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/*******************************************************************************
* Copyright (c) 2009 EclipseSource and others. All rights reserved. This
* program and the accompanying materials are made available under the terms of
* the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* EclipseSource - initial API and implementation
******************************************************************************/
package org.eclipse.ecf.osgi.services.distribution;
import java.util.*;
import org.eclipse.ecf.core.ContainerTypeDescription;
import org.eclipse.ecf.core.IContainer;
import org.eclipse.ecf.core.identity.ID;
import org.eclipse.ecf.internal.osgi.services.distribution.Activator;
import org.eclipse.ecf.remoteservice.*;
import org.osgi.framework.ServiceReference;
/**
* Default implementation of IHostContainerFinder.
*
*/
public class DefaultHostContainerFinder extends AbstractContainerFinder
implements IHostContainerFinder {
public IRemoteServiceContainer[] findHostContainers(
ServiceReference serviceReference, String[] remoteInterfaces,
String[] remoteConfigurationType, String[] remoteRequiresIntents) {
Collection rsContainers = findRemoteContainersSatisfyingRequiredIntents(remoteRequiresIntents);
List results = new ArrayList();
for (Iterator i = rsContainers.iterator(); i.hasNext();) {
IRemoteServiceContainer rsContainer = (IRemoteServiceContainer) i
.next();
if (includeContainer(serviceReference, rsContainer))
results.add(rsContainer);
}
return (IRemoteServiceContainer[]) results
.toArray(new IRemoteServiceContainer[] {});
}
protected Collection findRemoteContainersSatisfyingRequiredIntents(
String[] remoteRequiresIntents) {
List results = new ArrayList();
IContainer[] containers = Activator.getDefault().getContainerManager()
.getAllContainers();
if (containers == null || containers.length == 0)
return null;
for (int i = 0; i < containers.length; i++) {
// Check to make sure it's a rs container adapter. If it's not go
// onto next one
IRemoteServiceContainerAdapter adapter = (IRemoteServiceContainerAdapter) containers[i]
.getAdapter(IRemoteServiceContainerAdapter.class);
if (adapter == null)
continue;
// Get container type description and intents
ContainerTypeDescription description = Activator.getDefault()
.getContainerManager().getContainerTypeDescription(
containers[i].getID());
// If it has no description continue
if (description == null)
continue;
List supportedIntents = Arrays.asList(description
.getSupportedIntents());
boolean hasIntents = true;
if (remoteRequiresIntents != null) {
for (int j = 0; j < remoteRequiresIntents.length; j++) {
if (!supportedIntents.contains(remoteRequiresIntents[j]))
hasIntents = false;
}
}
if (hasIntents) {
trace("findRemoteContainersSatisfyingRequiredIntents",
"include containerID=" + containers[i].getID());
results.add(new RemoteServiceContainer(containers[i], adapter));
} else {
trace("findRemoteContainersSatisfyingRequiredIntents",
"exclude containerID=" + containers[i].getID()
+ " supported intents=" + supportedIntents);
}
}
return results;
}
protected boolean includeContainer(ServiceReference serviceReference,
IRemoteServiceContainer rsContainer) {
IContainer container = rsContainer.getContainer();
Object cID = serviceReference
.getProperty(org.eclipse.ecf.remoteservice.Constants.SERVICE_CONTAINER_ID);
// If the SERVICE_CONTAINER_ID property is not set, then we'll include
// it by default
if (cID == null || !(cID instanceof ID)) {
trace(
"includeContainer",
"serviceReference="
+ serviceReference
+ " does not set remote service container id service property. INCLUDING containerID="
+ container.getID() + " in remote registration");
return true;
}
// Or if the id is specified and it's the same as the containerID under
// consideration
// then it's included
ID containerID = (ID) cID;
if (container.getID().equals(containerID)) {
trace("includeContainer", "serviceReference=" + serviceReference
+ " has MATCHING container id=" + containerID
+ ". INCLUDING rsca=" + container.getID()
+ " in remote registration");
return true;
}
trace("includeContainer", "serviceReference=" + serviceReference
+ " has non-matching id=" + containerID + ". EXCLUDING id="
+ container.getID() + " in remote registration");
return false;
}
}
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