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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.cxf.ws.policy;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.ResourceBundle;
import org.w3c.dom.Element;
import org.apache.cxf.Bus;
import org.apache.cxf.common.i18n.BundleUtils;
import org.apache.cxf.common.i18n.Message;
import org.apache.cxf.common.injection.NoJSR250Annotations;
import org.apache.cxf.configuration.ConfiguredBeanLocator;
import org.apache.cxf.endpoint.Client;
import org.apache.cxf.endpoint.Endpoint;
import org.apache.cxf.endpoint.Server;
import org.apache.cxf.feature.AbstractFeature;
import org.apache.cxf.service.model.DescriptionInfo;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.ws.policy.attachment.external.ExternalAttachmentProvider;
import org.apache.cxf.ws.policy.attachment.reference.ReferenceResolver;
import org.apache.cxf.ws.policy.attachment.reference.RemoteReferenceResolver;
import org.apache.neethi.Policy;
import org.apache.neethi.PolicyReference;
import org.apache.neethi.PolicyRegistry;
/**
* Configures a Server, Client, Bus with the specified policies. If a series of
* Policy Elements are supplied, these will be loaded into a Policy
* class using the PolicyBuilder extension on the bus. If the
* PolicyEngine has not been started, this feature will start it.
*
* @see PolicyBuilder
* @see AbstractFeature
*/
@NoJSR250Annotations
public class WSPolicyFeature extends AbstractFeature {
private static final ResourceBundle BUNDLE = BundleUtils.getBundle(WSPolicyFeature.class);
private Collection policies;
private Collection policyElements;
private Collection policyReferenceElements;
private boolean ignoreUnknownAssertions;
private AlternativeSelector alternativeSelector;
private boolean enabled = true;
public WSPolicyFeature() {
super();
}
public WSPolicyFeature(Policy... ps) {
super();
policies = new ArrayList();
Collections.addAll(policies, ps);
}
public boolean isEnabled() {
return enabled;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
@Override
public void initialize(Bus bus) {
// this should never be null as features are initialised only
// after the bus and all its extensions have been created
PolicyEngine pe = bus.getExtension(PolicyEngine.class);
synchronized (pe) {
pe.setEnabled(enabled);
pe.setIgnoreUnknownAssertions(ignoreUnknownAssertions);
if (null != alternativeSelector) {
pe.setAlternativeSelector(alternativeSelector);
}
}
}
@Override
public void initialize(Client client, Bus bus) {
Endpoint endpoint = client.getEndpoint();
Policy p = initializeEndpointPolicy(endpoint, bus);
PolicyEngine pe = bus.getExtension(PolicyEngine.class);
EndpointInfo ei = endpoint.getEndpointInfo();
EndpointPolicy ep = pe.getClientEndpointPolicy(ei, null);
pe.setClientEndpointPolicy(ei, ep.updatePolicy(p));
}
@Override
public void initialize(Server server, Bus bus) {
Endpoint endpoint = server.getEndpoint();
Policy p = initializeEndpointPolicy(endpoint, bus);
PolicyEngine pe = bus.getExtension(PolicyEngine.class);
EndpointInfo ei = endpoint.getEndpointInfo();
EndpointPolicy ep = pe.getServerEndpointPolicy(ei, null);
pe.setServerEndpointPolicy(ei, ep.updatePolicy(p));
// Add policy to the service model (and consequently to the WSDL)
// FIXME - ideally this should probably be moved up to where the policies are applied to the
// endpoint, rather than this late. As a consequence of its location, you have to declare a
// ws policy feature on every endpoint in order to get any policy attachments into the
// wsdl. Alternatively add to the WSDLServiceBuilder somehow.
ServiceModelPolicyUpdater pu = new ServiceModelPolicyUpdater(ei);
for (PolicyProvider pp : ((PolicyEngineImpl) pe).getPolicyProviders()) {
if (pp instanceof ExternalAttachmentProvider) {
pu.addPolicyAttachments(((ExternalAttachmentProvider) pp).getAttachments());
}
}
}
private Policy initializeEndpointPolicy(Endpoint endpoint, Bus bus) {
initialize(bus);
DescriptionInfo i = endpoint.getEndpointInfo().getDescription();
Collection loadedPolicies = null;
if (policyElements != null || policyReferenceElements != null) {
loadedPolicies = new ArrayList();
PolicyBuilder builder = bus.getExtension(PolicyBuilder.class);
if (null != policyElements) {
for (Element e : policyElements) {
loadedPolicies.add(builder.getPolicy(e));
}
}
if (null != policyReferenceElements) {
for (Element e : policyReferenceElements) {
PolicyReference pr = builder.getPolicyReference(e);
Policy resolved = resolveReference(pr, builder, bus, i);
if (null != resolved) {
loadedPolicies.add(resolved);
}
}
}
}
Policy thePolicy = new Policy();
if (policies != null) {
for (Policy p : policies) {
thePolicy = thePolicy.merge(p);
}
}
if (loadedPolicies != null) {
for (Policy p : loadedPolicies) {
thePolicy = thePolicy.merge(p);
}
}
return thePolicy;
}
public Collection getPolicies() {
if (policies == null) {
policies = new ArrayList();
}
return policies;
}
public void setPolicies(Collection policies) {
this.policies = policies;
}
public Collection getPolicyElements() {
if (policyElements == null) {
policyElements = new ArrayList();
}
return policyElements;
}
public void setPolicyElements(Collection elements) {
policyElements = elements;
}
public Collection getPolicyReferenceElements() {
if (policyReferenceElements == null) {
policyReferenceElements = new ArrayList();
}
return policyReferenceElements;
}
public void setPolicyReferenceElements(Collection elements) {
policyReferenceElements = elements;
}
public void setIgnoreUnknownAssertions(boolean ignore) {
ignoreUnknownAssertions = ignore;
}
public void setAlternativeSelector(AlternativeSelector as) {
alternativeSelector = as;
}
Policy resolveReference(PolicyReference ref, PolicyBuilder builder, Bus bus, DescriptionInfo i) {
Policy p = null;
if (!ref.getURI().startsWith("#")) {
String base = i == null ? null : i.getBaseURI();
p = resolveExternal(ref, base, bus);
} else {
p = resolveLocal(ref, bus, i);
}
if (null == p) {
throw new PolicyException(new Message("UNRESOLVED_POLICY_REFERENCE_EXC", BUNDLE, ref.getURI()));
}
return p;
}
Policy resolveLocal(PolicyReference ref, final Bus bus, DescriptionInfo i) {
String uri = ref.getURI().substring(1);
String absoluteURI = i == null ? uri : i.getBaseURI() + uri;
PolicyRegistry registry = bus.getExtension(PolicyEngine.class).getRegistry();
Policy resolved = registry.lookup(absoluteURI);
if (null != resolved) {
return resolved;
}
ReferenceResolver resolver = new ReferenceResolver() {
public Policy resolveReference(String uri) {
PolicyBean pb = bus.getExtension(ConfiguredBeanLocator.class)
.getBeanOfType(uri, PolicyBean.class);
if (null != pb) {
PolicyBuilder builder = bus.getExtension(PolicyBuilder.class);
return builder.getPolicy(pb.getElement());
}
return null;
}
};
resolved = resolver.resolveReference(uri);
if (null != resolved) {
ref.setURI(absoluteURI);
registry.register(absoluteURI, resolved);
}
return resolved;
}
protected Policy resolveExternal(PolicyReference ref, String baseURI, Bus bus) {
PolicyBuilder builder = bus.getExtension(PolicyBuilder.class);
ReferenceResolver resolver = new RemoteReferenceResolver(baseURI, builder);
PolicyRegistry registry = bus.getExtension(PolicyEngine.class).getRegistry();
Policy resolved = registry.lookup(ref.getURI());
if (null != resolved) {
return resolved;
}
return resolver.resolveReference(ref.getURI());
}
}
