sdk/python/arvados/commands/ws.py

   1 #!/usr/bin/env python
   2
   3 import sys
   4 import logging
   5 import argparse
   6 import arvados
   7 import json
   8 from arvados.events import subscribe
   9 import signal
  10
  11 def main(arguments=None):
  12     logger = logging.getLogger('arvados.arv-ws')
  13
  14     parser = argparse.ArgumentParser()
  15     parser.add_argument('-u', '--uuid', type=str, default="", help="Filter events on object_uuid")
  16     parser.add_argument('-f', '--filters', type=str, default="", help="Arvados query filter to apply to log events (JSON encoded)")
  17
  18     group = parser.add_mutually_exclusive_group()
  19     group.add_argument('--poll-interval', default=15, type=int, help="If websockets is not available, specify the polling interval, default is every 15 seconds")
  20     group.add_argument('--no-poll', action='store_false', dest='poll_interval', help="Do not poll if websockets are not available, just fail")
  21
  22     group = parser.add_mutually_exclusive_group()
  23     group.add_argument('-p', '--pipeline', type=str, default="", help="Supply pipeline uuid, print log output from pipeline and its jobs")
  24     group.add_argument('-j', '--job', type=str, default="", help="Supply job uuid, print log output from jobs")
  25
  26     args = parser.parse_args(arguments)
  27
  28     global filters
  29     global known_component_jobs
  30     global ws
  31
  32     filters = []
  33     known_component_jobs = set()
  34     ws = None
  35
  36     def update_subscribed_components(components):
  37         global known_component_jobs
  38         global filters
  39         pipeline_jobs = set()
  40         for c in components:
  41             if "job" in components[c]:
  42                 pipeline_jobs.add(components[c]["job"]["uuid"])
  43         if known_component_jobs != pipeline_jobs:
  44             ws.unsubscribe(filters)
  45             filters = [['object_uuid', 'in', [args.pipeline] + list(pipeline_jobs)]]
  46             ws.subscribe([['object_uuid', 'in', [args.pipeline] + list(pipeline_jobs)]])
  47             known_component_jobs = pipeline_jobs
  48
  49     api = arvados.api('v1', cache=False)
  50
  51     if args.uuid:
  52         filters += [ ['object_uuid', '=', args.uuid] ]
  53
  54     if args.filters:
  55         filters += json.loads(args.filters)
  56
  57     if args.job:
  58         filters += [ ['object_uuid', '=', args.job] ]
  59
  60     if args.pipeline:
  61         filters += [ ['object_uuid', '=', args.pipeline] ]
  62
  63     def on_message(ev):
  64         global filters
  65         global ws
  66
  67         logger.debug(ev)
  68         if 'event_type' in ev and (args.pipeline or args.job):
  69             if ev['event_type'] in ('stderr', 'stdout'):
  70                 sys.stdout.write(ev["properties"]["text"])
  71             elif ev["event_type"] in ("create", "update"):
  72                 if ev["object_kind"] == "arvados#pipelineInstance":
  73                     update_subscribed_components(ev["properties"]["new_attributes"]["components"])
  74
  75                 if ev["object_kind"] == "arvados#pipelineInstance" and args.pipeline:
  76                     if ev["properties"]["new_attributes"]["state"] in ("Complete", "Failed", "Paused"):
  77                         ws.close()
  78
  79                 if ev["object_kind"] == "arvados#job" and args.job:
  80                     if ev["properties"]["new_attributes"]["state"] in ("Complete", "Failed", "Cancelled"):
  81                         ws.close()
  82         elif 'status' in ev and ev['status'] == 200:
  83             pass
  84         else:
  85             print json.dumps(ev)
  86
  87     try:
  88         ws = subscribe(arvados.api('v1', cache=False), filters, on_message, poll_fallback=args.poll_interval)
  89         if ws:
  90             if args.pipeline:
  91                 c = api.pipeline_instances().get(uuid=args.pipeline).execute()
  92                 update_subscribed_components(c["components"])
  93                 if c["state"] in ("Complete", "Failed", "Paused"):
  94                     ws.close()
  95             ws.run_forever()
  96     except KeyboardInterrupt:
  97         pass
  98     except Exception as e:
  99         logger.error(e)
 100     finally:
 101         if ws:
 102             ws.close()