use of org.apache.felix.ipojo.HandlerManager in project felix by apache.
the class ProvidedServiceHandler method checkRequirement.
/**
* Check the correctness of the composite requirement against the service level dependency.
* @param imp : requirement to check
* @param elem : service-level dependency metadata
* @throws CompositionException : occurs if the requirement does not match with service-level specification requirement
*/
private void checkRequirement(ServiceImporter imp, Element elem) throws CompositionException {
String optional = elem.getAttribute("optional");
boolean opt = optional != null && optional.equalsIgnoreCase("true");
String aggregate = elem.getAttribute("aggregate");
boolean agg = aggregate != null && aggregate.equalsIgnoreCase("true");
if (imp == null) {
// Add the missing requirement
ServiceDependencyHandler handler = (ServiceDependencyHandler) getHandler(HandlerFactory.IPOJO_NAMESPACE + ":subservice");
if (handler == null) {
// Look for the ServiceDependencyHandler factory
HandlerManager handlerManager = null;
try {
ServiceReference[] refs = m_context.getServiceReferences(Factory.class.getName(), "(&(handler.name=subservice)(handler.namespace=" + HandlerFactory.IPOJO_NAMESPACE + ")(handler.type=composite))");
Factory factory = (Factory) m_context.getService(refs[0]);
handlerManager = (HandlerManager) factory.createComponentInstance(null, getCompositeManager().getServiceContext());
} catch (InvalidSyntaxException e) {
// Should not happen
} catch (UnacceptableConfiguration e) {
// Should not happen
} catch (MissingHandlerException e) {
// Should not happen
} catch (ConfigurationException e) {
// Should not happen
}
// Add the required handler
try {
handlerManager.init(getCompositeManager(), new Element("composite", ""), new Properties());
} catch (ConfigurationException e) {
error("Internal error : cannot configure the Import Handler : " + e.getMessage());
throw new CompositionException("Internal error : cannot configure the Import Handler", e);
}
handler = (ServiceDependencyHandler) handlerManager.getHandler();
getCompositeManager().addCompositeHandler(handlerManager);
}
String spec = elem.getAttribute("specification");
// Cannot import yourself
String filter = "(&(objectClass=" + spec + ")(!(instance.name=" + getCompositeManager().getInstanceName() + ")))";
String givenFilter = elem.getAttribute("filter");
if (givenFilter != null) {
// NOPMD
filter = "(&" + filter + givenFilter + ")";
}
BundleContext context = new PolicyServiceContext(getCompositeManager().getGlobalContext(), getCompositeManager().getParentServiceContext(), PolicyServiceContext.GLOBAL);
Filter fil = null;
try {
fil = getCompositeManager().getGlobalContext().createFilter(filter);
} catch (InvalidSyntaxException e) {
throw new CompositionException("A required filter " + filter + " is malformed", e);
}
Class specToImport = null;
try {
specToImport = getCompositeManager().getGlobalContext().getBundle().loadClass(spec);
} catch (ClassNotFoundException e) {
throw new CompositionException("A required specification cannot be loaded : " + spec, e);
}
ServiceImporter importer = new ServiceImporter(specToImport, fil, agg, opt, null, DependencyModel.DYNAMIC_BINDING_POLICY, context, null, handler);
handler.getRequirements().add(importer);
SpecificationMetadata specMeta = new SpecificationMetadata(spec, m_context, agg, opt, this);
// Update the available types
m_services.add(specMeta);
return;
}
if (imp.isAggregate() && !agg) {
error("[" + getCompositeManager().getInstanceName() + "] The requirement " + elem.getAttribute("specification") + " is aggregate in the implementation and is declared as a simple service-level requirement");
throw new CompositionException("The requirement " + elem.getAttribute("specification") + " is aggregate in the implementation and is declared as a simple service-level requirement");
}
String filter = elem.getAttribute("filter");
if (filter != null) {
String filter2 = imp.getFilter();
if (filter2 == null || !filter2.equalsIgnoreCase(filter)) {
error("[" + getCompositeManager().getInstanceName() + "] The specification requirement " + elem.getAttribute("specification") + " as not the same filter as declared in the service-level requirement");
throw new CompositionException("The specification requirement " + elem.getAttribute("specification") + " as not the same filter as declared in the service-level requirement");
}
}
}
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