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package org.glassfish.jersey.server.internal.routing;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.function.Function;
import javax.ws.rs.core.Configuration;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.internal.util.collection.Values;
import org.glassfish.jersey.message.MessageBodyWorkers;
import org.glassfish.jersey.server.internal.JerseyResourceContext;
import org.glassfish.jersey.server.internal.ProcessingProviders;
import org.glassfish.jersey.server.internal.process.Endpoint;
import org.glassfish.jersey.server.model.ModelProcessor;
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.server.spi.internal.ValueParamProvider;
import org.glassfish.jersey.uri.PathPattern;
import org.glassfish.jersey.uri.UriTemplate;
/**
* 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
*/
final class RuntimeModelBuilder {
private final ResourceMethodInvoker.Builder resourceMethodInvokerBuilder;
private final MessageBodyWorkers messageBodyWorkers;
private final ProcessingProviders processingProviders;
// SubResourceLocator Model Builder.
private final Value locatorBuilder;
/**
* Create a new instance of the runtime model builder.
*
* @param resourceContext Jersey resource context.
* @param config configuration of the application.
* @param messageBodyWorkers message body messageBodyWorkers.
* @param processingProviders processing providers.
* @param resourceMethodInvokerBuilder method invoker builder.
* @param modelProcessors all registered model processors.
* @param createServiceFunction function that is able to create and initialize new service.
*/
public RuntimeModelBuilder(
final JerseyResourceContext resourceContext,
final Configuration config,
final MessageBodyWorkers messageBodyWorkers,
final Collection valueSuppliers,
final ProcessingProviders processingProviders,
final ResourceMethodInvoker.Builder resourceMethodInvokerBuilder,
final Iterable modelProcessors,
final Function, ?> createServiceFunction) {
this.resourceMethodInvokerBuilder = resourceMethodInvokerBuilder;
this.messageBodyWorkers = messageBodyWorkers;
this.processingProviders = processingProviders;
this.locatorBuilder = Values.lazy((Value)
() -> new RuntimeLocatorModelBuilder(config, messageBodyWorkers, valueSuppliers, resourceContext,
RuntimeModelBuilder.this, modelProcessors, createServiceFunction));
}
private Router createMethodRouter(final ResourceMethod resourceMethod) {
Router methodAcceptor = null;
switch (resourceMethod.getType()) {
case RESOURCE_METHOD:
case SUB_RESOURCE_METHOD:
methodAcceptor = Routers.endpoint(createInflector(resourceMethod));
break;
case SUB_RESOURCE_LOCATOR:
methodAcceptor = locatorBuilder.get().getRouter(resourceMethod);
break;
}
return new PushMethodHandlerRouter(resourceMethod.getInvocable().getHandler(), methodAcceptor);
}
private Endpoint createInflector(final ResourceMethod method) {
return resourceMethodInvokerBuilder.build(
method,
processingProviders
);
}
private Router createRootRouter(final PathMatchingRouterBuilder lastRoutedBuilder, final 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.noop();
}
if (subResourceMode) {
return routingRoot;
} else {
return new MatchResultInitializerRouter(routingRoot);
}
}
/**
* 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(final RuntimeResourceModel resourceModel, final boolean subResourceMode) {
final List runtimeResources = resourceModel.getRuntimeResources();
final PushMatchedUriRouter uriPushingRouter = new PushMatchedUriRouter();
PathMatchingRouterBuilder currentRouterBuilder = null;
// route methods
for (final RuntimeResource resource : runtimeResources) {
final PushMatchedRuntimeResourceRouter resourcePushingRouter = new PushMatchedRuntimeResourceRouter(resource);
// resource methods
if (!resource.getResourceMethods().isEmpty()) {
final List methodRoutings = createResourceMethodRouters(resource, subResourceMode);
final Router methodSelectingRouter = new MethodSelectingRouter(messageBodyWorkers, methodRoutings);
if (subResourceMode) {
currentRouterBuilder = startNextRoute(currentRouterBuilder, PathPattern.END_OF_PATH_PATTERN)
.to(resourcePushingRouter)
.to(methodSelectingRouter);
} else {
currentRouterBuilder = startNextRoute(currentRouterBuilder, PathPattern.asClosed(resource.getPathPattern()))
.to(uriPushingRouter)
.to(resourcePushingRouter)
.to(methodSelectingRouter);
}
}
PathMatchingRouterBuilder srRoutedBuilder = null;
if (!resource.getChildRuntimeResources().isEmpty()) {
for (final RuntimeResource childResource : resource.getChildRuntimeResources()) {
final PathPattern childOpenPattern = childResource.getPathPattern();
final PathPattern childClosedPattern = PathPattern.asClosed(childOpenPattern);
final PushMatchedRuntimeResourceRouter childResourcePushingRouter =
new PushMatchedRuntimeResourceRouter(childResource);
// sub resource methods
if (!childResource.getResourceMethods().isEmpty()) {
final List childMethodRoutings =
createResourceMethodRouters(childResource, subResourceMode);
srRoutedBuilder = startNextRoute(srRoutedBuilder, childClosedPattern)
.to(uriPushingRouter)
.to(childResourcePushingRouter)
.to(new MethodSelectingRouter(messageBodyWorkers, childMethodRoutings));
}
// sub resource locator
if (childResource.getResourceLocator() != null) {
final PushMatchedTemplateRouter locTemplateRouter =
getTemplateRouterForChildLocator(subResourceMode, childResource);
srRoutedBuilder = startNextRoute(srRoutedBuilder, childOpenPattern)
.to(uriPushingRouter)
.to(locTemplateRouter)
.to(childResourcePushingRouter)
.to(new PushMatchedMethodRouter(childResource.getResourceLocator()))
.to(createMethodRouter(childResource.getResourceLocator()));
}
}
}
// resource locator with empty path
if (resource.getResourceLocator() != null) {
final PushMatchedTemplateRouter resourceTemplateRouter = getTemplateRouter(subResourceMode,
getLocatorResource(resource).getPathPattern().getTemplate(),
PathPattern.OPEN_ROOT_PATH_PATTERN.getTemplate());
srRoutedBuilder = startNextRoute(srRoutedBuilder, PathPattern.OPEN_ROOT_PATH_PATTERN)
.to(uriPushingRouter)
.to(resourceTemplateRouter)
.to(new PushMatchedMethodRouter(resource.getResourceLocator()))
.to(createMethodRouter(resource.getResourceLocator()));
}
if (srRoutedBuilder != null) {
final Router methodRouter = srRoutedBuilder.build();
if (subResourceMode) {
currentRouterBuilder = startNextRoute(currentRouterBuilder, PathPattern.OPEN_ROOT_PATH_PATTERN)
.to(resourcePushingRouter)
.to(methodRouter);
} else {
currentRouterBuilder = startNextRoute(currentRouterBuilder, resource.getPathPattern())
.to(uriPushingRouter)
.to(resourcePushingRouter)
.to(methodRouter);
}
}
}
return createRootRouter(currentRouterBuilder, subResourceMode);
}
private PushMatchedTemplateRouter getTemplateRouterForChildLocator(final boolean subResourceMode,
final RuntimeResource child) {
int i = 0;
for (final Resource res : child.getResources()) {
if (res.getResourceLocator() != null) {
return getTemplateRouter(subResourceMode,
child.getParentResources().get(i).getPathPattern().getTemplate(),
res.getPathPattern().getTemplate());
}
i++;
}
return null;
}
private PushMatchedTemplateRouter getTemplateRouter(final boolean subResourceMode, final UriTemplate parentTemplate,
final UriTemplate childTemplate) {
if (childTemplate != null) {
return new PushMatchedTemplateRouter(
subResourceMode ? PathPattern.OPEN_ROOT_PATH_PATTERN.getTemplate() : parentTemplate,
childTemplate);
} else {
return new PushMatchedTemplateRouter(
subResourceMode ? PathPattern.END_OF_PATH_PATTERN.getTemplate() : parentTemplate);
}
}
private Resource getLocatorResource(final RuntimeResource resource) {
for (final Resource res : resource.getResources()) {
if (res.getResourceLocator() != null) {
return res;
}
}
return null;
}
private List createResourceMethodRouters(
final RuntimeResource runtimeResource, final boolean subResourceMode) {
final List methodRoutings = new ArrayList<>();
int i = 0;
for (final Resource resource : runtimeResource.getResources()) {
final Resource parentResource = runtimeResource.getParent() == null
? null : runtimeResource.getParentResources().get(i++);
final UriTemplate template = resource.getPathPattern().getTemplate();
final PushMatchedTemplateRouter templateRouter = parentResource == null
? getTemplateRouter(subResourceMode, template, null)
: getTemplateRouter(subResourceMode, parentResource.getPathPattern().getTemplate(), template);
for (final ResourceMethod resourceMethod : resource.getResourceMethods()) {
methodRoutings.add(new MethodRouting(resourceMethod,
templateRouter,
new PushMatchedMethodRouter(resourceMethod),
createMethodRouter(resourceMethod)));
}
}
return methodRoutings.isEmpty() ? Collections.emptyList() : methodRoutings;
}
private PathToRouterBuilder startNextRoute(final PathMatchingRouterBuilder currentRouterBuilder, PathPattern routingPattern) {
return currentRouterBuilder == null
? PathMatchingRouterBuilder.newRoute(routingPattern) : currentRouterBuilder.route(routingPattern);
}
}
