protos/perfetto/common/observable_events.proto

/*
 * Copyright (C) 2019 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.
 */

syntax = "proto2";
option optimize_for = LITE_RUNTIME;

package perfetto.protos;

message ObservableEvents {
  enum Type {
    TYPE_UNSPECIFIED = 0;
    // State changes of data source instances associated with the consumer's
    // session. Note that not all data sources may support these notifications.
    TYPE_DATA_SOURCES_INSTANCES = 1;
    // TODO(eseckler): Extend this for producer & data source registrations.
  }

  enum DataSourceInstanceState {
    // A data source is created in stopped state.
    DATA_SOURCE_INSTANCE_STATE_STOPPED = 1;
    DATA_SOURCE_INSTANCE_STATE_STARTED = 2;
  }

  message DataSourceInstanceStateChange {
    optional string producer_name = 1;
    optional string data_source_name = 2;
    optional DataSourceInstanceState state = 3;
  }

  repeated DataSourceInstanceStateChange instance_state_changes = 1;
}