public void unregister(QName pid) throws BpelEngineException {
if (__log.isTraceEnabled()) __log.trace("unregister: " + pid);
try {
_mngmtLock.writeLock().lockInterruptibly();
} catch (InterruptedException ie) {
__log.debug("unregister() interrupted.", ie);
throw new BpelEngineException(__msgs.msgOperationInterrupted());
}
try {
BpelProcess p;
if (_engine != null) {
p = _engine.unregisterProcess(pid);
if (p != null) {
_registeredProcesses.remove(p);
XslTransformHandler.getInstance().clearXSLSheets(p.getProcessType());
__log.info(__msgs.msgProcessUnregistered(pid));
}
}
} catch (Exception ex) {
__log.error(__msgs.msgProcessUnregisterFailed(pid), ex);
throw new BpelEngineException(ex);
} finally {
_mngmtLock.writeLock().unlock();
}
}
public void start() {
_mngmtLock.writeLock().lock();
try {
if (!checkState(State.INIT, State.RUNNING)) {
__log.debug("start() ignored -- already started");
return;
}
__log.debug("BPEL SERVER starting.");
// Eventually running some migrations before starting
if (!(new MigrationHandler(_contexts)
.migrate(_registeredProcesses, _migrationTransactionTimeout))) {
throw new BpelEngineException(
"An error occurred while migrating your database to a newer version of the server. Please make sure that the required migration scripts have been executed before starting the server.");
}
_state = State.RUNNING;
__log.info(__msgs.msgServerStarted());
if (_dehydrationPolicy != null) {
processDefReaper = new Thread(new ProcessDefReaper(), "Dehydrator");
processDefReaper.setDaemon(true);
processDefReaper.start();
}
} finally {
_mngmtLock.writeLock().unlock();
}
}
public void setProperty(final QName pid, final QName propName, final String value) {
if (__log.isDebugEnabled()) __log.debug("Setting property " + propName + " on process " + pid);
ProcessConfImpl pconf = _processes.get(pid);
if (pconf == null) {
String msg = __msgs.msgProcessNotFound(pid);
__log.info(msg);
throw new ContextException(msg);
}
final DeploymentUnitDir dudir = pconf.getDeploymentUnit();
exec(
new ProcessStoreImpl.Callable<Object>() {
public Object call(ConfStoreConnection conn) {
DeploymentUnitDAO dudao = conn.getDeploymentUnit(dudir.getName());
if (dudao == null) return null;
ProcessConfDAO proc = dudao.getProcess(pid);
if (proc == null) return null;
proc.setProperty(propName, value);
return null;
}
});
fireEvent(new ProcessStoreEvent(ProcessStoreEvent.Type.PROPERTY_CHANGED, pid, dudir.getName()));
}
public void register(ProcessConf conf) {
if (conf == null)
throw new NullPointerException("must specify non-null process configuration.");
__log.debug("register: " + conf.getProcessId());
// Ok, IO out of the way, we will mod the server state, so need to get a
// lock.
try {
_mngmtLock.writeLock().lockInterruptibly();
} catch (InterruptedException ie) {
__log.debug("register(...) interrupted.", ie);
throw new BpelEngineException(__msgs.msgOperationInterrupted());
}
try {
// If the process is already active, do nothing.
if (_engine.isProcessRegistered(conf.getProcessId())) {
__log.debug(
"skipping doRegister" + conf.getProcessId() + ") -- process is already registered");
return;
}
__log.debug("Registering process " + conf.getProcessId() + " with server.");
BpelProcess process = createBpelProcess(conf);
process._classLoader = Thread.currentThread().getContextClassLoader();
_engine.registerProcess(process);
_registeredProcesses.add(process);
if (!isLazyHydratable(process)) {
process.hydrate();
} else {
_engine.setProcessSize(process.getPID(), false);
}
__log.info(__msgs.msgProcessRegistered(conf.getProcessId()));
} catch (Exception ex) {
__log.error(ex);
throw new BpelEngineException(ex);
} finally {
_mngmtLock.writeLock().unlock();
}
}
public void stop() {
_mngmtLock.writeLock().lock();
try {
if (!checkState(State.RUNNING, State.INIT)) {
__log.debug("stop() ignored -- already stopped");
return;
}
__log.debug("BPEL SERVER STOPPING");
if (processDefReaper != null) {
processDefReaper.interrupt();
processDefReaper = null;
}
_contexts.scheduler.stop();
_engine = null;
_state = State.INIT;
__log.info(__msgs.msgServerStopped());
} finally {
_mngmtLock.writeLock().unlock();
}
}
public Collection<QName> undeploy(final String duName) {
try {
exec(
new Callable<Collection<QName>>() {
public Collection<QName> call(ConfStoreConnection conn) {
DeploymentUnitDAO dudao = conn.getDeploymentUnit(duName);
if (dudao != null) dudao.delete();
return null;
}
});
} catch (Exception ex) {
__log.error(
"Error synchronizing with data store; " + duName + " may be reappear after restart!");
}
Collection<QName> undeployed = Collections.emptyList();
DeploymentUnitDir du;
_rw.writeLock().lock();
try {
du = _deploymentUnits.remove(duName);
if (du != null) {
undeployed = toPids(du.getProcessNames(), du.getVersion());
}
for (QName pn : undeployed) {
fireEvent(new ProcessStoreEvent(ProcessStoreEvent.Type.UNDEPLOYED, pn, du.getName()));
__log.info(__msgs.msgProcessUndeployed(pn));
}
_processes.keySet().removeAll(undeployed);
} finally {
_rw.writeLock().unlock();
}
return undeployed;
}
public void setState(final QName pid, final ProcessState state) {
__log.debug("Changing process state for " + pid + " to " + state);
final ProcessConfImpl pconf;
_rw.readLock().lock();
try {
pconf = _processes.get(pid);
if (pconf == null) {
String msg = __msgs.msgProcessNotFound(pid);
__log.info(msg);
throw new ContextException(msg);
}
} finally {
_rw.readLock().unlock();
}
final DeploymentUnitDir dudir = pconf.getDeploymentUnit();
// Update in the database.
ProcessState old =
exec(
new Callable<ProcessState>() {
public ProcessState call(ConfStoreConnection conn) {
DeploymentUnitDAO dudao = conn.getDeploymentUnit(dudir.getName());
if (dudao == null) {
String errmsg = __msgs.msgProcessNotFound(pid);
__log.error(errmsg);
throw new ContextException(errmsg);
}
ProcessConfDAO dao = dudao.getProcess(pid);
if (dao == null) {
String errmsg = __msgs.msgProcessNotFound(pid);
__log.error(errmsg);
throw new ContextException(errmsg);
}
Set processKeys = _processes.keySet();
Iterator processConfQNameItr = processKeys.iterator();
while (processConfQNameItr.hasNext()) {
ProcessConf cachedProcessConf = _processes.get(processConfQNameItr.next());
if (dao.getType().equals(cachedProcessConf.getType())) {
if (ProcessState.ACTIVE == cachedProcessConf.getState()
&& ProcessState.RETIRED == dao.getState()
&& ProcessState.ACTIVE == state) {
String errorMsg =
"Can't activate the process with PID: "
+ dao.getPID()
+ " with version "
+ dao.getVersion()
+ ", as another version of the process with PID : "
+ cachedProcessConf.getProcessId()
+ " with version "
+ cachedProcessConf.getVersion()
+ " is already active.";
__log.error(errorMsg);
throw new ContextException(errorMsg);
}
}
}
ProcessState old = dao.getState();
dao.setState(state);
pconf.setState(state);
return old;
}
});
pconf.setState(state);
if (old != null && old != state)
fireStateChange(pid, state, pconf.getDeploymentUnit().getName());
}
/** Deploys a process. */
public Collection<QName> deploy(
final File deploymentUnitDirectory,
boolean activate,
String duName,
boolean autoincrementVersion) {
__log.info(__msgs.msgDeployStarting(deploymentUnitDirectory));
final Date deployDate = new Date();
// Create the DU and compile/scan it before acquiring lock.
final DeploymentUnitDir du = new DeploymentUnitDir(deploymentUnitDirectory);
if (duName != null) {
// Override the package name if given from the parameter
du.setName(duName);
}
long version;
if (autoincrementVersion || du.getStaticVersion() == -1) {
// Process and DU use a monotonically increased single version number by default.
try {
version = getCurrentVersion();
} finally {
// we need to reset the current version thread local value.
_currentVersion.set(null);
}
} else {
version = du.getStaticVersion();
}
du.setVersion(version);
try {
du.compile();
} catch (CompilationException ce) {
String errmsg = __msgs.msgDeployFailCompileErrors(ce);
__log.error(errmsg, ce);
throw new ContextException(errmsg, ce);
}
du.scan();
final DeployDocument dd = du.getDeploymentDescriptor();
final ArrayList<ProcessConfImpl> processes = new ArrayList<ProcessConfImpl>();
Collection<QName> deployed;
_rw.writeLock().lock();
try {
if (_deploymentUnits.containsKey(du.getName())) {
String errmsg = __msgs.msgDeployFailDuplicateDU(du.getName());
__log.error(errmsg);
throw new ContextException(errmsg);
}
retirePreviousPackageVersions(du);
for (TDeployment.Process processDD : dd.getDeploy().getProcessArray()) {
QName pid = toPid(processDD.getName(), version);
if (_processes.containsKey(pid)) {
String errmsg = __msgs.msgDeployFailDuplicatePID(processDD.getName(), du.getName());
__log.error(errmsg);
throw new ContextException(errmsg);
}
QName type = processDD.getType() != null ? processDD.getType() : processDD.getName();
CBPInfo cbpInfo = du.getCBPInfo(type);
if (cbpInfo == null) {
String errmsg = __msgs.msgDeployFailedProcessNotFound(processDD.getName(), du.getName());
__log.error(errmsg);
throw new ContextException(errmsg);
}
ProcessConfImpl pconf =
new ProcessConfImpl(
pid,
processDD.getName(),
version,
du,
processDD,
deployDate,
calcInitialProperties(du.getProperties(), processDD),
calcInitialState(processDD),
eprContext,
_configDir,
generateProcessEventsAll);
processes.add(pconf);
}
_deploymentUnits.put(du.getName(), du);
for (ProcessConfImpl process : processes) {
__log.info(__msgs.msgProcessDeployed(du.getDeployDir(), process.getProcessId()));
_processes.put(process.getProcessId(), process);
}
} finally {
_rw.writeLock().unlock();
}
// Do the deployment in the DB. We need this so that we remember deployments across system
// shutdowns.
// We don't fail if there is a DB error, simply print some errors.
deployed =
exec(
new Callable<Collection<QName>>() {
public Collection<QName> call(ConfStoreConnection conn) {
// Check that this deployment unit is not deployed.
DeploymentUnitDAO dudao = conn.getDeploymentUnit(du.getName());
if (dudao != null) {
String errmsg = "Database out of synch for DU " + du.getName();
__log.warn(errmsg);
dudao.delete();
}
dudao = conn.createDeploymentUnit(du.getName());
try {
dudao.setDeploymentUnitDir(deploymentUnitDirectory.getCanonicalPath());
} catch (IOException e1) {
String errmsg =
"Error getting canonical path for "
+ du.getName()
+ "; deployment unit will not be available after restart!";
__log.error(errmsg);
}
ArrayList<QName> deployed = new ArrayList<QName>();
// Going trough each process declared in the dd
for (ProcessConfImpl pc : processes) {
try {
ProcessConfDAO newDao =
dudao.createProcess(pc.getProcessId(), pc.getType(), pc.getVersion());
newDao.setState(pc.getState());
for (Map.Entry<QName, Node> prop : pc.getProcessProperties().entrySet()) {
newDao.setProperty(prop.getKey(), DOMUtils.domToString(prop.getValue()));
}
deployed.add(pc.getProcessId());
} catch (Throwable e) {
String errmsg =
"Error persisting deployment record for "
+ pc.getProcessId()
+ "; process will not be available after restart!";
__log.error(errmsg, e);
}
}
return deployed;
}
});
_rw.readLock().lock();
boolean readLockHeld = true;
try {
for (ProcessConfImpl process : processes) {
fireEvent(
new ProcessStoreEvent(
ProcessStoreEvent.Type.DEPLOYED,
process.getProcessId(),
process.getDeploymentUnit().getName()));
fireStateChange(
process.getProcessId(), process.getState(), process.getDeploymentUnit().getName());
}
} catch (Exception e) {
// need to unlock as undeploy operation will need a writeLock
_rw.readLock().unlock();
readLockHeld = false;
// A problem at that point means that engine deployment failed, we don't want the store to
// keep the du
__log.warn("Deployment failed within the engine, store undeploying process.", e);
undeploy(deploymentUnitDirectory);
if (e instanceof ContextException) throw (ContextException) e;
else throw new ContextException("Deployment failed within the engine. " + e.getMessage(), e);
} finally {
if (readLockHeld) _rw.readLock().unlock();
}
return deployed;
}
