org.apache.ode.bpel.engine.BpelProcess Maven / Gradle / Ivy
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* 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.ode.bpel.engine;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ode.agents.memory.SizingAgent;
import org.apache.ode.bpel.common.FaultException;
import org.apache.ode.bpel.common.ProcessState;
import org.apache.ode.bpel.dao.BpelDAOConnection;
import org.apache.ode.bpel.dao.MessageExchangeDAO;
import org.apache.ode.bpel.dao.ProcessDAO;
import org.apache.ode.bpel.dao.ProcessInstanceDAO;
import org.apache.ode.bpel.engine.extvar.ExternalVariableConf;
import org.apache.ode.bpel.engine.extvar.ExternalVariableManager;
import org.apache.ode.bpel.evt.ProcessInstanceEvent;
import org.apache.ode.bpel.explang.ConfigurationException;
import org.apache.ode.bpel.explang.EvaluationException;
import org.apache.ode.bpel.extension.ExtensionBundleRuntime;
import org.apache.ode.bpel.extension.ExtensionCorrelationFilter;
import org.apache.ode.bpel.iapi.*;
import org.apache.ode.bpel.iapi.MessageExchange.Status;
import org.apache.ode.bpel.iapi.ProcessConf.CLEANUP_CATEGORY;
import org.apache.ode.bpel.iapi.Scheduler.JobDetails;
import org.apache.ode.bpel.iapi.Scheduler.JobType;
import org.apache.ode.bpel.intercept.InstanceCountThrottler;
import org.apache.ode.bpel.intercept.InterceptorInvoker;
import org.apache.ode.bpel.intercept.MessageExchangeInterceptor;
import org.apache.ode.bpel.o.*;
import org.apache.ode.bpel.runtime.*;
import org.apache.ode.bpel.runtime.channels.FaultData;
import org.apache.ode.jacob.soup.ReplacementMap;
import org.apache.ode.utils.ObjectPrinter;
import org.apache.ode.utils.Properties;
import org.apache.ode.utils.msg.MessageBundle;
import org.w3c.dom.*;
import javax.wsdl.Fault;
import javax.xml.namespace.QName;
import java.io.InputStream;
import java.net.URI;
import java.util.*;
import java.util.concurrent.Callable;
/**
* Entry point into the runtime of a BPEL process.
*
* @author mszefler
* @author Matthieu Riou
*/
public class BpelProcess {
static final Log __log = LogFactory.getLog(BpelProcess.class);
private static final Messages __msgs = MessageBundle.getMessages(Messages.class);
private volatile Map _partnerRoles;
private volatile Map _myRoles;
/** Mapping from a myrole to a {"Service Name" (QNAME) / port}. It's actually more a tuple than a map as
* it's important to note that the same process with the same endpoint can have 2 different myroles. */
private volatile Map _endpointToMyRoleMap;
/** Mapping from a potentially shared endpoint to its EPR */
private SharedEndpoints _sharedEps;
// Backup hashmaps to keep initial endpoints handy after dehydration
private Map _myEprs = new HashMap();
private Map _partnerEprs = new HashMap();
private Map _partnerChannels = new HashMap();
final QName _pid;
private volatile OProcess _oprocess;
// Has the process already been hydrated before?
private boolean _hydratedOnce = false;
/** Last time the process was used. */
private volatile long _lastUsed;
BpelEngineImpl _engine;
ClassLoader _classLoader = getClass().getClassLoader();
DebuggerSupport _debugger;
ExpressionLanguageRuntimeRegistry _expLangRuntimeRegistry;
private ReplacementMap _replacementMap;
final ProcessConf _pconf;
/** {@link MessageExchangeInterceptor}s registered for this process. */
private final List _mexInterceptors = new ArrayList();
/** Latch-like thing to control hydration/dehydration. */
private HydrationLatch _hydrationLatch;
/** Deploy-time configuraton for external variables. */
private ExternalVariableConf _extVarConf;
private ExternalVariableManager _evm;
public static final QName PROP_PATH = new QName("PATH");
public static final QName PROP_SVG = new QName("SVG");
public static final QName PROP_LAZY_HYDRATE = new QName("process.hydration.lazy");
public static final QName PROP_MAX_INSTANCES = new QName("process.instance.throttled.maximum.count");
// The ratio of in-memory vs serialized size of compiled bpel object.
private static final int PROCESS_MEMORY_TO_SERIALIZED_SIZE_RATIO = 5;
Set _mustUnderstandExtensions;
Map _extensionRegistry;
Map _filterRegistry;
public BpelProcess(ProcessConf conf) {
_pid = conf.getProcessId();
_pconf = conf;
_hydrationLatch = new HydrationLatch();
}
/**
* Retrives the base URI to use for local resource resolution.
*
* @return URI - instance representing the absolute file path to the physical location of the process definition folder.
*/
public URI getBaseResourceURI() {
return this._pconf.getBaseURI();
}
/**
* Intiialize the external variable configuration/engine manager. This is called from hydration logic, so it
* is possible to change the external variable configuration at runtime.
*
*/
void initExternalVariables() {
List conf = _pconf.getExtensionElement(ExternalVariableConf.EXTVARCONF_ELEMENT);
_extVarConf = new ExternalVariableConf(conf);
_evm = new ExternalVariableManager(_pid, _extVarConf, _engine._contexts.externalVariableEngines, _oprocess);
}
public String toString() {
return "BpelProcess[" + _pid + "]";
}
public ExternalVariableManager getEVM() {
return _evm;
}
public void recoverActivity(ProcessInstanceDAO instanceDAO, String channel, long activityId, String action, FaultData fault) {
if (__log.isDebugEnabled())
__log.debug("Recovering activity in process " + instanceDAO.getInstanceId() + " with action " + action);
markused();
BpelRuntimeContextImpl processInstance = createRuntimeContext(instanceDAO, null, null);
processInstance.recoverActivity(channel, activityId, action, fault);
}
protected DebuggerSupport createDebuggerSupport() {
return new DebuggerSupport(this);
}
public DebuggerSupport getDebuggerSupport() {
return _debugger;
}
static String generateMessageExchangeIdentifier(String partnerlinkName, String operationName) {
StringBuffer sb = new StringBuffer(partnerlinkName);
sb.append('.');
sb.append(operationName);
return sb.toString();
}
public interface InvokeHandler {
boolean invoke(PartnerLinkMyRoleImpl target, PartnerLinkMyRoleImpl.RoutingInfo routingInfo, boolean createInstance);
}
public boolean invokeProcess(MyRoleMessageExchangeImpl mex, InvokeHandler invokeHandler, boolean enqueue) {
boolean routed = false;
try {
_hydrationLatch.latch(1);
List targets = getMyRolesForService(mex.getServiceName());
if (targets.isEmpty()) {
// String errmsg = __msgs.msgMyRoleRoutingFailure(mex.getMessageExchangeId());
// __log.error(errmsg);
// mex.setFailure(MessageExchange.FailureType.UNKNOWN_ENDPOINT, errmsg, null);
return false;
}
mex.getDAO().setProcess(getProcessDAO());
if (!processInterceptors(mex, InterceptorInvoker.__onProcessInvoked)) {
__log.debug("Aborting processing of mex " + mex + " due to interceptors.");
return false;
}
markused();
// Ideally, if Java supported closure, the routing code would return null or the appropriate
// closure to handle the route.
List routings = null;
for (PartnerLinkMyRoleImpl target : targets) {
routings = target.findRoute(mex);
boolean createInstance = target.isCreateInstance(mex);
if (mex.getStatus() != MessageExchange.Status.FAILURE && routings!=null) {
for (PartnerLinkMyRoleImpl.RoutingInfo routing : routings) {
if(routing.messageRoute == null || isSameDeployer(routing, this._pconf.getDeployer())) {
routed = routed || invokeHandler.invoke(target, routing, createInstance);
}
}
}
if (routed) {
break;
}
}
// Nothing found, saving for later
if (!routed && enqueue) {
// TODO this is kind of hackish when no match and more than one myrole is selected.
// we save the routing on the last myrole
// actually the message queue should be attached to the instance instead of the correlator
targets.get(targets.size()-1).noRoutingMatch(mex, routings);
} else {
// Now we have to update our message exchange status. If the was not hit during the
// invocation, then we will be in the "REQUEST" phase which means that either this was a one-way
// or a two-way that needs to delivery the reply asynchronously.
if (mex.getStatus() == MessageExchange.Status.REQUEST) {
mex.setStatus(MessageExchange.Status.ASYNC);
}
markused();
}
} finally {
_hydrationLatch.release(1);
}
// For a one way, once the engine is done, the mex can be safely released.
// Sean: not really, if route is not found, we cannot delete the mex yet
// Rafal: We don't do cleanup here
// if (mex.getPattern().equals(MessageExchange.MessageExchangePattern.REQUEST_ONLY) && routed && getCleanupCategories(false).contains(CLEANUP_CATEGORY.MESSAGES)) {
// mex.release();
// }
return routed;
}
private boolean isSameDeployer(PartnerLinkMyRoleImpl.RoutingInfo routing, String deployer){
return this._engine._activeProcesses.get(routing.messageRoute.getTargetInstance().getProcess().getProcessId())
.getConf().getDeployer().equals(deployer);
}
private boolean isActive() {
return _pconf.getState() == org.apache.ode.bpel.iapi.ProcessState.ACTIVE;
}
/**
* Entry point for message exchanges aimed at the my role.
*
* @param mex
* @param enqueue
* @return boolean
*/
boolean invokeProcess(final MyRoleMessageExchangeImpl mex, boolean enqueue) {
return invokeProcess(mex, new InvokeHandler() {
public boolean invoke(PartnerLinkMyRoleImpl target, PartnerLinkMyRoleImpl.RoutingInfo routing, boolean createInstance) {
if (routing.messageRoute == null && createInstance) {
// No route but we can create a new instance
target.invokeNewInstance(mex, routing);
return true;
} else if (routing.messageRoute != null) {
// Found a route, hitting it
_engine.acquireInstanceLock(routing.messageRoute.getTargetInstance().getInstanceId());
target.invokeInstance(mex, routing);
return true;
}
return false;
}
}, enqueue);
}
/** Several myroles can use the same service in a given process */
private List getMyRolesForService(QName serviceName) {
List myRoles = new ArrayList(5);
for (Map.Entry e : getEndpointToMyRoleMap().entrySet()) {
if (e.getValue().serviceName.equals(serviceName))
myRoles.add(e.getKey());
}
return myRoles;
}
void initMyRoleMex(MyRoleMessageExchangeImpl mex) {
markused();
PartnerLinkMyRoleImpl target = null;
for (Map.Entry e : getEndpointToMyRoleMap().entrySet()) {
if (e.getValue().serviceName.equals(mex.getServiceName())) {
// First one is fine as we're only interested in the portType and operation here and
// even if a process has 2 myrole partner links
target = e.getKey();
break;
}
}
if (target != null) {
mex.setPortOp(target._plinkDef.myRolePortType, target._plinkDef.getMyRoleOperation(mex.getOperationName()));
} else {
__log.warn("Couldn't find endpoint from service " + mex.getServiceName() + " when initializing a myRole mex.");
}
}
/**
* Extract the value of a BPEL property from a BPEL messsage variable.
*
* @param msgData
* message variable data
* @param alias
* alias to apply
* @param target
* description of the data (for error logging only)
* @return value of the property
* @throws FaultException
*/
String extractProperty(Element msgData, Map headerParts, OProcess.OPropertyAlias alias, String target) throws FaultException {
markused();
PropertyAliasEvaluationContext ectx = new PropertyAliasEvaluationContext(msgData, headerParts, alias);
Node lValue = ectx.getRootNode();
if (alias.location != null) {
try {
lValue = _expLangRuntimeRegistry.evaluateNode(alias.location, ectx);
} catch (EvaluationException ec) {
throw new FaultException(getOProcess().constants.qnSelectionFailure, alias.getDescription());
}
}
if (lValue == null) {
String errmsg = __msgs.msgPropertyAliasReturnedNullSet(alias.getDescription(), target);
if (__log.isErrorEnabled()) {
__log.error(errmsg);
}
throw new FaultException(getOProcess().constants.qnSelectionFailure, errmsg);
}
if (lValue.getNodeType() == Node.ELEMENT_NODE) {
// This is a bit hokey, we concatenate all the children's values; we
// really should be checking to make sure that we are only dealing
// with text and attribute nodes.
StringBuffer val = new StringBuffer();
NodeList nl = lValue.getChildNodes();
for (int i = 0; i < nl.getLength(); ++i) {
Node n = nl.item(i);
val.append(n.getNodeValue());
}
return val.toString();
} else if (lValue.getNodeType() == Node.TEXT_NODE) {
return ((Text) lValue).getWholeText();
} else if (lValue.getNodeType() == Node.ATTRIBUTE_NODE) {
return ((Attr)lValue).getValue();
} else
return null;
}
/**
* Get the element name for a given WSDL part. If the part is an element part, the name of that element is returned.
* If the part is an XML schema typed part, then the name of the part is returned in the null namespace.
*
* @param part
* WSDL {@link javax.wsdl.Part}
* @return name of element containing said part
*/
static QName getElementNameForPart(OMessageVarType.Part part) {
return (part.type instanceof OElementVarType) ? ((OElementVarType) part.type).elementType : new QName(null, part.name);
}
/**
* Process the message-exchange interceptors.
*
* @param mex
* message exchange
* @return true if execution should continue, false otherwise
*/
public boolean processInterceptors(MyRoleMessageExchangeImpl mex, InterceptorInvoker invoker) {
InterceptorContextImpl ictx = new InterceptorContextImpl(_engine._contexts.dao.getConnection(), getProcessDAO(), _pconf, _engine, this);
for (MessageExchangeInterceptor i : _mexInterceptors)
if (!mex.processInterceptor(i, mex, ictx, invoker))
return false;
for (MessageExchangeInterceptor i : getEngine().getGlobalInterceptors())
if (!mex.processInterceptor(i, mex, ictx, invoker))
return false;
return true;
}
/**
* @see org.apache.ode.bpel.engine.BpelProcess#handleJobDetails(java.util.Map)
*/
public boolean handleJobDetails(JobDetails jobData) {
boolean routed = true;
try {
_hydrationLatch.latch(1);
markused();
if (__log.isDebugEnabled()) {
__log.debug(ObjectPrinter.stringifyMethodEnter("handleJobDetails", new Object[] { "jobData", jobData }));
}
JobDetails we = jobData;
// Process level events
if (we.getType() == JobType.INVOKE_INTERNAL || we.getType() == JobType.MEX_MATCHER) {
if (__log.isDebugEnabled()) {
__log.debug(we.getType() + " event for mexid " + we.getMexId());
}
MyRoleMessageExchangeImpl mex = (MyRoleMessageExchangeImpl) _engine.getMessageExchange(we.getMexId());
if (we.getType() == JobType.MEX_MATCHER && !mex.getDAO().lockPremieMessages()) {
//Skip if already processed
return true;
}
routed = invokeProcess(mex, (Boolean) jobData.detailsExt.get("enqueue"));
if (we.getType() == JobType.MEX_MATCHER && routed) {
mex.getDAO().releasePremieMessages();
}
} else {
// Instance level events
ProcessInstanceDAO procInstance = getProcessDAO().getInstance(we.getInstanceId());
if (procInstance == null) {
if (__log.isDebugEnabled()) {
__log.debug("handleJobDetails: no ProcessInstance found with iid " + we.getInstanceId() + "; ignoring.");
}
return true;
}
BpelRuntimeContextImpl processInstance = createRuntimeContext(procInstance, null, null);
switch (we.getType()) {
case TIMER:
if (__log.isDebugEnabled()) {
__log.debug("handleJobDetails: TimerWork event for process instance " + processInstance);
}
processInstance.timerEvent(we.getChannel());
break;
case RESUME:
if (__log.isDebugEnabled()) {
__log.debug("handleJobDetails: ResumeWork event for iid " + we.getInstanceId());
}
processInstance.execute();
break;
case INVOKE_RESPONSE:
if (__log.isDebugEnabled()) {
__log.debug("InvokeResponse event for iid " + we.getInstanceId());
}
processInstance.invocationResponse(we.getMexId(), we.getChannel());
processInstance.execute();
break;
case MATCHER:
if (__log.isDebugEnabled()) {
__log.debug("Matcher event for iid " + we.getInstanceId());
}
if( procInstance.getState() == ProcessState.STATE_COMPLETED_OK
|| procInstance.getState() == ProcessState.STATE_COMPLETED_WITH_FAULT ) {
__log.debug("A matcher event was aborted. The process is already completed.");
return true;
}
processInstance.matcherEvent(we.getCorrelatorId(), we.getCorrelationKeySet());
}
}
} finally {
_hydrationLatch.release(1);
}
return routed;
}
private void setRoles(OProcess oprocess) {
_partnerRoles = new HashMap();
_myRoles = new HashMap();
_endpointToMyRoleMap = new HashMap();
// Create myRole endpoint name mapping (from deployment descriptor)
HashMap myRoleEndpoints = new HashMap();
for (Map.Entry provide : _pconf.getProvideEndpoints().entrySet()) {
OPartnerLink plink = oprocess.getPartnerLink(provide.getKey());
if (plink == null) {
String errmsg = "Error in deployment descriptor for process " + _pid + "; reference to unknown partner link "
+ provide.getKey();
__log.error(errmsg);
throw new BpelEngineException(errmsg);
}
myRoleEndpoints.put(plink, provide.getValue());
}
// Create partnerRole initial value mapping
for (Map.Entry invoke : _pconf.getInvokeEndpoints().entrySet()) {
OPartnerLink plink = oprocess.getPartnerLink(invoke.getKey());
if (plink == null) {
String errmsg = "Error in deployment descriptor for process " + _pid + "; reference to unknown partner link "
+ invoke.getKey();
__log.error(errmsg);
throw new BpelEngineException(errmsg);
}
__log.debug("Processing element for process " + _pid + ": partnerlink " + invoke.getKey() + " --> "
+ invoke.getValue());
}
for (OPartnerLink pl : oprocess.getAllPartnerLinks()) {
if (pl.hasMyRole()) {
Endpoint endpoint = myRoleEndpoints.get(pl);
if (endpoint == null)
throw new IllegalArgumentException("No service name for myRole plink " + pl.getName());
PartnerLinkMyRoleImpl myRole = new PartnerLinkMyRoleImpl(this, pl, endpoint);
_myRoles.put(pl, myRole);
_endpointToMyRoleMap.put(myRole, endpoint);
}
if (pl.hasPartnerRole()) {
Endpoint endpoint = _pconf.getInvokeEndpoints().get(pl.getName());
if (endpoint == null && pl.initializePartnerRole)
throw new IllegalArgumentException(pl.getName() + " must be bound to an endpoint in deploy.xml");
PartnerLinkPartnerRoleImpl partnerRole = new PartnerLinkPartnerRoleImpl(this, pl, endpoint);
_partnerRoles.put(pl, partnerRole);
}
}
}
public ProcessDAO getProcessDAO() {
return _pconf.isTransient() ? _engine._contexts.inMemDao.getConnection().getProcess(_pid) : getEngine()._contexts.dao
.getConnection().getProcess(_pid);
}
static String genCorrelatorId(OPartnerLink plink, String opName) {
return plink.getName() + "." + opName;
}
/**
* De-serialize the compiled process representation from a stream.
*
* @param is
* input stream
* @return process information from configuration database
*/
private OProcess deserializeCompiledProcess(InputStream is) throws Exception {
OProcess compiledProcess;
Serializer ofh = new Serializer(is);
compiledProcess = ofh.readOProcess();
return compiledProcess;
}
/**
* Get all the services that are implemented by this process.
*
* @return list of qualified names corresponding to the myroles.
*/
public Set getServiceNames() {
Set endpoints = new HashSet();
for (Endpoint provide : _pconf.getProvideEndpoints().values()) {
endpoints.add(provide);
}
return endpoints;
}
void activate(BpelEngineImpl engine) {
_engine = engine;
_sharedEps = _engine.getSharedEndpoints();
_debugger = createDebuggerSupport();
if (getInstanceMaximumCount() < Integer.MAX_VALUE)
registerMessageExchangeInterceptor(new InstanceCountThrottler());
__log.debug("Activating " + _pid);
// Activate all the my-role endpoints.
for (Map.Entry entry : _pconf.getProvideEndpoints().entrySet()) {
Endpoint endpoint = entry.getValue();
EndpointReference initialEPR = null;
if (isShareable(endpoint)) {
// Check if the EPR already exists for the given endpoint
initialEPR = _sharedEps.getEndpointReference(endpoint);
if (initialEPR == null) {
// Create an EPR by physically activating the endpoint
initialEPR = _engine._contexts.bindingContext.activateMyRoleEndpoint(_pid, endpoint);
_sharedEps.addEndpoint(endpoint, initialEPR);
__log.debug("Activated " + _pid + " myrole " + entry.getKey() + ": EPR is " + initialEPR);
}
// Increment the reference count on the endpoint
_sharedEps.incrementReferenceCount(endpoint);
} else {
// Create an EPR by physically activating the endpoint
initialEPR = _engine._contexts.bindingContext.activateMyRoleEndpoint(_pid, endpoint);
__log.debug("Activated " + _pid + " myrole " + entry.getKey() + ": EPR is " + initialEPR);
}
_myEprs.put(endpoint, initialEPR);
}
__log.debug("Activated " + _pid);
markused();
}
void deactivate() {
// the BindingContext contains only the endpoints for the latest process version
//if (org.apache.ode.bpel.iapi.ProcessState.ACTIVE.equals(_pconf.getState())) {
// Deactivate all the my-role endpoints.
for (Endpoint endpoint : _myEprs.keySet()) {
// Deactivate the EPR only if there are no more references
// to this endpoint from any (active) BPEL process.
if (isShareable(endpoint)) {
if(__log.isDebugEnabled()) __log.debug("deactivating shared endpoint " + endpoint+ " for pid "+ _pid);
if (!_sharedEps.decrementReferenceCount(endpoint)) {
_engine._contexts.bindingContext.deactivateMyRoleEndpoint(_pid, endpoint);
_sharedEps.removeEndpoint(endpoint);
}
} else {
if(__log.isDebugEnabled()) __log.debug("deactivating non-shared endpoint " + endpoint + " for pid "+ _pid);
_engine._contexts.bindingContext.deactivateMyRoleEndpoint(_pid, endpoint);
}
}
// TODO Deactivate all the partner-role channels
//} else {
// if(__log.isDebugEnabled()) __log.debug("pid "+_pid+" is not ACTIVE, no endpoints to deactivate");
//}
}
private boolean isShareable(Endpoint endpoint) {
return _pconf.isSharedService(endpoint.serviceName);
}
protected EndpointReference getInitialPartnerRoleEPR(OPartnerLink link) {
try {
_hydrationLatch.latch(1);
PartnerLinkPartnerRoleImpl prole = _partnerRoles.get(link);
if (prole == null)
throw new IllegalStateException("Unknown partner link " + link);
return prole.getInitialEPR();
} finally {
_hydrationLatch.release(1);
}
}
protected Endpoint getInitialPartnerRoleEndpoint(OPartnerLink link) {
try {
_hydrationLatch.latch(1);
PartnerLinkPartnerRoleImpl prole = _partnerRoles.get(link);
if (prole == null)
throw new IllegalStateException("Unknown partner link " + link);
return prole._initialPartner;
} finally {
_hydrationLatch.release(1);
}
}
protected EndpointReference getInitialMyRoleEPR(OPartnerLink link) {
try {
_hydrationLatch.latch(1);
PartnerLinkMyRoleImpl myRole = _myRoles.get(link);
if (myRole == null)
throw new IllegalStateException("Unknown partner link " + link);
return myRole.getInitialEPR();
} finally {
_hydrationLatch.release(1);
}
}
public QName getPID() {
return _pid;
}
protected PartnerRoleChannel getPartnerRoleChannel(OPartnerLink partnerLink) {
try {
_hydrationLatch.latch(1);
PartnerLinkPartnerRoleImpl prole = _partnerRoles.get(partnerLink);
if (prole == null)
throw new IllegalStateException("Unknown partner link " + partnerLink);
return prole._channel;
} finally {
_hydrationLatch.release(1);
}
}
public void saveEvent(ProcessInstanceEvent event, ProcessInstanceDAO instanceDao) {
saveEvent(event, instanceDao, null);
}
public void saveEvent(ProcessInstanceEvent event, ProcessInstanceDAO instanceDao, List scopeNames) {
markused();
if (_pconf.isEventEnabled(scopeNames, event.getType())) {
// notify the listeners
_engine.fireEvent(event);
if (instanceDao != null)
instanceDao.insertBpelEvent(event);
else
__log.debug("Couldn't find instance to save event, no event generated!");
}
}
/**
* Ask the process to dehydrate.
*/
void dehydrate() {
try {
_hydrationLatch.latch(0);
// We don't actually need to do anything, the latch will run the doDehydrate method
// when necessary..
} finally {
_hydrationLatch.release(0);
}
}
void hydrate() {
try {
_hydrationLatch.latch(1);
// We don't actually need to do anything, the latch will run the doHydrate method
// when necessary..
} finally {
_hydrationLatch.release(1);
}
}
public OProcess getOProcess() {
try {
_hydrationLatch.latch(1);
return _oprocess;
} finally {
_hydrationLatch.release(1);
}
}
private Map getEndpointToMyRoleMap() {
try {
_hydrationLatch.latch(1);
return _endpointToMyRoleMap;
} finally {
_hydrationLatch.release(1);
}
}
public ReplacementMap getReplacementMap(QName processName) {
try {
_hydrationLatch.latch(1);
if (processName.equals(_pid)) return _replacementMap;
else
try {
// We're asked for an older version of this process, fetching it
OProcess oprocess = _engine.getOProcess(processName);
if (oprocess == null) {
String errmsg = "The process " + _pid + " is not available anymore.";
__log.error(errmsg);
throw new InvalidProcessException(errmsg, InvalidProcessException.RETIRED_CAUSE_CODE);
}
// Older versions may ventually need more expression languages
registerExprLang(oprocess);
return new ReplacementMapImpl(oprocess);
} catch (Exception e) {
String errmsg = "The process " + _pid + " is not available anymore.";
__log.error(errmsg, e);
throw new InvalidProcessException(errmsg, InvalidProcessException.RETIRED_CAUSE_CODE);
}
} finally {
_hydrationLatch.release(1);
}
}
protected BpelEngineImpl getEngine() {
return _engine;
}
public boolean isInMemory() {
return _pconf.isTransient();
}
public long getLastUsed() {
return _lastUsed;
}
QName getProcessType() {
return _pconf.getType();
}
/**
* Get a hint as to whether this process is hydrated. Note this is only a hint, since things could change.
*/
public boolean hintIsHydrated() {
return _oprocess != null;
}
/** Keep track of the time the process was last used. */
private final void markused() {
_lastUsed = System.currentTimeMillis();
}
/** Create a version-appropriate runtime context. */
protected BpelRuntimeContextImpl createRuntimeContext(ProcessInstanceDAO dao, PROCESS template,
MyRoleMessageExchangeImpl instantiatingMessageExchange) {
return new BpelRuntimeContextImpl(this, dao, template, instantiatingMessageExchange);
}
private class HydrationLatch extends NStateLatch {
HydrationLatch() {
super(new Runnable[2]);
_transitions[0] = new Runnable() {
public void run() {
doDehydrate();
}
};
_transitions[1] = new Runnable() {
public void run() {
doHydrate();
}
};
}
private void doDehydrate() {
if (_oprocess != null) {
_oprocess.dehydrate();
_oprocess = null;
}
if (_myRoles != null) {
_myRoles.clear();
}
if (_endpointToMyRoleMap != null) {
_endpointToMyRoleMap.clear();
}
if (_partnerRoles != null) {
_partnerRoles.clear();
}
// Don't clear stuff you can't re-populate
// if (_myEprs != null) {
// _myEprs.clear();
// }
// if (_partnerChannels != null) {
// _partnerChannels.clear();
// }
// if (_partnerEprs != null) {
// _partnerEprs.clear();
// }
_replacementMap = null;
_expLangRuntimeRegistry = null;
}
private void doHydrate() {
markused();
__log.debug("Rehydrating process " + _pconf.getProcessId());
try {
InputStream inputStream = _pconf.getCBPInputStream();
try {
_oprocess = deserializeCompiledProcess(inputStream);
} finally {
inputStream.close();
}
} catch (Exception e) {
String errmsg = "The process " + _pid + " is no longer available.";
__log.error(errmsg, e);
throw new BpelEngineException(errmsg, e);
}
if (_partnerRoles == null) {
_partnerRoles = new HashMap();
}
if (_myRoles == null) {
_myRoles = new HashMap();
}
if (_endpointToMyRoleMap == null) {
_endpointToMyRoleMap = new HashMap();
}
if (_myEprs == null) {
_myEprs = new HashMap();
}
if (_partnerChannels == null) {
_partnerChannels = new HashMap();
}
if (_partnerEprs == null) {
_partnerEprs = new HashMap();
}
_replacementMap = new ReplacementMapImpl(_oprocess);
setExtensionRegistry(_engine._contexts.extensionRegistry);
setFilterRegistry(_engine._contexts.correlationFilterRegistry);
// Checking for registered extension bundles, throw an exception when
// a "mustUnderstand" extension is not available
_mustUnderstandExtensions = new HashSet();
for (OProcess.OExtension extension : _oprocess.declaredExtensions) {
if (extension.mustUnderstand) {
if (_extensionRegistry.get(extension.namespaceURI) == null) {
String msg = __msgs.msgExtensionMustUnderstandError(_pconf.getProcessId(), extension.namespaceURI);
__log.error(msg);
throw new BpelEngineException(msg);
} else {
_mustUnderstandExtensions.add(extension.namespaceURI);
}
} else {
__log.warn("The process declares the extension namespace " + extension.namespaceURI
+ " that is unkown to the engine");
}
}
// Create an expression language registry for this process
_expLangRuntimeRegistry = new ExpressionLanguageRuntimeRegistry();
registerExprLang(_oprocess);
setRoles(_oprocess);
initExternalVariables();
if (!_hydratedOnce) {
for (PartnerLinkPartnerRoleImpl prole : _partnerRoles.values()) {
// Null for initializePartnerRole = false
if (prole._initialPartner != null) {
PartnerRoleChannel channel = _engine._contexts.bindingContext.createPartnerRoleChannel(_pid,
prole._plinkDef.partnerRolePortType, prole._initialPartner);
prole._channel = channel;
_partnerChannels.put(prole._initialPartner, prole._channel);
EndpointReference epr = channel.getInitialEndpointReference();
if (epr != null) {
prole._initialEPR = epr;
_partnerEprs.put(prole._initialPartner, epr);
}
__log.debug("Activated " + _pid + " partnerrole " + prole.getPartnerLinkName() + ": EPR is "
+ prole._initialEPR);
}
}
_engine.setProcessSize(_pid, true);
_hydratedOnce = true;
}
for (PartnerLinkMyRoleImpl myrole : _myRoles.values()) {
myrole._initialEPR = _myEprs.get(myrole._endpoint);
}
for (PartnerLinkPartnerRoleImpl prole : _partnerRoles.values()) {
prole._channel = _partnerChannels.get(prole._initialPartner);
if (_partnerEprs.get(prole._initialPartner) != null) {
prole._initialEPR = _partnerEprs.get(prole._initialPartner);
}
}
/*
* If necessary, create an object in the data store to represent the process. We'll re-use an existing object if it already
* exists and matches the GUID.
*/
if (isInMemory()) {
createProcessDAO(_engine._contexts.inMemDao.getConnection(), _pid, _pconf.getVersion(), _oprocess);
} else if (_engine._contexts.scheduler.isTransacted()) {
// If we have a transaction, we do this in the current transaction
if(__log.isDebugEnabled()) __log.debug("Creating new process DAO for " + _pid + " (guid=" + _oprocess.guid + ")...");
createProcessDAO(_engine._contexts.dao.getConnection(), _pid, _pconf.getVersion(), _oprocess);
if(__log.isDebugEnabled()) __log.debug("Created new process DAO for " + _pid + " (guid=" + _oprocess.guid + ").");
} else {
try {
_engine._contexts.scheduler.execTransaction(new Callable © 2015 - 2025 Weber Informatics LLC | Privacy Policy