crunch_scripts/crunchutil/robust_put.py

   1 import arvados
   2 import arvados.commands.put as put
   3 import os
   4 import logging
   5
   6 def machine_progress(bytes_written, bytes_expected):
   7     return "upload wrote {} total {}\n".format(
   8         bytes_written, -1 if (bytes_expected is None) else bytes_expected)
   9
  10 class Args(object):
  11     def __init__(self, fn):
  12         self.filename = None
  13         self.paths = [fn]
  14         self.max_manifest_depth = 0
  15
  16 # Upload to Keep with error recovery.
  17 # Return a uuid or raise an exception if there are too many failures.
  18 def upload(source_dir):
  19     source_dir = os.path.abspath(source_dir)
  20     done = False
  21     if 'TASK_WORK' in os.environ:
  22         resume_cache = put.ResumeCache(os.path.join(arvados.current_task().tmpdir, "upload-output-checkpoint"))
  23     else:
  24         resume_cache = put.ResumeCache(put.ResumeCache.make_path(Args(source_dir)))
  25     reporter = put.progress_writer(machine_progress)
  26     bytes_expected = put.expected_bytes_for([source_dir])
  27     backoff = 1
  28     outuuid = None
  29     while not done:
  30         try:
  31             out = put.ArvPutCollectionWriter.from_cache(resume_cache, reporter, bytes_expected)
  32             out.do_queued_work()
  33             out.write_directory_tree(source_dir, max_manifest_depth=0)
  34             outuuid = out.finish()
  35             done = True
  36         except KeyboardInterrupt as e:
  37             logging.critical("caught interrupt signal 2")
  38             raise e
  39         except Exception as e:
  40             logging.exception("caught exception:")
  41             backoff *= 2
  42             if backoff > 256:
  43                 logging.critical("Too many upload failures, giving up")
  44                 raise e
  45             else:
  46                 logging.warning("Sleeping for %s seconds before trying again" % backoff)
  47                 time.sleep(backoff)
  48     return outuuid