def _map_task_registration(self, map_task, state_handler, data_operation_spec): input_data = {} runner_sinks = {} transforms = [] transform_index_to_id = {} # Maps coders to new coder objects and references. coders = {} def coder_id(coder): if coder not in coders: coders[coder] = beam_fn_api_pb2.Coder( function_spec=sdk_worker.pack_function_spec_data( json.dumps(coder.as_cloud_object()), sdk_worker.PYTHON_CODER_URN, id=self._next_uid())) return coders[coder].function_spec.id def output_tags(op): return getattr(op, 'output_tags', ['out']) def as_target(op_input): input_op_index, input_output_index = op_input input_op = map_task[input_op_index][1] return { 'ignored_input_tag': beam_fn_api_pb2.Target.List(target=[ beam_fn_api_pb2.Target( primitive_transform_reference=transform_index_to_id[ input_op_index], name=output_tags(input_op)[input_output_index]) ]) } def outputs(op): return { tag: beam_fn_api_pb2.PCollection(coder_reference=coder_id(coder)) for tag, coder in zip(output_tags(op), op.output_coders) } for op_ix, (stage_name, operation) in enumerate(map_task): transform_id = transform_index_to_id[op_ix] = self._next_uid() if isinstance(operation, operation_specs.WorkerInMemoryWrite): # Write this data back to the runner. fn = beam_fn_api_pb2.FunctionSpec( urn=sdk_worker.DATA_OUTPUT_URN, id=self._next_uid()) if data_operation_spec: fn.data.Pack(data_operation_spec) inputs = as_target(operation.input) side_inputs = {} runner_sinks[(transform_id, 'out')] = operation elif isinstance(operation, operation_specs.WorkerRead): # A Read is either translated to a direct injection of windowed values # into the sdk worker, or an injection of the source object into the # sdk worker as data followed by an SDF that reads that source. if (isinstance(operation.source.source, maptask_executor_runner.InMemorySource) and isinstance( operation.source.source.default_output_coder(), WindowedValueCoder)): output_stream = create_OutputStream() element_coder = (operation.source.source. default_output_coder().get_impl()) # Re-encode the elements in the nested context and # concatenate them together for element in operation.source.source.read(None): element_coder.encode_to_stream(element, output_stream, True) target_name = self._next_uid() input_data[(transform_id, target_name)] = output_stream.get() fn = beam_fn_api_pb2.FunctionSpec( urn=sdk_worker.DATA_INPUT_URN, id=self._next_uid()) if data_operation_spec: fn.data.Pack(data_operation_spec) inputs = {target_name: beam_fn_api_pb2.Target.List()} side_inputs = {} else: # Read the source object from the runner. source_coder = beam.coders.DillCoder() input_transform_id = self._next_uid() output_stream = create_OutputStream() source_coder.get_impl().encode_to_stream( GlobalWindows.windowed_value(operation.source), output_stream, True) target_name = self._next_uid() input_data[(input_transform_id, target_name)] = output_stream.get() input_ptransform = beam_fn_api_pb2.PrimitiveTransform( id=input_transform_id, function_spec=beam_fn_api_pb2.FunctionSpec( urn=sdk_worker.DATA_INPUT_URN, id=self._next_uid()), # TODO(robertwb): Possible name collision. step_name=stage_name + '/inject_source', inputs={target_name: beam_fn_api_pb2.Target.List()}, outputs={ 'out': beam_fn_api_pb2.PCollection( coder_reference=coder_id(source_coder)) }) if data_operation_spec: input_ptransform.function_spec.data.Pack( data_operation_spec) transforms.append(input_ptransform) # Read the elements out of the source. fn = sdk_worker.pack_function_spec_data( OLDE_SOURCE_SPLITTABLE_DOFN_DATA, sdk_worker.PYTHON_DOFN_URN, id=self._next_uid()) inputs = { 'ignored_input_tag': beam_fn_api_pb2.Target.List(target=[ beam_fn_api_pb2.Target( primitive_transform_reference= input_transform_id, name='out') ]) } side_inputs = {} elif isinstance(operation, operation_specs.WorkerDoFn): fn = sdk_worker.pack_function_spec_data( operation.serialized_fn, sdk_worker.PYTHON_DOFN_URN, id=self._next_uid()) inputs = as_target(operation.input) # Store the contents of each side input for state access. for si in operation.side_inputs: assert isinstance(si.source, iobase.BoundedSource) element_coder = si.source.default_output_coder() view_id = self._next_uid() # TODO(robertwb): Actually flesh out the ViewFn API. side_inputs[si.tag] = beam_fn_api_pb2.SideInput( view_fn=sdk_worker.serialize_and_pack_py_fn( element_coder, urn=sdk_worker.PYTHON_ITERABLE_VIEWFN_URN, id=view_id)) # Re-encode the elements in the nested context and # concatenate them together output_stream = create_OutputStream() for element in si.source.read( si.source.get_range_tracker(None, None)): element_coder.get_impl().encode_to_stream( element, output_stream, True) elements_data = output_stream.get() state_key = beam_fn_api_pb2.StateKey.MultimapSideInput( key=view_id) state_handler.Clear(state_key) state_handler.Append(state_key, elements_data) elif isinstance(operation, operation_specs.WorkerFlatten): fn = sdk_worker.pack_function_spec_data( operation.serialized_fn, sdk_worker.IDENTITY_DOFN_URN, id=self._next_uid()) inputs = { 'ignored_input_tag': beam_fn_api_pb2.Target.List(target=[ beam_fn_api_pb2.Target( primitive_transform_reference= transform_index_to_id[input_op_index], name=output_tags(map_task[input_op_index] [1])[input_output_index]) for input_op_index, input_output_index in operation.inputs ]) } side_inputs = {} else: raise TypeError(operation) ptransform = beam_fn_api_pb2.PrimitiveTransform( id=transform_id, function_spec=fn, step_name=stage_name, inputs=inputs, side_inputs=side_inputs, outputs=outputs(operation)) transforms.append(ptransform) process_bundle_descriptor = beam_fn_api_pb2.ProcessBundleDescriptor( id=self._next_uid(), coders=coders.values(), primitive_transform=transforms) return beam_fn_api_pb2.InstructionRequest( instruction_id=self._next_uid(), register=beam_fn_api_pb2.RegisterRequest( process_bundle_descriptor=[process_bundle_descriptor ])), runner_sinks, input_data
def _map_task_registration(self, map_task, state_handler, data_operation_spec): input_data = {} runner_sinks = {} transforms = [] transform_index_to_id = {} # Maps coders to new coder objects and references. coders = {} def coder_id(coder): if coder not in coders: coders[coder] = beam_fn_api_pb2.Coder( function_spec=sdk_worker.pack_function_spec_data( json.dumps(coder.as_cloud_object()), sdk_worker.PYTHON_CODER_URN, id=self._next_uid())) return coders[coder].function_spec.id def output_tags(op): return getattr(op, 'output_tags', ['out']) def as_target(op_input): input_op_index, input_output_index = op_input input_op = map_task[input_op_index][1] return { 'ignored_input_tag': beam_fn_api_pb2.Target.List(target=[ beam_fn_api_pb2.Target( primitive_transform_reference=transform_index_to_id[ input_op_index], name=output_tags(input_op)[input_output_index]) ]) } def outputs(op): return { tag: beam_fn_api_pb2.PCollection(coder_reference=coder_id(coder)) for tag, coder in zip(output_tags(op), op.output_coders) } for op_ix, (stage_name, operation) in enumerate(map_task): transform_id = transform_index_to_id[op_ix] = self._next_uid() if isinstance(operation, operation_specs.WorkerInMemoryWrite): # Write this data back to the runner. fn = beam_fn_api_pb2.FunctionSpec(urn=sdk_worker.DATA_OUTPUT_URN, id=self._next_uid()) if data_operation_spec: fn.data.Pack(data_operation_spec) inputs = as_target(operation.input) side_inputs = {} runner_sinks[(transform_id, 'out')] = operation elif isinstance(operation, operation_specs.WorkerRead): # A Read is either translated to a direct injection of windowed values # into the sdk worker, or an injection of the source object into the # sdk worker as data followed by an SDF that reads that source. if (isinstance(operation.source.source, maptask_executor_runner.InMemorySource) and isinstance(operation.source.source.default_output_coder(), WindowedValueCoder)): output_stream = create_OutputStream() element_coder = ( operation.source.source.default_output_coder().get_impl()) # Re-encode the elements in the nested context and # concatenate them together for element in operation.source.source.read(None): element_coder.encode_to_stream(element, output_stream, True) target_name = self._next_uid() input_data[(transform_id, target_name)] = output_stream.get() fn = beam_fn_api_pb2.FunctionSpec(urn=sdk_worker.DATA_INPUT_URN, id=self._next_uid()) if data_operation_spec: fn.data.Pack(data_operation_spec) inputs = {target_name: beam_fn_api_pb2.Target.List()} side_inputs = {} else: # Read the source object from the runner. source_coder = beam.coders.DillCoder() input_transform_id = self._next_uid() output_stream = create_OutputStream() source_coder.get_impl().encode_to_stream( GlobalWindows.windowed_value(operation.source), output_stream, True) target_name = self._next_uid() input_data[(input_transform_id, target_name)] = output_stream.get() input_ptransform = beam_fn_api_pb2.PrimitiveTransform( id=input_transform_id, function_spec=beam_fn_api_pb2.FunctionSpec( urn=sdk_worker.DATA_INPUT_URN, id=self._next_uid()), # TODO(robertwb): Possible name collision. step_name=stage_name + '/inject_source', inputs={target_name: beam_fn_api_pb2.Target.List()}, outputs={ 'out': beam_fn_api_pb2.PCollection( coder_reference=coder_id(source_coder)) }) if data_operation_spec: input_ptransform.function_spec.data.Pack(data_operation_spec) transforms.append(input_ptransform) # Read the elements out of the source. fn = sdk_worker.pack_function_spec_data( OLDE_SOURCE_SPLITTABLE_DOFN_DATA, sdk_worker.PYTHON_DOFN_URN, id=self._next_uid()) inputs = { 'ignored_input_tag': beam_fn_api_pb2.Target.List(target=[ beam_fn_api_pb2.Target( primitive_transform_reference=input_transform_id, name='out') ]) } side_inputs = {} elif isinstance(operation, operation_specs.WorkerDoFn): fn = sdk_worker.pack_function_spec_data( operation.serialized_fn, sdk_worker.PYTHON_DOFN_URN, id=self._next_uid()) inputs = as_target(operation.input) # Store the contents of each side input for state access. for si in operation.side_inputs: assert isinstance(si.source, iobase.BoundedSource) element_coder = si.source.default_output_coder() view_id = self._next_uid() # TODO(robertwb): Actually flesh out the ViewFn API. side_inputs[si.tag] = beam_fn_api_pb2.SideInput( view_fn=sdk_worker.serialize_and_pack_py_fn( element_coder, urn=sdk_worker.PYTHON_ITERABLE_VIEWFN_URN, id=view_id)) # Re-encode the elements in the nested context and # concatenate them together output_stream = create_OutputStream() for element in si.source.read( si.source.get_range_tracker(None, None)): element_coder.get_impl().encode_to_stream( element, output_stream, True) elements_data = output_stream.get() state_key = beam_fn_api_pb2.StateKey.MultimapSideInput(key=view_id) state_handler.Clear(state_key) state_handler.Append(state_key, elements_data) elif isinstance(operation, operation_specs.WorkerFlatten): fn = sdk_worker.pack_function_spec_data( operation.serialized_fn, sdk_worker.IDENTITY_DOFN_URN, id=self._next_uid()) inputs = { 'ignored_input_tag': beam_fn_api_pb2.Target.List(target=[ beam_fn_api_pb2.Target( primitive_transform_reference=transform_index_to_id[ input_op_index], name=output_tags(map_task[input_op_index][1])[ input_output_index]) for input_op_index, input_output_index in operation.inputs ]) } side_inputs = {} else: raise TypeError(operation) ptransform = beam_fn_api_pb2.PrimitiveTransform( id=transform_id, function_spec=fn, step_name=stage_name, inputs=inputs, side_inputs=side_inputs, outputs=outputs(operation)) transforms.append(ptransform) process_bundle_descriptor = beam_fn_api_pb2.ProcessBundleDescriptor( id=self._next_uid(), coders=coders.values(), primitive_transform=transforms) return beam_fn_api_pb2.InstructionRequest( instruction_id=self._next_uid(), register=beam_fn_api_pb2.RegisterRequest( process_bundle_descriptor=[process_bundle_descriptor ])), runner_sinks, input_data