syntax = "proto3";

package tensorflow;
option cc_enable_arenas = true;
option java_outer_classname = "DebugProtos";
option java_multiple_files = true;
option java_package = "org.tensorflow.framework";

// EXPERIMENTAL. Option for watching a node.
message DebugTensorWatch {
  // Name of the node to watch.
  string node_name = 1;

  // Output slot to watch.
  // The semantics of output_slot == -1 is that the node is only watched for
  // completion, but not for any output tensors. See NodeCompletionCallback
  // in debug_gateway.h.
  // TODO(cais): Implement this semantics.
  int32 output_slot = 2;

  // Name(s) of the debugging op(s).
  // One or more than one probes on a tensor.
  // e.g., {"DebugIdentity", "DebugNanCount"}
  repeated string debug_ops = 3;

  // URL(s) for debug targets(s).
  //
  // Supported URL formats are:
  //   - file:///foo/tfdbg_dump: Writes out Event content to file
  //     /foo/tfdbg_dump.  Assumes all directories can be created if they don't
  //     already exist.
  //   - grpc://localhost:11011: Sends an RPC request to an EventListener
  //     service running at localhost:11011 with the event.
  //   - memcbk:///event_key: Routes tensors to clients using the
  //     callback registered with the DebugCallbackRegistry for event_key.
  //
  // Each debug op listed in debug_ops will publish its output tensor (debug
  // signal) to all URLs in debug_urls.
  //
  // N.B. Session::Run() supports concurrent invocations of the same inputs
  // (feed keys), outputs and target nodes. If such concurrent invocations
  // are to be debugged, the callers of Session::Run() must use distinct
  // debug_urls to make sure that the streamed or dumped events do not overlap
  // among the invocations.
  // TODO(cais): More visible documentation of this in g3docs.
  repeated string debug_urls = 4;

  // Do not error out if debug op creation fails (e.g., due to dtype
  // incompatibility). Instead, just log the failure.
  bool tolerate_debug_op_creation_failures = 5;
}

// EXPERIMENTAL. Options for initializing DebuggerState.
message DebugOptions {
  // Debugging options
  repeated DebugTensorWatch debug_tensor_watch_opts = 4;

  // Caller-specified global step count.
  // Note that this is distinct from the session run count and the executor
  // step count.
  int64 global_step = 10;
}

message DebuggedSourceFile {
  // The host name on which a source code file is located.
  string host = 1;

  // Path to the source code file.
  string file_path = 2;

  // The timestamp at which the source code file is last modified.
  int64 last_modified = 3;

  // Byte size of the file.
  int64 bytes = 4;

  // Line-by-line content of the source code file.
  repeated string lines = 5;
}

message DebuggedSourceFiles {
  // A collection of source code files.
  repeated DebuggedSourceFile source_files = 1;
}
