1 /* Copyright 2020 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_CORE_DATA_SERVICE_SPLIT_PROVIDER_H_ 17 #define TENSORFLOW_CORE_DATA_SERVICE_SPLIT_PROVIDER_H_ 18 19 #include <queue> 20 21 #include "tensorflow/core/data/service/data_service.h" 22 #include "tensorflow/core/framework/dataset.h" 23 24 namespace tensorflow { 25 namespace data { 26 27 // SplitProvider which reads splits from a tf.data service dispatcher over RPC. 28 class DataServiceSplitProvider : public SplitProvider { 29 public: DataServiceSplitProvider(const std::string & address,const std::string & protocol,int64 job_id,int64 timeout_ms)30 DataServiceSplitProvider(const std::string& address, 31 const std::string& protocol, int64 job_id, 32 int64 timeout_ms) 33 : address_(address), 34 protocol_(protocol), 35 job_id_(job_id), 36 timeout_ms_(timeout_ms) {} 37 38 Status GetNext(Tensor* split, bool* end_of_splits) override; 39 Status Reset() override; 40 Status Save(std::function<std::string(std::string)> full_name, 41 IteratorStateWriter* writer) override; 42 Status Restore(std::function<std::string(std::string)> full_name, 43 IteratorStateReader* reader) override; 44 45 private: 46 const std::string address_; 47 const std::string protocol_; 48 const int64 job_id_; 49 const int64 timeout_ms_; 50 51 mutex mu_; 52 int64 repetition_ = 0; 53 std::unique_ptr<DataServiceDispatcherClient> dispatcher_; 54 }; 55 56 } // namespace data 57 } // namespace tensorflow 58 59 #endif // TENSORFLOW_CORE_DATA_SERVICE_SPLIT_PROVIDER_H_ 60