/// <summary>
/// Initialize binding defaults
/// </summary>
static ReplyDispatcher()
{
using (ISchedulerHelper helper = SchedulerHelperFactory.GetInstance())
{
binding = helper.GetVertexServiceBinding();
}
}
/// <summary>
/// Constructor used by the Graph Manager
/// </summary>
/// <param name="m_schedulerHelper"></param>
/// <param name="computeNode"></param>
public Dispatcher(ISchedulerHelper schedulerHelper, VertexComputeNode computeNode)
{
m_schedulerHelper = schedulerHelper;
m_taskId = computeNode.instanceId;
m_nodeName = computeNode.ComputeNode;
m_backendBinding = m_schedulerHelper.GetVertexServiceBinding();
m_endpointAddress = m_schedulerHelper.GetVertexServiceBaseAddress(m_nodeName, m_taskId) + Constants.vertexServiceName;
SafeOpenConnection();
}
public bool Start(string listenUri, ISchedulerHelper schedulerHelper)
{
DryadLogger.LogMethodEntry(listenUri);
Uri baseAddress = new Uri(listenUri);
try
{
NetTcpBinding binding = schedulerHelper.GetVertexServiceBinding();
selfHost = null;
// Retry opening the service port if address is already in use
int maxRetryCount = 20; // Results in retrying for ~1 min
for (int retryCount = 0; retryCount < maxRetryCount; retryCount++)
{
try
{
//Step 1 of the hosting procedure: Create ServiceHost
selfHost = new ServiceHost(callbackService, baseAddress);
//Step 2 of the hosting procedure: Add service endpoints.
ServiceEndpoint vertexEndpoint = selfHost.AddServiceEndpoint(typeof(IDryadVertexCallback), binding, Constants.vertexCallbackServiceName);
ServiceThrottlingBehavior stb = new ServiceThrottlingBehavior();
stb.MaxConcurrentCalls = Constants.MaxConnections;
stb.MaxConcurrentSessions = Constants.MaxConnections;
selfHost.Description.Behaviors.Add(stb);
//Step 3 of hosting procedure : Add a security manager
selfHost.Authorization.ServiceAuthorizationManager = new DryadVertexServiceAuthorizationManager();
// Step 4 of the hosting procedure: Start the service.
selfHost.Open();
break;
}
catch (AddressAlreadyInUseException)
{
if (selfHost != null)
{
selfHost.Abort();
selfHost = null;
}
// If this is the last try, dont sleep. Just rethrow exception to exit.
if (retryCount < maxRetryCount - 1)
{
DryadLogger.LogInformation("Start Vertex Callback Service", "Address already in use. Retrying...");
System.Threading.Thread.Sleep(3000);
}
else
{
throw;
}
}
}
DryadLogger.LogInformation("Start Vertex Callback Service", "Service Host started successfully");
return(true);
}
catch (CommunicationException ce)
{
DryadLogger.LogCritical(0, ce, "Failed to start vertex callback service");
try
{
if (selfHost != null)
{
selfHost.Abort();
}
}
catch
{
}
return(false);
}
}
/// <summary>
/// Constructor used by the Graph Manager
/// </summary>
/// <param name="m_schedulerHelper"></param>
/// <param name="computeNode"></param>
public Dispatcher(ISchedulerHelper schedulerHelper, VertexComputeNode computeNode)
{
m_schedulerHelper = schedulerHelper;
m_taskId = computeNode.instanceId;
m_nodeName = computeNode.ComputeNode;
m_backendBinding = m_schedulerHelper.GetVertexServiceBinding();
m_endpointAddress = m_schedulerHelper.GetVertexServiceBaseAddress(m_nodeName, m_taskId) + Constants.vertexServiceName;
SafeOpenConnection();
}
public bool Start(string listenUri, ISchedulerHelper schedulerHelper)
{
DryadLogger.LogMethodEntry(listenUri);
Uri baseAddress = new Uri(listenUri);
try
{
NetTcpBinding binding = schedulerHelper.GetVertexServiceBinding();
selfHost = null;
// Retry opening the service port if address is already in use
int maxRetryCount = 20; // Results in retrying for ~1 min
for (int retryCount = 0; retryCount < maxRetryCount; retryCount++)
{
try
{
//Step 1 of the hosting procedure: Create ServiceHost
selfHost = new ServiceHost(callbackService, baseAddress);
//Step 2 of the hosting procedure: Add service endpoints.
ServiceEndpoint vertexEndpoint = selfHost.AddServiceEndpoint(typeof(IDryadVertexCallback), binding, Constants.vertexCallbackServiceName);
ServiceThrottlingBehavior stb = new ServiceThrottlingBehavior();
stb.MaxConcurrentCalls = Constants.MaxConnections;
stb.MaxConcurrentSessions = Constants.MaxConnections;
selfHost.Description.Behaviors.Add(stb);
//Step 3 of hosting procedure : Add a security manager
selfHost.Authorization.ServiceAuthorizationManager = new DryadVertexServiceAuthorizationManager();
// Step 4 of the hosting procedure: Start the service.
selfHost.Open();
break;
}
catch (AddressAlreadyInUseException)
{
if (selfHost != null)
{
selfHost.Abort();
selfHost = null;
}
// If this is the last try, dont sleep. Just rethrow exception to exit.
if (retryCount < maxRetryCount - 1)
{
DryadLogger.LogInformation("Start Vertex Callback Service", "Address already in use. Retrying...");
System.Threading.Thread.Sleep(3000);
}
else
{
throw;
}
}
}
DryadLogger.LogInformation("Start Vertex Callback Service", "Service Host started successfully");
return true;
}
catch (CommunicationException ce)
{
DryadLogger.LogCritical(0, ce, "Failed to start vertex callback service");
try
{
if (selfHost != null)
{
selfHost.Abort();
}
}
catch
{
}
return false;
}
}
