org.eclipse.jetty.spdy.server.http.PushStrategy Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.spdy.server.http;
import java.util.Collections;
import java.util.Set;
import org.eclipse.jetty.spdy.api.Stream;
import org.eclipse.jetty.util.Fields;
/**
* {@link PushStrategy} encapsulates the decisions about performing
* SPDY pushes of secondary resources associated with a primary resource.
*/
public interface PushStrategy
{
/**
* Applies the SPDY push logic for the primary resource.
*
* @param stream the primary resource stream
* @param requestHeaders the primary resource request headers
* @param responseHeaders the primary resource response headers
* @return a list of secondary resource URIs to push
*/
public Set apply(Stream stream, Fields requestHeaders, Fields responseHeaders);
/**
* An implementation that returns an empty list of secondary resources
*/
public static class None implements PushStrategy
{
@Override
public Set apply(Stream stream, Fields requestHeaders, Fields responseHeaders)
{
return Collections.emptySet();
}
}
}