private CcyPairRate GetCcyPairRate(CcyPair request)
{
CcyPairRate response;
switch (request.CcyPairName)
{
case "EURUSD":
response = new CcyPairRate
{
CcyPairName = "EURUSD",
Rate = 1.15 + 0.05 * _random.NextDouble()
};
break;
case "EURGBP":
response = new CcyPairRate
{
CcyPairName = "EURGBP",
Rate = 0.87 + 0.05 * _random.NextDouble()
};
break;
default:
throw new ArgumentOutOfRangeException($"Unknown currency pair: {request.CcyPairName}");
}
return(response);
}
private async Task <CcyPairRate> GetRateAsync(CcyPair request, MethodCallContext context)
{
Console.WriteLine("Received request: {0}", request);
CcyPairRate response;
switch (request.CcyPairName)
{
case "EURUSD":
response = new CcyPairRate
{
CcyPairName = "EURUSD",
Rate = 1.15 + 0.05 * _random.NextDouble()
};
break;
case "EURGBP":
response = new CcyPairRate
{
CcyPairName = "EURGBP",
Rate = 0.87 + 0.05 * _random.NextDouble()
};
break;
default:
throw new ArgumentOutOfRangeException($"Unknown currency pair: {request.CcyPairName}");
}
Console.WriteLine("Sending response: {0}", response);
return(response);
}
// Implementation of unary method GetRate
public Task <CcyPairRate> GetRate(CcyPair request, MethodCallContext context)
{
Console.WriteLine("Received request: {0}", request);
var response = GetCcyPairRate(request);
Console.WriteLine("Sending response: {0}", response);
return(Task.FromResult(response));
}
public async Task MainAsync(string[] args)
{
// Read broker working dir specified either in the first
// command line argument or in environment variable, or just use current working directory
var brokerLocation = args.Length > 0
? args[0]
: Environment.GetEnvironmentVariable("PLEXUS_BROKER_WORKING_DIR") ?? Directory.GetCurrentDirectory();
Console.WriteLine("Connecting to broker {0}.", brokerLocation);
// Defining client options
var clientOptions = new ClientOptionsBuilder()
.WithDefaultConfiguration(brokerLocation)
.WithApplicationId("vendorB.fx.CcyPairRateViewer")
.Build();
// Connecting
var client = ClientFactory.Instance.Create(clientOptions);
await client.ConnectAsync();
Console.WriteLine("Connected.");
while (true)
{
Console.Write("Enter currency pair (e.g. \"EURUSD\") or press Enter to exit: ");
var ccyPairName = Console.ReadLine();
if (string.IsNullOrEmpty(ccyPairName))
{
break;
}
// Requesting ccy pair rate from another app
var request = new CcyPair {
CcyPairName = ccyPairName
};
var response = await client.Call(GetRateMethod, request);
Console.WriteLine("Response received: " + response);
}
Console.WriteLine("Disconnecting.");
await client.DisconnectAsync();
Console.WriteLine("Disconnected.");
}
public async Task MainAsync(string[] args)
{
// Read broker working dir specified either in the first
// command line argument or in environment variable,
// or just use current working directory.
var brokerWorkingDir = args.Length > 0
? args[0]
: EnvironmentHelper.GetBrokerWorkingDir() ?? Directory.GetCurrentDirectory();
// Creating client and connecting to broker
Console.WriteLine("Connecting to broker {0}", brokerWorkingDir);
var client = new CcyPairRateViewerClient(setup => setup.WithBrokerWorkingDir(brokerWorkingDir));
await client.ConnectAsync();
Console.WriteLine("Connected");
while (true)
{
Console.Write("Enter currency pair (e.g. \"EURUSD\") or press Enter to exit: ");
var ccyPairName = Console.ReadLine();
if (string.IsNullOrEmpty(ccyPairName))
{
break;
}
// Requesting ccy pair rate from another app
var request = new CcyPair {
CcyPairName = ccyPairName
};
var response = await client.CcyPairRateService.GetRate(request);
Console.WriteLine("Response received: " + response);
}
Console.WriteLine("Disconnecting");
await client.DisconnectAsync();
Console.WriteLine("Disconnected");
}
// Implementation of server streaming method GetRateStream
public async Task GetRateStream(
CcyPair request,
IWritableChannel <CcyPairRate> responseStream,
MethodCallContext context)
{
Console.WriteLine("Received subscription: {0}", request);
try
{
do
{
var response = GetCcyPairRate(request);
Console.WriteLine("Sending response: {0}", response);
await responseStream.TryWriteAsync(response, context.CancellationToken);
await Task.Delay(_random.Next(1000, 3000), context.CancellationToken);
} while (!context.CancellationToken.IsCancellationRequested);
}
catch (OperationCanceledException) when(context.CancellationToken.IsCancellationRequested)
{
// Ignoring cancellation exception
}
Console.WriteLine("Subscription completed");
}
