def from_request(cls, request):
"""Create new TransientShardState from webapp request."""
mapreduce_spec = MapreduceSpec.from_json_str(
request.get("mapreduce_spec"))
mapper_spec = mapreduce_spec.mapper
input_reader_spec_dict = simplejson.loads(
request.get("input_reader_state"), cls=JsonDecoder)
input_reader = mapper_spec.input_reader_class().from_json(
input_reader_spec_dict)
initial_input_reader_spec_dict = simplejson.loads(
request.get("initial_input_reader_state"), cls=JsonDecoder)
initial_input_reader = mapper_spec.input_reader_class().from_json(
initial_input_reader_spec_dict)
output_writer = None
if mapper_spec.output_writer_class():
output_writer = mapper_spec.output_writer_class().from_json(
simplejson.loads(request.get("output_writer_state", "{}"),
cls=JsonDecoder))
assert isinstance(output_writer, mapper_spec.output_writer_class(
)), ("%s.from_json returned an instance of wrong class: %s" %
(mapper_spec.output_writer_class(), output_writer.__class__))
request_path = request.path
base_path = request_path[:request_path.rfind("/")]
handler = util.try_deserialize_handler(
request.get("serialized_handler"))
if not handler:
handler = mapreduce_spec.mapper.handler
return cls(base_path,
mapreduce_spec,
str(request.get("shard_id")),
int(request.get("slice_id")),
input_reader,
initial_input_reader,
output_writer=output_writer,
retries=int(request.get("retries")),
handler=handler)
def from_request(cls, request):
"""Create new TransientShardState from webapp request."""
mapreduce_spec = MapreduceSpec.from_json_str(request.get("mapreduce_spec"))
mapper_spec = mapreduce_spec.mapper
input_reader_spec_dict = simplejson.loads(request.get("input_reader_state"),
cls=JsonDecoder)
input_reader = mapper_spec.input_reader_class().from_json(
input_reader_spec_dict)
initial_input_reader_spec_dict = simplejson.loads(
request.get("initial_input_reader_state"), cls=JsonDecoder)
initial_input_reader = mapper_spec.input_reader_class().from_json(
initial_input_reader_spec_dict)
output_writer = None
if mapper_spec.output_writer_class():
output_writer = mapper_spec.output_writer_class().from_json(
simplejson.loads(request.get("output_writer_state", "{}"),
cls=JsonDecoder))
assert isinstance(output_writer, mapper_spec.output_writer_class()), (
"%s.from_json returned an instance of wrong class: %s" % (
mapper_spec.output_writer_class(),
output_writer.__class__))
request_path = request.path
base_path = request_path[:request_path.rfind("/")]
handler = util.try_deserialize_handler(request.get("serialized_handler"))
if not handler:
handler = mapreduce_spec.mapper.handler
return cls(base_path,
mapreduce_spec,
str(request.get("shard_id")),
int(request.get("slice_id")),
input_reader,
initial_input_reader,
output_writer=output_writer,
retries=int(request.get("retries")),
handler=handler)