Update monet.

tools/go/upload.py

Index: tools/go/upload.py
diff --git a/tools/go/upload.py b/tools/go/upload.py
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+#!/usr/bin/python
+# Copyright 2015 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.
+
+"""
+This script takes linux Go binaries, builds android binaries with NDK tool chain
+configured with NDK_PLATFORM and NDK_TOOLCHAIN parameters, zips the stuff and
+uploads it to Google Cloud Storage at gs://mojo/go/tool. It also produces
+the VERSION file with the sha1 code of the uploaded archive.
+
+This script operates in the INSTALL_DIR directory, so it automatically updates
+your current installation of the go binaries on success. On failure it
+invalidates your current installation; to fix it, run download.py.
+
+In order to use it, you need:
+- depot_tools in your path
+- installed android build deps
+- WRITE access to GCS
+
+To update go tool binaries you need to
+1) run 'gsutil.py config' to update initialize gsutil's credentials
+2) run this script: python upload.py path/to/go/binaries.tar.gz
+3) push new version of file 'VERSION'
+
+This script doesn't check if current version is already up to date, as the
+produced tar.gz archive is slightly different every time since it includes
+timestamps.
+"""
+
+import hashlib
+import os
+import shutil
+import subprocess
+import sys
+import tarfile
+import tempfile
+
+NDK_PLATFORM = 'android-14'
+NDK_TOOLCHAIN = 'arm-linux-androideabi-4.9'
+
+# Path constants. (All of these should be absolute paths.)
+THIS_DIR = os.path.abspath(os.path.dirname(__file__))
+MOJO_DIR = os.path.abspath(os.path.join(THIS_DIR, '..', '..'))
+# Should be the same as in download.py.
+INSTALL_DIR = os.path.join(MOJO_DIR, 'third_party', 'go', 'tool')
+
+sys.path.insert(0, os.path.join(MOJO_DIR, 'tools'))
+import find_depot_tools
+
+DEPOT_PATH = find_depot_tools.add_depot_tools_to_path()
+GSUTIL_PATH = os.path.join(DEPOT_PATH, 'gsutil.py')
+
+def RunCommand(command, env=None):
+  """Run command and return success (True) or failure."""
+
+  print 'Running %s' % (str(command))
+  if subprocess.call(command, shell=False, env=env) == 0:
+    return True
+  print 'Failed.'
+  return False
+
+def VersionFileName():
+  if sys.platform.startswith('linux'):
+    platform_suffix = 'LINUX'
+  elif sys.platform == 'darwin':
+    platform_suffix = 'MACOSX'
+  else:
+    raise Exception('unsupported platform: ' + sys.platform)
+  return 'VERSION_' + platform_suffix
+
+def HostArchName():
+  if sys.platform.startswith('linux'):
+    arch = 'linux_amd64'
+  elif sys.platform == 'darwin':
+    arch = 'darwin_amd64'
+  else:
+    raise Exception('unsupported platform: ' + sys.platform)
+  return arch
+
+def ExtractBinaries(archive_path):
+  """Extracts go binaries from the given tar file to INSTALL_DIR."""
+
+  if os.path.exists(INSTALL_DIR):
+    shutil.rmtree(INSTALL_DIR)
+  os.mkdir(INSTALL_DIR)
+  archive_path = os.path.abspath(archive_path)
+  with tarfile.open(archive_path) as arch:
+    arch.extractall(INSTALL_DIR)
+    os.rename(os.path.join(INSTALL_DIR, 'go'),
+              os.path.join(INSTALL_DIR, HostArchName()))
+
+def BuildGoAndroid():
+  go_host = os.path.join(INSTALL_DIR, HostArchName())
+  go_android = os.path.join(INSTALL_DIR, 'android_arm')
+  # Copy go sources and remove binaries to keep only that we generate.
+  shutil.copytree(go_host, go_android)
+  shutil.rmtree(os.path.join(go_android, 'bin'))
+  shutil.rmtree(os.path.join(go_android, 'pkg'))
+  # Prepare the Android NDK tool chain.
+  os.chdir(os.path.join(MOJO_DIR, 'third_party', 'android_tools', 'ndk'))
+  ndk_out_dir = tempfile.mkdtemp(prefix='android_ndk')
+  script_path = os.path.join('build', 'tools', 'make-standalone-toolchain.sh')
+  make_toolchain_cmd = ['bash', script_path, '--platform=%s' % NDK_PLATFORM,
+                        '--toolchain=%s' % NDK_TOOLCHAIN,
+                        '--install-dir=%s' % ndk_out_dir]
+  if not RunCommand(make_toolchain_cmd):
+    print "Faild to build the Android NDK tool chain."
+    sys.exit(1)
+  # Configure environment variables.
+  cc = os.path.join(ndk_out_dir, 'bin', 'arm-linux-androideabi-gcc')
+  env = os.environ.copy()
+  env["GOROOT"] = go_host
+  env["GOROOT_BOOTSTRAP"] = go_host
+  env["CC_FOR_TARGET"] = '%s' % cc
+  env["CGO_ENABLED"] = '1'
+  env["GOOS"] = 'android'
+  env["GOARCH"] = 'arm'
+  env["GOARM"] = '7'
+  # Build go tool.
+  os.chdir(os.path.join(go_android, 'src'))
+  make_command = ['bash', 'make.bash']
+  if not RunCommand(make_command, env=env):
+    print "Failed to make go tool for android."
+    sys.exit(1)
+  shutil.rmtree(ndk_out_dir)
+
+def Compress():
+  """Compresses the go tool into tar.gz and generates sha1 code, renames the
+     archive to sha1.tar.gz and returns the sha1 code."""
+
+  print "Compressing go tool, this may take several minutes."
+  os.chdir(INSTALL_DIR)
+  with tarfile.open(os.path.join('a.tar.gz'), 'w|gz') as arch:
+    arch.add('android_arm')
+    arch.add(HostArchName())
+
+  sha1 = ''
+  with open(os.path.join(INSTALL_DIR, 'a.tar.gz')) as f:
+    sha1 = hashlib.sha1(f.read()).hexdigest()
+  os.rename(os.path.join(INSTALL_DIR, 'a.tar.gz'),
+            os.path.join(INSTALL_DIR, '%s.tar.gz' % sha1))
+  return sha1
+
+def Upload(sha1):
+  """Uploads INSTALL_DIR/sha1.tar.gz to Google Cloud Storage under
+     gs://mojo/go/tool and writes sha1 to THIS_DIR/VERSION."""
+
+  file_name = '%s.tar.gz' % sha1
+  upload_cmd = ['python', GSUTIL_PATH, 'cp',
+                '-n', # Do not upload if the file already exists.
+                os.path.join(INSTALL_DIR, file_name),
+                'gs://mojo/go/tool/%s' % file_name]
+
+  print "Uploading go tool to GCS."
+  if not RunCommand(upload_cmd):
+    print "Failed to upload go tool to GCS."
+    sys.exit(1)
+  os.remove(os.path.join(INSTALL_DIR, file_name))
+  # Write versions as the last step.
+  stamp_file = os.path.join(THIS_DIR, VersionFileName())
+  with open(stamp_file, 'w+') as stamp:
+    stamp.write('%s\n' % sha1)
+
+  stamp_file = os.path.join(INSTALL_DIR, VersionFileName())
+  with open(stamp_file, 'w+') as stamp:
+    stamp.write('%s\n' % sha1)
+
+def main():
+  ExtractBinaries(sys.argv[1])
+  BuildGoAndroid()
+  sha1 = Compress()
+  Upload(sha1)
+  print "Done."
+
+if __name__ == '__main__':
+  sys.exit(main())