public void ThreadSafeSetAndGet()
{
//Set up store
if (System.IO.Directory.Exists("store"))
{
System.IO.Directory.Delete("store", true);
}
SessionID sessionId = new SessionID("FIX.4.2", "SENDERCOMP", "TARGETCOMP");
Dictionary config = new Dictionary();
config.SetString(SessionSettings.CONNECTION_TYPE, "initiator");
config.SetString(SessionSettings.FILE_STORE_PATH, "store");
SessionSettings settings = new SessionSettings();
settings.Set(sessionId, config);
FileStoreFactory factory = new FileStoreFactory(settings);
FileStore store = (FileStore)factory.Create(sessionId);
NullLog log = new NullLog();
//Set up sessionstate
SessionState state = new SessionState(log, 1)
{
MessageStore = store
};
Hashtable errorsTable = Hashtable.Synchronized(new Hashtable()); //used in more than 1 thread at a time
Hashtable setTable = new Hashtable(1000); //only used in 1 thread at a time
Hashtable getTable = new Hashtable(1000); //only used in 1 thread at a time
//Synchronously populate 1000 messages
for (int i = 1; i < 1000; i++)
{
string msg = "msg" + i;
state.Set(i, msg);
setTable[i] = msg;
}
//Simulate background sending of messages that populate into the store
AutoResetEvent setEvent = new AutoResetEvent(false);
ThreadPool.QueueUserWorkItem(delegate(object stateObject) {
AutoResetEvent internalSetEvent = (AutoResetEvent)((object[])stateObject)[0];
SessionState internalState = (SessionState)((object[])stateObject)[1];
for (int i = 1001; i < 2000; i++)
{
try {
internalState.Set(i, "msg" + i);
}
catch (System.IO.IOException ex) {
errorsTable[ex.Message] = ex;
}
}
internalSetEvent.Set();
}
, new object[] { setEvent, state });
//Simulate background reading of messages from the store - like is done in a resend request answer
AutoResetEvent getEvent = new AutoResetEvent(false);
ThreadPool.QueueUserWorkItem(delegate(object stateObject){
AutoResetEvent internalGetEvent = (AutoResetEvent)((object[])stateObject)[0];
SessionState internalState = (SessionState)((object[])stateObject)[1];
for (int i = 1; i < 1000; i++)
{
try {
List <string> lst = new List <string>(1);
internalState.Get(i, i, lst);
if (lst.Count == 0)
{
getTable[i] = "nothing read";
}
else
{
getTable[i] = lst[0];
}
}
catch (System.IO.IOException ex) {
errorsTable[ex.Message] = ex;
}
}
internalGetEvent.Set();
}
, new object[] { getEvent, state });
//wait till done and assert results
Assert.True(setEvent.WaitOne(10000), "Get or Set hung/timed out during concurrent usage");
Assert.True(getEvent.WaitOne(10000), "Get or Set hung/timed out during concurrent usage");
Assert.AreEqual(setTable, getTable, "Garbled data read in concurrent set and get (like between resendrequest and send)");
Assert.AreEqual(errorsTable.Count, 0, "IOException occured in concurrent set and get (like between resendrequest and send)");
//Tear down filestore
state.Dispose();
store.Dispose();
}