package com.cognifide.slice.core.internal.injector;
//@formatter:off
/*
* #%L
* Slice - Core API
* $Id:$
* $HeadURL:$
* %%
* Copyright (C) 2012 Cognifide Limited
* %%
* Licensed 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.
* #L%
*/
//@formatter:on
import java.util.Collection;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.resource.LoginException;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceResolverFactory;
import org.osgi.framework.Constants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.cognifide.slice.api.injector.InjectorConfig;
import com.cognifide.slice.api.injector.InjectorWithContext;
import com.cognifide.slice.api.injector.InjectorsRepository;
import com.cognifide.slice.util.InjectorNameUtil;
import com.google.inject.Injector;
/**
* @author Witold Szczerba
* @author Rafał Malinowski
* @author Jan Kuźniak
* @class InjectorsRepositoryService
*/
@Component(immediate = true)
@Service
// @formatter:off
@Properties({
@Property(name = Constants.SERVICE_DESCRIPTION, value = "Repository of all Slice injectors."),
@Property(name = Constants.SERVICE_VENDOR, value = "Cognifide")
})
// @formatter:on
public final class InjectorsRepositoryService implements InjectorsRepository {
private static final Logger LOG = LoggerFactory.getLogger(InjectorsRepositoryService.class);
@Reference
private ResourceResolverFactory resourceResolverFactory;
@Reference(cardinality = ReferenceCardinality.OPTIONAL_MULTIPLE, referenceInterface = InjectorConfig.class, //
policy = ReferencePolicy.DYNAMIC)
private final InjectorHierarchy injectors = new InjectorHierarchy();
@Override
public InjectorWithContext getInjector(final String injectorName) {
InjectorWithContextImpl injectorWithContext = null;
Injector injector = injectors.getInjectorByName(injectorName);
if (injector != null) {
injectorWithContext = new InjectorWithContextImpl(injector);
}
return injectorWithContext;
}
@Override
public InjectorWithContext getInjectorForResource(Resource resource) {
String injectorName = InjectorNameUtil.getForResource(resource);
return getInjector(injectorName);
}
@Override
public InjectorWithContext getInjectorForResource(String resourcePath) {
InjectorWithContext injector = null;
try {
injector = getInjectorForResourceAsAdmin(resourcePath);
} catch (LoginException e) {
// yikes! I can no longer login to repostiory with "null" credentials!
LOG.error("Unexpected: could not access administrative resource resolver");
}
return injector;
}
@Override
public String getInjectorName(Injector injector) {
return injectors.getRegisteredName(injector);
}
@Override
public Collection<String> getInjectorNames() {
return injectors.getInjectorNames();
}
private InjectorWithContext getInjectorForResourceAsAdmin(String resourcePath) throws LoginException {
ResourceResolver resourceResolver = resourceResolverFactory.getAdministrativeResourceResolver(null);
Resource resource = resourceResolver.getResource(resourcePath);
InjectorWithContext injector = getInjectorForResource(resource);
resourceResolver.close();
return injector;
}
protected void bindInjectors(final InjectorConfig config) {
injectors.registerInjector(config);
}
protected void unbindInjectors(final InjectorConfig config) {
injectors.unregisterInjector(config);
}
}