def mapped_parser_item_iterator(input_stream, item_path):
"""
Boilerplate function to setup the event mapper to ensure floats instead of decimals for use with ijson
:param input_stream:
:param item_path:
:return:
"""
events = map(ijson_decimal_to_float, ijpython.parse(input_stream))
return ijcommon.items(events, item_path)
def _parse_cdmi_msg_body_fields(handle, buffer_size=4194304):
"""Parses the message body fields of a cdmi request.
This function parses all fields except the value
field. It returns a dictionary with the fields and
a generator that can be used to get the value field.
It takes advantage that the value field must always
be the last. An excerpt from the cdmi 1.0.2 spec:
"The request and response message body JSON fields
may be specified or returned in any order, with the
exception that, if present, for data objects, the
valuerange and value fields shall appear last and
in that order."
FIXIT: this first implementation is only partial,
to accomodate requests that fit in one buffer_size.
"""
parser = parse(handle)
data_json = dict()
value_gen = None
for prefix, event, value in parser:
if value == 'value':
def make_value_gen(val, encoding, buffer_size=4 * 1024):
""" This function works with the current ijson.
ijson itself should be modified so that it can return
an iterator. Then this function will become simpler,
but will be used to apply any special encoding.
"""
acc = 0
out = None
while out != '':
out = val[acc:acc + buffer_size]
acc += buffer_size
yield out
pre, eve, val = next(parser)
value_gen = make_value_gen(
val, data_json.get('valuetransferencoding', None))
break
if prefix != '':
data_json[prefix] = value
return data_json, value_gen
def load(filename):
res = Result()
parser = ijson.parse(open(filename))
for prefix, event, value in parser:
if prefix == 'total_duration':
res.duration = value
if prefix == 'started':
res.started = value
if prefix == 'ended':
res.ended = value
if prefix == 'connection_stats.item.tcp_pre_init':
if res.preInitMin is None or value < res.preInitMin:
res.preInitMin = value
if res.preInitMax is None or value > res.preInitMax:
res.preInitMax = value
if prefix == 'connection_stats.item.failed':
if value:
res.fail += 1
else:
res.success += 1
if prefix == 'connection_stats.item.open':
res.openTimestamps.append(value)
if prefix == 'connection_stats.item.close':
res.closeTimestamps.append(value)
res.total = res.success + res.fail
res.durationWallclock = res.ended - res.started
return res
def load(filename):
res = Result()
parser = ijson.parse(open(filename))
for prefix, event, value in parser:
if prefix == 'total_duration':
res.duration = value
if prefix == 'started':
res.started = value
if prefix == 'ended':
res.ended = value
if prefix == 'connection_stats.item.tcp_pre_init':
if res.preInitMin is None or value < res.preInitMin:
res.preInitMin = value
if res.preInitMax is None or value > res.preInitMax:
res.preInitMax = value
if prefix == 'connection_stats.item.failed':
if value:
res.fail += 1
else:
res.success += 1
if prefix == 'connection_stats.item.open':
res.openTimestamps.append(value)
if prefix == 'connection_stats.item.close':
res.closeTimestamps.append(value)
res.total = res.success + res.fail
res.durationWallclock = res.ended - res.started
return res
def __init__(self, sock): self._f = SocketWrapper(sock) self._parser = ijson.parse(self._f)
