old_contents: #
  # Licensed to the Apache Software Foundation (ASF) under one or more
  # contributor license agreements.  See the NOTICE file distributed with
  # this work for additional information regarding copyright ownership.
  # The ASF licenses this file to You under the Apache License, Version 2.0
  # (the "License"); you may not use this file except in compliance with
  # the License.  You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #
  
  """A runner for executing portable pipelines on Flink."""
  
  from __future__ import absolute_import
  from __future__ import print_function
  
  from apache_beam.options import pipeline_options
  from apache_beam.runners.portability import job_server
  from apache_beam.runners.portability import portable_runner
  
  PUBLISHED_FLINK_VERSIONS = ['1.6', '1.7', '1.8']
  
  
  class FlinkRunner(portable_runner.PortableRunner):
    def default_job_server(self, options):
      return job_server.StopOnExitJobServer(FlinkJarJobServer(options))
  
  
  class FlinkRunnerOptions(pipeline_options.PipelineOptions):
    @classmethod
    def _add_argparse_args(cls, parser):
      parser.add_argument('--flink_master_url', default='[local]')
      parser.add_argument('--flink_version',
                          default=PUBLISHED_FLINK_VERSIONS[-1],
                          choices=PUBLISHED_FLINK_VERSIONS,
                          help='Flink version to use.')
      parser.add_argument('--flink_job_server_jar',
                          help='Path or URL to a flink jobserver jar.')
  
  
  class FlinkJarJobServer(job_server.JavaJarJobServer):
    def __init__(self, options):
      super(FlinkJarJobServer, self).__init__()
      options = options.view_as(FlinkRunnerOptions)
      self._jar = options.flink_job_server_jar
      self._master_url = options.flink_master_url
      self._flink_version = options.flink_version
  
    def path_to_jar(self):
      if self._jar:
        return self._jar
      else:
        return self.path_to_beam_jar(
            'runners:flink:%s:job-server:shadowJar' % self._flink_version)
  
    def java_arguments(self, job_port, artifacts_dir):
      return [
          '--flink-master-url', self._master_url,
          '--artifacts-dir', artifacts_dir,
          '--job-port', job_port,
          '--artifact-port', 0,
          '--expansion-port', 0
      ]
  
new_contents: #
  # Licensed to the Apache Software Foundation (ASF) under one or more
  # contributor license agreements.  See the NOTICE file distributed with
  # this work for additional information regarding copyright ownership.
  # The ASF licenses this file to You under the Apache License, Version 2.0
  # (the "License"); you may not use this file except in compliance with
  # the License.  You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #
  
  """A runner for executing portable pipelines on Flink."""
  
  from __future__ import absolute_import
  from __future__ import print_function
  
  from apache_beam.options import pipeline_options
  from apache_beam.runners.portability import job_server
  from apache_beam.runners.portability import portable_runner
  
  PUBLISHED_FLINK_VERSIONS = ['1.6', '1.7', '1.8']
  
  
  class FlinkRunner(portable_runner.PortableRunner):
    def default_job_server(self, options):
      return job_server.StopOnExitJobServer(FlinkJarJobServer(options))
  
  
  class FlinkRunnerOptions(pipeline_options.PipelineOptions):
    @classmethod
    def _add_argparse_args(cls, parser):
      parser.add_argument('--flink_master_url', default='[local]')
      parser.add_argument('--flink_version',
                          default=PUBLISHED_FLINK_VERSIONS[-1],
                          choices=PUBLISHED_FLINK_VERSIONS,
                          help='Flink version to use.')
      parser.add_argument('--flink_job_server_jar',
                          help='Path or URL to a flink jobserver jar.')
      parser.add_argument('--artifacts_dir', default=None)
  
  
  class FlinkJarJobServer(job_server.JavaJarJobServer):
    def __init__(self, options):
      super(FlinkJarJobServer, self).__init__()
      options = options.view_as(FlinkRunnerOptions)
      self._jar = options.flink_job_server_jar
      self._master_url = options.flink_master_url
      self._flink_version = options.flink_version
      self._artifacts_dir = options.artifacts_dir
  
    def path_to_jar(self):
      if self._jar:
        return self._jar
      else:
        return self.path_to_beam_jar(
            'runners:flink:%s:job-server:shadowJar' % self._flink_version)
  
    def java_arguments(self, job_port, artifacts_dir):
      return [
          '--flink-master-url', self._master_url,
          '--artifacts-dir', (self._artifacts_dir
                              if self._artifacts_dir else artifacts_dir),
          '--job-port', job_port,
          '--artifact-port', 0,
          '--expansion-port', 0
      ]
  
subject: Add artifacts-dir param to flink runner