| #!/usr/bin/env python |
| |
| ''' |
| 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. |
| ''' |
| |
| """ |
| Run this file to interrupt a running python process and open an interactive shell. |
| """ |
| |
| import os |
| import signal |
| from RemoteDebugUtils import NamedPipe |
| from RemoteDebugUtils import pipename |
| |
| def debug_process(pid): |
| """Interrupt a running process and debug it.""" |
| os.kill(pid, signal.SIGUSR2) # Signal process. |
| pipe = NamedPipe(pipename(pid), 1) |
| try: |
| while pipe.is_open(): |
| txt=raw_input(pipe.get()) + '\n' |
| pipe.put(txt) |
| except EOFError: |
| pass # Exit. |
| pipe.close() |
| |
| def main(): |
| with open("/var/run/ambari-agent/ambari-agent.pid") as f: |
| pid_str = f.read().strip() |
| pid = int(pid_str) |
| |
| debug_process(pid) |
| |
| if __name__=='__main__': |
| main() |
| |