/**
* Copyright 2010 JBoss Inc
*
* 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.process.audit;
import java.util.Date;
import java.util.List;
import javax.persistence.EntityManager;
import org.drools.WorkingMemory;
import org.drools.audit.WorkingMemoryLogger;
import org.drools.audit.event.LogEvent;
import org.drools.audit.event.RuleFlowLogEvent;
import org.drools.audit.event.RuleFlowNodeLogEvent;
import org.drools.audit.event.RuleFlowVariableLogEvent;
import org.drools.event.KnowledgeRuntimeEventManager;
import org.drools.impl.StatelessKnowledgeSessionImpl;
import org.drools.runtime.Environment;
import org.drools.runtime.EnvironmentName;
import org.drools.runtime.KnowledgeRuntime;
/**
* Enables history log via JPA.
*
* @author jserdaru
* @author krisv
*
*/
public class JPAWorkingMemoryDbLogger extends WorkingMemoryLogger {
protected Environment env;
public JPAWorkingMemoryDbLogger(WorkingMemory workingMemory) {
super(workingMemory);
env = workingMemory.getEnvironment();
}
public JPAWorkingMemoryDbLogger(KnowledgeRuntimeEventManager session) {
super(session);
if (session instanceof KnowledgeRuntime) {
env = ((KnowledgeRuntime) session).getEnvironment();
} else if (session instanceof StatelessKnowledgeSessionImpl) {
env = ((StatelessKnowledgeSessionImpl) session).getEnvironment();
} else {
throw new IllegalArgumentException(
"Not supported session in logger: " + session.getClass());
}
}
public void logEventCreated(LogEvent logEvent) {
switch (logEvent.getType()) {
case LogEvent.BEFORE_RULEFLOW_CREATED:
RuleFlowLogEvent processEvent = (RuleFlowLogEvent) logEvent;
addProcessLog(processEvent.getProcessInstanceId(), processEvent.getProcessId());
break;
case LogEvent.AFTER_RULEFLOW_COMPLETED:
processEvent = (RuleFlowLogEvent) logEvent;
updateProcessLog(processEvent.getProcessInstanceId());
break;
case LogEvent.BEFORE_RULEFLOW_NODE_TRIGGERED:
RuleFlowNodeLogEvent nodeEvent = (RuleFlowNodeLogEvent) logEvent;
addNodeEnterLog(nodeEvent.getProcessInstanceId(), nodeEvent.getProcessId(), nodeEvent.getNodeInstanceId(), nodeEvent.getNodeId(), nodeEvent.getNodeName());
break;
case LogEvent.BEFORE_RULEFLOW_NODE_EXITED:
nodeEvent = (RuleFlowNodeLogEvent) logEvent;
addNodeExitLog(nodeEvent.getProcessInstanceId(), nodeEvent.getProcessId(), nodeEvent.getNodeInstanceId(), nodeEvent.getNodeId(), nodeEvent.getNodeName());
break;
case LogEvent.AFTER_VARIABLE_INSTANCE_CHANGED:
RuleFlowVariableLogEvent variableEvent = (RuleFlowVariableLogEvent) logEvent;
addVariableLog(variableEvent.getProcessInstanceId(), variableEvent.getProcessId(), variableEvent.getVariableInstanceId(), variableEvent.getVariableId(), variableEvent.getObjectToString());
break;
default:
// ignore all other events
}
}
private void addProcessLog(long processInstanceId, String processId) {
ProcessInstanceLog log = new ProcessInstanceLog(processInstanceId, processId);
getEntityManager().persist(log);
}
@SuppressWarnings("unchecked")
private void updateProcessLog(long processInstanceId) {
List<ProcessInstanceLog> result = getEntityManager().createQuery(
"from ProcessInstanceLog as log where log.processInstanceId = ? and log.end is null")
.setParameter(1, processInstanceId).getResultList();
if (result != null && result.size() != 0) {
ProcessInstanceLog log = result.get(result.size() - 1);
log.setEnd(new Date());
getEntityManager().merge(log);
}
}
private void addNodeEnterLog(long processInstanceId, String processId, String nodeInstanceId, String nodeId, String nodeName) {
NodeInstanceLog log = new NodeInstanceLog(
NodeInstanceLog.TYPE_ENTER, processInstanceId, processId, nodeInstanceId, nodeId, nodeName);
getEntityManager().persist(log);
}
private void addNodeExitLog(long processInstanceId,
String processId, String nodeInstanceId, String nodeId, String nodeName) {
NodeInstanceLog log = new NodeInstanceLog(
NodeInstanceLog.TYPE_EXIT, processInstanceId, processId, nodeInstanceId, nodeId, nodeName);
getEntityManager().persist(log);
}
private void addVariableLog(long processInstanceId, String processId, String variableInstanceId, String variableId, String objectToString) {
VariableInstanceLog log = new VariableInstanceLog(
processInstanceId, processId, variableInstanceId, variableId, objectToString);
getEntityManager().persist(log);
}
public void dispose() {
}
protected EntityManager getEntityManager() {
return (EntityManager) env.get(EnvironmentName.CMD_SCOPED_ENTITY_MANAGER);
}
}