# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. # # Licensed 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. """ Usage: Start monitor with one line command Example: python -m paddle_serving_server.monitor """ import os import time import argparse class Monitor(object): ''' Monitor base class. It is used to monitor the remote model, pull and update the local model. ''' def __init__(self, interval): self._remote_path = None self._remote_model_name = None self._remote_donefile_name = None self._local_path = None self._local_model_name = None self._local_donefile_name = None self._interval = interval self._remote_donefile_timestamp = None self._local_tmp_dir = None def set_remote_path(self, remote_path): self._remote_path = remote_path def set_remote_model_name(self, model_name): self._remote_model_name = model_name def set_remote_donefile_name(self, donefile_name): self._remote_donefile_name = donefile_name def set_local_path(self, local_path): self._local_path = local_path def set_local_model_name(self, model_name): self._local_model_name = model_name def set_local_donefile_name(self, donefile_name): self._local_donefile_name = donefile_name def set_local_tmp_dir(self, tmp_dir): self._local_tmp_dir = tmp_dir def _check_params(self): if self._remote_path is None: raise Exception('remote_path not set.') if self._remote_model_name is None: raise Exception('remote_model_name not set.') if self._remote_donefile_name is None: raise Exception('remote_donefile_name not set.') if self._local_model_name is None: raise Exception('local_model_name not set.') if self._local_path is None: raise Exception('local_path not set.') if self._local_donefile_name is None: raise Exception('local_donefile_name not set.') if self._local_tmp_dir is None: raise Exception('local_tmp_dir not set.') def run(self): ''' Monitor the remote model by polling and update the local model. ''' self._check_params() if not os.path.exists(self._local_tmp_dir): os.makedirs(self._local_tmp_dir) while True: [flag, timestamp] = self._exist_remote_donefile() if flag: if self._remote_donefile_timestamp is None or \ timestamp != self._remote_donefile_timestamp: self._remote_donefile_timestamp = timestamp self._pull_remote_model() print('[INFO] pull remote model') self._update_local_model() print('[INFO] update model') self._update_local_donefile() print('[INFO] update local donefile') else: print('[INFO] no donefile.') print('[INFO] sleep {}s'.format(self._interval)) time.sleep(self._interval) def _exist_remote_donefile(self): raise Exception('This function must be inherited.') def _pull_remote_model(self): raise Exception('This function must be inherited.') def _update_local_model(self): raise Exception('This function must be inherited.') def _update_local_donefile(self): raise Exception('This function must be inherited.') class FTPMonitor(Monitor): def __init__(self, ftp_ip, ftp_port, username="", password="", interval=10): import ftplib super(FTPMonitor, self).__init__(interval) self._ftp_ip = ftp_ip self._ftp_port = ftp_port self._ftp = ftplib.FTP() self._connect(ftp_ip, ftp_port, username, password) def _connect(self, ftp_ip, ftp_port, username, password): self._ftp.connect(ftp_ip, ftp_port) self._ftp.login(username, password) def _exist_remote_donefile(self): import ftplib try: donefile_path = '{}/{}'.format(self._remote_path, self._remote_donefile_name) timestamp = self._ftp.voidcmd('MDTM {}'.format(donefile_path))[ 4:].strip() return [True, timestamp] except ftplib.error_perm: return [False, None] def _pull_remote_model(self): cmd = 'wget -nH -r -P {} ftp://{}:{}/{}/{} &> /dev/null'.format( self._local_tmp_dir, self._ftp_ip, self._ftp_port, self._remote_path, self._remote_model_name) if os.system(cmd) != 0: raise Exception('pull remote model failed.') def _update_local_model(self): cmd = 'cp -r {}/{}/* {}/{}'.format( self._local_tmp_dir, self._remote_model_name, self._local_path, self._local_model_name) if os.system(cmd) != 0: raise Exception('update local model failed.') def _update_local_donefile(self): cmd = 'touch {}/{}/{}'.format(self._local_path, self._local_model_name, self._local_donefile_name) if os.system(cmd) != 0: raise Exception('update local donefile failed.') def parse_args(): parser = argparse.ArgumentParser(description="Monitor") parser.add_argument( "--type", type=str, required=True, help="Type of remote server") parser.add_argument( "--remote_path", type=str, required=True, help="Remote path") parser.add_argument( "--remote_model_name", type=str, required=True, help="Remote model name") parser.add_argument( "--remote_donefile_name", type=str, required=True, help="Remote donefile name") parser.add_argument( "--local_path", type=str, required=True, help="Local path") parser.add_argument( "--local_model_name", type=str, required=True, help="Local model name") parser.add_argument( "--local_donefile_name", type=str, required=True, help="Local donfile name(fluid_time_file in model file)") parser.add_argument( "--local_tmp_dir", type=str, default='tmp', help="Local tmp dir") parser.add_argument( "--interval", type=int, default=10, help="Time interval") parser.add_argument("--ftp_ip", type=str, help="Ip the ftp") parser.add_argument("--ftp_port", type=int, help="Port the ftp") return parser.parse_args() def start_ftp_monitor(): args = parse_args() obj = FTPMonitor(args.ftp_ip, args.ftp_port, interval=args.interval) obj.set_remote_path(args.remote_path) obj.set_remote_model_name(args.remote_model_name) obj.set_remote_donefile_name(args.remote_donefile_name) obj.set_local_path(args.local_path) obj.set_local_model_name(args.local_model_name) obj.set_local_donefile_name(args.local_donefile_name) obj.set_local_tmp_dir(args.local_tmp_dir) obj.run() if __name__ == "__main__": args = parse_args() if args.type == 'ftp': start_ftp_monitor() else: raise Exception('unsupport type.')