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92 lines
2.8 KiB
Python
Executable File
92 lines
2.8 KiB
Python
Executable File
#!/usr/bin/python
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# Copyright 2015 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""
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Downloads Go binaries from Google Cloud Storage and extracts them to
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INSTALL_DIR, updating INSTALL_DIR/VERSION stamp file with current version.
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Does nothing if INSTALL_DIR/VERSION is already up to date.
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"""
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import os
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import shutil
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import subprocess
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import sys
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import tarfile
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# Path constants. (All of these should be absolute paths.)
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THIS_DIR = os.path.abspath(os.path.dirname(__file__))
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MOJO_DIR = os.path.abspath(os.path.join(THIS_DIR, '..', '..'))
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# Should be the same as in upload.py.
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INSTALL_DIR = os.path.join(MOJO_DIR, 'third_party', 'go', 'tool')
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sys.path.insert(0, os.path.join(MOJO_DIR, 'tools'))
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import find_depot_tools
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DEPOT_PATH = find_depot_tools.add_depot_tools_to_path()
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GSUTIL_PATH = os.path.join(DEPOT_PATH, 'gsutil.py')
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def RunCommand(command):
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"""Run command and return success (True) or failure."""
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print 'Running %s' % (str(command))
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if subprocess.call(command, shell=False) == 0:
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return True
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print 'Failed.'
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return False
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def VersionFileName():
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if sys.platform.startswith('linux'):
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platform_suffix = 'LINUX'
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elif sys.platform == 'darwin':
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platform_suffix = 'MACOSX'
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else:
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raise Exception('unsupported platform: ' + sys.platform)
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return 'VERSION_' + platform_suffix
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def GetInstalledVersion():
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version_file = os.path.join(INSTALL_DIR, VersionFileName())
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if not os.path.exists(version_file):
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return None
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with open(version_file) as f:
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return f.read().strip()
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def InstallGoBinaries(version):
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"""Downloads zipped go binaries from Google Cloud Storage and extracts them,
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stamping current version."""
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# Remove current installation.
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if os.path.exists(INSTALL_DIR):
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shutil.rmtree(INSTALL_DIR)
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os.mkdir(INSTALL_DIR)
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# Download go tool binaries from GCS.
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archive_path = os.path.join(INSTALL_DIR, 'go.tar.gz')
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download_cmd = ['python', GSUTIL_PATH, '-b', 'cp',
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'gs://mojo/go/tool/%s.tar.gz' % version,
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archive_path]
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if not RunCommand(download_cmd):
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print ('WARNING: Failed to download Go tool binaries.')
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return
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print "Extracting Go binaries."
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with tarfile.open(archive_path) as arch:
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arch.extractall(INSTALL_DIR)
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os.remove(archive_path)
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# Write version as the last step.
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with open(os.path.join(INSTALL_DIR, VersionFileName()), 'w+') as f:
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f.write('%s\n' % version)
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def main():
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# Read latest version.
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version = ''
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with open(os.path.join(THIS_DIR, VersionFileName())) as f:
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version = f.read().strip()
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# Return if installed binaries are up to date.
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if version == GetInstalledVersion():
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return
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InstallGoBinaries(version)
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if __name__ == '__main__':
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sys.exit(main())
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