public IMessage[] GetMessageArray(String fieldName)
{
object obj = null;
if (String.IsNullOrEmpty(fieldName))
{
throw new System.ArgumentException("field name is null or empty");
}
if (!data.TryGetValue(fieldName, out obj))
{
throw new System.Exception("field " + fieldName + " does not exist");
}
if (obj is JsonArray)
{
JsonArray arr = (JsonArray)obj;
if (arr.Count == 0)
{
return(new IMessage[0]);
}
else if (arr[0] is JsonObject)
{
IMessage[] retVal = new IMessage[arr.Count];
for (int i = 0, max = arr.Count; i < max; i++)
{
retVal[i] = new JSONMessage((JsonObject)arr[i]);
}
return(retVal);
}
else
{
throw new System.Exception("field " + fieldName + " is not of type MESSAGE_ARRAY");
}
}
return(null);
}
private void handleMessage(JsonObject envelope)
{
lock (processLock)
{
long seqNum = 0;
long reqId = 0;
long msgId = 0;
long deliveryCount = 0;
String replyTo = null;
String to = (String)envelope[ProtocolConstants.TO_FIELD];
JsonObject body = (JsonObject)envelope[ProtocolConstants.BODY_FIELD];
object fieldObj;
if (envelope.TryGetValue(ProtocolConstants.SEQ_NUM_FIELD, out fieldObj))
{
seqNum = Convert.ToInt64(fieldObj);
}
if (envelope.TryGetValue(ProtocolConstants.REQ_ID_FIELD, out fieldObj))
{
reqId = Convert.ToInt64(fieldObj);
}
if (envelope.TryGetValue(ProtocolConstants.STORE_MSG_ID_FIELD, out fieldObj))
{
msgId = Convert.ToInt64(fieldObj);
}
if (envelope.TryGetValue(ProtocolConstants.DELIVERY_COUNT_FIELD, out fieldObj))
{
deliveryCount = Convert.ToInt64(fieldObj);
}
if (envelope.TryGetValue(ProtocolConstants.REPLY_TO_FIELD, out fieldObj))
{
replyTo = Convert.ToString(fieldObj);
}
// The message will be processed if there is no sequence number or
// if the sequence number is greater than the last received sequence number.
BasicSubscription subscription = null;
bool exists = subscriptions.TryGetValue(to, out subscription);
if (exists && subscription != null)
{
if (seqNum == 0 || seqNum > subscription.LastSeqNum)
{
IMessage message = new JSONMessage(body);
((JSONMessage)message).SeqNum = seqNum;
((JSONMessage)message).SubId = to;
((JSONMessage)message).ReplyTo = replyTo;
((JSONMessage)message).ReqId = reqId;
((JSONMessage)message).StoreMessageId = msgId;
((JSONMessage)message).DeliveryCount = deliveryCount;
try
{
subscription.getListener().OnMessages(new IMessage[] { message });
}
catch (Exception)
{
// catch and discard exceptions thrown by the listener
}
// track the last received sequence number
if (subscription.AutoAck && seqNum != 0)
{
subscription.LastSeqNum = seqNum;
}
}
// auto-acknowledge the message
if (subscription.AutoAck && seqNum != 0)
{
acknowledge(seqNum, subscription.Id);
}
}
}
}
