@Override
public synchronized Topic subscribeSharedObject(String name, boolean blocking)
throws ObjectNotExistsException, OperationForbiddenException, Exception {
// preparing locker to wait for response
try {
JCsyncAbstractOperation operation =
JCsyncAbstractOperation.get_OP_REQ_SUBSCRIBE(name, this.getNodeInfo().getName());
// inform Consistency Manager before sending request
this.dcManager.inititBuffer(name);
this.dcManager.beforeRequestSend(operation, blocking);
this.pubsubLayer.getCustomAlgorith().registerSharedObjectName(name);
this.pubsubLayer.getCustomAlgorith().networkSubscribe(name);
Short respCode = (Short) this.dcManager.afterRequestSend(operation, blocking);
if (respCode != null) {
// if the topic was created
if (respCode == JCSyncConstans.J_RESP_GENERAL_SUCCESS) {
return this.pubsubLayer.getTopic(name);
// if node can't subscribe to this topic
} else if (respCode == JCSyncConstans.J_ERR_COLLECTION_AUTH_ERROR) {
throw OperationForbiddenException.instance();
// if the topic not exists
} else if (respCode == JCSyncConstans.J_ERR_OBJECT_NOT_EXISTS) {
throw ObjectNotExistsException.instance();
} else {
log.fatal(
"received UNHANLED respCode for operation: "
+ operation.getOperationType()
+ ", objectID:"
+ operation.getObjectID());
}
} else {
log.fatal(
"received [null] respCode for operation: "
+ operation.getOperationType()
+ ", objectID:"
+ operation.getObjectID());
}
} catch (InterruptedException e) {
throw new Exception("An error on (subscribeSharedObject)");
}
log.error("(subscribeSharedObject) returns Topic = null from unknow reason!");
return null;
}
@Override
public void onDeliverPubSubResponse(
String name, short operationType, short respCode, long reqID) {
log.trace(
this.pubsubLayer.getNodeInfo().getName()
+ ": (onDeliverPubSubResponse) , topicName: "
+ name
+ ", operationType: "
+ operationType
+ ", respCode: "
+ respCode
+ ",reqID: "
+ reqID);
short rCode = respCode;
// mapping respCode - in the PubSub sometimes calls respCodes from PubSUbConstants and sometimes
// from NodeError
if (respCode == NodeError.AUTHERR) {
rCode = PubSubConstants.RESP_FORBIDDEN;
} else if (respCode == NodeError.NOSUCHTOPICERR) {
rCode = PubSubConstants.RESP_DOESNOTEXIST;
}
respCode = rCode;
// mapping pubsub respCodes to jcsync resp codes
if (respCode == PubSubConstants.RESP_SUCCESS) {
rCode = JCSyncConstans.J_RESP_GENERAL_SUCCESS;
} else if (respCode == PubSubConstants.RESP_ALREADYEXISTS) {
rCode = JCSyncConstans.J_ERR_COLLECTION_EXISTS;
} else if (respCode == PubSubConstants.RESP_DOESNOTEXIST) {
rCode = JCSyncConstans.J_ERR_OBJECT_NOT_EXISTS;
} else if (respCode == PubSubConstants.RESP_FORBIDDEN) {
rCode = JCSyncConstans.J_ERR_COLLECTION_AUTH_ERROR;
}
respCode = rCode;
try {
/* sometimes response is already received, but the locker is not
* properly initialized in the consistency manager - if
* the request is sending then wait for the end of it. *
*/
this.request_response_locker.readLock().lock();
if ((operationType & OP_GENERIC_JCSYNC_OPERATION) == OP_GENERIC_JCSYNC_OPERATION) {
JCsyncAbstractOperation o = null; // JCsyncAbstractOperation.getByType(operationType, name);
o = JCsyncAbstractOperation.getByType(operationType, name, this.getNodeInfo().getName());
o.setReqestID(reqID);
if (getConsistencyManager(name) != null) {
getConsistencyManager(name).responseReceived(o, respCode);
} else {
this.dcManager.responseReceived(o, respCode);
}
return;
}
switch (operationType) {
case PubSubConstants.MSG_CREATETOPIC:
{
JCsyncAbstractOperation o = null;
o =
JCsyncAbstractOperation.get_OP_REQ_CREATE_SHARED_OBJECT(
name, this.getNodeInfo().getName());
this.dcManager.responseReceived(o, respCode);
return;
}
case PubSubConstants.MSG_SUBSCRIBE:
{
JCsyncAbstractOperation o = null;
o = JCsyncAbstractOperation.get_OP_REQ_SUBSCRIBE(name, this.getNodeInfo().getName());
this.dcManager.responseReceived(o, respCode);
return;
}
case PubSubConstants.MSG_UNSUBSCRIBE:
{
JCsyncAbstractOperation o = null;
o = JCsyncAbstractOperation.get_OP_REQ_UNSUBSCRIBE(name, this.getNodeInfo().getName());
this.dcManager.responseReceived(o, respCode);
return;
}
case PubSubConstants.EVENT_REMOVETOPIC:
{
JCsyncAbstractOperation o = null;
o = JCsyncAbstractOperation.get_OP_REQ_REMOVE(name, this.getNodeInfo().getName());
this.dcManager.responseReceived(o, respCode);
return;
}
default:
{
log.fatal(
"Received unsuported response code: "
+ respCode
+ ", for operation: "
+ operationType
+ ", for shared object name: "
+ name);
}
}
} catch (Exception ex) {
log.error("An error while processing (onDeliverPubSubResponse)", ex);
} finally {
this.request_response_locker.readLock().unlock();
}
}
