| /* |
| * 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.beam.runners.apex.translation.utils; |
| |
| import com.datatorrent.api.StreamCodec; |
| import com.datatorrent.netlet.util.Slice; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.Serializable; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.coders.Coder.Context; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.annotations.VisibleForTesting; |
| |
| /** The Apex {@link StreamCodec} adapter for using Beam {@link Coder}. */ |
| public class CoderAdapterStreamCodec implements StreamCodec<Object>, Serializable { |
| private static final long serialVersionUID = 1L; |
| private final Coder<? super Object> coder; |
| |
| public CoderAdapterStreamCodec(Coder<? super Object> coder) { |
| this.coder = coder; |
| } |
| |
| @VisibleForTesting |
| public Coder<?> getCoder() { |
| return this.coder; |
| } |
| |
| @Override |
| public Object fromByteArray(Slice fragment) { |
| ByteArrayInputStream bis = |
| new ByteArrayInputStream(fragment.buffer, fragment.offset, fragment.length); |
| try { |
| return coder.decode(bis, Context.OUTER); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| public Slice toByteArray(Object wv) { |
| ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| try { |
| coder.encode(wv, bos, Context.OUTER); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| return new Slice(bos.toByteArray()); |
| } |
| |
| @Override |
| public int getPartition(Object o) { |
| return o.hashCode(); |
| } |
| } |