Java tutorial
/* * 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.kylin.source.kafka.config; import java.util.List; import javax.annotation.Nullable; import org.apache.kafka.common.protocol.SecurityProtocol; import org.apache.kylin.common.persistence.JsonSerializer; import org.apache.kylin.common.persistence.RootPersistentEntity; import org.apache.kylin.common.persistence.Serializer; import com.fasterxml.jackson.annotation.JsonAutoDetect; import com.fasterxml.jackson.annotation.JsonBackReference; import com.fasterxml.jackson.annotation.JsonProperty; import com.google.common.base.Function; import com.google.common.collect.Lists; import kafka.cluster.Broker; /** */ @JsonAutoDetect(fieldVisibility = JsonAutoDetect.Visibility.NONE, getterVisibility = JsonAutoDetect.Visibility.NONE, isGetterVisibility = JsonAutoDetect.Visibility.NONE, setterVisibility = JsonAutoDetect.Visibility.NONE) public class KafkaClusterConfig extends RootPersistentEntity { public static Serializer<KafkaClusterConfig> SERIALIZER = new JsonSerializer<KafkaClusterConfig>( KafkaClusterConfig.class); @JsonProperty("brokers") private List<BrokerConfig> brokerConfigs; @JsonBackReference private KafkaConfig kafkaConfig; public String getTopic() { return kafkaConfig.getTopic(); } public int getTimeout() { return kafkaConfig.getTimeout(); } public List<BrokerConfig> getBrokerConfigs() { return brokerConfigs; } public List<Broker> getBrokers() { return Lists.transform(brokerConfigs, new Function<BrokerConfig, Broker>() { @Nullable @Override public Broker apply(BrokerConfig input) { return new Broker(input.getId(), input.getHost(), input.getPort(), SecurityProtocol.PLAINTEXT); } }); } }