/*
* Copyright 2015 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
*
* 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.springframework.cloud.stream.module.common;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PropertiesLoaderUtils;
import org.springframework.integration.scripting.DefaultScriptVariableGenerator;
import org.springframework.integration.scripting.ScriptVariableGenerator;
import org.springframework.util.CollectionUtils;
/**
* Configuration that provides a {@link ScriptVariableGenerator} to customize a script.
*
* @author David Turanski
* @author Eric Bottard
* @author Mark Fisher
*/
@Configuration
@EnableConfigurationProperties(ScriptVariableProperties.class)
public class ScriptVariableGeneratorConfiguration {
@Autowired
private ScriptVariableProperties properties;
@Bean(name = "variableGenerator")
public ScriptVariableGenerator scriptVariableGenerator() throws IOException {
Map<String, Object> variables = new HashMap<>();
CollectionUtils.mergePropertiesIntoMap(properties.getVariables(), variables);
if (properties.getVariablesLocation() != null) {
CollectionUtils.mergePropertiesIntoMap(
PropertiesLoaderUtils.loadProperties(properties.getVariablesLocation()), variables);
}
return new DefaultScriptVariableGenerator(variables);
}
}