strolch/li.strolch.rest/src/main/java/li/strolch/rest/filters/HttpCacheResponseFilter.java

59 lines
1.8 KiB
Java

/*
* Copyright 2015 Robert von Burg <eitch@eitchnet.ch>
*
* 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 li.strolch.rest.filters;
import java.io.IOException;
import jakarta.annotation.Priority;
import jakarta.ws.rs.Priorities;
import jakarta.ws.rs.container.ContainerRequestContext;
import jakarta.ws.rs.container.ContainerResponseContext;
import jakarta.ws.rs.container.ContainerResponseFilter;
import jakarta.ws.rs.core.HttpHeaders;
import jakarta.ws.rs.core.MultivaluedMap;
import jakarta.ws.rs.ext.Provider;
@Provider
@Priority(Priorities.HEADER_DECORATOR)
public class HttpCacheResponseFilter implements ContainerResponseFilter {
public static final String NO_CACHE = "no-cache"; //$NON-NLS-1$
private static String cacheMode = NO_CACHE;
@Override
public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext)
throws IOException {
MultivaluedMap<String, Object> headers = responseContext.getHeaders();
headers.add(HttpHeaders.CACHE_CONTROL, cacheMode);
}
/**
* @return the cacheMode
*/
public static String getCacheMode() {
return cacheMode;
}
/**
* @param cacheMode
* the cacheMode to set
*/
public static void setCacheMode(String cacheMode) {
HttpCacheResponseFilter.cacheMode = cacheMode;
}
}