Add infrastructure to download golang and build AppRTC collider.

download_golang.py

Index: download_golang.py
===================================================================
--- download_golang.py	(revision 0)
+++ download_golang.py	(working copy)
@@ -0,0 +1,57 @@
+#!/usr/bin/python
+# Copyright 2013 The Chromium Authors. All rights reserved.

[kjellander_chromium, 2014/12/08 13:58:08]

year 2014

[phoglund_chromium, 2014/12/08 14:26:16]

Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Downloads the golang SDK from WebRTC storage and unpacks it.
+
+Requires that depot_tools is installed and in the PATH. This script expects
+to run with Chrome's base dir as the working directory, e.g. where the .gclient
+file is. This is what should happen if this script is invoked as a hook action.
+"""
+
+import os
+import subprocess
+import sys
+import tarfile
+import zipfile
+
+import utils
+

[kjellander_chromium, 2014/12/08 13:58:08]

+ 1 blank line

[phoglund_chromium, 2014/12/08 14:26:16]

Done.

+def _DownloadFilesFromGoogleStorage(webrtc_deps_path):
+  print 'Downloading files in %s...' % webrtc_deps_path
+
+  extension = 'bat' if 'win32' in sys.platform else 'py'
+  cmd = ['download_from_google_storage.%s' % extension,
+         '--bucket=chromium-webrtc-resources',
+         '--auto_platform',
+         '--recursive',
+         '--directory', webrtc_deps_path]
+  subprocess.check_call(cmd)
+
+
+def _GetGoArchivePathForPlatform():
+  archive_extension = 'zip' if utils.GetPlatform() == 'win' else 'tar.gz'
+  return os.path.join(utils.GetPlatform(), 'go.%s' % archive_extension)
+
+
+def main(argv):
+  if len(argv) == 1:
+    return 'Usage: %s <path to webrtc.DEPS>' % argv[0]
+  if not os.path.exists('.gclient'):
+    return 'Invoked from wrong dir; invoke from dir with .gclient'
+
+  webrtc_deps_path = argv[1]
+  golang_path = os.path.join(webrtc_deps_path, 'golang')
+  archive_path = os.path.join(golang_path, _GetGoArchivePathForPlatform())
+  old_archive_sha1 = utils.ComputeSHA1(archive_path)
+
+  _DownloadFilesFromGoogleStorage(golang_path)
+
+  if old_archive_sha1 != utils.ComputeSHA1(archive_path):
+    utils.DeleteDirNextToGclient('go')
+    utils.UnpackToWorkingDir(archive_path)
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))
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