/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates.
*
* 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.
*/
package org.jbpm.casemgmt.impl.event;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.jbpm.casemgmt.api.event.CaseEventListener;
import org.jbpm.casemgmt.impl.audit.CaseInstanceAuditEventListener;
import org.jbpm.runtime.manager.impl.PerCaseRuntimeManager;
import org.jbpm.runtime.manager.impl.SimpleRuntimeEnvironment;
import org.jbpm.services.api.DeploymentEvent;
import org.jbpm.services.api.DeploymentEventListener;
import org.jbpm.shared.services.impl.TransactionalCommandService;
import org.kie.internal.identity.IdentityProvider;
import org.kie.internal.runtime.Cacheable;
import org.kie.internal.runtime.Closeable;
import org.kie.internal.runtime.conf.DeploymentDescriptor;
import org.kie.internal.runtime.conf.ObjectModel;
import org.kie.internal.runtime.conf.ObjectModelResolver;
import org.kie.internal.runtime.conf.ObjectModelResolverProvider;
import org.kie.internal.runtime.manager.InternalRuntimeManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Configuration listener that must be attached to DeploymentService so it can react
* to deployed units so it can register case event listeners per deployment unit.
*
*/
public class CaseConfigurationDeploymentListener implements DeploymentEventListener {
private static final Logger logger = LoggerFactory.getLogger(CaseConfigurationDeploymentListener.class);
private IdentityProvider identityProvider;
public CaseConfigurationDeploymentListener(IdentityProvider identityProvider) {
this.identityProvider = identityProvider;
}
@Override
public void onDeploy(DeploymentEvent event) {
InternalRuntimeManager runtimeManager = (InternalRuntimeManager) event.getDeployedUnit().getRuntimeManager();
if (runtimeManager instanceof PerCaseRuntimeManager) {
List<CaseEventListener> caseEventListeners = getEventListenerFromDescriptor(runtimeManager);
logger.debug("Adding following case event listeners {} for deployment {}", caseEventListeners, event.getDeploymentId());
CaseInstanceAuditEventListener auditEventListener = new CaseInstanceAuditEventListener(new TransactionalCommandService(((SimpleRuntimeEnvironment) runtimeManager.getEnvironment()).getEmf()));
caseEventListeners.add(auditEventListener);
CaseEventSupport caseEventSupport = new CaseEventSupport(identityProvider, caseEventListeners);
((PerCaseRuntimeManager) runtimeManager).setCaseEventSupport(caseEventSupport);
logger.debug("CaseEventSupport configured for deployment {}", event.getDeploymentId());
}
}
@Override
public void onUnDeploy(DeploymentEvent event) {
InternalRuntimeManager runtimeManager = (InternalRuntimeManager) event.getDeployedUnit().getRuntimeManager();
if (runtimeManager instanceof PerCaseRuntimeManager) {
CaseEventSupport caseEventSupport = (CaseEventSupport) ((PerCaseRuntimeManager) runtimeManager).getCaseEventSupport();
if (caseEventSupport != null) {
caseEventSupport.reset();
logger.debug("CaseEventSupport disposed for deployment {}", event.getDeploymentId());
}
}
}
@Override
public void onActivate(DeploymentEvent event) {
// no-op
}
@Override
public void onDeactivate(DeploymentEvent event) {
// no-op
}
protected List<CaseEventListener> getEventListenerFromDescriptor(InternalRuntimeManager runtimeManager) {
List<CaseEventListener> listeners = new ArrayList<CaseEventListener>();
DeploymentDescriptor descriptor = runtimeManager.getDeploymentDescriptor();
if (descriptor != null) {
Map<String, Object> params = getParametersMap(runtimeManager);
for (ObjectModel model : descriptor.getEventListeners()) {
ObjectModelResolver resolver = ObjectModelResolverProvider.get(model.getResolver());
if (resolver == null) {
logger.warn("Unable to find ObjectModelResolver for {}", model.getResolver());
continue;
}
try {
Object listenerInstance = resolver.getInstance(model, runtimeManager.getEnvironment().getClassLoader(), params);
if (listenerInstance != null && CaseEventListener.class.isAssignableFrom(listenerInstance.getClass())) {
listeners.add((CaseEventListener) listenerInstance);
} else {
// close/cleanup instance as it is not going to be used at the moment, except these that are cacheable
if (listenerInstance instanceof Closeable && !(listenerInstance instanceof Cacheable)) {
((Closeable) listenerInstance).close();
}
}
} catch (Exception e) {
logger.debug("Unable to build listener {}", model);
}
}
}
return listeners;
}
protected Map<String, Object> getParametersMap(InternalRuntimeManager runtimeManager) {
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put("runtimeManager", runtimeManager);
parameters.put("classLoader", runtimeManager.getEnvironment().getClassLoader());
parameters.put("entityManagerFactory", ((SimpleRuntimeEnvironment)runtimeManager.getEnvironment()).getEmf());
parameters.put("kieContainer", runtimeManager.getKieContainer());
return parameters;
}
}