python/test_coverage/coverage_daemon.py

0001 #
0002 # Licensed to the Apache Software Foundation (ASF) under one or more
0003 # contributor license agreements.  See the NOTICE file distributed with
0004 # this work for additional information regarding copyright ownership.
0005 # The ASF licenses this file to You under the Apache License, Version 2.0
0006 # (the "License"); you may not use this file except in compliance with
0007 # the License.  You may obtain a copy of the License at
0008 #
0009 #    http://www.apache.org/licenses/LICENSE-2.0
0010 #
0011 # Unless required by applicable law or agreed to in writing, software
0012 # distributed under the License is distributed on an "AS IS" BASIS,
0013 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014 # See the License for the specific language governing permissions and
0015 # limitations under the License.
0016 #
0017
0018 import os
0019 import imp
0020
0021
0022 # This is a hack to always refer the main code rather than built zip.
0023 main_code_dir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
0024 daemon = imp.load_source("daemon", "%s/pyspark/daemon.py" % main_code_dir)
0025
0026 if "COVERAGE_PROCESS_START" in os.environ:
0027     worker = imp.load_source("worker", "%s/pyspark/worker.py" % main_code_dir)
0028
0029     def _cov_wrapped(*args, **kwargs):
0030         import coverage
0031         cov = coverage.coverage(
0032             config_file=os.environ["COVERAGE_PROCESS_START"])
0033         cov.start()
0034         try:
0035             worker.main(*args, **kwargs)
0036         finally:
0037             cov.stop()
0038             cov.save()
0039     daemon.worker_main = _cov_wrapped
0040 else:
0041     raise RuntimeError("COVERAGE_PROCESS_START environment variable is not set, exiting.")
0042
0043
0044 if __name__ == '__main__':
0045     daemon.manager()