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package org.glassfish.jersey.server.internal.routing;
import java.util.List;
import javax.inject.Inject;
import org.glassfish.jersey.message.MessageBodyWorkers;
import org.glassfish.jersey.process.Inflector;
import org.glassfish.jersey.server.ContainerRequest;
import org.glassfish.jersey.server.ContainerResponse;
import org.glassfish.jersey.server.internal.ProcessingProviders;
import org.glassfish.jersey.server.internal.routing.RouterBinder.RootRouteBuilder;
import org.glassfish.jersey.server.internal.routing.RouterBinder.RouteBuilder;
import org.glassfish.jersey.server.internal.routing.RouterBinder.RouteToPathBuilder;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceMethod;
import org.glassfish.jersey.server.model.ResourceMethodInvoker;
import org.glassfish.jersey.server.model.RuntimeResource;
import org.glassfish.jersey.server.model.RuntimeResourceModel;
import org.glassfish.jersey.uri.PathPattern;
import org.glassfish.hk2.api.ServiceLocator;
import com.google.common.base.Function;
import com.google.common.collect.Lists;
/**
* This is a common base for root resource and sub-resource runtime model
* builder.
*
* @author Marek Potociar (marek.potociar at oracle.com)
* @author Miroslav Fuksa (miroslav.fuksa at oracle.com)
*/
public final class RuntimeModelBuilder {
private final RootRouteBuilder rootBuilder;
private final ResourceMethodInvoker.Builder resourceMethodInvokerBuilder;
private final ServiceLocator locator;
private final PushMethodHandlerRouter.Builder pushHandlerAcceptorBuilder;
private final MethodSelectingRouter.Builder methodSelectingAcceptorBuilder;
private final MessageBodyWorkers workers;
private final PushMatchedMethodResourceRouter.Builder pushedMatchedMethodResourceBuilder;
private final PushMatchedRuntimeResourceRouter.Builder pushedMatchedRuntimeResourceBuilder;
private ProcessingProviders processingProviders;
/**
* Injection constructor.
*
* @param rootBuilder root router builder.
* @param resourceMethodInvokerBuilder method invoker builder.
* @param locator HK2 service locator.
* @param pushHandlerAcceptorBuilder push handler acceptor builder.
* @param methodSelectingAcceptorBuilder method selecting acceptor builder.
* @param pushedMatchedMethodResourceBuilder push matched method and resource builder.
* @param pushedMatchedRuntimeResourceBuilder push matched runtime resource builder.
* @param workers message body workers.
*/
@Inject
public RuntimeModelBuilder(
final RootRouteBuilder rootBuilder,
final ResourceMethodInvoker.Builder resourceMethodInvokerBuilder,
final ServiceLocator locator,
final PushMethodHandlerRouter.Builder pushHandlerAcceptorBuilder,
final MethodSelectingRouter.Builder methodSelectingAcceptorBuilder,
final PushMatchedMethodResourceRouter.Builder pushedMatchedMethodResourceBuilder,
final PushMatchedRuntimeResourceRouter.Builder pushedMatchedRuntimeResourceBuilder,
final MessageBodyWorkers workers) {
this.rootBuilder = rootBuilder;
this.resourceMethodInvokerBuilder = resourceMethodInvokerBuilder;
this.locator = locator;
this.pushHandlerAcceptorBuilder = pushHandlerAcceptorBuilder;
this.methodSelectingAcceptorBuilder = methodSelectingAcceptorBuilder;
this.workers = workers;
this.pushedMatchedMethodResourceBuilder = pushedMatchedMethodResourceBuilder;
this.pushedMatchedRuntimeResourceBuilder = pushedMatchedRuntimeResourceBuilder;
}
private Router createSingleMethodAcceptor(final ResourceMethod resourceMethod) {
Router methodAcceptor = null;
switch (resourceMethod.getType()) {
case RESOURCE_METHOD:
case SUB_RESOURCE_METHOD:
methodAcceptor = Routers.asTreeAcceptor(createInflector(resourceMethod));
break;
case SUB_RESOURCE_LOCATOR:
methodAcceptor = new SubResourceLocatorRouter(locator, this, resourceMethod);
break;
}
return pushHandlerAcceptorBuilder.build(resourceMethod.getInvocable().getHandler(), methodAcceptor);
}
private Inflector createInflector(final ResourceMethod method) {
return resourceMethodInvokerBuilder.build(
method,
processingProviders
);
}
private Router createRootTreeAcceptor(RouteToPathBuilder lastRoutedBuilder, boolean subResourceMode) {
final Router routingRoot;
if (lastRoutedBuilder != null) {
routingRoot = lastRoutedBuilder.build();
} else {
/**
* Create an empty routing root that accepts any request, does not do
* anything and does not return any inflector. This will cause 404 being
* returned for every request.
*/
routingRoot = Routers.acceptingTree(new Function() {
@Override
public ContainerRequest apply(ContainerRequest input) {
return input;
}
}).build();
}
if (subResourceMode) {
return routingRoot;
} else {
return rootBuilder.root(routingRoot);
}
}
private RouteToPathBuilder routeMethodAcceptor(
final RouteToPathBuilder lastRoutedBuilder,
final PathPattern pathPattern,
final PushMatchedUriRouter uriPushingAcceptor,
final PushMatchedRuntimeResourceRouter resourcePushingRouter,
final Router methodAcceptor, boolean subResourceMode) {
if (subResourceMode) {
return routedBuilder(lastRoutedBuilder).route(pathPattern).to(resourcePushingRouter)
.to(methodAcceptor);
} else {
return routedBuilder(lastRoutedBuilder).route(pathPattern)
.to(uriPushingAcceptor)
.to(resourcePushingRouter)
.to(methodAcceptor);
}
}
/**
* Build a runtime model of routers based on the {@code resourceModel}.
* @param resourceModel Resource model from which the runtime model should be built.
* @param subResourceMode True if the {@code resourceModel} is a sub resource model returned from sub resource locator.
* @return Root router of the router structure representing the resource model.
*/
public Router buildModel(RuntimeResourceModel resourceModel, final boolean subResourceMode) {
final List runtimeResources = resourceModel.getRuntimeResources();
final PushMatchedUriRouter uriPushingRouter = locator.createAndInitialize(PushMatchedUriRouter.class);
RouteToPathBuilder lastRoutedBuilder = null;
// route methods
for (RuntimeResource resource : runtimeResources) {
PushMatchedRuntimeResourceRouter resourcePushingRouter = pushedMatchedRuntimeResourceBuilder.build(resource);
// resource methods
if (resource.getResourceMethods().size() > 0) {
final List methodAcceptors = createAcceptors(resource);
final PathPattern resourceClosedPattern =
(subResourceMode) ? PathPattern.END_OF_PATH_PATTERN : PathPattern.asClosed(resource.getPathPattern());
lastRoutedBuilder = routeMethodAcceptor(
lastRoutedBuilder,
resourceClosedPattern,
uriPushingRouter,
resourcePushingRouter,
methodSelectingAcceptorBuilder.build(workers, methodAcceptors), subResourceMode);
}
RouteToPathBuilder srRoutedBuilder = null;
if (resource.getChildRuntimeResources().size() > 0) {
for (RuntimeResource child : resource.getChildRuntimeResources()) {
final PathPattern childOpenPattern = child.getPathPattern();
final PathPattern childClosedPattern = PathPattern.asClosed(childOpenPattern);
PushMatchedRuntimeResourceRouter childResourcePushingRouter =
pushedMatchedRuntimeResourceBuilder.build(child);
// sub resource methods
if (child.getResourceMethods().size() > 0) {
final List childMethodAcceptors = createAcceptors(child);
srRoutedBuilder = routedBuilder(srRoutedBuilder)
.route(childClosedPattern)
.to(uriPushingRouter)
.to(childResourcePushingRouter)
.to(methodSelectingAcceptorBuilder.build(workers, childMethodAcceptors));
}
// sub resource locator
if (child.getResourceLocator() != null) {
srRoutedBuilder = routedBuilder(srRoutedBuilder)
.route(childOpenPattern)
.to(uriPushingRouter)
.to(childResourcePushingRouter)
.to(createSingleMethodAcceptor(child.getResourceLocator()));
}
}
}
// resource locator with empty path
if (resource.getResourceLocator() != null) {
srRoutedBuilder = routedBuilder(srRoutedBuilder)
.route(PathPattern.OPEN_ROOT_PATH_PATTERN)
.to(uriPushingRouter)
.to(createSingleMethodAcceptor(resource.getResourceLocator()));
}
if (srRoutedBuilder != null) {
final PathPattern resourceOpenPattern =
(subResourceMode) ? PathPattern.OPEN_ROOT_PATH_PATTERN : resource.getPathPattern();
lastRoutedBuilder = routeMethodAcceptor(
lastRoutedBuilder, resourceOpenPattern, uriPushingRouter, resourcePushingRouter,
srRoutedBuilder.build(), subResourceMode);
}
}
return createRootTreeAcceptor(lastRoutedBuilder, subResourceMode);
}
private List createAcceptors(RuntimeResource runtimeResource) {
List acceptorPairList = Lists.newArrayList();
for (Resource resource : runtimeResource.getResources()) {
for (ResourceMethod resourceMethod : resource.getResourceMethods()) {
acceptorPairList.add(new MethodAcceptorPair(resourceMethod,
pushedMatchedMethodResourceBuilder.build(resource, resourceMethod),
createSingleMethodAcceptor(resourceMethod)));
}
}
return acceptorPairList;
}
private RouteBuilder routedBuilder(RouteToPathBuilder lastRoutedBuilder) {
return lastRoutedBuilder == null ? rootBuilder : lastRoutedBuilder;
}
/**
* Set {@link ProcessingProviders processing providers}.
* @param processingProviders processing providers.
*/
public void setProcessingProviders(ProcessingProviders processingProviders) {
this.processingProviders = processingProviders;
}
}
