SystemResolver.java
/*
* Copyright (c) 2018, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* 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.apache.synapse.config.xml.endpoints.resolvers;
/**
* System resolver can be used to resolve environment variables in the synapse config.
*/
public class SystemResolver implements Resolver {
private String input;
/**
* set environment variable which needs to resolved
**/
@Override
public void setVariable(String input) {
this.input = input;
}
/**
* environment variable is resolved in this function
* @return resolved value for the environment variable
*/
@Override
public String resolve() {
String envValue = System.getenv(input);
if (envValue == null) {
throw new ResolverException("Environment variable could not be found");
}
return envValue;
}
}