def _register_reader(self):
channel = SandboxRpcChannel()
stub = subprocess_pb.CupidSubProcessService_Stub(channel)
req = subprocess_pb.RegisterTableReaderRequest(
inputTableHandle=self._handle, inputSplit=self.split_proto)
controller = CupidRpcController()
resp = stub.RegisterTableReader(controller, req, None)
if controller.Failed():
raise CupidError(controller.ErrorText())
logger.info("RegisterTableReader response: %s", resp)
logger.info("RegisterTableReaderResponse protobuf field size = %d",
len(resp.ListFields()))
schema_json = json.loads(resp.schema)
partition_schema_json = json.loads(resp.partitionSchema) \
if resp.HasField('partitionSchema') else None
schema_names = [d['name'] for d in schema_json]
schema_types = [d['type'] for d in schema_json]
pt_schema_names = [d['name'] for d in partition_schema_json]
pt_schema_types = [d['type'] for d in partition_schema_json]
schema = Schema.from_lists(schema_names, schema_types, pt_schema_names,
pt_schema_types)
return resp.readIterator, schema
def commit(self):
channel = SandboxRpcChannel()
stub = subprocess_pb.CupidSubProcessService_Stub(channel)
commit_actions = [
subprocess_pb.CommitActionInfo(
commitFileName=self._block_id,
attemptFileName=ATTEMPT_FILE_PREFIX + self._block_id,
partSpec=self._partition_spec,
)
]
req = subprocess_pb.CommitTableFilesRequest(
outputTableHandle=self._handle,
projectName=self._project_name,
tableName=self._table_name,
commitActionInfos=commit_actions,
)
controller = CupidRpcController()
for _ in range(options.retry_times):
stub.CommitTableFiles(controller, req, None)
if controller.Failed():
time.sleep(0.1)
controller = CupidRpcController()
else:
break
if controller.Failed():
raise CupidError(controller.ErrorText())
def _register_writer(self, partition=None):
if isinstance(partition, TablePartition):
partition = str(partition.spec)
controller = CupidRpcController()
channel = SandboxRpcChannel()
stub = subprocess_pb.CupidSubProcessService_Stub(channel)
table_schema = self._table_schema
schema_str = '|' + '|'.join(str(col.type) for col in table_schema.simple_columns)
req = subprocess_pb.RegisterTableWriterRequest(
outputTableHandle=self._handle,
projectName=self._project_name,
tableName=self._table_name,
attemptFileName=ATTEMPT_FILE_PREFIX + self._block_id,
partSpec=partition.replace("'", '') if partition else None,
schema=schema_str,
)
resp = stub.RegisterTableWriter(controller, req, None)
write_label = resp.subprocessWriteTableLabel
return write_label
def create_download_session(session,
table_or_parts,
split_size=None,
split_count=None,
columns=None,
with_split_meta=False):
channel = CupidTaskServiceRpcChannel(session)
stub = task_service_pb.CupidTaskService_Stub(channel)
if not isinstance(table_or_parts, (list, tuple, set, GeneratorType)):
table_or_parts = [table_or_parts]
if split_size is None and split_count is None:
split_count = 1
split_count = split_count or 0
split_size = (split_size or 1024**2) // 1024**2
table_pbs = []
for t in table_or_parts:
if isinstance(t, Table):
if not columns:
columns = t.schema.names
table_kw = dict(
projectName=t.project.name,
tableName=t.name,
columns=','.join(columns),
)
elif isinstance(t, TablePartition):
if not columns:
columns = t.table.schema.names
table_kw = dict(
projectName=t.table.project.name,
tableName=t.table.name,
columns=','.join(columns),
partSpec=str(t.partition_spec).replace("'", '').strip(),
)
else:
raise NotImplementedError
table_pbs.append(task_service_pb.TableInputInfo(**table_kw))
request = task_service_pb.SplitTablesRequest(
lookupName=session.lookup_name,
splitSize=split_size,
splitCount=split_count,
tableInputInfos=table_pbs,
allowNoColumns=True,
requireSplitMeta=with_split_meta,
)
controller = CupidRpcController()
resp = stub.SplitTables(controller, request, None)
if controller.Failed():
raise CupidError(controller.ErrorText())
logger.info("[CupidTask] splitTables call, CurrentInstanceId: %s, "
"request: %s, response: %s" % (
session.lookup_name,
str(request),
str(resp),
))
handle = resp.inputTableHandle
channel = SandboxRpcChannel()
stub = subprocess_pb.CupidSubProcessService_Stub(channel)
if not with_split_meta:
split_meta = itertools.repeat(None)
else:
req = subprocess_pb.GetSplitsMetaRequest(inputTableHandle=handle, )
controller = CupidRpcController()
resp = stub.GetSplitsMeta(controller, req, None)
logger.info("[CupidTask] getSplitsMeta call, CurrentInstanceId: %s, "
"request: %s, response: %s" % (
session.lookup_name,
str(request),
str(resp),
))
if controller.Failed():
split_meta = itertools.repeat(None)
logger.warning('Failed to get results of getSplitsMeta, '
'may running on an old service')
else:
split_meta = resp.inputSplitsMeta
req = subprocess_pb.GetSplitsRequest(inputTableHandle=handle)
controller = CupidRpcController()
resp = stub.GetSplits(controller, req, None)
if controller.Failed():
raise CupidError(controller.ErrorText())
input_splits = []
for info, meta in zip(resp.inputSplits, split_meta):
input_splits.append(
TableSplit(split_proto=info,
meta_proto=meta,
handle=handle,
columns=columns))
logger.info("[SubProcess] getSplits call, CurrentInstanceId: %s, "
"request: %s, response: %s" % (
session.lookup_name,
str(req),
str(resp),
))
return CupidTableDownloadSession(session=session,
handle=handle,
splits=input_splits)