add afsMonitor

python/paddle_serving_server/monitor.py

@@ -22,6 +22,7 @@ import time
 import argparse
 import commands
 import datetime
+import shutil
 
 
 class Monitor(object):
@@ -137,17 +138,57 @@ class Monitor(object):
             raise Exception('update local donefile failed.')
 
 
+class AFSMonitor(Monitor):
+    ''' AFS Monitor(by hadoop-client). '''
+
+    def __init__(self,
+                 hadoop_bin_path,
+                 hadoop_host=None,
+                 hadoop_ugi=None,
+                 interval=10):
+        super(AFSMonitor, self).__init__(interval)
+        self._hadoop_bin = hadoop_bin_path
+        self._hadoop_host = hadoop_host
+        self._hadoop_ugi = hadoop_ugi
+        self._cmd_prefix = '{} fs '.format(self._hadoop_bin)
+        if not self._hadoop_host and not self._hadoop_ugi:
+            self._cmd_prefix += '-D fs.default.name={} -D hadoop.job.ugi={} '.format(
+                self._hadoop_host, self._hadoop_ugi)
+
+    def _exist_remote_file(self, path, filename, local_tmp_path):
+        remote_filepath = os.path.join(path, filename)
+        cmd = '{} -ls {}'.format(self._cmd_prefix, remote_filepath)
+        [status, output] = commands.getstatusoutput(cmd)
+        if status == 0:
+            [_, _, _, _, _, mdate, mtime, _] = output.split('\n')[-1]
+            timestr = mdate + mtime
+            return [True, timestr]
+        else:
+            return [False, None]
+
+    def _pull_remote_dir(self, remote_path, dirname, local_tmp_path):
+        # remove old file before pull remote dir
+        local_dirpath = os.path.join(local_tmp_path, dirname)
+        if os.path.exists(local_dirpath):
+            shutil.rmtree(local_dirpath)
+        remote_dirpath = os.path.join(remote_path, dirname)
+        cmd = '{} -get {} {}'.format(self._cmd_prefix, remote_dirpath,
+                                     local_dirpath)
+        if os.system(cmd) != 0:
+            raise Exception('pull remote dir failed.')
+
+
 class HDFSMonitor(Monitor):
     ''' HDFS Monitor. '''
 
     def __init__(self, bin_path, interval=10):
         super(HDFSMonitor, self).__init__(interval)
         self._hdfs_bin_path = bin_path
+        self._prefix_cmd = '{} dfs '.format(self._hdfs_bin_path)
 
     def _exist_remote_file(self, path, filename, local_tmp_path):
         remote_filepath = os.path.join(path, filename)
-        cmd = '{} dfs -stat "%Y" {}'.format(self._hdfs_bin_path,
-                                            remote_filepath)
+        cmd = '{} -stat "%Y" {}'.format(self._prefix_cmd, remote_filepath)
         [status, timestamp] = commands.getstatusoutput(cmd)
         if status == 0:
             return [True, timestamp]
@@ -156,7 +197,7 @@ class HDFSMonitor(Monitor):
 
     def _pull_remote_dir(self, remote_path, dirname, local_tmp_path):
         remote_dirpath = os.path.join(remote_path, dirname)
-        cmd = '{} dfs -get -f {} {}'.format(self._hdfs_bin_path, remote_dirpath,
+        cmd = '{} -get -f {} {}'.format(self._prefix_cmd, remote_dirpath,
                                         local_tmp_path)
         if os.system(cmd) != 0:
             raise Exception('pull remote dir failed.')
@@ -280,20 +321,37 @@ def parse_args():
         help="Local tmp path")
     parser.add_argument(
         "--interval", type=int, default=10, help="Time interval")
+    # general monitor
     parser.add_argument(
         "--general_host", type=str, help="Host of general remote server")
+    # hdfs monitor
     parser.add_argument("--hdfs_bin", type=str, help="Hdfs binary file path")
+    # ftp monitor
     parser.add_argument("--ftp_host", type=str, help="Host of ftp")
     parser.add_argument("--ftp_port", type=int, help="Port of ftp")
     parser.add_argument(
         "--ftp_username", type=str, default='', help="Username of ftp")
     parser.add_argument(
         "--ftp_password", type=str, default='', help="Password of ftp")
+    # afs monitor
+    parser.add_argument(
+        "--hadoop_bin_path", type=str, help="Hadoop_bin_path for afs")
+    parser.add_argument(
+        "--hadoop_host", type=str, default=None, help="Hadoop_host for afs")
+    parser.add_argument(
+        "--hadoop_ugi", type=str, default=None, help="Hadoop_ugi for afs")
     return parser.parse_args()
 
 
 def get_monitor(mtype):
-    ''' get monitor. '''
+    """ generator monitor instance.
+
+    Args:
+        mtype: type of monitor
+
+    Returns:
+        monitor instance.
+    """
     if mtype == 'ftp':
         return FTPMonitor(
             args.ftp_host,
@@ -305,6 +363,12 @@ def get_monitor(mtype):
         return HDFSMonitor(args.hdfs_bin, interval=args.interval)
     elif mtype == 'general':
         return GeneralMonitor(args.general_host, interval=args.interval)
+    elif mtype == 'afs':
+        return AFSMonitor(
+            args.hadoop_bin_path,
+            args.hadoop_host,
+            args.hadoop_ugi,
+            interval=args.interval)
     else:
         raise Exception('unsupport type.')