Merge branch '13333-consider-updating-http-parser-rb-to-0-6-0' into 'master'

Replace the tinder gem by bare HTTP requests

## What does this MR do?

It removes the `tinder` gem (used to talk to the Campfire API) and replaces its use by bare HTTP requests.

## Are there points in the code the reviewer needs to double check?

N/A.

## Why was this MR needed?

To simplify the potential dependency hell discussed in #13333.  
The initial issue was about updating `http_parser.rb` which was required by `twitter-stream` which was required by `tinder`.  
Those 3 gems are not needed anymore.  

## What are the relevant issue numbers?

#13333

## Screenshots (if relevant)

N/A.

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)
Closes #13333

See merge request !5758

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.11.0 (unreleased)
+  - Remove the http_parser.rb dependency by removing the tinder gem. !5758 (tbalthazar)
   - Fix don't pass a local variable called `i` to a partial. !20510 (herminiotorres)
   - Fix rename `add_users_into_project` and `projects_ids`. !20512 (herminiotorres)
   - Fix the title of the toggle dropdown button. !5515 (herminiotorres)

Gemfile

@@ -163,9 +163,6 @@ gem 'redis-rails', '~> 4.0.0'
 gem 'redis', '~> 3.2'
 gem 'connection_pool', '~> 2.0'
 
-# Campfire integration
-gem 'tinder', '~> 1.10.0'
-
 # HipChat integration
 gem 'hipchat', '~> 1.5.0'
 

Gemfile.lock

@@ -335,7 +335,6 @@ GEM
       activesupport (>= 2)
       nokogiri (~> 1.4)
     htmlentities (4.3.4)
-    http_parser.rb (0.5.3)
     httparty (0.13.7)
       json (~> 1.8)
       multi_xml (>= 0.5.2)
@@ -672,7 +671,6 @@ GEM
       redis-namespace (>= 1.5.2)
       rufus-scheduler (>= 2.0.24)
       sidekiq (>= 4.0.0)
-    simple_oauth (0.1.9)
     simplecov (0.12.0)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)
@@ -742,21 +740,8 @@ GEM
     tilt (2.0.5)
     timecop (0.8.1)
     timfel-krb5-auth (0.8.3)
-    tinder (1.10.1)
-      eventmachine (~> 1.0)
-      faraday (~> 0.9.0)
-      faraday_middleware (~> 0.9)
-      hashie (>= 1.0)
-      json (~> 1.8.0)
-      mime-types
-      multi_json (~> 1.7)
-      twitter-stream (~> 0.1)
     turbolinks (2.5.3)
       coffee-rails
-    twitter-stream (0.1.16)
-      eventmachine (>= 0.12.8)
-      http_parser.rb (~> 0.5.1)
-      simple_oauth (~> 0.1.4)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
     u2f (0.2.1)
@@ -981,7 +966,6 @@ DEPENDENCIES
   teaspoon-jasmine (~> 2.2.0)
   test_after_commit (~> 0.4.2)
   thin (~> 1.7.0)
-  tinder (~> 1.10.0)
   turbolinks (~> 2.5.0)
   u2f (~> 0.2.1)
   uglifier (~> 2.7.2)

app/models/project_services/campfire_service.rb

 class CampfireService < Service
+  include HTTParty
+
   prop_accessor :token, :subdomain, :room
   validates :token, presence: true, if: :activated?
 
@@ -29,18 +31,53 @@ class CampfireService < Service
   def execute(data)
     return unless supported_events.include?(data[:object_kind])
 
-    room = gate.find_room_by_name(self.room)
-    return true unless room
-
+    self.class.base_uri base_uri
     message = build_message(data)
-
-    room.speak(message)
+    speak(self.room, message, auth)
   end
 
   private
 
-  def gate
-    @gate ||= Tinder::Campfire.new(subdomain, token: token)
+  def base_uri
+    @base_uri ||= "https://#{subdomain}.campfirenow.com"
+  end
+
+  def auth
+    # use a dummy password, as explained in the Campfire API doc:
+    # https://github.com/basecamp/campfire-api#authentication
+    @auth ||= {
+      basic_auth: {
+        username: token,
+        password: 'X'
+      }
+    }
+  end
+
+  # Post a message into a room, returns the message Hash in case of success.
+  # Returns nil otherwise.
+  # https://github.com/basecamp/campfire-api/blob/master/sections/messages.md#create-message
+  def speak(room_name, message, auth)
+    room = rooms(auth).find { |r| r["name"] == room_name }
+    return nil unless room
+
+    path = "/room/#{room["id"]}/speak.json"
+    body = {
+      body: {
+        message: {
+          type: 'TextMessage',
+          body: message
+        }
+      }
+    }
+    res = self.class.post(path, auth.merge(body))
+    res.code == 201 ? res : nil
+  end
+
+  # Returns a list of rooms, or [].
+  # https://github.com/basecamp/campfire-api/blob/master/sections/rooms.md#get-rooms
+  def rooms(auth)
+    res = self.class.get("/rooms.json", auth) 
+    res.code == 200 ? res["rooms"] : []
   end
 
   def build_message(push)

spec/fixtures/project_services/campfire/rooms.json

+{
+  "rooms": [
+    {
+      "name": "test-room",
+      "locked": false,
+      "created_at": "2009/01/07 20:43:11 +0000",
+      "updated_at": "2009/03/18 14:31:39 +0000",
+      "topic": "The room topic\n",
+      "id": 123,
+      "membership_limit": 4
+    },
+    {
+      "name": "another room",
+      "locked": true,
+      "created_at": "2009/03/18 14:30:42 +0000",
+      "updated_at": "2013/01/27 14:14:27 +0000",
+      "topic": "Comment, ideas, GitHub notifications for eCommittee App",
+      "id": 456,
+      "membership_limit": 4
+    }
+  ]
+}

spec/fixtures/project_services/campfire/rooms2.json

+{
+  "rooms": [
+    {
+      "name": "test-room-not-found",
+      "locked": false,
+      "created_at": "2009/01/07 20:43:11 +0000",
+      "updated_at": "2009/03/18 14:31:39 +0000",
+      "topic": "The room topic\n",
+      "id": 123,
+      "membership_limit": 4
+    },
+    {
+      "name": "another room",
+      "locked": true,
+      "created_at": "2009/03/18 14:30:42 +0000",
+      "updated_at": "2013/01/27 14:14:27 +0000",
+      "topic": "Comment, ideas, GitHub notifications for eCommittee App",
+      "id": 456,
+      "membership_limit": 4
+    }
+  ]
+}

spec/models/project_services/campfire_service_spec.rb

@@ -39,4 +39,62 @@ describe CampfireService, models: true do
       it { is_expected.not_to validate_presence_of(:token) }
     end
   end
+
+  describe "#execute" do
+    let(:user)    { create(:user) }
+    let(:project) { create(:project) }
+
+    before do
+      @campfire_service = CampfireService.new
+      allow(@campfire_service).to receive_messages(
+        project_id: project.id,
+        project: project,
+        service_hook: true,
+        token: 'verySecret',
+        subdomain: 'project-name',
+        room: 'test-room'
+      )
+      @sample_data = Gitlab::PushDataBuilder.build_sample(project, user)
+      @rooms_url = 'https://verySecret:X@project-name.campfirenow.com/rooms.json'
+      @headers = { 'Content-Type' => 'application/json; charset=utf-8' }
+    end
+
+    it "calls Campfire API to get a list of rooms and speak in a room" do
+      # make sure a valid list of rooms is returned
+      body = File.read(Rails.root + 'spec/fixtures/project_services/campfire/rooms.json')
+      WebMock.stub_request(:get, @rooms_url).to_return(
+        body: body,
+        status: 200,
+        headers: @headers
+      )
+      # stub the speak request with the room id found in the previous request's response
+      speak_url = 'https://verySecret:X@project-name.campfirenow.com/room/123/speak.json'
+      WebMock.stub_request(:post, speak_url)
+
+      @campfire_service.execute(@sample_data)
+
+      expect(WebMock).to have_requested(:get, @rooms_url).once
+      expect(WebMock).to have_requested(:post, speak_url).with(
+        body: /#{project.path}.*#{@sample_data[:before]}.*#{@sample_data[:after]}/
+      ).once
+    end
+
+    it "calls Campfire API to get a list of rooms but shouldn't speak in a room" do
+      # return a list of rooms that do not contain a room named 'test-room'
+      body = File.read(Rails.root + 'spec/fixtures/project_services/campfire/rooms2.json')
+      WebMock.stub_request(:get, @rooms_url).to_return(
+        body: body,
+        status: 200,
+        headers: @headers
+      )
+      # we want to make sure no request is sent to the /speak endpoint, here is a basic
+      # regexp that matches this endpoint
+      speak_url = 'https://verySecret:X@project-name.campfirenow.com/room/.*/speak.json'
+
+      @campfire_service.execute(@sample_data)
+
+      expect(WebMock).to have_requested(:get, @rooms_url).once
+      expect(WebMock).not_to have_requested(:post, /#{speak_url}/)
+    end
+  end
 end