// Majordomo Protocol client example
// Uses the mdcli API to hide all MDP aspects
public static void MDClient(string[] args)
{
bool verbose = (args.Any(e => e.ToLower().Equals("-v") ||
e.ToLower().Equals("--verbose")));
Console.WriteLine("Verbose: {0}", verbose);
CancellationTokenSource cts = new CancellationTokenSource();
Console.CancelKeyPress += (s, ea) =>
{
ea.Cancel = true;
cts.Cancel();
};
using (MajordomoClient session = new MajordomoClient("tcp://127.0.0.1:5555", verbose))
{
int count;
for (count = 0; count < 100000; count++)
{
ZMessage request = new ZMessage();
request.Prepend(new ZFrame("Hello world"));
using (ZMessage reply = session.Send("echo", request, cts))
if (reply == null)
{
break;
} // Interrupt or failure
}
Console.WriteLine("{0} requests/replies processed\n", count);
}
}
// Majordomo Protocol client example
// Uses the mdcli API to hide all MDP aspects
public static void MDClient2(string[] args)
{
CancellationTokenSource cts = new CancellationTokenSource();
Console.CancelKeyPress += (s, ea) =>
{
ea.Cancel = true;
cts.Cancel();
};
using (MajordomoClient session = new MajordomoClient("tcp://127.0.0.1:5555", Verbose))
{
int count;
for (count = 0; count < 100000 && !cts.IsCancellationRequested; count++)
{
ZMessage request = new ZMessage();
request.Prepend(new ZFrame("Hello world"));
session.Send("echo", request, cts);
}
for (count = 0; count < 100000 && !cts.IsCancellationRequested; count++)
{
using (ZMessage reply = session.Recv(cts))
if (reply == null)
{
break;
} // Interrupt or failure
}
Console.WriteLine("{0} replies received\n", count);
}
}
// Calls a TSP service
// Returns response if successful (status code 200 OK), else NULL
static ZMessage TIClient_ServiceCall(MajordomoClient session, string service, ZMessage request, CancellationTokenSource cts)
{
using (var reply = session.Send(service, request, cts))
{
if (reply != null)
{
var status = reply.PopString();
if (status.Equals("200"))
{
return(reply.Duplicate());
}
else if (status.Equals("400"))
{
"E: client fatal error, aborting".DumpString();
cts.Cancel();
}
else if (status.Equals("500"))
{
"E: server fatal error, aborting".DumpString();
cts.Cancel();
}
}
else
{
cts.Cancel(); // Interrupted or failed
}
}
return(null);
}
// MMI echo query example
public static void MMIEcho(string[] args)
{
CancellationTokenSource cancellor = new CancellationTokenSource();
Console.CancelKeyPress += (s, ea) =>
{
ea.Cancel = true;
cancellor.Cancel();
};
using (MajordomoClient session = new MajordomoClient("tcp://127.0.0.1:5555", Verbose))
{
ZMessage request = new ZMessage();
request.Add(new ZFrame("echo"));
ZMessage reply = session.Send("mmi.service", request, cancellor);
if (reply != null)
{
var replycode = reply[0].ToString();
"Loopup echo service: {0}\n".DumpString(replycode);
reply.Dispose();
}
else
{
"E: no response from broker, make sure it's running\n".DumpString();
}
}
}
// MMI echo query example
public static void MMIEcho(string[] args)
{
bool verbose = (args.Any(e => e.ToLower().Equals("-v") ||
e.ToLower().Equals("--verbose")));
Console.WriteLine("Verbose: {0}", verbose);
CancellationTokenSource cancellor = new CancellationTokenSource();
Console.CancelKeyPress += (s, ea) =>
{
ea.Cancel = true;
cancellor.Cancel();
};
using (MajordomoClient session = new MajordomoClient("tcp://localhost:5555", verbose))
{
ZMessage request = new ZMessage();
request.Add(new ZFrame("echo"));
ZMessage reply = session.Send("mmi.service", request, cancellor);
if (reply != null)
{
var replycode = reply[0].ToString();
"Loopup echo service: {0}\n".DumpString(replycode);
reply.Dispose();
}
else
{
"E: no response from broker, make sure it's running\n".DumpString();
}
}
}
public static void TIClient(string[] args)
{
CancellationTokenSource cancellor = new CancellationTokenSource();
Console.CancelKeyPress += (s, ea) =>
{
ea.Cancel = true;
cancellor.Cancel();
};
using (MajordomoClient session = new MajordomoClient("tcp://127.0.0.1:5555", Verbose))
{
// 1. Send 'echo' request to Titanic
ZMessage request = new ZMessage();
request.Add(new ZFrame("echo"));
request.Add(new ZFrame("Hello World"));
Guid uuid = Guid.Empty;
using (var reply = TIClient_ServiceCall(session, "titanic.request", request, cancellor))
{
if (reply != null)
{
uuid = Guid.Parse(reply.PopString());
"I: request UUID {0}".DumpString(uuid);
}
}
// 2. Wait until we get a reply
while (!cancellor.IsCancellationRequested)
{
Thread.Sleep(100);
request.Dispose();
request = new ZMessage();
request.Add(new ZFrame(uuid.ToString()));
var reply = TIClient_ServiceCall(session, "titanic.reply", request, cancellor);
if (reply != null)
{
string replystring = reply.Last().ToString();
"Reply: {0}\n".DumpString(replystring);
reply.Dispose();
// 3. Close Request
request.Dispose();
request = new ZMessage();
request.Add(new ZFrame(uuid.ToString()));
reply = TIClient_ServiceCall(session, "titanic.close", request, cancellor);
reply.Dispose();
break;
}
else
{
"I: no reply yet, trying again...\n".DumpString();
Thread.Sleep(5000); // try again in 5 seconds
}
}
}
}
// .split try to call a service
// Here, we first check if the requested MDP service is defined or not,
// using a MMI lookup to the Majordomo broker. If the service exists,
// we send a request and wait for a reply using the conventional MDP
// client API. This is not meant to be fast, just very simple:
static bool Titanic_ServiceSuccess(Guid uuid, CancellationTokenSource cts)
{
// Load request message, service will be first frame
string fn = TitanicCommon.RequestFilename(uuid);
FileStream fs;
if (!fn.TryFileOpenRead(out fs))
{
// If the client already close request, treat as successful
return(true);
}
fs.Dispose();
ZMessage request = fn.DeserializeFromXml <ZMessage>();
var service = request.Pop();
string servicename = service.ToString();
bool res = false;
// Create MDP client session with short timeout
using (var client = new MajordomoClient("tcp://127.0.0.1:5555", false))
{
client.Set_Timeout(1000); // 1sec
client.Set_Retries(1); // only 1 retry
// Use MMI protocol to check if service is available
ZMessage mmirequest = new ZMessage {
service
};
bool service_ok;
using (var mmireply = client.Send("mmi.service", mmirequest, cts))
service_ok = (mmireply != null &&
mmireply.First().ToString().Equals("200"));
res = false;
if (service_ok)
{
using (ZMessage reply = client.Send(servicename, request, cts))
if (reply != null)
{
fn = TitanicCommon.ReplyFilename(uuid);
reply.SerializeToXml(fn);
res = true;
}
else
{
request.Dispose();
}
}
}
return(res);
}
