| # Copyright (C) 2020 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| from google.protobuf import descriptor_pb2 |
| from google.protobuf import message_factory |
| from google.protobuf.descriptor_pool import DescriptorPool |
| |
| from perfetto.trace_processor.platform import PlatformDelegate |
| |
| |
| class ProtoFactory: |
| |
| def __init__(self, platform_delegate: PlatformDelegate): |
| # Declare descriptor pool |
| self.descriptor_pool = DescriptorPool() |
| |
| # Load trace processor descriptor and add to descriptor pool |
| tp_desc = platform_delegate.get_resource('trace_processor.descriptor') |
| tp_file_desc_set_pb2 = descriptor_pb2.FileDescriptorSet() |
| tp_file_desc_set_pb2.MergeFromString(tp_desc) |
| |
| for f_desc_pb2 in tp_file_desc_set_pb2.file: |
| self.descriptor_pool.Add(f_desc_pb2) |
| |
| # Load metrics descriptor and add to descriptor pool |
| metrics_desc = platform_delegate.get_resource('metrics.descriptor') |
| metrics_file_desc_set_pb2 = descriptor_pb2.FileDescriptorSet() |
| metrics_file_desc_set_pb2.MergeFromString(metrics_desc) |
| |
| for f_desc_pb2 in metrics_file_desc_set_pb2.file: |
| self.descriptor_pool.Add(f_desc_pb2) |
| |
| def create_message_factory(message_type): |
| message_desc = self.descriptor_pool.FindMessageTypeByName(message_type) |
| if hasattr(message_factory, 'GetMessageClass'): |
| return message_factory.GetMessageClass(message_desc) |
| return message_factory.MessageFactory().GetPrototype(message_desc) |
| |
| # Create proto messages to correctly communicate with the RPC API by sending |
| # and receiving data as protos |
| self.AppendTraceDataResult = create_message_factory( |
| 'perfetto.protos.AppendTraceDataResult') |
| self.StatusResult = create_message_factory('perfetto.protos.StatusResult') |
| self.ComputeMetricArgs = create_message_factory( |
| 'perfetto.protos.ComputeMetricArgs') |
| self.ComputeMetricResult = create_message_factory( |
| 'perfetto.protos.ComputeMetricResult') |
| self.QueryArgs = create_message_factory('perfetto.protos.QueryArgs') |
| self.QueryResult = create_message_factory('perfetto.protos.QueryResult') |
| self.TraceMetrics = create_message_factory('perfetto.protos.TraceMetrics') |
| self.DisableAndReadMetatraceResult = create_message_factory( |
| 'perfetto.protos.DisableAndReadMetatraceResult') |
| self.CellsBatch = create_message_factory( |
| 'perfetto.protos.QueryResult.CellsBatch') |
