public BlockingCollection <List <IMessage> > getQueue(string HATopic)
{
string topic = getTopicForHATopic(HATopic);
SubscribeInfo subscribeInfo = null;
if (!subscribeInfos_.TryGetValue(topic, out subscribeInfo))
{
System.Console.Out.WriteLine("Subscription with topic " + topic + " doesn't exist. ");
return(null);
}
return(subscribeInfo.getQueue());
}
protected BlockingCollection <List <IMessage> > subscribeInternal(string host, int port, string tableName, string actionName, MessageHandler handler, long offset, bool reconnect, IVector filter, bool createSubInfo)
{
string topic = "";
IEntity re;
BlockingCollection <List <IMessage> > queue;
DBConnection dbConn = new DBConnection();
dbConn.connect(host, port);
try
{
string localIP = listeningHost_;
if (localIP == null || localIP.Equals(String.Empty))
{
localIP = dbConn.LocalAddress;
}
List <IEntity> @params = new List <IEntity>
{
new BasicString(tableName),
new BasicString(actionName)
};
re = dbConn.run("getSubscriptionTopic", @params);
topic = ((BasicAnyVector)re).getEntity(0).getString();
@params.Clear();
@params.Add(new BasicString(localIP));
@params.Add(new BasicInt(listeningPort_));
@params.Add(new BasicString(tableName));
@params.Add(new BasicString(actionName));
@params.Add(new BasicLong(offset));
if (filter != null)
{
@params.Add(filter);
}
re = dbConn.run("publishTable", @params);
lock (subscribeInfos_)
{
if (createSubInfo)
{
Site[] sites;
if (re is BasicAnyVector)
{
BasicStringVector HASiteStrings = (BasicStringVector)((BasicAnyVector)re).getEntity(1);
int HASiteNum = HASiteStrings.rows();
sites = new Site[HASiteNum];
for (int i = 0; i < HASiteNum; ++i)
{
String HASite = HASiteStrings.get(i).getString();
String[] HASiteHostAndPort = HASite.Split(':');
String HASiteHost = HASiteHostAndPort[0];
int HASitePort = int.Parse(HASiteHostAndPort[1]);
String HASiteAlias = HASiteHostAndPort[2];
sites[i] = new Site(HASiteHost, HASitePort);
String HATopic = getTopic(HASiteHost, HASitePort, HASiteAlias, tableName, actionName);
HATopicToTrueTopic_[HATopic] = topic;
}
}
else
{
sites = new Site[] { new Site(host, port) };
lock (HATopicToTrueTopic_)
{
HATopicToTrueTopic_[topic] = topic;
}
}
SubscribeInfo subscribeInfo = new SubscribeInfo(DateTime.Now, new BlockingCollection <List <IMessage> >(), sites, topic, offset, reconnect, filter, handler, tableName, actionName);
subscribeInfo.setConnectState(ConnectState.REQUEST);
queue = subscribeInfo.getQueue();
if (subscribeInfos_.ContainsKey(topic))
{
throw new Exception("Subscription with topic " + topic + " exist. ");
}
else
{
subscribeInfos_.TryAdd(topic, subscribeInfo);
}
Console.WriteLine("Successfully subscribed table " + topic);
}
else
{
SubscribeInfo subscribeInfo = null;
if (!subscribeInfos_.TryGetValue(topic, out subscribeInfo))
{
throw new Exception("Subscription with topic " + topic + " doesn't exist. ");
}
lock (subscribeInfo)
{
if (subscribeInfo.getConnectState() == ConnectState.RECEIVED_SCHEMA)
{
throw new Exception("Subscription with topic " + topic + " the connection has been created. ");
}
subscribeInfo.setConnectState(ConnectState.REQUEST);
}
queue = subscribeInfo.getQueue();
}
}
}
finally
{
dbConn.close();
}
return(queue);
}
