org.springframework.kafka.config.KafkaStreamsConfiguration Maven / Gradle / Ivy
/*
* Copyright 2018-2019 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.kafka.config;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.springframework.util.Assert;
/**
* Wrapper for {@link org.apache.kafka.streams.StreamsBuilder} properties. The framework
* looks for a bean of this type with name 'defaultKafkaStreamsConfig' and auto-declares a
* {@link StreamsBuilderFactoryBean} using it. The {@link Properties} class is too general
* for such activity.
*
* @author Gary Russell
* @since 2.2
*
*/
public class KafkaStreamsConfiguration {
private final Map configs;
private Properties properties;
public KafkaStreamsConfiguration(Map configs) {
Assert.notNull(configs, "Configuration map cannot be null");
this.configs = new HashMap<>(configs);
}
/**
* Return the configuration map as a {@link Properties}.
* @return the properties.
*/
public Properties asProperties() {
if (this.properties == null) {
Properties props = new Properties();
props.putAll(this.configs);
this.properties = props;
}
return this.properties;
}
}