/*
* Copyright 2002-2016 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.integration.transformer;
import org.springframework.integration.context.IntegrationObjectSupport;
import org.springframework.integration.support.AbstractIntegrationMessageBuilder;
import org.springframework.messaging.Message;
import org.springframework.util.Assert;
/**
* Transformer that removes Message headers.
*
* @author Mark Fisher
* @author Oleg Zhurakousky
* @author Gary Russell
* @since 2.0
*/
public class HeaderFilter extends IntegrationObjectSupport implements Transformer {
private final String[] headersToRemove;
private volatile boolean patternMatch = true;
public HeaderFilter(String... headersToRemove) {
Assert.notEmpty(headersToRemove, "At least one header name to remove is required.");
this.headersToRemove = headersToRemove;
}
public void setPatternMatch(boolean patternMatch) {
this.patternMatch = patternMatch;
}
@Override
public String getComponentType() {
return "header-filter";
}
@Override
public Message<?> transform(Message<?> message) {
AbstractIntegrationMessageBuilder<?> builder = this.getMessageBuilderFactory().fromMessage(message);
if (this.patternMatch) {
builder.removeHeaders(this.headersToRemove);
}
else {
for (String headerToRemove : this.headersToRemove) {
builder.removeHeader(headerToRemove);
}
}
return builder.build();
}
}