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#!/usr/bin/env python2.7
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# Copyright (c) 2013 - present Facebook, Inc.
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# All rights reserved.
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#
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# This source code is licensed under the BSD style license found in the
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# LICENSE file in the root directory of this source tree. An additional grant
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# of patent rights can be found in the PATENTS file in the same directory.
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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 json
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import logging
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import os
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import shutil
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import stat
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import subprocess
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import sys
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import tempfile
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import time
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import zipfile
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from inferlib import config, issues, utils
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ANALYSIS_SUMMARY_OUTPUT = 'analysis_summary.txt'
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DEFAULT_BUCK_OUT = os.path.join(utils.decode(os.getcwd()), 'buck-out')
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DEFAULT_BUCK_OUT_GEN = os.path.join(DEFAULT_BUCK_OUT, 'gen')
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INFER_JSON_REPORT = os.path.join(config.BUCK_INFER_OUT,
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config.JSON_REPORT_FILENAME)
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INFER_SCRIPT = """\
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#!/usr/bin/env {python_executable}
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import subprocess
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import sys
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cmd = {infer_command} + ['--', 'javac'] + sys.argv[1:]
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subprocess.check_call(cmd)
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"""
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def prepare_build(args):
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"""Creates script that redirects javac calls to infer and a local buck
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configuration that tells buck to use that script.
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"""
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infer_options = ['--buck']
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if args.java_jar_compiler is not None:
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infer_options += [
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'--java-jar-compiler',
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args.java_jar_compiler,
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]
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# Create a temporary directory as a cache for jar files.
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infer_cache_dir = os.path.join(args.infer_out, 'cache')
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if not os.path.isdir(infer_cache_dir):
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os.mkdir(infer_cache_dir)
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infer_options += ['--infer-cache', infer_cache_dir]
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temp_files = [infer_cache_dir]
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try:
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infer_command = [utils.get_cmd_in_bin_dir('infer')] + infer_options
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except subprocess.CalledProcessError as e:
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logging.error('Could not find infer')
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raise e
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# make sure INFER_ANALYSIS is set when buck is called
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logging.info('Setup Infer analysis mode for Buck: export INFER_ANALYSIS=1')
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os.environ['INFER_ANALYSIS'] = '1'
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# Create a script to be called by buck
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infer_script = None
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with tempfile.NamedTemporaryFile(delete=False,
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prefix='infer_',
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suffix='.py',
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dir='.') as infer_script:
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logging.info('Creating %s' % infer_script.name)
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infer_script.file.write(
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utils.encode(INFER_SCRIPT.format(
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python_executable=sys.executable,
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infer_command=infer_command)))
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st = os.stat(infer_script.name)
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os.chmod(infer_script.name, st.st_mode | stat.S_IEXEC)
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temp_files += [infer_script.name]
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return temp_files, infer_script.name
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def get_normalized_targets(targets):
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""" Use buck to convert a list of input targets/aliases
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into a set of the (transitive) target deps for all inputs"""
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# this expands the targets passed on the command line, then filters away
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# targets that are not Java/Android. you need to change this if you
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# care about something other than Java/Android
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TARGET_TYPES = "kind('android_library|java_library', deps('%s'))"
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BUCK_GET_JAVA_TARGETS = ['buck', 'query', TARGET_TYPES]
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buck_cmd = BUCK_GET_JAVA_TARGETS + targets
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try:
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targets = filter(
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lambda line: len(line) > 0,
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subprocess.check_output(buck_cmd).decode().strip().split('\n'))
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return targets
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except subprocess.CalledProcessError as e:
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logging.error('Error while expanding targets with {0}'.format(
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buck_cmd))
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raise e
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class NotFoundInJar(Exception):
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pass
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def load_json_report(opened_jar):
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try:
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return json.loads(opened_jar.read(INFER_JSON_REPORT).decode())
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except KeyError:
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raise NotFoundInJar
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def get_output_jars(targets):
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if len(targets) == 0:
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return []
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else:
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audit_output = subprocess.check_output(
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['buck', 'audit', 'classpath'] + targets)
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classpath_jars = audit_output.strip().split('\n')
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return filter(os.path.isfile, classpath_jars)
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def collect_results(args, start_time, targets):
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"""Walks through buck-gen, collects results for the different buck targets
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and stores them in in args.infer_out/results.csv.
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"""
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all_json_rows = set()
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for path in get_output_jars(targets):
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try:
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with zipfile.ZipFile(path) as jar:
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json_rows = load_json_report(jar)
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for row in json_rows:
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all_json_rows.add(json.dumps(row))
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except NotFoundInJar:
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pass
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except zipfile.BadZipfile:
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logging.warn('Bad zip file %s', path)
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json_report = os.path.join(args.infer_out, config.JSON_REPORT_FILENAME)
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with open(json_report, 'w') as report:
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json_string = '['
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json_string += ','.join(all_json_rows)
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json_string += ']'
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report.write(json_string)
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report.flush()
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bugs_out = os.path.join(args.infer_out, config.BUGS_FILENAME)
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issues.print_and_save_errors(args.infer_out, args.project_root,
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json_report, bugs_out, args.pmd_xml)
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shutil.copy(bugs_out, os.path.join(args.infer_out,
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ANALYSIS_SUMMARY_OUTPUT))
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def cleanup(temp_files):
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"""Removes the temporary infer files.
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"""
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for file in temp_files:
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try:
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logging.info('Removing %s' % file)
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if os.path.isdir(file):
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shutil.rmtree(file)
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else:
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os.unlink(file)
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except IOError:
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logging.error('Could not remove %s' % file)
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parser = argparse.ArgumentParser()
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parser.add_argument('--build-report', metavar='PATH', type=utils.decode)
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parser.add_argument('--deep', action='store_true')
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parser.add_argument('--keep-going', action='store_true')
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parser.add_argument('--load-limit', '-L')
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parser.add_argument('--no-cache', action='store_true')
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parser.add_argument('--profile', action='store_true')
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parser.add_argument('--shallow', action='store_true')
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parser.add_argument('--num-threads', '-j', metavar='N')
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parser.add_argument('--verbose', '-v', metavar='N', type=int)
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parser.add_argument('targets', nargs='*', metavar='target',
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help='Build targets to analyze')
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class UnsuportedBuckCommand(Exception):
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pass
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def parse_buck_command(args):
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build_keyword = 'build'
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if build_keyword in args and len(args[args.index(build_keyword):]) > 1:
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next_index = args.index(build_keyword) + 1
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buck_args = args[next_index:]
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parsed_args = parser.parse_args(buck_args)
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base_cmd_without_targets = [p for p in buck_args
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if p not in parsed_args.targets]
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base_cmd = ['buck', build_keyword] + base_cmd_without_targets
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return base_cmd, parsed_args
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else:
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raise UnsuportedBuckCommand(args)
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class Wrapper:
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def __init__(self, infer_args, buck_cmd):
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self.timer = utils.Timer(logging.info)
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# The reactive mode is not yet supported
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if infer_args.reactive:
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sys.stderr.write(
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'Reactive is not supported for Java Buck project. Exiting.\n')
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sys.exit(1)
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self.infer_args = infer_args
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self.timer.start('Computing library targets')
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base_cmd, buck_args = parse_buck_command(buck_cmd)
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self.buck_args = buck_args
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self.normalized_targets = get_normalized_targets(
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buck_args.targets)
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self.buck_cmd = base_cmd + self.normalized_targets
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self.timer.stop('%d targets computed', len(self.normalized_targets))
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def _collect_results(self, start_time):
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self.timer.start('Collecting results ...')
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collect_results(self.infer_args, start_time, self.normalized_targets)
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self.timer.stop('Done')
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def run(self):
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temp_files = []
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start_time = time.time()
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try:
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logging.info('Starting the analysis')
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if not os.path.isdir(self.infer_args.infer_out):
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os.mkdir(self.infer_args.infer_out)
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self.timer.start('Preparing build ...')
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temp_files2, infer_script = prepare_build(self.infer_args)
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temp_files += temp_files2
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self.timer.stop('Build prepared')
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if len(self.normalized_targets) == 0:
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logging.info('Nothing to analyze')
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else:
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self.timer.start('Running Buck ...')
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javac_config = ['--config', 'tools.javac=' + infer_script]
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buck_cmd = self.buck_cmd + javac_config
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subprocess.check_call(buck_cmd)
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self.timer.stop('Buck finished')
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self._collect_results(start_time)
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return os.EX_OK
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except KeyboardInterrupt as e:
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self.timer.stop('Exiting')
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sys.exit(0)
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except subprocess.CalledProcessError as e:
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if self.buck_args.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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self._collect_results(start_time)
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return os.EX_OK
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raise e
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finally:
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cleanup(temp_files)
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