X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/f4ca9ad94a6bb006d1f3c7ba207837f1736d1247..0561bd0c3c07257fd58ded6c7cfa5feeae97af57:/sdk/python/arvados/commands/ws.py

diff --git a/sdk/python/arvados/commands/ws.py b/sdk/python/arvados/commands/ws.py
index 347075dffd..d338ee3afa 100644
--- a/sdk/python/arvados/commands/ws.py
+++ b/sdk/python/arvados/commands/ws.py
@@ -1,20 +1,28 @@
-#!/usr/bin/env python
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
 
+from __future__ import print_function
 import sys
 import logging
 import argparse
 import arvados
 import json
 from arvados.events import subscribe
+from arvados._version import __version__
 import signal
 
 def main(arguments=None):
     logger = logging.getLogger('arvados.arv-ws')
 
     parser = argparse.ArgumentParser()
+    parser.add_argument('--version', action='version',
+                        version="%s %s" % (sys.argv[0], __version__),
+                        help='Print version and exit.')
     parser.add_argument('-u', '--uuid', type=str, default="", help="Filter events on object_uuid")
     parser.add_argument('-f', '--filters', type=str, default="", help="Arvados query filter to apply to log events (JSON encoded)")
     parser.add_argument('-s', '--start-time', type=str, default="", help="Arvados query filter to fetch log events created at or after this time. This will be server time in UTC. Allowed format: YYYY-MM-DD or YYYY-MM-DD hh:mm:ss")
+    parser.add_argument('-i', '--id', type=int, default=None, help="Start from given log id.")
 
     group = parser.add_mutually_exclusive_group()
     group.add_argument('--poll-interval', default=15, type=int, help="If websockets is not available, specify the polling interval, default is every 15 seconds")
@@ -67,6 +75,9 @@ def main(arguments=None):
     else:
         last_log_id = None
 
+    if args.id:
+        last_log_id = args.id-1
+
     def on_message(ev):
         global filters
         global ws
@@ -89,7 +100,7 @@ def main(arguments=None):
         elif 'status' in ev and ev['status'] == 200:
             pass
         else:
-            print json.dumps(ev)
+            print(json.dumps(ev))
 
     try:
         ws = subscribe(arvados.api('v1'), filters, on_message, poll_fallback=args.poll_interval, last_log_id=last_log_id)