Bug 1085620 part3: Add emulator build task. r=lightsofapollo

The "mach ci-build" has a new optional argument called b2g-config. This
allows the user to pass the b2g config directory for the target. This
argument is necessary for emulator and phone builds.

--HG--
extra : rebase_source : 40724b5d1b9b33961180e2a019a7237ca13410b4
extra : source : c20ec1fd15670422f517c352c388bd036c454fb6

testing/docker/builder/bin/build-emulator.sh

@@ -15,9 +15,15 @@ if [ ! -d mozharness ]; then
   hg clone https://hg.mozilla.org/build/mozharness mozharness
 fi
 
-OBJDIR=$HOME/object-folder
-mkdir -p $OBJDIR
-git clone https://git.mozilla.org/b2g/B2G.git $OBJDIR/B2G
+OBJDIR="$HOME/object-folder-$B2G_CONFIG-$B2G_DEBUG"
+
+if [ ! -d $OBJDIR ]; then
+    mkdir -p $OBJDIR
+fi
+
+if [ ! -d $OBJDIR/B2G ]; then
+    git clone https://git.mozilla.org/b2g/B2G.git $OBJDIR/B2G
+fi
 
 ./mozharness/scripts/b2g_build.py \
   --config b2g/taskcluster-emulator.py \

testing/taskcluster/mach_commands.py

@@ -213,11 +213,13 @@ class CIBuild(object):
         help='revision in gecko to use in sub tasks')
     @CommandArgument('--repository',
         help='full path to hg repository to use in sub tasks')
+    @CommandArgument('--b2g-config',
+        help='(emulators/phones only) in tree build configuration directory')
     @CommandArgument('--owner',
         help='email address of who owns this graph')
     @CommandArgument('build_task',
         help='path to build task definition')
-    def create_ci_build(self, build_task, revision="", repository="", owner=""):
+    def create_ci_build(self, build_task, revision="", repository="", b2g_config="", owner=""):
         # TODO handle git repos
         if not repository:
             repository = get_hg_url()
@@ -229,6 +231,9 @@ class CIBuild(object):
             'docker_image': docker_image,
             'repository': repository,
             'revision': revision,
+            'b2g-config': b2g_config,
+            'debug': debug,
+            'build-type': 'Debug' if debug else 'Opt',
             'owner': owner,
             'from_now': json_time_from_now,
             'now': current_json_time()

testing/taskcluster/tasks/builds/b2g_emulator.yml

@@ -0,0 +1,51 @@
+taskId: {{build_slugid}}
+task:
+  created: '{{now}}'
+  deadline: '{{#from_now}}24 hours{{/from_now}}'
+  metadata:
+    source: http://todo.com/soon
+    owner: {{owner}}
+    name: B2G Emulator {{build-type}}
+    description: B2G Emulator {{build-type}}
+
+  workerType: b2gbuild
+  provisionerId: aws-provisioner
+
+  scopes:
+    - 'docker-worker:cache:build-emulator-objects'
+
+  payload:
+    cache:
+      build-emulator-objects: '/home/worker/object-folder-{{b2g-config}}-{{debug}}'
+
+    env:
+      TARGET: 'emulator'
+      B2G_CONFIG: '{{b2g-config}}'
+      # revision/project params defined originally here https://github.com/taskcluster/taskcluster-try/blob/master/try/instantiate.js
+      REVISION: '{{revision}}'
+      REPOSITORY: '{{repository}}'
+
+    image: '{{#docker_image}}builder{{/docker_image}}'
+    maxRunTime: 7200
+
+    command:
+      - build-emulator.sh
+
+    artifacts:
+      'public/build':
+        type: directory
+        path: '/home/worker/artifacts/'
+        expires: '{{#from_now}}1 year{{/from_now}}'
+
+  extra:
+    # Rather then enforcing particular conventions we require that all build
+    # tasks provide the "build" extra field to specify where the build and tests
+    # files are located.
+    locations:
+      build: 'public/build/emulator.tar.gz'
+      tests: ['public/build/b2g-tests.zip', 'public/build/gaia-tests.zip']
+      symbols: 'public/build/b2g-crashreporter-symbols.zip'
+      sources: 'public/build/sources.xml'
+
+    treeherder:
+      symbol: B