Merge branch 'blackst0ne-add-discord-service' into 'master'

Add Discord integration

Closes #21635

See merge request gitlab-org/gitlab-ce!22684

3 files changed, 59 insertions, 0 deletions

diff --git a/app/models/project.rb b/app/models/project.rb
index 48905547ab4..d87fc1e4b86 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -135,6 +135,7 @@ class Project < ActiveRecord::Base
 
   # Project services
   has_one :campfire_service
+  has_one :discord_service
   has_one :drone_ci_service
   has_one :emails_on_push_service
   has_one :pipelines_email_service
diff --git a/app/models/project_services/discord_service.rb b/app/models/project_services/discord_service.rb
new file mode 100644
index 00000000000..21afd14dbff
--- /dev/null
+++ b/app/models/project_services/discord_service.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+require "discordrb/webhooks"
+
+class DiscordService < ChatNotificationService
+  def title
+    "Discord Notifications"
+  end
+
+  def description
+    "Receive event notifications in Discord"
+  end
+
+  def self.to_param
+    "discord"
+  end
+
+  def help
+    "This service sends notifications about project events to Discord channels.<br />
+    To set up this service:
+    <ol>
+      <li><a href='https://support.discordapp.com/hc/en-us/articles/228383668-Intro-to-Webhooks'>Setup a custom Incoming Webhook</a>.</li>
+      <li>Paste the <strong>Webhook URL</strong> into the field below.</li>
+      <li>Select events below to enable notifications.</li>
+    </ol>"
+  end
+
+  def event_field(event)
+    # No-op.
+  end
+
+  def default_channel_placeholder
+    # No-op.
+  end
+
+  def default_fields
+    [
+      { type: "text", name: "webhook", placeholder: "e.g. https://discordapp.com/api/webhooks/…" },
+      { type: "checkbox", name: "notify_only_broken_pipelines" },
+      { type: "checkbox", name: "notify_only_default_branch" }
+    ]
+  end
+
+  private
+
+  def notify(message, opts)
+    client = Discordrb::Webhooks::Client.new(url: webhook)
+
+    client.execute do |builder|
+      builder.content = message.pretext
+    end
+  end
+
+  def custom_data(data)
+    super(data).merge(markdown: true)
+  end
+end
diff --git a/app/models/service.rb b/app/models/service.rb
index 4dbda7acab6..5b8bf6e7cf0 100644
--- a/app/models/service.rb
+++ b/app/models/service.rb
@@ -253,6 +253,7 @@ class Service < ActiveRecord::Base
       bugzilla
       campfire
       custom_issue_tracker
+      discord
       drone_ci
       emails_on_push
       external_wiki