/// <summary>
/// This factory class creates three different kinds of client. This method gathers the code of client creation
/// and adds the retry logic. The retry can avoid transient connection error especially when connect to Azure.
/// </summary>
/// <param name="clientType">the type of the client</param>
/// <returns>the client</returns>
private ICommunicationObject CreateClientWithRetry(ClientType clientType)
{
ICommunicationObject client = null;
Exception exception = null;
try
{
exception = null;
switch (clientType)
{
case ClientType.SendRequest:
if (this.brokerClientFactory == null)
{
ClientCredentials clientCredentials = new ClientCredentials();
clientCredentials.UserName.UserName = this.info.Username;
clientCredentials.UserName.Password = this.info.InternalPassword;
BindingParameterCollection bindingParams = new BindingParameterCollection();
bindingParams.Add(clientCredentials);
this.brokerClientFactory = this.binding.BuildChannelFactory <IRequestChannel>(bindingParams);
this.brokerClientFactory.Open();
}
client = this.brokerClientFactory.CreateChannel(GenerateEndpointAddress(this.info.BrokerEpr, this.scheme, this.info.Secure, this.info.IsAadOrLocalUser));
break;
case ClientType.Controller:
BrokerControllerClient controllerClient = new BrokerControllerClient(
this.binding,
GenerateEndpointAddress(this.info.ControllerEpr, this.scheme, this.info.Secure, this.info.IsAadOrLocalUser));
controllerClient.ClientCredentials.UserName.UserName = this.info.Username;
controllerClient.ClientCredentials.UserName.Password = this.info.InternalPassword;
client = controllerClient;
break;
default:
throw new NotSupportedException();
}
client.Open();
}
catch (Exception e)
{
if (this.brokerClientFactory != null)
{
try
{
this.brokerClientFactory.Abort();
this.brokerClientFactory = null;
}
catch
{
// abandon the factory, swallow the exception
}
}
if (client != null)
{
try
{
client.Abort();
client = null;
}
catch
{
// abandon the channel, swallow the exception
}
}
exception = e;
}
if (exception != null)
{
throw exception;
}
return(client);
}
/// <summary>
/// This factory class creates three different kinds of client. This method gathers the code of client creation
/// and adds the retry logic. The retry can avoid transient connection error especially when connect to Azure.
/// </summary>
/// <param name="clientType">the type of the client</param>
/// <returns>the client</returns>
private ICommunicationObject CreateClientWithRetry(ClientType clientType)
{
ICommunicationObject client = null;
Exception exception = null;
try
{
exception = null;
switch (clientType)
{
case ClientType.SendRequest:
if (this.brokerClientFactory == null)
{
BindingParameterCollection bindingParms = new BindingParameterCollection();
ClientCredentials clientCredentials = new ClientCredentials();
if (this.info.UseAad)
{
// Authentication will be taken care of by adding message header to request
}
else if (this.SetClientCredential(clientCredentials))
{
bindingParms.Add(clientCredentials);
}
this.brokerClientFactory = this.binding.BuildChannelFactory <IDuplexSessionChannel>(bindingParms);
this.brokerClientFactory.Open();
}
client = this.brokerClientFactory.CreateChannel(GenerateEndpointAddress(this.info.BrokerEpr, this.scheme, this.info.Secure, this.info.IsAadOrLocalUser));
break;
case ClientType.GetResponse:
BrokerResponseServiceClient responseClient = new BrokerResponseServiceClient(
this.binding,
GenerateEndpointAddress(this.info.ResponseEpr, this.scheme, this.info.Secure, this.info.IsAadOrLocalUser),
new InstanceContext(this.ResponseCallback));
this.SetClientCredential(responseClient);
client = responseClient;
break;
case ClientType.Controller:
BrokerControllerClient controllerClient = new BrokerControllerClient(
this.binding,
GenerateEndpointAddress(this.info.ControllerEpr, this.scheme, this.info.Secure, this.info.IsAadOrLocalUser));
this.SetClientCredential(controllerClient);
client = controllerClient;
break;
default:
throw new NotSupportedException();
}
client.Open();
}
catch (Exception e)
{
if (this.brokerClientFactory != null)
{
try
{
this.brokerClientFactory.Abort();
this.brokerClientFactory = null;
}
catch
{
// abandon the factory, swallow the exception
}
}
if (client != null)
{
try
{
client.Abort();
client = null;
}
catch
{
// abandon the channel, swallow the exception
}
}
exception = e;
}
if (exception != null)
{
throw exception;
}
return(client);
}
