private void sendRequest(LockRequest request) throws ACIDException {
switch (request.requestType) {
case RequestType.LOCK:
try {
lockMgr.lock(
request.datasetIdObj, request.entityHashValue, request.lockMode, request.txnContext);
} catch (ACIDException e) {
if (request.txnContext.isTimeout()) {
if (request.txnContext.getTxnState() != ITransactionManager.ABORTED) {
request.txnContext.setTxnState(ITransactionManager.ABORTED);
log("*** " + request.txnContext.getJobId() + " lock request causing deadlock ***");
log("Abort --> Releasing all locks acquired by " + request.txnContext.getJobId());
try {
lockMgr.releaseLocks(request.txnContext);
} catch (ACIDException e1) {
e1.printStackTrace();
}
log("Abort --> Released all locks acquired by " + request.txnContext.getJobId());
}
isDone = true;
} else {
throw e;
}
}
break;
case RequestType.INSTANT_LOCK:
try {
lockMgr.instantLock(
request.datasetIdObj, request.entityHashValue, request.lockMode, request.txnContext);
} catch (ACIDException e) {
if (request.txnContext.isTimeout()) {
if (request.txnContext.getTxnState() != ITransactionManager.ABORTED) {
request.txnContext.setTxnState(ITransactionManager.ABORTED);
log("*** " + request.txnContext.getJobId() + " lock request causing deadlock ***");
log("Abort --> Releasing all locks acquired by " + request.txnContext.getJobId());
try {
lockMgr.releaseLocks(request.txnContext);
} catch (ACIDException e1) {
e1.printStackTrace();
}
log("Abort --> Released all locks acquired by " + request.txnContext.getJobId());
}
isDone = true;
} else {
throw e;
}
}
break;
case RequestType.TRY_LOCK:
request.isTryLockFailed =
!lockMgr.tryLock(
request.datasetIdObj,
request.entityHashValue,
request.lockMode,
request.txnContext);
break;
case RequestType.INSTANT_TRY_LOCK:
lockMgr.instantTryLock(
request.datasetIdObj, request.entityHashValue, request.lockMode, request.txnContext);
break;
case RequestType.UNLOCK:
lockMgr.unlock(
request.datasetIdObj, request.entityHashValue, request.lockMode, request.txnContext);
break;
case RequestType.RELEASE_LOCKS:
lockMgr.releaseLocks(request.txnContext);
break;
default:
throw new UnsupportedOperationException("Unsupported lock method");
}
try {
Thread.sleep((long) 0);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
