Add script to download SDK, system images and create and start AVDs for testing.

build/android/install_emulator_deps.py

Index: build/android/install_emulator_deps.py
diff --git a/build/android/install_emulator_deps.py b/build/android/install_emulator_deps.py
new file mode 100755
index 0000000000000000000000000000000000000000..ff84367a7ec0bf7fed7d4a890cf0ae79c411ca66
--- /dev/null
+++ b/build/android/install_emulator_deps.py
@@ -0,0 +1,147 @@
+#!/usr/bin/env python
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Installs deps for using SDK emulator for testing.
+
+The script will download the SDK and system images, if they are not present, and
+install and enable KVM, if virtualization has been enabled in the BIOS.
+"""
+
+
+import logging
+import os
+import shutil
+import subprocess
+import sys
+
+from pylib import cmd_helper
+from pylib import constants
+from pylib.utils import run_tests_helper
+
+# From the Android Developer's website.
+SDK_BASE_URL = 'http://dl.google.com/android/adt'
+SDK_ZIP = 'adt-bundle-linux-x86_64-20130219.zip'
+
+# Android x86 system image from the Intel website:
+# http://software.intel.com/en-us/articles/intel-eula-x86-android-4-2-jelly-bean-bin
+X86_IMG_URL = 'http://download-software.intel.com/sites/landingpage/android/sysimg_x86-17_r01.zip'
+
+# Android API level
+API_TARGET = 'android-%s' % constants.ANDROID_SDK_VERSION
+
+
+def CheckSDK():
+  """Check if SDK is already installed.
+
+  Returns:
+    True if android_tools directory exists in current directory.
+  """
+  return os.path.exists(os.path.join(constants.EMULATOR_SDK_ROOT,
+                                     'android_tools'))
+
+
+def CheckX86Image():
+  """Check if Android system images have been installed.
+
+  Returns:
+    True if android_tools/sdk/system-images directory exists.
+  """
+  return os.path.exists(os.path.join(constants.EMULATOR_SDK_ROOT,
+                                     'android_tools', 'sdk', 'system-images',
+                                     API_TARGET, 'x86'))
+
+
+def CheckKVM():
+  """Check if KVM is enabled.
+
+  Returns:
+    True if kvm-ok returns 0 (already enabled)
+  """
+  rc = cmd_helper.RunCmd(['kvm-ok'])
+  return not rc
+
+
+def GetSDK():
+  """Download the SDK and unzip in android_tools directory."""
+  logging.info('Download Android SDK.')
+  sdk_url = '%s/%s' % (SDK_BASE_URL, SDK_ZIP)
+  try:
+    cmd_helper.RunCmd(['curl', '-o', '/tmp/sdk.zip', sdk_url])
+    print 'curled unzipping...'
+    rc = cmd_helper.RunCmd(['unzip', '-o', '/tmp/sdk.zip', '-d', '/tmp/'])
+    if rc:
+      logging.critical('ERROR: could not download/unzip Android SDK.')
+      raise
+    # Get the name of the sub-directory that everything will be extracted to.
+    dirname, _ = os.path.splitext(SDK_ZIP)
+    zip_dir = '/tmp/%s' % dirname
+    # Move the extracted directory to EMULATOR_SDK_ROOT
+    dst = os.path.join(constants.EMULATOR_SDK_ROOT, 'android_tools')
+    shutil.move(zip_dir, dst)
+  finally:
+    os.unlink('/tmp/sdk.zip')
+
+
+def InstallKVM():
+  """Installs KVM packages."""
+  rc = cmd_helper.RunCmd(['sudo', 'apt-get', 'install', 'kvm'])
+  if rc:
+    logging.critical('ERROR: Did not install KVM. Make sure hardware '
+                     'virtualization is enabled in BIOS (i.e. Intel VT-x or '
+                     'AMD SVM).')
+  # TODO(navabi): Use modprobe kvm-amd on AMD processors.
+  rc = cmd_helper.RunCmd(['sudo', 'modprobe', 'kvm-intel'])
+  if rc:
+    logging.critical('ERROR: Did not add KVM module to Linux Kernal. Make sure '
+                     'hardware virtualization is enabled in BIOS.')
+  # Now check to ensure KVM acceleration can be used.
+  rc = cmd_helper.RunCmd(['kvm-ok'])
+  if rc:
+    logging.critical('ERROR: Can not use KVM acceleration. Make sure hardware '
+                     'virtualization is enabled in BIOS (i.e. Intel VT-x or '
+                     'AMD SVM).')
+
+
+def GetX86Image():
+  """Download x86 system image from Intel's website."""
+  logging.info('Download x86 system image directory into sdk directory.')
+  try:
+    cmd_helper.RunCmd(['curl', '-o', '/tmp/x86_img.zip', X86_IMG_URL])
+    rc = cmd_helper.RunCmd(['unzip', '-o', '/tmp/x86_img.zip', '-d', '/tmp/'])
+    if rc:
+      logging.critical('ERROR: Could not download/unzip image zip.')
+      raise
+    sys_imgs = os.path.join(constants.EMULATOR_SDK_ROOT, 'android_tools', 'sdk',
+                            'system-images', API_TARGET, 'x86')
+    shutil.move('/tmp/x86', sys_imgs)
+  finally:
+    os.unlink('/tmp/x86_img.zip')
+
+
+def main(argv):
+  logging.basicConfig(level=logging.INFO,
+                      format='# %(asctime)-15s: %(message)s')
+  run_tests_helper.SetLogLevel(verbose_count=1)
+
+  # Calls below will download emulator SDK and/or system images only if needed.
+  if CheckSDK():
+    logging.info('android_tools directory already exists (not downloading).')
+  else:
+    GetSDK()
+
+  if CheckX86Image():
+    logging.info('system-images directory already exists.')
+  else:
+    GetX86Image()
+
+  # Make sure KVM packages are installed and enabled.
+  if CheckKVM():
+    logging.info('KVM already installed and enabled.')
+  else:
+    InstallKVM()
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))