s3-tests/s3tests/common/results.py
2011-07-19 09:09:51 -07:00

110 lines
3 KiB
Python

import bunch
import collections
import gevent
import time
import traceback
import yaml
from ..common import context
context.update(bunch.Bunch(
result_queue=collections.deque(),
))
class TransferGreenletResult(object):
""" Generic container object. Weeeeeeeeeeeeeee *short* """
def __init__(self, type):
# About the Greenlet
self.type = type
# About the key
self.bucket = None
self.key = None
self.size = None
# About the job
self.success = False
self.error = None
self.start_time = None
self.finish_time = None
self.duration = None
self.latency = None
self.request_start = None
self.request_finish = None
self.chunks = None
def markStarted(self):
self.start_time = time.time()
def markFinished(self):
self.finish_time = time.time()
self.duration = self.finish_time - self.start_time
context.result_queue.append(self)
def setKey(self, key):
self.key = key.name
self.bucket = key.bucket.name
def setError(self, message='Unhandled Exception', show_traceback=False):
""" Sets an error state in the result, and returns False... example usage:
return self.result.setError('Something happened', traceback=True)
"""
self.error = dict()
self.error['msg'] = message
if show_traceback:
self.error['traceback'] = traceback.format_exc()
return False
@classmethod
def repr_yaml(c, dumper, self):
data = dict()
for x in ('type', 'bucket', 'key', 'chunks'):
data[x] = self.__dict__[x]
# reader => r, writer => w
data['type'] = data['type'][0]#chunks
# the error key must be present ONLY on failure.
assert not (self.success and self.error)
if self.success:
assert self.error == None
else:
assert self.error != None
data['error'] = self.error
data['start'] = self.request_start
if self.request_finish:
data['duration'] = 1000000000 * (self.request_finish - self.request_start)
return dumper.represent_dict(data)
# And a representer for dumping a TransferGreenletResult as a YAML dict()
yaml.add_representer(TransferGreenletResult, TransferGreenletResult.repr_yaml)
class ResultsLogger(gevent.Greenlet):
""" A quick little greenlet to always run and dump results. """
def __init__(self):
gevent.Greenlet.__init__(self)
self.outfile = context.real_stdout
def _run(self):
while True:
try:
self._doit()
except:
print "An exception was encountered while dumping the results... this shouldn't happen!"
traceback.print_exc()
time.sleep(0.1)
def _doit(self):
while context.result_queue:
result = context.result_queue.popleft()
yrep = yaml.dump(result)
self.outfile.write(yrep + "---\n")