/*
* 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.brooklyn.camp;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nullable;
import org.apache.brooklyn.camp.spi.AbstractResource;
import org.apache.brooklyn.camp.spi.ApplicationComponent;
import org.apache.brooklyn.camp.spi.ApplicationComponentTemplate;
import org.apache.brooklyn.camp.spi.Assembly;
import org.apache.brooklyn.camp.spi.AssemblyTemplate;
import org.apache.brooklyn.camp.spi.PlatformComponent;
import org.apache.brooklyn.camp.spi.PlatformComponentTemplate;
import org.apache.brooklyn.camp.spi.PlatformRootSummary;
import org.apache.brooklyn.camp.spi.PlatformTransaction;
import org.apache.brooklyn.camp.spi.collection.AggregatingResourceLookup;
import org.apache.brooklyn.camp.spi.collection.ResourceLookup;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Function;
/** A {@link CampPlatform} implementation which is empty but allows adding new items,
* as well as adding other platforms; meant for subclassing only */
public class AggregatingCampPlatform extends CampPlatform {
private static final Logger log = LoggerFactory.getLogger(AggregatingCampPlatform.class);
protected AggregatingCampPlatform(PlatformRootSummary root) {
this(root, new BasicCampPlatform(root));
}
public AggregatingCampPlatform(PlatformRootSummary root, CampPlatform platformWhereTransactionsOccur) {
super(root);
log.debug("Creating {} with main platform: {}", this, platformWhereTransactionsOccur);
this.mainPlatform = platformWhereTransactionsOccur;
}
/** platform where additions are made */
CampPlatform mainPlatform;
List<CampPlatform> otherPlatformsToSearch = new ArrayList<CampPlatform>();
protected void addPlatform(CampPlatform platform) {
log.debug("Adding child platform to {}: {}", this, platform);
otherPlatformsToSearch.add(platform);
}
protected <T extends AbstractResource> ResourceLookup<T> aggregatingLookup(Function<CampPlatform, ResourceLookup<T>> lookupFunction) {
List<ResourceLookup<T>> lookups = new ArrayList<ResourceLookup<T>>();
lookups.add(lookupFunction.apply(mainPlatform));
for (CampPlatform p: otherPlatformsToSearch)
lookups.add(lookupFunction.apply(p));
return AggregatingResourceLookup.of(lookups);
}
public ResourceLookup<PlatformComponentTemplate> platformComponentTemplates() {
return aggregatingLookup(new Function<CampPlatform, ResourceLookup<PlatformComponentTemplate>>() {
public ResourceLookup<PlatformComponentTemplate> apply(@Nullable CampPlatform input) {
return input.platformComponentTemplates();
}
});
}
@Override
public ResourceLookup<ApplicationComponentTemplate> applicationComponentTemplates() {
return aggregatingLookup(new Function<CampPlatform, ResourceLookup<ApplicationComponentTemplate>>() {
public ResourceLookup<ApplicationComponentTemplate> apply(@Nullable CampPlatform input) {
return input.applicationComponentTemplates();
}
});
}
public ResourceLookup<AssemblyTemplate> assemblyTemplates() {
return aggregatingLookup(new Function<CampPlatform, ResourceLookup<AssemblyTemplate>>() {
public ResourceLookup<AssemblyTemplate> apply(@Nullable CampPlatform input) {
return input.assemblyTemplates();
}
});
}
public ResourceLookup<PlatformComponent> platformComponents() {
return aggregatingLookup(new Function<CampPlatform, ResourceLookup<PlatformComponent>>() {
public ResourceLookup<PlatformComponent> apply(@Nullable CampPlatform input) {
return input.platformComponents();
}
});
}
@Override
public ResourceLookup<ApplicationComponent> applicationComponents() {
return aggregatingLookup(new Function<CampPlatform, ResourceLookup<ApplicationComponent>>() {
public ResourceLookup<ApplicationComponent> apply(@Nullable CampPlatform input) {
return input.applicationComponents();
}
});
}
public ResourceLookup<Assembly> assemblies() {
return aggregatingLookup(new Function<CampPlatform, ResourceLookup<Assembly>>() {
public ResourceLookup<Assembly> apply(@Nullable CampPlatform input) {
return input.assemblies();
}
});
}
@Override
public PlatformTransaction transaction() {
return mainPlatform.transaction();
}
}