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254 lines
9.8 KiB
254 lines
9.8 KiB
# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from __future__ import unicode_literals
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import argparse
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import logging
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import os
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import shutil
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import subprocess
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import tempfile
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import traceback
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import time
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from inferlib import config, issues, utils
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from . import util
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import re
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MODULE_NAME = __name__
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MODULE_DESCRIPTION = '''Run analysis of code built with a command like:
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buck [options] [target]
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Analysis examples:
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infer --buck-clang -- buck build HelloWorld'''
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LANG = ['clang']
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KEEP_GOING_OPTION = "--keep-going"
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def gen_instance(*args):
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return BuckAnalyzer(*args)
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def string_in_quotes(value):
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return value.strip('\'')
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def create_argparser(group_name=MODULE_NAME):
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"""This defines the set of arguments that get added by this module to the
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set of global args defined in the infer top-level module
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Do not use this function directly, it should be invoked by the infer
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top-level module"""
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parser = argparse.ArgumentParser(add_help=False)
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group = parser.add_argument_group(
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'{grp} module'.format(grp=MODULE_NAME),
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description=MODULE_DESCRIPTION,
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)
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group.add_argument('--xcode-developer-dir',
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help='Specify the path to Xcode developer directory ')
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group.add_argument('--blacklist-regex',
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help='Specify the regex for files to skip during '
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'the analysis')
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group.add_argument('--Xbuck', action='append', default=[],
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type=string_in_quotes,
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help='Pass values as command-line arguments to '
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'invocations of `buck build`.'
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'NOTE: value should be wrapped in single quotes')
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group.add_argument('--buck-merge-all-deps',
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action='store_true',
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help='Find and merge all deps produced by buck')
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return parser
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class BuckAnalyzer:
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def __init__(self, args, cmd):
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self.args = args
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self.cmd = cmd
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self.keep_going = KEEP_GOING_OPTION in self.args.Xbuck
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util.log_java_version()
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logging.info(util.run_cmd_ignore_fail(['buck', '--version']))
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def capture(self):
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try:
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return self.capture_with_flavors()
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except subprocess.CalledProcessError as exc:
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if self.args.debug:
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traceback.print_exc()
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return exc.returncode
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def create_cxx_buck_configuration_args(self):
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# return a string that can be passed in input to buck
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# and configures the paths to infer/clang/plugin/xcode
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facebook_clang_plugins_root = config.FCP_DIRECTORY
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clang_path = os.path.join(
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facebook_clang_plugins_root,
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'clang',
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'install',
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'bin',
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'clang',
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)
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plugin_path = os.path.join(
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facebook_clang_plugins_root,
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'libtooling',
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'build',
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'FacebookClangPlugin.dylib',
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)
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args = [
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'--config',
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'client.id=infer.clang',
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'--config',
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'*//infer.infer_bin={bin}'
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.format(bin=config.BIN_DIRECTORY),
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'--config',
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'*//infer.clang_compiler={clang}'.format(clang=clang_path),
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'--config',
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'*//infer.clang_plugin={plugin}'.format(plugin=plugin_path),
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'--config',
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'*//cxx.pch_enabled=false',
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'--config', # Infer doesn't support C++ modules yet (T35656509)
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'*//cxx.modules_default=false',
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'--config',
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'*//cxx.modules=False',
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] + self.args.Xbuck
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if self.args.xcode_developer_dir is not None:
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args.append('--config')
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args.append('apple.xcode_developer_dir={devdir}'.format(
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devdir=self.args.xcode_developer_dir))
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if self.args.blacklist_regex:
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args.append('--config')
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args.append('*//infer.blacklist_regex={regex}'.format(
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regex=self.args.blacklist_regex))
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return args
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def _get_analysis_result_paths(self):
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# TODO(8610738): Make targets extraction smarter
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buck_results_cmd = [
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self.cmd[0],
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'targets',
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'--show-output'
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] + self.cmd[2:] + self.create_cxx_buck_configuration_args()
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buck_results_cmd = \
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[x for x in buck_results_cmd if x != KEEP_GOING_OPTION]
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proc = subprocess.Popen(buck_results_cmd, stdout=subprocess.PIPE)
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(buck_output, _) = proc.communicate()
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if proc.returncode != 0:
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return None
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# remove target name prefixes from each line and split them into a list
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out = [os.path.join(self.args.project_root, x.split(None, 1)[1])
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for x in buck_output.strip().split('\n')]
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return [os.path.dirname(x)
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if os.path.isfile(x) else x
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for x in out if os.path.exists(x)]
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@staticmethod
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def _merge_infer_dep_files(root_paths, merged_out_path):
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potential_dep_files = [os.path.join(p, config.INFER_BUCK_DEPS_FILENAME)
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for p in root_paths]
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dep_files = filter(os.path.exists, potential_dep_files)
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utils.merge_and_dedup_files_into_path(dep_files, merged_out_path)
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@staticmethod
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def _find_deps_and_merge(merged_out_path):
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"""This function is used to compute the infer-deps.txt file that
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contains the location of the infer-out folders with the captured
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files created by buck. This is needed when keep-going is passed
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to buck and there are compilation failures, because in that case
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buck doesn't create this file."""
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infer_out_folders = []
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start_time = time.time()
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print('finding captured files in buck-out...')
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for root, dirs, files in os.walk(config.BUCK_OUT_GEN):
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regex = re.compile('.*infer-out.*')
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folders = \
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[os.path.join(root, d) for d in dirs if re.match(regex, d)]
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for d in folders:
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if d not in infer_out_folders:
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infer_out_folders.append(d)
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with open(merged_out_path, 'w') as fmerged_out_path:
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for dir in infer_out_folders:
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fmerged_out_path.write('\t' + '\t' + dir + '\n')
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elapsed_time = time.time() - start_time
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print('time elapsed in finding captured files in buck-out: % 6.2fs'
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% elapsed_time)
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def _find_depsfiles_and_merge(self, merge_out_path):
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""" Sometimes buck targets --show-output gets confused and returns a
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folder that doesn't contain infer-deps.txt. This can happen with on
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for example objc targes with a certain combination of BUCK modes and
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flavours. This function will walk buck-out and find infer-deps.txt
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It will merge ALL infer-deps.txt in buck-out, so you might want
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to do a buck clean first."""
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fs = []
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for root, dirs, files in os.walk(config.BUCK_OUT_GEN):
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fs += [os.path.dirname(os.path.join(root, f)) for f in files
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if f == config.INFER_BUCK_DEPS_FILENAME]
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self._merge_infer_dep_files(fs, merge_out_path)
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def _move_buck_out(self):
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""" If keep-going is passed, we may need to compute the infer-deps
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file with the paths to the captured files. To make sure that
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this is done in a consistent way, we need to start the analysis
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with an empty buck-out folder."""
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if not os.path.exists(config.BUCK_OUT_TRASH):
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os.makedirs(config.BUCK_OUT_TRASH)
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tmp = tempfile.mkdtemp(
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dir=config.BUCK_OUT_TRASH,
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prefix=config.BUCK_OUT)
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print('moving files in ' + config.BUCK_OUT + ' to ' + tmp)
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for filename in os.listdir(config.BUCK_OUT):
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if filename != config.TRASH:
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shutil.move(os.path.join(config.BUCK_OUT, filename), tmp)
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def _run_buck_with_flavors(self):
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env_vars = utils.read_env()
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infer_args = env_vars['INFER_ARGS']
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if infer_args != '':
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infer_args += '^' # '^' must be CommandLineOption.env_var_sep
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infer_args += '--fcp-syntax-only'
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env_vars['INFER_ARGS'] = infer_args
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env = utils.encode_env(env_vars)
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command = self.cmd
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command += ['-j', str(self.args.multicore)]
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if self.args.load_average is not None:
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command += ['-L', str(self.args.load_average)]
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command += self.create_cxx_buck_configuration_args()
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try:
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subprocess.check_call(command, env=env)
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return os.EX_OK
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except subprocess.CalledProcessError as e:
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if self.keep_going:
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print('Buck failed, but continuing the analysis '
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'because --keep-going was passed')
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return -1
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else:
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raise e
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def capture_with_flavors(self):
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if self.keep_going and not self.args.continue_capture:
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self._move_buck_out()
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ret = self._run_buck_with_flavors()
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if not ret == os.EX_OK and not self.keep_going:
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return ret
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result_paths = self._get_analysis_result_paths()
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if result_paths is None:
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# huho, the Buck command to extract results paths failed
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return os.EX_SOFTWARE
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merged_deps_path = os.path.join(
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self.args.infer_out, config.INFER_BUCK_DEPS_FILENAME)
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if (not ret == os.EX_OK and self.keep_going):
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self._find_deps_and_merge(merged_deps_path)
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elif self.args.buck_merge_all_deps:
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self._find_depsfiles_and_merge(merged_deps_path)
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else:
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self._merge_infer_dep_files(result_paths, merged_deps_path)
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return os.EX_OK
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