| /* |
| * 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.accumulo.core.client.impl; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.io.DataOutput; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.apache.accumulo.core.client.admin.CompactionStrategyConfig; |
| |
| public class CompactionStrategyConfigUtil { |
| |
| public static final CompactionStrategyConfig DEFAULT_STRATEGY = new CompactionStrategyConfig( |
| "org.apache.accumulo.tserver.compaction.EverythingCompactionStrategy") { |
| @Override |
| public CompactionStrategyConfig setOptions(Map<String,String> opts) { |
| throw new UnsupportedOperationException(); |
| } |
| }; |
| |
| private static final int MAGIC = 0xcc5e6024; |
| |
| public static void encode(DataOutput dout, CompactionStrategyConfig csc) throws IOException { |
| |
| dout.writeInt(MAGIC); |
| dout.writeByte(1); |
| |
| dout.writeUTF(csc.getClassName()); |
| dout.writeInt(csc.getOptions().size()); |
| |
| for (Entry<String,String> entry : csc.getOptions().entrySet()) { |
| dout.writeUTF(entry.getKey()); |
| dout.writeUTF(entry.getValue()); |
| } |
| |
| } |
| |
| public static byte[] encode(CompactionStrategyConfig csc) { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| DataOutputStream dos = new DataOutputStream(baos); |
| |
| try { |
| encode(dos, csc); |
| dos.close(); |
| |
| return baos.toByteArray(); |
| } catch (IOException ioe) { |
| throw new RuntimeException(ioe); |
| } |
| } |
| |
| public static CompactionStrategyConfig decode(DataInput din) throws IOException { |
| if (din.readInt() != MAGIC) { |
| throw new IllegalArgumentException("Unexpected MAGIC "); |
| } |
| |
| if (din.readByte() != 1) { |
| throw new IllegalArgumentException("Unexpected version"); |
| } |
| |
| String classname = din.readUTF(); |
| int numEntries = din.readInt(); |
| |
| HashMap<String,String> opts = new HashMap<>(); |
| |
| for (int i = 0; i < numEntries; i++) { |
| String k = din.readUTF(); |
| String v = din.readUTF(); |
| opts.put(k, v); |
| } |
| |
| return new CompactionStrategyConfig(classname).setOptions(opts); |
| } |
| |
| public static CompactionStrategyConfig decode(byte[] encodedCsc) { |
| ByteArrayInputStream bais = new ByteArrayInputStream(encodedCsc); |
| DataInputStream dis = new DataInputStream(bais); |
| |
| try { |
| return decode(dis); |
| } catch (IOException ioe) { |
| throw new RuntimeException(ioe); |
| } |
| } |
| } |