recording.py 文件源码

def load_summary_protos(java_application=False):
  """Load all valid summary records from memcache.

  Args:
    java_application: Boolean. If true, this function is being invoked
      by the download_appstats tool on a java application.

  Returns:
    A list of StatsProto instances, in reverse chronological order
    (i.e. most recent first).

  NOTE: This is limited to returning at most config.KEY_MODULUS records,
  since there are only that many distinct keys.  See also make_key().
  """
  tmpl = config.KEY_PREFIX + config.KEY_TEMPLATE + config.PART_SUFFIX
  if java_application:

    tmpl = '"' + tmpl + '"'
  keys = [tmpl % i
          for i in
          range(0, config.KEY_DISTANCE * config.KEY_MODULUS,
                config.KEY_DISTANCE)]
  results = memcache.get_multi(keys, namespace=config.KEY_NAMESPACE)
  records = []
  for rec in results.itervalues():
    try:
      pb = StatsProto(rec)
    except Exception, err:
      logging.warn('Bad record: %s', err)
    else:
      records.append(pb)
  logging.info('Loaded %d raw summary records, %d valid',
               len(results), len(records))

  records.sort(key=lambda pb: -pb.start_timestamp_milliseconds())
  return records