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Unified Diff: generate_au_zip.py

Issue 4425004: Adding a script to generate au-geneate.zip file Base URL: ssh://git@gitrw.chromium.org:9222/crosutils.git@master
Patch Set: "Fixing code review comments" Created 10 years, 1 month ago
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Index: generate_au_zip.py
diff --git a/generate_au_zip.py b/generate_au_zip.py
new file mode 100755
index 0000000000000000000000000000000000000000..f49bee878a1101109954573b7fa79611e0b22d5e
--- /dev/null
+++ b/generate_au_zip.py
@@ -0,0 +1,263 @@
+#!/usr/bin/python
+
+# Copyright (c) 2010 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.
+
+"""
+ Script to generate a zip file of delta-generator and it's dependencies.
+"""
+import logging.handlers
+import optparse
+import os
+import re
+import shutil
+import subprocess
+import sys
+import tempfile
+
+# GLOBALS
+
+logging_format = '%(asctime)s - %(filename)s - %(levelname)-8s: %(message)s'
+date_format = '%Y/%m/%d %H:%M:%S'
+logging.basicConfig(level=logging.INFO, format=logging_format,
+ datefmt=date_format)
+
+def CreateTempDir():
+ """Creates a tempdir and returns the name of the tempdir."""
+ temp_dir = tempfile.mkdtemp(suffix='au', prefix='tmp')
+ logging.info('Using tempdir = %s', temp_dir)
+ return temp_dir
+
+
+def _SplitAndStrip(data):
+ """Prunes the ldd output, and return a list of needed library names
+ Example of data:
+ linux-vdso.so.1 => (0x00007ffffc96a000)
+ libbz2.so.1 => /lib/libbz2.so.1 (0x00007f3ff8782000)
+ libc.so.6 => /lib/libc.so.6 (0x00007f3ff83ff000)
+ /lib64/ld-linux-x86-64.so.2 (0x00007f3ff89b3000)
+ Args:
+ data: list of libraries from ldd output
+ Returns:
+ list of libararies that we should copy
+
+ """
+ return_list = []
+ for line in data.split('\n'):
+ line = re.sub('.*not a dynamic executable.*', '', line)
+ line = re.sub('.* =>\s+', '', line)
+ line = re.sub('\(0x.*\)\s?', '', line)
+ line = line.strip()
+ if not len(line):
+ continue
+ logging.debug('MATCHED line = %s', line)
+ return_list.append(line)
+
+ return return_list
+
+
+def DepsToCopy(ldd_files, black_list):
+ """Returns a list of deps for a given dynamic executables list.
+ Args:
+ ldd_files: List of dynamic files that needs to have the deps evaluated
+ black_list: List of files that we should ignore
+ Returns:
+ library_list: List of files that are dependencies
+ """
+ for file_name in ldd_files:
+ logging.info('Running ldd on %s', file_name)
+ cmd = ['/usr/bin/ldd', file_name]
+ stdout_data = ''
+ stderr_data = ''
+
+ try:
+ proc = subprocess.Popen(cmd, stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+ (stdout_data, stderr_data) = proc.communicate(input=None)
+ except subprocess.CalledProcessError, e:
+ logging.error('Command %s failed', cmd)
+ logging.error('error code %s', e.returncode)
+ logging.error('ouput %s', e.output)
+ raise
+
+ library_list = []
+ if not stdout_data:
+ return library_list
+
+ logging.debug('ldd for %s = stdout = %s stderr =%s', file_name,
+ stdout_data, stderr_data)
+
+ library_list = _SplitAndStrip(stdout_data)
+
+ return _ExcludeBlacklist(library_list, black_list)
+
+
+def CopyRequiredFiles(dest_files_root):
+ """Generates a list of files that are required for au-generator zip file
+ Args:
+ dest_files_root: location of the directory where we should copy the files
+ """
+ if not dest_files_root:
+ logging.error('Invalid option passed for dest_files_root')
+ sys.exit(1)
+ # Files that need to go through ldd
+ ldd_files = ['/usr/bin/delta_generator', '/usr/bin/bsdiff',
+ '/usr/bin/bspatch', '/usr/bin/cgpt']
+ # statically linked files and scripts etc.,
+ static_files = ['~/trunk/src/scripts/common.sh',
+ '~/trunk/src/scripts/cros_generate_update_payload',
+ '~/trunk/src/scripts/chromeos-common.sh']
+ # We need directories to be copied recursively to a destination within tempdir
+ recurse_dirs = {'~/trunk/src/scripts/lib/shflags': 'lib/shflags'}
+
+ black_list = [
+ 'linux-vdso.so',
+ 'libgcc_s.so',
+ 'libgthread-2.0.so',
+ 'libpthread.so',
+ 'librt.so',
+ 'libstdc',
+ 'libgcc_s.so',
+ 'libc.so',
+ 'ld-linux-x86-64',
+ 'libm.so',
+ 'libdl.so',
+ 'libresolv.so',
+ ]
+
+ all_files = ldd_files + static_files
+ all_files = map(os.path.expanduser, all_files)
+
+ for file_name in all_files:
+ if not os.path.isfile(file_name):
+ logging.error('file = %s does not exist', file_name)
+ sys.exit(1)
+
+ logging.debug('Given files that need to be copied = %s' .join(all_files))
scottz-goog 2010/11/11 20:55:18 % ' '.join(all_files)
+ all_files += DepsToCopy(ldd_files=ldd_files,black_list=black_list)
+ for file_name in all_files:
+ logging.info('Copying file %s to %s', file_name, dest_files_root)
+ shutil.copy2(file_name, dest_files_root)
+
+ for source_dir, target_dir in recurse_dirs.iteritems():
+ logging.info('Processing directory %s', source_dir)
+ full_path = os.path.expanduser(source_dir)
+ if not os.path.isdir(full_path):
+ logging.error("Directory given for %s expanded to %s doens't exist.",
+ source_dir, full_path)
+ sys.exit(1)
+ dest = os.path.join(dest_files_root, target_dir)
+ logging.info('Copying directory %s to %s.', full_path, target_dir)
+ shutil.copytree(full_path, dest)
+
+def CleanUp(temp_dir):
+ """Cleans up the tempdir
+ Args:
+ temp_dir = name of the directory to cleanup
+ """
+ if os.path.exists(temp_dir):
+ shutil.rmtree(temp_dir, ignore_errors=True)
+ logging.info('Removed tempdir = %s', temp_dir)
+
+def GenerateZipFile(base_name, root_dir):
+ """Returns true if able to generate zip file
+ Args:
+ base_name: name of the zip file
+ root_dir: location of the directory that we should zip
+ Returns:
+ True if successfully generates the zip file otherwise False
+ """
+ logging.info('Generating zip file %s with contents from %s', base_name,
+ root_dir)
+ current_dir = os.getcwd()
+ os.chdir(root_dir)
+ try:
+ subprocess.Popen(['zip', '-r', '-9', base_name, '.'],
+ stdout=subprocess.PIPE).communicate()[0]
scottz-goog 2010/11/11 20:55:18 align stdout with ['z..
+ except OSError, e:
+ logging.error('Execution failed:%s', e.strerror)
+ return False
+ finally:
+ os.chdir(current_dir)
+
+ return True
+
+
+def _ExcludeBlacklist(library_list, black_list=[]):
+ """Deletes the set of files from black_list from the library_list
+ Args:
+ library_list: List of the library names to filter through black_list
+ black_list: List of the black listed names to filter
+ Returns:
+ Filtered library_list
+ """
+ return_list = []
+ pattern = re.compile(r'|'.join(black_list))
+
+ logging.debug('PATTERN: %s=', pattern)
+
+ for library in library_list:
+ if pattern.search(library):
+ logging.debug('BLACK-LISTED = %s=', library)
+ continue
+ return_list.append(library)
+
+ logging.debug('Returning return_list=%s=', return_list)
+
+ return return_list
+
+
+def CopyZipToFinalDestination(output_dir, zip_file_name):
+ """Copies the generated zip file to a final destination
+ Args:
+ output_dir: Directory where the file should be copied to
+ zip_file_name: name of the zip file that should be copied
+ Returns:
+ True on Success False on Failure
+ """
+ if not os.path.isfile(zip_file_name):
+ logging.error("Zip file %s doesn't exist. Returning False", zip_file_name)
+ return False
+
+ if not os.path.isdir(output_dir):
+ logging.debug('Creating %s', output_dir)
+ os.makedirs(output_dir)
+ logging.info('Copying %s to %s', zip_file_name, output_dir)
+ shutil.copy2(zip_file_name, output_dir)
+ return True
+
+
+def main():
+ """Main function to start the script"""
+ parser = optparse.OptionParser()
+
+ parser.add_option( '-d', '--debug', dest='debug', action='store_true',
+ default=False, help='Verbose Default: False',)
+ parser.add_option('-o', '--output-dir', dest='output_dir',
+ default='/tmp/au-generator',
+ help='Specify the output location for copying the zipfile')
+ parser.add_option('-z', '--zip-name', dest='zip_name',
+ default='au-generator.zip', help='Name of the zip file')
+ parser.add_option('-k', '--keep-temp', dest='keep_temp', default=False,
+ action='store_true', help='Keep the temp files...',)
+
+ (options, args) = parser.parse_args()
+ if options.debug:
+ logging.setLevel(logging.DEBUG)
+
+ logging.debug('Options are %s ', options)
+
+ temp_dir = CreateTempDir()
+ dest_files_root = os.path.join(temp_dir, 'au-generator')
+ os.makedirs(dest_files_root)
+ CopyRequiredFiles(dest_files_root=dest_files_root)
+ zip_file_name = os.path.join(temp_dir, options.zip_name)
+ GenerateZipFile(zip_file_name, dest_files_root)
+ CopyZipToFinalDestination(options.output_dir, zip_file_name)
+
+ if not options.keep_temp:
+ CleanUp(temp_dir)
+
+if __name__ == '__main__':
+ main()
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