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/* Copyright 2016 The TensorFlow Authors. All Rights Reserved.

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 = "proto3";

package tensorflow;

import "tensorflow/core/util/event.proto";

// Reply message from EventListener to the client, i.e., to the source of the
// Event protocol buffers, e.g., debug ops inserted by a debugged runtime to a
// TensorFlow graph being executed.
message EventReply {
  message DebugOpStateChange {
    enum Change {
      DISABLE = 0;
      ENABLE = 1;
    }

    Change change = 1;
    string node_name = 2;
    int32 output_slot = 3;
    string debug_op = 4;
  }

  repeated DebugOpStateChange debug_op_state_changes = 1;
}

// EventListener: Receives Event protos, e.g., from debugged TensorFlow
// runtime(s).
service EventListener {
  // Client(s) can use this RPC method to send the EventListener Event protos.
  // The Event protos can hold information such as:
  //   1) intermediate tensors from a debugged graph being executed, which can
  //      be sent from DebugIdentity ops configured with grpc URLs.
  //   2) GraphDefs of partition graphs, which can be sent from special debug
  //      ops that get executed immediately after the beginning of the graph
  //      execution.
  rpc SendEvents(stream Event) returns (stream EventReply);
}