| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| package org.apache.ignite.ml.inference.parser; |
| |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import org.apache.ignite.ml.inference.util.DirectorySerializer; |
| import org.tensorflow.SavedModelBundle; |
| import org.tensorflow.Session; |
| |
| /** |
| * Implementation of TensorFlow model parser that accepts serialized directory with "SavedModel" as an input. The |
| * directory is assumed to be serialized by {@link DirectorySerializer}. |
| * |
| * @param <I> Type of model input. |
| * @param <O> Type of model output. |
| */ |
| public class TensorFlowSavedModelModelParser<I, O> extends TensorFlowBaseModelParser<I, O> { |
| /** */ |
| private static final long serialVersionUID = 5638083440240281879L; |
| |
| /** Prefix to be used to create temporary directory for TensorFlow model files. */ |
| private static final String TMP_DIR_PREFIX = "tensorflow_saved_model_"; |
| |
| /** Model tags. */ |
| private final String[] tags; |
| |
| /** |
| * Constructs a new instance of TensorFlow model parser. |
| * |
| * @param tags Model tags. |
| */ |
| public TensorFlowSavedModelModelParser(String... tags) { |
| this.tags = tags; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public Session parseModel(byte[] mdl) { |
| Path dir = null; |
| try { |
| dir = Files.createTempDirectory(TMP_DIR_PREFIX); |
| DirectorySerializer.deserialize(dir.toAbsolutePath(), mdl); |
| SavedModelBundle bundle = SavedModelBundle.load(dir.toString(), tags); |
| return bundle.session(); |
| } |
| catch (IOException | ClassNotFoundException e) { |
| throw new RuntimeException(e); |
| } |
| finally { |
| if (dir != null) |
| DirectorySerializer.deleteDirectory(dir); |
| } |
| } |
| } |