duli559 commented on a change in pull request #157: URL: https://github.com/apache/incubator-tubemq/pull/157#discussion_r441926036
########## File path: tubemq-connectors/tubemq-connector-flink/src/main/java/org/apache/flink/connectors/tubemq/TubemqSinkFunction.java ########## @@ -0,0 +1,178 @@ +/* + * 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.flink.connectors.tubemq; + +import static org.apache.flink.connectors.tubemq.TubemqOptions.MAX_RETRIES; + +import java.io.IOException; +import java.util.HashSet; + +import org.apache.commons.lang3.StringUtils; +import org.apache.flink.api.common.serialization.SerializationSchema; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.runtime.state.FunctionInitializationContext; +import org.apache.flink.runtime.state.FunctionSnapshotContext; +import org.apache.flink.streaming.api.checkpoint.CheckpointedFunction; +import org.apache.flink.streaming.api.functions.sink.RichSinkFunction; +import org.apache.flink.types.Row; +import org.apache.flink.util.ExceptionUtils; +import org.apache.flink.util.Preconditions; +import org.apache.tubemq.client.config.TubeClientConfig; +import org.apache.tubemq.client.factory.MessageSessionFactory; +import org.apache.tubemq.client.factory.TubeSingleSessionFactory; +import org.apache.tubemq.client.producer.MessageProducer; +import org.apache.tubemq.client.producer.MessageSentResult; +import org.apache.tubemq.corebase.Message; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class TubemqSinkFunction<T> extends RichSinkFunction<T> implements CheckpointedFunction { + + private static final Logger LOG = LoggerFactory.getLogger(TubemqSinkFunction.class); + + private static final String TID = "tid"; + + /** + * The address of tubemq master, format eg: 127.0.0.1:8080,127.0.0.2:8081. + */ + private final String masterAddress; + + /** + * The topic name. + */ + private final String topic; + + /** + * The tid of this topic + */ + private final String tid; + /** + * The serializer for the records sent to pulsar. + */ + private final SerializationSchema<T> serializationSchema; + + /** + * The tubemq producer. + */ + private transient MessageProducer producer; + + /** + * The tubemq session factory. + */ + private transient MessageSessionFactory sessionFactory; + + /** + * The maximum number of retries. + */ + private final int maxRetries; + + public TubemqSinkFunction(String topic, + String masterAddress, + SerializationSchema<T> serializationSchema, + Configuration configuration) { + Preconditions.checkNotNull(topic, + "The topic must not be null."); + Preconditions.checkNotNull(masterAddress, + "The master address must not be null."); + Preconditions.checkNotNull(serializationSchema, + "The serialization schema must not be null."); + Preconditions.checkNotNull(configuration, + "The configuration must not be null."); + + this.topic = topic; + this.masterAddress = masterAddress; + this.serializationSchema = serializationSchema; + this.tid = configuration.getString(TubemqOptions.TID); + this.maxRetries = configuration.getInteger(MAX_RETRIES); + } + + @Override + public void snapshotState(FunctionSnapshotContext functionSnapshotContext) { + // Nothing to do. + } + + @Override + public void initializeState(FunctionInitializationContext functionInitializationContext) { + // Nothing to do. + } + + @Override + public void open(Configuration parameters) throws Exception { + super.open(parameters); + + TubeClientConfig tubeClientConfig = new TubeClientConfig(masterAddress); + this.sessionFactory = new TubeSingleSessionFactory(tubeClientConfig); + this.producer = sessionFactory.createProducer(); + HashSet<String> hashSet = new HashSet<>(); + hashSet.add(topic); + producer.publish(hashSet); + } + + @Override + public void invoke(T in, Context context) throws Exception { + + int retries = 0; + Exception exception = null; + + while (maxRetries <= 0 || retries < maxRetries) { + + try { + byte[] body = serializationSchema.serialize(in); + Message message = new Message(topic, body); + if (StringUtils.isNotBlank(tid)) { + message.setAttrKeyVal(TID, tid); Review comment: ok ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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