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package org.glassfish.jersey.server.spring.scope;
import java.io.IOException;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.container.PreMatching;
import javax.ws.rs.ext.Provider;
import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;
import org.glassfish.jersey.internal.inject.InjectionManager;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.request.AbstractRequestAttributes;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
/**
* Spring filter to provide a bridge between JAX-RS and Spring request attributes.
*
* @author Marko Asplund (marko.asplund at yahoo.com)
* @author Jakub Podlesak (jakub.podlesak at oracle.com)
* @author Marek Potociar (marek.potociar at oracle.com)
*/
@Provider
@PreMatching
public final class RequestContextFilter implements ContainerRequestFilter, ContainerResponseFilter {
private static final String REQUEST_ATTRIBUTES_PROPERTY = RequestContextFilter.class.getName() + ".REQUEST_ATTRIBUTES";
private final SpringAttributeController attributeController;
private static final SpringAttributeController EMPTY_ATTRIBUTE_CONTROLLER = new SpringAttributeController() {
@Override
public void setAttributes(final ContainerRequestContext requestContext) {
}
@Override
public void resetAttributes(final ContainerRequestContext requestContext) {
}
};
private interface SpringAttributeController {
void setAttributes(final ContainerRequestContext requestContext);
void resetAttributes(final ContainerRequestContext requestContext);
}
/**
* Create a new request context filter instance.
*
* @param injectionManager injection manager.
*/
@Inject
public RequestContextFilter(final InjectionManager injectionManager) {
final ApplicationContext appCtx = injectionManager.getInstance(ApplicationContext.class);
final boolean isWebApp = appCtx instanceof WebApplicationContext;
attributeController = appCtx != null ? new SpringAttributeController() {
@Override
public void setAttributes(final ContainerRequestContext requestContext) {
final RequestAttributes attributes;
if (isWebApp) {
final HttpServletRequest httpRequest = injectionManager.getInstance(HttpServletRequest.class);
attributes = new JaxrsServletRequestAttributes(httpRequest, requestContext);
} else {
attributes = new JaxrsRequestAttributes(requestContext);
}
requestContext.setProperty(REQUEST_ATTRIBUTES_PROPERTY, attributes);
RequestContextHolder.setRequestAttributes(attributes);
}
@Override
public void resetAttributes(final ContainerRequestContext requestContext) {
final AbstractRequestAttributes attributes =
(AbstractRequestAttributes) requestContext.getProperty(REQUEST_ATTRIBUTES_PROPERTY);
RequestContextHolder.resetRequestAttributes();
attributes.requestCompleted();
}
} : EMPTY_ATTRIBUTE_CONTROLLER;
}
@Override
public void filter(final ContainerRequestContext requestContext) throws IOException {
attributeController.setAttributes(requestContext);
}
@Override
public void filter(final ContainerRequestContext requestContext, final ContainerResponseContext responseContext)
throws IOException {
attributeController.resetAttributes(requestContext);
}
}