
+          object_kind: 'deployment',
+          status: deployment.status,
+          deployable_id: deployment.deployable_id,
+          deployable_url: Gitlab::UrlBuilder.build(deployment.deployable),
+          environment: deployment.environment.name,
+          project: deployment.project.hook_attrs,
+          short_sha: deployment.short_sha,
+          user: deployment.user.hook_attrs,
+          commit_url: Gitlab::UrlBuilder.build(deployment.commit)
+        }
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/url_builder.rb b/lib/gitlab/url_builder.rb
index f86d599e4cb..169ce8ab026 100644
--- a/lib/gitlab/url_builder.rb
+++ b/lib/gitlab/url_builder.rb
@@ -30,6 +30,8 @@ module Gitlab
         snippet_url(object)
       when Milestone
         milestone_url(object)
+      when ::Ci::Build
+        project_job_url(object.project, object)
       else
         raise NotImplementedError.new("No URL builder defined for #{object.class}")
       end
diff --git a/spec/factories/deployments.rb b/spec/factories/deployments.rb
index 011c98599a3..db438ad32d3 100644
--- a/spec/factories/deployments.rb
+++ b/spec/factories/deployments.rb
@@ -1,6 +1,6 @@
 FactoryBot.define do
   factory :deployment, class: Deployment do
-    sha '97de212e80737a608d939f648d959671fb0a0142'
+    sha 'b83d6e391c22777fca1ed3012fce84f633d7fed0'
     ref 'master'
     tag false
     user nil
diff --git a/spec/features/admin/admin_settings_spec.rb b/spec/features/admin/admin_settings_spec.rb
index 04f39b807d7..3c9a9d61756 100644
--- a/spec/features/admin/admin_settings_spec.rb
+++ b/spec/features/admin/admin_settings_spec.rb
@@ -230,6 +230,13 @@ describe 'Admin updates settings' do
       expect(find_field('Username').value).to eq 'test_user'
       expect(find('#service_push_channel').value).to eq '#test_channel'
     end
+
+    it 'defaults Deployment events to false for chat notification template settings' do
+      first(:link, 'Service Templates').click
+      click_link 'Slack notifications'
+
+      expect(find_field('Deployment')).not_to be_checked
+    end
   end
 
   context 'CI/CD page' do
@@ -373,10 +380,14 @@ describe 'Admin updates settings' do
   def check_all_events
     page.check('Active')
     page.check('Push')
-    page.check('Tag push')
-    page.check('Note')
     page.check('Issue')
+    page.check('Confidential issue')
     page.check('Merge request')
+    page.check('Note')
+    page.check('Confidential note')
+    page.check('Tag push')
     page.check('Pipeline')
+    page.check('Wiki page')
+    page.check('Deployment')
   end
 end
diff --git a/spec/lib/gitlab/data_builder/deployment_spec.rb b/spec/lib/gitlab/data_builder/deployment_spec.rb
new file mode 100644
index 00000000000..b89a44e178b
--- /dev/null
+++ b/spec/lib/gitlab/data_builder/deployment_spec.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::DataBuilder::Deployment do
+  describe '.build' do
+    it 'returns the object kind for a deployment' do
+      deployment = build(:deployment)
+
+      data = described_class.build(deployment)
+
+      expect(data[:object_kind]).to eq('deployment')
+    end
+
+    it 'returns data for the given build' do
+      environment = create(:environment, name: "somewhere")
+      project = create(:project, :repository, name: 'myproj')
+      commit = project.commit('HEAD')
+      deployment = create(:deployment, status: :failed, environment: environment, sha: commit.sha, project: project)
+      deployable = deployment.deployable
+      expected_deployable_url = Gitlab::Routing.url_helpers.project_job_url(deployable.project, deployable)
+      expected_commit_url = Gitlab::UrlBuilder.build(commit)
+
+      data = described_class.build(deployment)
+
+      expect(data[:status]).to eq('failed')
+      expect(data[:deployable_id]).to eq(deployable.id)
+      expect(data[:deployable_url]).to eq(expected_deployable_url)
+      expect(data[:environment]).to eq("somewhere")
+      expect(data[:project]).to eq(project.hook_attrs)
+      expect(data[:short_sha]).to eq(deployment.short_sha)
+      expect(data[:user]).to eq(deployment.user.hook_attrs)
+      expect(data[:commit_url]).to eq(expected_commit_url)
+    end
+  end
+end
diff --git a/spec/lib/gitlab/import_export/safe_model_attributes.yml b/spec/lib/gitlab/import_export/safe_model_attributes.yml
index 591a3d296c2..9093d21647a 100644
--- a/spec/lib/gitlab/import_export/safe_model_attributes.yml
+++ b/spec/lib/gitlab/import_export/safe_model_attributes.yml
@@ -423,6 +423,7 @@ Service:
 - wiki_page_events
 - confidential_issues_events
 - confidential_note_events
+- deployment_events
 ProjectHook:
 - id
 - url
diff --git a/spec/models/ci/build_spec.rb b/spec/models/ci/build_spec.rb
index 3a7d20a58c8..339483d4f7d 100644
--- a/spec/models/ci/build_spec.rb
+++ b/spec/models/ci/build_spec.rb
@@ -856,6 +856,10 @@ describe Ci::Build do
     let(:deployment) { build.deployment }
     let(:environment) { deployment.environment }
 
+    before do
+      allow(Deployments::FinishedWorker).to receive(:perform_async)
+    end
+
     it 'has deployments record with created status' do
       expect(deployment).to be_created
       expect(environment.name).to eq('review/master')
diff --git a/spec/models/deployment_spec.rb b/spec/models/deployment_spec.rb
index d9170d5fa07..0ca758429b8 100644
--- a/spec/models/deployment_spec.rb
+++ b/spec/models/deployment_spec.rb
@@ -102,6 +102,13 @@ describe Deployment do
 
         deployment.succeed!
       end
+
+      it 'executes Deployments::FinishedWorker asynchronously' do
+        expect(Deployments::FinishedWorker)
+          .to receive(:perform_async).with(deployment.id)
+
+        deployment.succeed!
+      end
     end
 
     context 'when deployment failed' do
@@ -115,6 +122,13 @@ describe Deployment do
           expect(deployment.finished_at).to be_like_time(Time.now)
         end
       end
+
+      it 'executes Deployments::FinishedWorker asynchronously' do
+        expect(Deployments::FinishedWorker)
+          .to receive(:perform_async).with(deployment.id)
+
+        deployment.drop!
+      end
     end
 
     context 'when deployment was canceled' do
@@ -128,6 +142,13 @@ describe Deployment do
           expect(deployment.finished_at).to be_like_time(Time.now)
         end
       end
+
+      it 'executes Deployments::FinishedWorker asynchronously' do
+        expect(Deployments::FinishedWorker)
+          .to receive(:perform_async).with(deployment.id)
+
+        deployment.cancel!
+      end
     end
   end
 
diff --git a/spec/models/project_services/chat_message/deployment_message_spec.rb b/spec/models/project_services/chat_message/deployment_message_spec.rb
new file mode 100644
index 00000000000..86565ce8b01
--- /dev/null
+++ b/spec/models/project_services/chat_message/deployment_message_spec.rb
@@ -0,0 +1,150 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ChatMessage::DeploymentMessage do
+  describe '#pretext' do
+    it 'returns a message with the data returned by the deployment data builder' do
+      environment = create(:environment, name: "myenvironment")
+      project = create(:project, :repository)
+      commit = project.commit('HEAD')
+      deployment = create(:deployment, status: :success, environment: environment, project: project, sha: commit.sha)
+      data = Gitlab::DataBuilder::Deployment.build(deployment)
+
+      message = described_class.new(data)
+
+      expect(message.pretext).to eq("Deploy to myenvironment succeeded")
+    end
+
+    it 'returns a message for a successful deployment' do
+      data = {
+        status: 'success',
+        environment: 'production'
+      }
+
+      message = described_class.new(data)
+
+      expect(message.pretext).to eq('Deploy to production succeeded')
+    end
+
+    it 'returns a message for a failed deployment' do
+      data = {
+        status: 'failed',
+        environment: 'production'
+      }
+
+      message = described_class.new(data)
+
+      expect(message.pretext).to eq('Deploy to production failed')
+    end
+
+    it 'returns a message for a canceled deployment' do
+      data = {
+        status: 'canceled',
+        environment: 'production'
+      }
+
+      message = described_class.new(data)
+
+      expect(message.pretext).to eq('Deploy to production canceled')
+    end
+
+    it 'returns a message for a deployment to another environment' do
+      data = {
+        status: 'success',
+        environment: 'staging'
+      }
+
+      message = described_class.new(data)
+
+      expect(message.pretext).to eq('Deploy to staging succeeded')
+    end
+
+    it 'returns a message for a deployment with any other status' do
+      data = {
+        status: 'unknown',
+        environment: 'staging'
+      }
+
+      message = described_class.new(data)
+
+      expect(message.pretext).to eq('Deploy to staging unknown')
+    end
+  end
+
+  describe '#attachments' do
+    def deployment_data(params)
+      {
+        object_kind: "deployment",
+        status: "success",
+        deployable_id: 3,
+        deployable_url: "deployable_url",
+        environment: "sandbox",
+        project: {
+          name: "greatproject",
+          web_url: "project_web_url",
+          path_with_namespace: "project_path_with_namespace"
+        },
+        user: {
+          name: "Jane Person",
+          username: "jane"
+        },
+        short_sha: "12345678",
+        commit_url: "commit_url"
+      }.merge(params)
+    end
+
+    it 'returns attachments with the data returned by the deployment data builder' do
+      user = create(:user, name: "John Smith", username: "smith")
+      namespace = create(:namespace, name: "myspace")
+      project = create(:project, :repository, namespace: namespace, name: "myproject")
+      commit = project.commit('HEAD')
+      environment = create(:environment, name: "myenvironment", project: project)
+      ci_build = create(:ci_build, project: project)
+      deployment = create(:deployment, :success, deployable: ci_build, environment: environment, project: project, user: user, sha: commit.sha)
+      job_url = Gitlab::Routing.url_helpers.project_job_url(project, ci_build)
+      commit_url = Gitlab::UrlBuilder.build(deployment.commit)
+      data = Gitlab::DataBuilder::Deployment.build(deployment)
+
+      message = described_class.new(data)
+
+      expect(message.attachments).to eq([{
+        text: "[myspace/myproject](#{project.web_url})\n[Job ##{ci_build.id}](#{job_url}), SHA [#{deployment.short_sha}](#{commit_url}), by John Smith (smith)",
+        color: "good"
+      }])
+    end
+
+    it 'returns attachments for a failed deployment' do
+      data = deployment_data(status: 'failed')
+
+      message = described_class.new(data)
+
+      expect(message.attachments).to eq([{
+        text: "[project_path_with_namespace](project_web_url)\n[Job #3](deployable_url), SHA [12345678](commit_url), by Jane Person (jane)",
+        color: "danger"
+      }])
+    end
+
+    it 'returns attachments for a canceled deployment' do
+      data = deployment_data(status: 'canceled')
+
+      message = described_class.new(data)
+
+      expect(message.attachments).to eq([{
+        text: "[project_path_with_namespace](project_web_url)\n[Job #3](deployable_url), SHA [12345678](commit_url), by Jane Person (jane)",
+        color: "warning"
+      }])
+    end
+
+    it 'uses a neutral color for a deployment with any other status' do
+      data = deployment_data(status: 'some-new-status-we-make-in-the-future')
+
+      message = described_class.new(data)
+
+      expect(message.attachments).to eq([{
+        text: "[project_path_with_namespace](project_web_url)\n[Job #3](deployable_url), SHA [12345678](commit_url), by Jane Person (jane)",
+        color: "#334455"
+      }])
+    end
+  end
+end
diff --git a/spec/models/project_services/microsoft_teams_service_spec.rb b/spec/models/project_services/microsoft_teams_service_spec.rb
index 521d5265753..c025d7c882e 100644
--- a/spec/models/project_services/microsoft_teams_service_spec.rb
+++ b/spec/models/project_services/microsoft_teams_service_spec.rb
@@ -30,6 +30,12 @@ describe MicrosoftTeamsService do
     end
   end
 
+  describe '.supported_events' do
+    it 'does not support deployment_events' do
+      expect(described_class.supported_events).not_to include('deployment')
+    end
+  end
+
   describe "#execute" do
     let(:user)    { create(:user) }
     set(:project) { create(:project, :repository, :wiki_repo) }
diff --git a/spec/services/update_deployment_service_spec.rb b/spec/services/update_deployment_service_spec.rb
index c664bac39fc..7dc52f6816a 100644
--- a/spec/services/update_deployment_service_spec.rb
+++ b/spec/services/update_deployment_service_spec.rb
@@ -22,6 +22,7 @@ describe UpdateDeploymentService do
   subject(:service) { described_class.new(deployment) }
 
   before do
+    allow(Deployments::FinishedWorker).to receive(:perform_async)
     job.success! # Create/Succeed deployment
   end
 
diff --git a/spec/support/shared_examples/models/chat_service_spec.rb b/spec/support/shared_examples/models/chat_service_spec.rb
index cf1d52a9616..9d3ce5e2be1 100644
--- a/spec/support/shared_examples/models/chat_service_spec.rb
+++ b/spec/support/shared_examples/models/chat_service_spec.rb
@@ -25,6 +25,12 @@ shared_examples_for "chat service" do |service_name|
     end
   end
 
+  describe '.supported_events' do
+    it 'does not support deployment_events' do
+      expect(described_class.supported_events).not_to include('deployment')
+    end
+  end
+
   describe "#execute" do
     let(:user) { create(:user) }
     let(:project) { create(:project, :repository) }
diff --git a/spec/support/shared_examples/slack_mattermost_notifications_shared_examples.rb b/spec/support/shared_examples/slack_mattermost_notifications_shared_examples.rb
index 940c24c8d67..c31346374f4 100644
--- a/spec/support/shared_examples/slack_mattermost_notifications_shared_examples.rb
+++ b/spec/support/shared_examples/slack_mattermost_notifications_shared_examples.rb
@@ -106,6 +106,14 @@ RSpec.shared_examples 'slack or mattermost notifications' do
       expect(WebMock).to have_requested(:post, webhook_url).once
     end
 
+    it "calls Slack/Mattermost API for deployment events" do
+      deployment_event_data = { object_kind: 'deployment' }
+
+      chat_service.execute(deployment_event_data)
+
+      expect(WebMock).to have_requested(:post, webhook_url).once
+    end
+
     it 'uses the username as an option for slack when configured' do
       allow(chat_service).to receive(:username).and_return(username)
 
diff --git a/spec/workers/build_success_worker_spec.rb b/spec/workers/build_success_worker_spec.rb
index 065aeaf2b65..ffe8796ded9 100644
--- a/spec/workers/build_success_worker_spec.rb
+++ b/spec/workers/build_success_worker_spec.rb
@@ -15,6 +15,7 @@ describe BuildSuccessWorker do
         let!(:build) { create(:ci_build, :deploy_to_production) }
 
         before do
+          allow(Deployments::FinishedWorker).to receive(:perform_async)
           Deployment.delete_all
           build.reload
         end
diff --git a/spec/workers/deployments/finished_worker_spec.rb b/spec/workers/deployments/finished_worker_spec.rb
new file mode 100644
index 00000000000..df62821e2cd
--- /dev/null
+++ b/spec/workers/deployments/finished_worker_spec.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Deployments::FinishedWorker do
+  let(:worker) { described_class.new }
+
+  describe '#perform' do
+    before do
+      allow(ProjectServiceWorker).to receive(:perform_async)
+    end
+
+    it 'executes project services for deployment_hooks' do
+      deployment = create(:deployment)
+      project = deployment.project
+      service = create(:service, type: 'SlackService', project: project, deployment_events: true, active: true)
+
+      worker.perform(deployment.id)
+
+      expect(ProjectServiceWorker).to have_received(:perform_async).with(service.id, an_instance_of(Hash))
+    end
+
+    it 'does not execute an inactive service' do
+      deployment = create(:deployment)
+      project = deployment.project
+      create(:service, type: 'SlackService', project: project, deployment_events: true, active: false)
+
+      worker.perform(deployment.id)
+
+      expect(ProjectServiceWorker).not_to have_received(:perform_async)
+    end
+
+    it 'does nothing if a deployment with the given id does not exist' do
+      worker.perform(0)
+
+      expect(ProjectServiceWorker).not_to have_received(:perform_async)
+    end
+  end
+end