/// <summary>
/// This function will create subscriptions for all the symbols in the array list.
/// </summary>
private void createSubscriptions()
{
// There must be at least 1 symbol
if (m_symbols.Count < 1)
{
throw new ApplicationException("There are no symbols to subscribe to.");
}
ListenerSubscriptionCallback subscriptionCallback = new ListenerSubscriptionCallback(m_dictionary, m_iterator, m_quietness, m_symbols.Count);
// Enumerate all the symbol names and create a subscription for each one
foreach (string symbol in m_symbols)
{
MamaSubscription subscription = new MamaSubscription();
// Set the service level depending on whether we need a snapshot subscription or not
if (m_snapshot)
{
subscription.setServiceLevel(mamaServiceLevel.MAMA_SERVICE_LEVEL_SNAPSHOT);
}
else
{
subscription.setServiceLevel(mamaServiceLevel.MAMA_SERVICE_LEVEL_REAL_TIME);
}
// Complete the remaining properties
subscription.setSubscriptionType(mamaSubscriptionType.MAMA_SUBSC_TYPE_NORMAL);
subscription.setTimeout(10);
subscription.setRetries(3);
subscription.setRequiresInitial(true);
/* Determine the queue to use, if there are multiple threads running then the next queue in the
* group will be acquired.
*/
MamaQueue queue = m_defaultQueue;
if (m_queueGroup != null)
{
queue = m_queueGroup.getNextQueue();
}
subscription.create(queue, subscriptionCallback, m_source, symbol);
// Add the subscription to the array list so that they can all be destroyed later on
m_subscriptions.Add(subscription);
}
}
static void Main(string[] args)
{
// Parse the command line options to override defaults
String middlewareName = "qpid";
String transportName = "sub";
String sourceName = "OM";
String symbolName = null;
String dictionaryFile = "/opt/openmama/data/dictionaries/data.dict";
bool requiresDictionary = true;
bool requiresInitial = true;
if (args.Length == 0)
{
usageAndExit();
}
for (int i = 0; i < args.Length; i++)
{
switch (args[i])
{
case "-B":
requiresDictionary = false;
break;
case "-d":
dictionaryFile = args[++i];
break;
case "-I":
requiresInitial = false;
break;
case "-m":
middlewareName = args[++i];
break;
case "-s":
symbolName = args[++i];
break;
case "-S":
sourceName = args[++i];
break;
case "-t":
transportName = args[++i];
break;
case "-v":
Mama.enableLogging(MamaLogLevel.MAMA_LOG_LEVEL_FINEST);
break;
default:
usageAndExit();
break;
}
}
// Symbol name is mandatory here, so error if it's null
if (symbolName == null)
{
usageAndExit();
}
// Load the requested OpenMAMA middleware bridge (and default payload too)
MamaBridge bridge = Mama.loadBridge(middlewareName);
// Time to initialize OpenMAMA's underlying bridges with an "open"
Mama.open();
// Get default event queue from the bridge for testing
MamaQueue queue = Mama.getDefaultEventQueue(bridge);
// Set up the required transport on the specified bridge
MamaTransport transport = new MamaTransport();
transport.create(transportName, bridge);
// Set up the data dictionary
MamaDictionary dictionary = null;
if (requiresDictionary)
{
dictionary = new MamaDictionary();
dictionary.create(dictionaryFile);
}
// Set up the OpenMAMA source (symbol namespace)
MamaSource source = new MamaSource();
source.symbolNamespace = sourceName;
source.transport = transport;
// Set up the event handlers for OpenMAMA
SubscriptionEventHandler eventHandler = new SubscriptionEventHandler();
eventHandler.mDictionary = dictionary;
// Set up the OpenMAMA Subscription (interest in a topic)
MamaSubscription subscription = new MamaSubscription();
subscription.setRequiresInitial(requiresInitial);
subscription.create(queue, eventHandler, source, symbolName);
// Kick off OpenMAMA now (blocking call, non-blocking call also available)
Mama.start(bridge);
// Clean up connection on termination
Mama.close();
}
