| /* |
| * 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.carbon.flink; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.nio.ByteBuffer; |
| import java.util.Properties; |
| |
| import org.apache.flink.core.io.SimpleVersionedSerializer; |
| |
| public final class ProxyRecoverableSerializer |
| implements SimpleVersionedSerializer<ProxyRecoverable> { |
| |
| public static final ProxyRecoverableSerializer INSTANCE = new ProxyRecoverableSerializer(); |
| |
| public static final int VERSION = 1; |
| |
| private static final byte TRUE = 0; |
| |
| private static final byte FALSE = 1; |
| |
| private static final String CHARSET = "UTF-8"; |
| |
| // TODO: make it configurable |
| private static final int BUFFER_SIZE = 10240; |
| |
| private ProxyRecoverableSerializer() { |
| // private constructor. |
| } |
| |
| @Override |
| public int getVersion() { |
| return VERSION; |
| } |
| |
| @Override |
| public byte[] serialize(final ProxyRecoverable proxyRecoverable) { |
| final ByteBuffer byteBuffer = ByteBuffer.allocate(BUFFER_SIZE); |
| serializeString(byteBuffer, proxyRecoverable.getWriterType()); |
| serializeConfiguration(byteBuffer, proxyRecoverable.getWriterConfiguration()); |
| serializeString(byteBuffer, proxyRecoverable.getPartition()); |
| final byte[] bytes = new byte[byteBuffer.position()]; |
| byteBuffer.position(0); |
| byteBuffer.get(bytes); |
| return bytes; |
| } |
| |
| private static void serializeConfiguration( |
| final ByteBuffer byteBuffer, |
| final ProxyFileWriterFactory.Configuration configuration |
| ) { |
| serializeString(byteBuffer, configuration.getDatabaseName()); |
| serializeString(byteBuffer, configuration.getTableName()); |
| serializeString(byteBuffer, configuration.getTablePath()); |
| serializeProperties(byteBuffer, configuration.getTableProperties()); |
| serializeProperties(byteBuffer, configuration.getWriterProperties()); |
| serializeProperties(byteBuffer, configuration.getCarbonProperties()); |
| } |
| |
| private static void serializeString(final ByteBuffer byteBuffer, final String string) { |
| if (string == null) { |
| byteBuffer.put(TRUE); |
| } else { |
| byteBuffer.put(FALSE); |
| final byte[] stringBytes; |
| try { |
| stringBytes = string.getBytes(CHARSET); |
| } catch (UnsupportedEncodingException exception) { |
| throw new RuntimeException(exception); |
| } |
| byteBuffer.putInt(stringBytes.length); |
| byteBuffer.put(stringBytes); |
| } |
| } |
| |
| private static void serializeProperties( |
| final ByteBuffer byteBuffer, |
| final Properties properties |
| ) { |
| if (properties == null) { |
| byteBuffer.put(TRUE); |
| } else { |
| byteBuffer.put(FALSE); |
| byteBuffer.putInt(properties.size()); |
| for (String propertyName : properties.stringPropertyNames()) { |
| serializeString(byteBuffer, propertyName); |
| serializeString(byteBuffer, properties.getProperty(propertyName)); |
| } |
| } |
| } |
| |
| @Override |
| public ProxyRecoverable deserialize(final int version, final byte[] bytes) { |
| if (version != VERSION) { |
| throw new UnsupportedOperationException("Unsupported version: " + version + "."); |
| } |
| final ByteBuffer byteBuffer = ByteBuffer.wrap(bytes); |
| final String writerType = deserializeString(byteBuffer); |
| final ProxyFileWriterFactory.Configuration writerConfiguration = |
| deserializeConfiguration(byteBuffer); |
| final String partition = deserializeString(byteBuffer); |
| return new ProxyRecoverable(writerType, writerConfiguration, partition); |
| } |
| |
| private static ProxyFileWriterFactory.Configuration deserializeConfiguration( |
| final ByteBuffer byteBuffer |
| ) { |
| final String databaseName = deserializeString(byteBuffer); |
| final String tableName = deserializeString(byteBuffer); |
| final String tablePath = deserializeString(byteBuffer); |
| final Properties tableProperties = deserializeProperties(byteBuffer); |
| final Properties writerProperties = deserializeProperties(byteBuffer); |
| final Properties carbonProperties = deserializeProperties(byteBuffer); |
| return new ProxyFileWriterFactory.Configuration( |
| databaseName, |
| tableName, |
| tablePath, |
| tableProperties, |
| writerProperties, |
| carbonProperties |
| ); |
| } |
| |
| private static String deserializeString(final ByteBuffer byteBuffer) { |
| switch (byteBuffer.get()) { |
| case TRUE: |
| return null; |
| case FALSE: |
| final int stringByteLength = byteBuffer.getInt(); |
| final byte[] stringBytes = new byte[stringByteLength]; |
| byteBuffer.get(stringBytes); |
| try { |
| return new String(stringBytes, CHARSET); |
| } catch (UnsupportedEncodingException exception) { |
| throw new RuntimeException(exception); |
| } |
| default: |
| throw new RuntimeException(); |
| } |
| } |
| |
| @SuppressWarnings("ConstantConditions") |
| private static Properties deserializeProperties(final ByteBuffer byteBuffer) { |
| switch (byteBuffer.get()) { |
| case TRUE: |
| return null; |
| case FALSE: |
| final int propertyCount = byteBuffer.getInt(); |
| final Properties properties = new Properties(); |
| for (int index = 0; index < propertyCount; index++) { |
| properties.put(deserializeString(byteBuffer), deserializeString(byteBuffer)); |
| } |
| return properties; |
| default: |
| throw new RuntimeException(); |
| } |
| } |
| |
| } |