Create bbuildbot config repository.

This contains the manifest and configuration (along with supporting
code) for a brillo continuous builder config (bbuildbot).

BUG=chromium:558660
TEST=Not fully testable before commit.

Change-Id: I2df555014b6efc4503c3ba888a82801ec6cde9c6

.gitignore

+# Generated files
+*.pyc
+*~
+*.swp
+.project
+.pydevproject
+
+# source cross-reference files.
+tags
+.ctags
+cscope.out

README.txt

+This repository exists to configure cbuildbot based bruteus builds.
+
+To check this out as a repo checkout:
+
+  repo init -u https://android.googlesource.com/platform/bbuildbot_config
+
+To perform a local build:
+
+  bin/cbuildbot --buildroot ~/tmp/test_buildroot \
+    --buildbot --debug --config_repo  \
+    https://android.googlesource.com/platform/bbuildbot_config \
+    bbuildbot

builders/brillo_builders.py

+# Copyright 2015 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Module builders for bbuildbot."""
+
+from __future__ import print_function
+
+import os
+
+from chromite.lib import cros_build_lib
+from chromite.lib import osutils
+
+from chromite.cbuildbot.builders import generic_builders
+from chromite.cbuildbot.stages import generic_stages
+from chromite.cbuildbot.stages import sync_stages
+from chromite.cbuildbot import repository
+
+
+class BrilloStageBase(generic_stages.BuilderStage):
+  """Base class for all symbols build stages."""
+
+  def BrilloRoot(self):
+    # Turn /mnt/data/b/cbuild/android -> /mnt/data/b/cbuild/android_brillo
+
+    # We have to be OUTSIDE the build root, since this is a new repo checkout.
+    # We don't want to be in /tmp both because we might not fit, and because the
+    # initial sync is expensive enough that we don't want to have to redo it if
+    # avoidable.
+    return self._run.buildroot + '_brillo'
+
+  def BuildOutput(self):
+    # We store brillo build output in brillo's default output directory.
+    #  (ex: brillo_root/out)
+    return os.path.join(self.BrilloRoot(), 'out')
+
+
+class BrilloCleanStage(BrilloStageBase):
+  """Compile the Brillo checkout."""
+
+  def PerformStage(self):
+    """Clean up Brillo build output."""
+    osutils.RmDir(self.BuildOutput(), ignore_missing=True)
+
+    if self._run.options.clobber:
+      osutils.RmDir(self.BrilloRoot(), ignore_missing=True)
+
+
+class BrilloSyncStage(BrilloStageBase):
+  """Sync Brillo code to a sub-directory."""
+
+  def PerformStage(self):
+    """Do the sync work."""
+    osutils.SafeMakedirs(self.BrilloRoot())
+
+    # Fetch and/or update the brillo source code.
+    brillo_repo = repository.RepoRepository(
+        manifest_repo_url=self._run.config.brillo_manifest_url,
+        branch=self._run.config.brillo_manifest_branch,
+        directory=self.BrilloRoot())
+    brillo_repo.Initialize()
+    brillo_repo.Sync()
+
+
+class BrilloBuildStage(BrilloStageBase):
+  """Compile the Brillo checkout."""
+
+  def PerformStage(self):
+    """Do the build work."""
+    cmd_list = []
+    cmd_list.append('. build/envsetup.sh')
+    cmd_list.append('lunch brilloemulator_arm-eng')
+    cmd_list.append('OUT_DIR=%s' % self.BuildOutput())
+    cmd_list.append('make -j 32')
+
+    # We use a shell invocation so environmental variables are preserved.
+    cmd = ' && '.join(cmd_list)
+    cros_build_lib.RunCommand(cmd, shell=True, cwd=self.BrilloRoot())
+
+
+class BrilloBuilder(generic_builders.Builder):
+  """Builder that performs sync, then exits."""
+
+  def GetSyncInstance(self):
+    """Returns an instance of a SyncStage that should be run."""
+    return self._GetStageInstance(sync_stages.SyncStage)
+
+  def RunStages(self):
+    """Run something after sync/reexec."""
+    self._RunStage(BrilloCleanStage)
+    self._RunStage(BrilloSyncStage)
+    self._RunStage(BrilloBuildStage)

config_dump.json

+{
+    "_default": {
+        "boards": [],
+        "manifest_repo_url": "https://chromium.googlesource.com/chromiumos/chromite/abuildbot_config"
+    },
+    "_site_params": {
+        "ARCHIVE_URL": "gs://abuildbot-build-archive/bbuildbot"
+    },
+    "_templates": {},
+
+    "bbuildbot": {
+        "builder_class_name": "config.builders.brillo_builders.BrilloBuilder",
+        "brillo_manifest_url": "https://android.googlesource.com/brillo/manifest",
+        "brillo_manifest_branch": "master"
+    }
+}

default.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<manifest>
+  <remote  name="cros"
+           fetch="https://chromium.googlesource.com"
+           review="https://chromium-review.googlesource.com" />
+
+  <remote  name="cros-internal"
+           fetch="https://chrome-internal.googlesource.com"
+           review="https://chrome-internal-review.googlesource.com" />
+
+  <default revision="refs/heads/master"
+           remote="cros" sync-j="8" />
+
+  <notice>
+Your sources have been sync'd successfully.
+  </notice>
+
+  <project path="chromite" name="chromiumos/chromite" />
+  <project path="chromite/config" name="brillo/bbuildbot_config"
+           remote="cros-internal" />
+
+  <!-- To get requirements for cros lint -->
+  <project path="chromium/tools/depot_tools"
+           name="chromium/tools/depot_tools"
+           revision="b6795643ec0305ba2ff862fcd0f450756aa5e58c" />
+</manifest>