package org.drools.persistence.infinispan.processinstance;
import org.drools.core.WorkItemHandlerNotFoundException;
import org.drools.core.common.InternalKnowledgeRuntime;
import org.drools.core.impl.InternalKnowledgeBase;
import org.drools.core.process.instance.WorkItem;
import org.drools.core.process.instance.WorkItemManager;
import org.drools.core.process.instance.impl.WorkItemImpl;
import org.drools.persistence.PersistenceContext;
import org.drools.persistence.PersistenceContextManager;
import org.drools.persistence.info.WorkItemInfo;
import org.drools.persistence.jpa.processinstance.JPAWorkItemManager;
import org.kie.api.runtime.Environment;
import org.kie.api.runtime.EnvironmentName;
import org.kie.api.runtime.process.ProcessInstance;
import org.kie.api.runtime.process.WorkItemHandler;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public class InfinispanWorkItemManager extends JPAWorkItemManager implements WorkItemManager {
private InternalKnowledgeRuntime kruntime;
private Map<String, WorkItemHandler> workItemHandlers = new HashMap<String, WorkItemHandler>();
public InfinispanWorkItemManager(InternalKnowledgeRuntime kruntime) {
super(kruntime);
this.kruntime = kruntime;
}
@Override
public void internalExecuteWorkItem(WorkItem workItem) {
Environment env = this.kruntime.getEnvironment();
// EntityManager em = (EntityManager) env.get(EnvironmentName.CMD_SCOPED_ENTITY_MANAGER);
WorkItemInfo workItemInfo = new WorkItemInfo(workItem, env);
// em.persist(workItemInfo);
PersistenceContext context = ((PersistenceContextManager) env.get( EnvironmentName.PERSISTENCE_CONTEXT_MANAGER )).getCommandScopedPersistenceContext();
context.persist( workItemInfo );
((WorkItemImpl) workItem).setId(workItemInfo.getId());
workItemInfo.transform();
context.merge(workItemInfo);
WorkItemHandler handler = (WorkItemHandler) this.workItemHandlers.get(workItem.getName());
if (handler != null) {
handler.executeWorkItem(workItem, this);
workItemInfo.transform();
context.merge(workItemInfo);
} else {
throwWorkItemNotFoundException( workItem );
}
}
private void throwWorkItemNotFoundException(WorkItem workItem) {
throw new WorkItemHandlerNotFoundException( "Could not find work item handler for " + workItem.getName(),
workItem.getName() );
}
@Override
public WorkItemHandler getWorkItemHandler(String name) {
return this.workItemHandlers.get(name);
}
@Override
public void retryWorkItem(long workItemId) {
WorkItem workItem = getWorkItem(workItemId);
if (workItem != null) {
WorkItemHandler handler = (WorkItemHandler) this.workItemHandlers.get(workItem.getName());
if (handler != null) {
handler.executeWorkItem(workItem, this);
} else {
throwWorkItemNotFoundException( workItem );
}
}
}
@Override
public void internalAbortWorkItem(long id) {
Environment env = this.kruntime.getEnvironment();
//EntityManager em = (EntityManager) env.get(EnvironmentName.CMD_SCOPED_ENTITY_MANAGER);
PersistenceContext context = ((PersistenceContextManager) env.get( EnvironmentName.PERSISTENCE_CONTEXT_MANAGER )).getCommandScopedPersistenceContext();
WorkItemInfo workItemInfo = context.findWorkItemInfo( id );
// work item may have been aborted
if (workItemInfo != null) {
WorkItemImpl workItem = (WorkItemImpl) internalGetWorkItem(workItemInfo);
WorkItemHandler handler = (WorkItemHandler) this.workItemHandlers.get(workItem.getName());
if (handler != null) {
handler.abortWorkItem(workItem, this);
} else {
throwWorkItemNotFoundException( workItem );
}
context.remove(workItemInfo);
}
}
@Override
public void internalAddWorkItem(WorkItem workItem) {
}
@Override
public void completeWorkItem(long id, Map<String, Object> results) {
Environment env = this.kruntime.getEnvironment();
// EntityManager em = (EntityManager) env.get(EnvironmentName.CMD_SCOPED_ENTITY_MANAGER);
PersistenceContext context = ((PersistenceContextManager) env.get( EnvironmentName.PERSISTENCE_CONTEXT_MANAGER )).getCommandScopedPersistenceContext();
WorkItemInfo workItemInfo = context.findWorkItemInfo( id );
// work item may have been aborted
if (workItemInfo != null) {
WorkItem workItem = internalGetWorkItem(workItemInfo);
workItem.setResults(results);
ProcessInstance processInstance = kruntime.getProcessInstance(workItem.getProcessInstanceId());
workItem.setState(WorkItem.COMPLETED);
// process instance may have finished already
if (processInstance != null) {
processInstance.signalEvent("workItemCompleted", workItem);
}
context.remove(workItemInfo);
}
}
@Override
public void abortWorkItem(long id) {
Environment env = this.kruntime.getEnvironment();
// EntityManager em = (EntityManager) env.get(EnvironmentName.CMD_SCOPED_ENTITY_MANAGER);
PersistenceContext context = ((PersistenceContextManager) env.get( EnvironmentName.PERSISTENCE_CONTEXT_MANAGER )).getCommandScopedPersistenceContext();
WorkItemInfo workItemInfo = context.findWorkItemInfo( id );
// work item may have been aborted
if (workItemInfo != null) {
WorkItem workItem = (WorkItemImpl) internalGetWorkItem(workItemInfo);
ProcessInstance processInstance = kruntime.getProcessInstance(workItem.getProcessInstanceId());
workItem.setState(WorkItem.ABORTED);
// process instance may have finished already
if (processInstance != null) {
processInstance.signalEvent("workItemAborted", workItem);
}
context.remove(workItemInfo);
}
}
@Override
public WorkItem getWorkItem(long id) {
Environment env = this.kruntime.getEnvironment();
// EntityManager em = (EntityManager) env.get(EnvironmentName.CMD_SCOPED_ENTITY_MANAGER);
PersistenceContext context = ((PersistenceContextManager) env.get( EnvironmentName.PERSISTENCE_CONTEXT_MANAGER )).getCommandScopedPersistenceContext();
WorkItemInfo workItemInfo = null;
if (context != null) {
workItemInfo = context.findWorkItemInfo( id );
}
if (workItemInfo == null) {
return null;
}
return internalGetWorkItem(workItemInfo);
}
private WorkItem internalGetWorkItem(WorkItemInfo workItemInfo) {
Environment env = kruntime.getEnvironment();
InternalKnowledgeBase ruleBase = (InternalKnowledgeBase) kruntime.getKieBase();
WorkItem workItem = workItemInfo.getWorkItem(env, ruleBase);
((WorkItemImpl) workItem).setId(workItemInfo.getId());
return workItem;
}
@Override
public Set<WorkItem> getWorkItems() {
return new HashSet<WorkItem>();
}
@Override
public void registerWorkItemHandler(String workItemName, WorkItemHandler handler) {
super.registerWorkItemHandler(workItemName, handler);
this.workItemHandlers.put(workItemName, handler);
}
@Override
public void clearWorkItems() {
}
@Override
public void clear() {
clearWorkItems();
}
}