Construct a request for a TensorFlow service

syntax = "proto3";
option cc_enable_arenas = true;
option java_package = "com.aliyun.openservices.eas.predict.proto";
option java_outer_classname = "PredictProtos";
enum ArrayDataType {
  // Not a legal value for DataType. Used to indicate a DataType field
  // has not been set.
  DT_INVALID = 0;
  // Data types that all computation devices are expected to be
  // capable to support.
  DT_FLOAT = 1;
  DT_DOUBLE = 2;
  DT_INT32 = 3;
  DT_UINT8 = 4;
  DT_INT16 = 5;
  DT_INT8 = 6;
  DT_STRING = 7;
  DT_COMPLEX64 = 8;  // Single-precision complex.
  DT_INT64 = 9;
  DT_BOOL = 10;
  DT_QINT8 = 11;     // Quantized int8.
  DT_QUINT8 = 12;    // Quantized uint8.
  DT_QINT32 = 13;    // Quantized int32.
  DT_BFLOAT16 = 14;  // Float32 truncated to 16 bits.  Only for cast ops.
  DT_QINT16 = 15;    // Quantized int16.
  DT_QUINT16 = 16;   // Quantized uint16.
  DT_UINT16 = 17;
  DT_COMPLEX128 = 18;  // Double-precision complex.
  DT_HALF = 19;
  DT_RESOURCE = 20;
  DT_VARIANT = 21;  // Arbitrary C++ data types.
}
// Dimensions of an array.
message ArrayShape {
  repeated int64 dim = 1 [packed = true];
}
// Protocol buffer representing an array.
message ArrayProto {
  // Data Type.
  ArrayDataType dtype = 1;
  // Shape of the array.
  ArrayShape array_shape = 2;
  // DT_FLOAT.
  repeated float float_val = 3 [packed = true];
  // DT_DOUBLE.
  repeated double double_val = 4 [packed = true];
  // DT_INT32, DT_INT16, DT_INT8, DT_UINT8.
  repeated int32 int_val = 5 [packed = true];
  // DT_STRING.
  repeated bytes string_val = 6;
  // DT_INT64.
  repeated int64 int64_val = 7 [packed = true];
  // DT_BOOL.
  repeated bool bool_val = 8 [packed = true];
}
// PredictRequest specifies which TensorFlow model to run, as well as
// how inputs are mapped to tensors and how outputs are filtered before
// returning to user.
message PredictRequest {
  // A named signature to evaluate. If unspecified, the default signature
  // will be used.
  string signature_name = 1;
  // Input tensors.
  // Names of input tensor are alias names. The mapping from aliases to real
  // input tensor names is expected to be stored as named generic signature
  // under the key "inputs" in the model export.
  // Each alias listed in a generic signature named "inputs" should be provided
  // exactly once in order to run the prediction.
  map<string, ArrayProto> inputs = 2;
  // Output filter.
  // Names specified are alias names. The mapping from aliases to real output
  // tensor names is expected to be stored as named generic signature under
  // the key "outputs" in the model export.
  // Only tensors specified here will be run/fetched and returned, with the
  // exception that when none is specified, all tensors specified in the
  // named signature will be run/fetched and returned.
  repeated string output_filter = 3;
}
// Response for PredictRequest on successful run.
message PredictResponse {
  // Output tensors.
  map<string, ArrayProto> outputs = 1;
}

#/bin/bash
PROTOC_ZIP=protoc-3.3.0-linux-x86_64.zip
curl -OL https://github.com/google/protobuf/releases/download/v3.3.0/$PROTOC_ZIP
unzip -o $PROTOC_ZIP -d ./ bin/protoc
rm -f $PROTOC_ZIP

• Java

  $ bin/protoc --java_out=./ tf.proto

  After the command completes, the request code file com/aliyun/openservices/eas/predict/proto/PredictProtos.java is generated in the current directory. Import the file to the project.
• Python

  $ bin/protoc --python_out=./ tf.proto

  After the command completes, the request code file tf_pb2.py is generated in the current directory. Run the import command to import the file to the project.
• C++

  $ bin/protoc --cpp_out=./ tf.proto

  After the command completes, the request code files including tf.pb.cc and tf.pb.h are generated in the current directory. Add the include tf.pb.h command to the code and add tf.pb.cc to the compile list.