| /* |
| * 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.brooklyn.spi.creation; |
| |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.brooklyn.api.entity.Application; |
| import org.apache.brooklyn.api.entity.EntitySpec; |
| import org.apache.brooklyn.api.mgmt.ManagementContext; |
| import org.apache.brooklyn.api.mgmt.classloading.BrooklynClassLoadingContext; |
| import org.apache.brooklyn.camp.CampPlatform; |
| import org.apache.brooklyn.camp.brooklyn.api.AssemblyTemplateSpecInstantiator; |
| import org.apache.brooklyn.camp.spi.Assembly; |
| import org.apache.brooklyn.camp.spi.AssemblyTemplate; |
| import org.apache.brooklyn.camp.spi.PlatformComponentTemplate; |
| import org.apache.brooklyn.camp.spi.collection.ResolvableLink; |
| import org.apache.brooklyn.core.mgmt.EntityManagementUtils; |
| import org.apache.brooklyn.core.mgmt.EntityManagementUtils.CreationResult; |
| import org.apache.brooklyn.core.mgmt.HasBrooklynManagementContext; |
| import org.apache.brooklyn.core.mgmt.classloading.JavaBrooklynClassLoadingContext; |
| import org.apache.brooklyn.util.collections.MutableSet; |
| import org.apache.brooklyn.util.core.flags.TypeCoercions; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.Lists; |
| |
| public class BrooklynAssemblyTemplateInstantiator implements AssemblyTemplateSpecInstantiator { |
| |
| private static final Logger log = LoggerFactory.getLogger(BrooklynAssemblyTemplateInstantiator.class); |
| |
| public static final String NEVER_UNWRAP_APPS_PROPERTY = "wrappedApp"; |
| |
| @Override |
| public Assembly instantiate(AssemblyTemplate template, CampPlatform platform) { |
| Application app = create(template, platform); |
| CreationResult<Application, Void> start = EntityManagementUtils.start(app); |
| log.debug("CAMP created "+app+"; starting in "+start.task()); |
| return platform.assemblies().get(app.getApplicationId()); |
| } |
| |
| private Application create(AssemblyTemplate template, CampPlatform platform) { |
| ManagementContext mgmt = getManagementContext(platform); |
| BrooklynClassLoadingContext loader = JavaBrooklynClassLoadingContext.create(mgmt); |
| EntitySpec<? extends Application> spec = createApplicationSpec(template, platform, loader, MutableSet.<String>of()); |
| Application instance = mgmt.getEntityManager().createEntity(spec); |
| log.info("CAMP created '{}'", instance); |
| return instance; |
| } |
| |
| @Override |
| public List<EntitySpec<?>> createServiceSpecs( |
| AssemblyTemplate template, |
| CampPlatform platform, BrooklynClassLoadingContext itemLoader, |
| Set<String> encounteredRegisteredTypeIds) { |
| return buildTemplateServicesAsSpecs(itemLoader, template, platform, encounteredRegisteredTypeIds); |
| } |
| |
| @Override |
| public EntitySpec<? extends Application> createApplicationSpec( |
| AssemblyTemplate template, |
| CampPlatform platform, |
| BrooklynClassLoadingContext loader, |
| Set<String> encounteredTypeSymbolicNames) { |
| log.debug("CAMP creating application instance for {} ({})", template.getId(), template); |
| |
| // AssemblyTemplates created via PDP, _specifying_ then entities to put in |
| |
| EntitySpec<? extends Application> app = CampInternalUtils.createWrapperApp(template, loader); |
| app.configure(EntityManagementUtils.WRAPPER_APP_MARKER, Boolean.TRUE); |
| |
| // first build the children into an empty shell app |
| List<EntitySpec<?>> childSpecs = createServiceSpecs(template, platform, loader, encounteredTypeSymbolicNames); |
| for (EntitySpec<?> childSpec : childSpecs) { |
| // children get parsed and unwrapped irrespective of the NEVER_UNWRAP_APPS setting; |
| // we could support a NEVER_UNWRAP_NESTED_ENTITIES item but i don't know if there's a use case |
| app.child(EntityManagementUtils.unwrapEntity(childSpec)); |
| } |
| |
| if (allowedToUnwrap(template, app)) { |
| app = EntityManagementUtils.unwrapApplication(app); |
| } |
| |
| return app; |
| } |
| |
| private boolean allowedToUnwrap(AssemblyTemplate template, EntitySpec<? extends Application> app) { |
| return !(Boolean.TRUE.equals(TypeCoercions.coerce(template.getCustomAttributes().get(NEVER_UNWRAP_APPS_PROPERTY), Boolean.class))); |
| } |
| |
| private List<EntitySpec<?>> buildTemplateServicesAsSpecs(BrooklynClassLoadingContext loader, AssemblyTemplate template, CampPlatform platform, Set<String> encounteredRegisteredTypeIds) { |
| List<EntitySpec<?>> result = Lists.newArrayList(); |
| |
| for (ResolvableLink<PlatformComponentTemplate> ctl: template.getPlatformComponentTemplates().links()) { |
| PlatformComponentTemplate appChildComponentTemplate = ctl.resolve(); |
| BrooklynComponentTemplateResolver entityResolver = BrooklynComponentTemplateResolver.Factory.newInstance(loader, appChildComponentTemplate); |
| EntitySpec<?> spec = entityResolver.resolveSpec(encounteredRegisteredTypeIds); |
| result.add(spec); |
| } |
| return result; |
| } |
| |
| private static ManagementContext getManagementContext(CampPlatform platform) { |
| return ((HasBrooklynManagementContext)platform).getBrooklynManagementContext(); |
| } |
| |
| } |