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package com.sun.jersey.server.impl.model;
import com.sun.jersey.api.core.ResourceConfig;
import com.sun.jersey.api.model.AbstractImplicitViewMethod;
import com.sun.jersey.api.model.AbstractResource;
import com.sun.jersey.api.model.AbstractResourceMethod;
import com.sun.jersey.api.model.AbstractSubResourceLocator;
import com.sun.jersey.api.model.AbstractSubResourceMethod;
import com.sun.jersey.api.uri.UriPattern;
import com.sun.jersey.api.view.ImplicitProduces;
import com.sun.jersey.core.header.MediaTypes;
import com.sun.jersey.core.header.QualitySourceMediaType;
import com.sun.jersey.core.spi.component.ComponentInjector;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.server.impl.container.filter.FilterFactory;
import com.sun.jersey.server.impl.inject.ServerInjectableProviderContext;
import com.sun.jersey.server.impl.model.method.ResourceHeadWrapperMethod;
import com.sun.jersey.server.impl.model.method.ResourceHttpMethod;
import com.sun.jersey.server.impl.model.method.ResourceHttpOptionsMethod;
import com.sun.jersey.server.impl.model.method.ResourceMethod;
import com.sun.jersey.server.impl.template.ViewResourceMethod;
import com.sun.jersey.server.impl.template.ViewableRule;
import com.sun.jersey.server.impl.uri.PathPattern;
import com.sun.jersey.server.impl.uri.PathTemplate;
import com.sun.jersey.server.impl.uri.rules.CombiningMatchingPatterns;
import com.sun.jersey.server.impl.uri.rules.HttpMethodRule;
import com.sun.jersey.server.impl.uri.rules.PatternRulePair;
import com.sun.jersey.server.impl.uri.rules.RightHandPathRule;
import com.sun.jersey.server.impl.uri.rules.SequentialMatchingPatterns;
import com.sun.jersey.server.impl.uri.rules.SubLocatorRule;
import com.sun.jersey.server.impl.uri.rules.TerminatingRule;
import com.sun.jersey.server.impl.uri.rules.UriRulesFactory;
import com.sun.jersey.server.impl.wadl.WadlFactory;
import com.sun.jersey.spi.container.ResourceFilter;
import com.sun.jersey.spi.container.ResourceMethodDispatchProvider;
import com.sun.jersey.spi.inject.Errors;
import com.sun.jersey.spi.inject.Injectable;
import com.sun.jersey.spi.monitoring.DispatchingListener;
import com.sun.jersey.spi.uri.rules.UriRule;
import com.sun.jersey.spi.uri.rules.UriRules;
import javax.ws.rs.HttpMethod;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
*
* @author [email protected]
*/
public final class ResourceUriRules {
private final UriRules rules;
private final ResourceConfig resourceConfig;
private final ResourceMethodDispatchProvider dp;
private final ServerInjectableProviderContext injectableContext;
private final FilterFactory ff;
private final WadlFactory wadlFactory;
private final DispatchingListener dispatchingListener;
public ResourceUriRules(
final ResourceConfig resourceConfig,
final ResourceMethodDispatchProvider dp,
final ServerInjectableProviderContext injectableContext,
final FilterFactory ff,
final WadlFactory wadlFactory,
final DispatchingListener dispatchingListener,
final AbstractResource resource
) {
this.resourceConfig = resourceConfig;
this.dp = dp;
this.injectableContext = injectableContext;
this.ff = ff;
this.wadlFactory = wadlFactory;
this.dispatchingListener = dispatchingListener;
final boolean implicitViewables = resourceConfig.getFeature(
ResourceConfig.FEATURE_IMPLICIT_VIEWABLES);
List implictProduces = null;
if (implicitViewables) {
ImplicitProduces ip = resource.getAnnotation(ImplicitProduces.class);
if (ip != null && ip.value() != null && ip.value().length > 0) {
implictProduces = MediaTypes.createQualitySourceMediaTypes(ip.value());
}
}
RulesMap rulesMap = new RulesMap();
processSubResourceLocators(resource, rulesMap);
processSubResourceMethods(resource, implictProduces, rulesMap);
processMethods(resource, implictProduces, rulesMap);
// Check for matching conflicts with path patterns
rulesMap.processConflicts(new RulesMap.ConflictClosure() {
public void onConflict(PathPattern p1, PathPattern p2) {
Errors.error(String.format("Conflicting URI templates. "
+ "The URI templates %s and %s for sub-resource methods "
+ "and/or sub-resource locators of resource class %s "
+ "transform to the same regular expression %s",
p1.getTemplate().getTemplate(),
p2.getTemplate().getTemplate(),
resource.getResourceClass().getName(),
p1));
}
});
// Create the atomic rules, at most only one will be matched
final UriRules atomicRules = UriRulesFactory.create(rulesMap);
// Create the end sequential rules, zero or more may be matched
List> patterns = new ArrayList>();
if (resourceConfig.getFeature(ResourceConfig.FEATURE_IMPLICIT_VIEWABLES)) {
AbstractImplicitViewMethod method = new AbstractImplicitViewMethod(resource);
List resourceFilters = ff.getResourceFilters(method);
ViewableRule r = new ViewableRule(
implictProduces,
FilterFactory.getRequestFilters(resourceFilters),
FilterFactory.getResponseFilters(resourceFilters));
ComponentInjector ci = new ComponentInjector(injectableContext,
ViewableRule.class);
ci.inject(r);
// The matching rule for a sub-resource template
patterns.add(new PatternRulePair(
new UriPattern("/([^/]+)"), r));
// The matching rule for an index template
patterns.add(new PatternRulePair(
UriPattern.EMPTY, r));
}
// The terminating rule when the path is not fully consumed and accepted
patterns.add(new PatternRulePair(
new UriPattern(".*"), new TerminatingRule()));
// The terminating rule when the path is fully consumed and accepted
patterns.add(new PatternRulePair(
UriPattern.EMPTY, new TerminatingRule()));
// Create the sequential rules
final UriRules sequentialRules =
new SequentialMatchingPatterns(patterns);
// Combined the atomic and sequential rules, the former will be matched
// first
final UriRules combiningRules =
new CombiningMatchingPatterns(
Arrays.asList(atomicRules, sequentialRules));
this.rules = combiningRules;
}
public UriRules getRules() {
return rules;
}
private void processSubResourceLocators(
final AbstractResource resource,
final RulesMap rulesMap) {
for (final AbstractSubResourceLocator locator : resource.getSubResourceLocators()) {
PathPattern p = null;
try {
p = new PathPattern(new PathTemplate(locator.getPath().getValue()));
} catch (IllegalArgumentException ex) {
Errors.error(String.format("Illegal URI template for sub-resource locator %s: %s",
locator.getMethod(), ex.getMessage()));
continue;
}
final PathPattern conflict = rulesMap.hasConflict(p);
if (conflict != null) {
Errors.error(String.format("Conflicting URI templates. "
+ "The URI template %s for sub-resource locator %s "
+ "and the URI template %s transform to the same regular expression %s",
p.getTemplate().getTemplate(),
locator.getMethod(),
conflict.getTemplate().getTemplate(),
p));
continue;
}
final List is = injectableContext.getInjectable(
locator.getMethod(), locator.getParameters(), ComponentScope.PerRequest);
if (is.contains(null)) {
// Missing dependency
for (int i = 0; i < is.size(); i++) {
if (is.get(i) == null) {
Errors.missingDependency(locator.getMethod(), i);
}
}
}
final List resourceFilters = ff.getResourceFilters(locator);
final UriRule r = new SubLocatorRule(
p.getTemplate(),
is,
FilterFactory.getRequestFilters(resourceFilters),
FilterFactory.getResponseFilters(resourceFilters),
dispatchingListener,
locator);
rulesMap.put(p,
new RightHandPathRule(
resourceConfig.getFeature(ResourceConfig.FEATURE_REDIRECT),
p.getTemplate().endsWithSlash(),
r));
}
}
private void processSubResourceMethods(
final AbstractResource resource,
final List implictProduces,
final RulesMap rulesMap) {
final Map patternMethodMap =
new HashMap();
for (final AbstractSubResourceMethod method : resource.getSubResourceMethods()) {
PathPattern p;
try {
p = new PathPattern(new PathTemplate(method.getPath().getValue()), "(/)?");
} catch (IllegalArgumentException ex) {
Errors.error(String.format("Illegal URI template for sub-resource method %s: %s",
method.getMethod(), ex.getMessage()));
continue;
}
final ResourceMethod rm = new ResourceHttpMethod(dp, ff, p.getTemplate(), method);
ResourceMethodMap rmm = patternMethodMap.get(p);
if (rmm == null) {
rmm = new ResourceMethodMap();
patternMethodMap.put(p, rmm);
}
if (isValidResourceMethod(rm, rmm)) {
rmm.put(rm);
}
rmm.put(rm);
}
// Create the rules for the sub-resource HTTP methods
for (final Map.Entry e : patternMethodMap.entrySet()) {
addImplicitMethod(implictProduces, e.getValue());
final PathPattern p = e.getKey();
final ResourceMethodMap rmm = e.getValue();
processHead(rmm);
processOptions(rmm, resource, p);
rmm.sort();
rulesMap.put(p,
new RightHandPathRule(
resourceConfig.getFeature(ResourceConfig.FEATURE_REDIRECT),
p.getTemplate().endsWithSlash(),
new HttpMethodRule(rmm, true, dispatchingListener)));
}
}
private void processMethods(
final AbstractResource resource,
final List implictProduces,
final RulesMap rulesMap) {
final ResourceMethodMap rmm = new ResourceMethodMap();
for (final AbstractResourceMethod resourceMethod : resource.getResourceMethods()) {
ResourceMethod rm = new ResourceHttpMethod(dp, ff, resourceMethod);
if (isValidResourceMethod(rm, rmm)) {
rmm.put(rm);
}
}
addImplicitMethod(implictProduces, rmm);
processHead(rmm);
processOptions(rmm, resource, null);
// Create the rules for the HTTP methods
rmm.sort();
if (!rmm.isEmpty()) {
// No need to adapt with the RightHandPathRule as the URI path
// will be consumed when such a rule is accepted
rulesMap.put(PathPattern.EMPTY_PATH, new HttpMethodRule(rmm, dispatchingListener));
}
}
private void addImplicitMethod(
final List implictProduces,
final ResourceMethodMap rmm) {
if (implictProduces != null) {
final List getList = rmm.get(HttpMethod.GET);
if (getList != null && !getList.isEmpty()) {
rmm.put(new ViewResourceMethod(implictProduces));
}
}
}
private boolean isValidResourceMethod(
final ResourceMethod rm,
final ResourceMethodMap rmm) {
final List rml = rmm.get(rm.getHttpMethod());
if (rml != null) {
boolean conflict = false;
ResourceMethod erm = null;
for (int i = 0; i < rml.size() && !conflict; i++) {
erm = rml.get(i);
conflict = MediaTypes.intersects(rm.getConsumes(), erm.getConsumes())
&& MediaTypes.intersects(rm.getProduces(), erm.getProduces());
}
if (conflict) {
if (rm.getAbstractResourceMethod().hasEntity()) {
Errors.error(String.format("Consuming media type conflict. " +
"The resource methods %s and %s can consume the same media type",
rm.getAbstractResourceMethod().getMethod(), erm.getAbstractResourceMethod().getMethod()));
} else {
Errors.error(String.format("Producing media type conflict. " +
"The resource methods %s and %s can produce the same media type",
rm.getAbstractResourceMethod().getMethod(), erm.getAbstractResourceMethod().getMethod()));
}
}
if (conflict)
return false;
}
return true;
}
private void processHead(final ResourceMethodMap methodMap) {
final List getList = methodMap.get(HttpMethod.GET);
if (getList == null || getList.isEmpty()) {
return;
}
List headList = methodMap.get(HttpMethod.HEAD);
if (headList == null) {
headList = new ArrayList();
}
for (final ResourceMethod getMethod : getList) {
if (!containsMediaOfMethod(headList, getMethod)) {
final ResourceMethod headMethod = new ResourceHeadWrapperMethod(getMethod);
methodMap.put(headMethod);
headList = methodMap.get(HttpMethod.HEAD);
}
}
}
/**
* Determine if a the resource method list contains a method that
* has the same consume/produce media as another resource method.
*
* @param methods the resource methods
* @param method the resource method to check
* @return true if the list contains a method with the same media as method.
*/
private boolean containsMediaOfMethod(
final List methods,
final ResourceMethod method) {
for (final ResourceMethod m : methods) {
if (method.mediaEquals(m)) {
return true;
}
}
return false;
}
private void processOptions(
final ResourceMethodMap methodMap,
final AbstractResource resource,
final PathPattern p) {
final List l = methodMap.get("OPTIONS");
if (l != null) {
return;
}
ResourceMethod optionsMethod = wadlFactory.createWadlOptionsMethod(methodMap, resource, p);
if (optionsMethod == null) {
optionsMethod = new ResourceHttpOptionsMethod(methodMap);
}
methodMap.put(optionsMethod);
}
}
