private ClientMetadata lookUpOnOtherServers(string username)
{
IConsistencyService[] server = new IConsistencyService[_servers.Count];
for (int i = 0; i < _servers.Count; i++)
{
server[i] = getOtherServers(_servers[i]);
}
callback returnedValueOnLookup1 = new callback();
callback.RemoteLookupDelegate RemoteDelforLookup1 = new callback.RemoteLookupDelegate(() => server[0].ReadClientMetadata(username));
AsyncCallback RemoteCallbackOnLookup1 = new AsyncCallback(returnedValueOnLookup1.OurLookupAsyncCallBack);
IAsyncResult RemArForLookup1 = RemoteDelforLookup1.BeginInvoke(RemoteCallbackOnLookup1, null);
callback.RemoteLookupDelegate RemoteDelforLookup2 = new callback.RemoteLookupDelegate(() => server[1].ReadClientMetadata(username));
IAsyncResult RemArForLookup2 = RemoteDelforLookup2.BeginInvoke(RemoteCallbackOnLookup1, null);
bool dataEqual;
ClientMetadata myData = action.ReadClientMetadata(username);
Log.Show(_username, "[READ METADATA] Waiting for one server to return");
returnedValueOnLookup1.waiter.WaitOne();
//returnedValueOnLookup1.waiter.Reset();
//Compare the received value
ClientMetadata DataFromServer1 = returnedValueOnLookup1.data;
dataEqual = CompareValues(myData, DataFromServer1);
if (dataEqual)
{
Log.Show(_username, "[READ METADATA] First retreived value matches");
return myData;
}
else
{
Log.Show(_username, "[READ METADATA] Waiting for second server to return");
returnedValueOnLookup1.waiter.WaitOne();
//returnedValueOnLookup1.waiter.Reset();
Log.Show(_username, "[READ METADATA] Second server returned");
ClientMetadata DataFromServer2 = returnedValueOnLookup1.data;
dataEqual = CompareValues(myData, DataFromServer2);
if (dataEqual)
{
Log.Show(_username, "[READ METADATA] Second retreived value matches");
return myData;
}
else
{
dataEqual = CompareValues(DataFromServer1, DataFromServer1);
if (dataEqual)
{
Log.Show(_username, "[READ METADATA] I have an outdated value. Other two fetched values match");
action.WriteClientMetadata(returnedValueOnLookup1.data);
Log.Show(_username, "[READ METADATA] Updated my value to one of the received values");
return returnedValueOnLookup1.data;
}
else
{
Log.Show(_username, "[READ METADATA]ERROR - ERROR");
return null;
}
}
}
}
private ClientMetadata lookUpOnOtherServers(string username)
{
IConsistencyService[] server = new IConsistencyService[_servers.Count];
for (int i = 0; i < _servers.Count; i++)
{
server[i] = getOtherServers(_servers[i]);
}
callback returnedValueOnLookup1 = new callback();
callback.RemoteLookupDelegate RemoteDelforLookup1 = new callback.RemoteLookupDelegate(() => server[0].ReadClientMetadata(username));
AsyncCallback RemoteCallbackOnLookup1 = new AsyncCallback(returnedValueOnLookup1.OurLookupAsyncCallBack);
IAsyncResult RemArForLookup1 = RemoteDelforLookup1.BeginInvoke(RemoteCallbackOnLookup1, null);
callback.RemoteLookupDelegate RemoteDelforLookup2 = new callback.RemoteLookupDelegate(() => server[1].ReadClientMetadata(username));
IAsyncResult RemArForLookup2 = RemoteDelforLookup2.BeginInvoke(RemoteCallbackOnLookup1, null);
bool dataEqual;
ClientMetadata myData = action.ReadClientMetadata(username);
Log.Show(_username, "[READ METADATA] Waiting for one server to return");
returnedValueOnLookup1.waiter.WaitOne();
//returnedValueOnLookup1.waiter.Reset();
//Compare the received value
ClientMetadata DataFromServer1 = returnedValueOnLookup1.data;
dataEqual = CompareValues(myData, DataFromServer1);
if (dataEqual)
{
Log.Show(_username, "[READ METADATA] First retreived value matches");
return(myData);
}
else
{
Log.Show(_username, "[READ METADATA] Waiting for second server to return");
returnedValueOnLookup1.waiter.WaitOne();
//returnedValueOnLookup1.waiter.Reset();
Log.Show(_username, "[READ METADATA] Second server returned");
ClientMetadata DataFromServer2 = returnedValueOnLookup1.data;
dataEqual = CompareValues(myData, DataFromServer2);
if (dataEqual)
{
Log.Show(_username, "[READ METADATA] Second retreived value matches");
return(myData);
}
else
{
dataEqual = CompareValues(DataFromServer1, DataFromServer1);
if (dataEqual)
{
Log.Show(_username, "[READ METADATA] I have an outdated value. Other two fetched values match");
action.WriteClientMetadata(returnedValueOnLookup1.data);
Log.Show(_username, "[READ METADATA] Updated my value to one of the received values");
return(returnedValueOnLookup1.data);
}
else
{
Log.Show(_username, "[READ METADATA]ERROR - ERROR");
return(null);
}
}
}
}
