/// <summary>
/// Prepares broker launcher client for heart beat with timeout specific
/// </summary>
/// <param name="brokerLauncherRef">indicating the reference to broker launcher</param>
/// <param name="timeout">indicating the timeout</param>
private void PrepareBrokerLauncherClient(ref IBrokerLauncher brokerLauncherRef, int timeoutMilliseconds)
{
if (brokerLauncherRef == null)
{
lock (this.lockCreateChannel)
{
if (brokerLauncherRef == null)
{
brokerLauncherRef = new BrokerLauncherClient(this.uri, this.info, this.binding);
}
}
}
if (brokerLauncherRef is ClientBase <IBrokerLauncher> )
{
ClientBase <IBrokerLauncher> broker = (ClientBase <IBrokerLauncher>)brokerLauncherRef;
if (timeoutMilliseconds == Timeout.Infinite)
{
broker.InnerChannel.OperationTimeout = TimeSpan.MaxValue;
}
else
{
broker.InnerChannel.OperationTimeout = SessionBase.GetTimeout(DateTime.Now.AddMilliseconds(timeoutMilliseconds));
}
}
}
/// <summary>
/// Attach the broker
/// </summary>
/// <param name="startInfo">session start info</param>
/// <param name="sessionInfo">session info</param>
/// <param name="durable">whether durable session</param>
/// <param name="timeoutMilliseconds">attach timeout</param>
/// <param name="binding">indicating the binding</param>
/// <returns>session object</returns>
public override async Task <SessionBase> AttachBroker(SessionStartInfo startInfo, SessionInfoContract sessionInfo, bool durable, int timeoutMilliseconds, Binding binding)
{
DateTime targetTimeout;
Utility.ThrowIfNull(sessionInfo, "sessionInfo");
Utility.ThrowIfInvalidTimeout(timeoutMilliseconds, "timeoutMilliseconds");
if (timeoutMilliseconds == Timeout.Infinite)
{
targetTimeout = DateTime.MaxValue;
}
else
{
targetTimeout = DateTime.Now.AddMilliseconds(timeoutMilliseconds);
}
SessionBase.TraceSource.TraceEvent(TraceEventType.Information, 0, "[Session:{0}] Start to attach broker...", sessionInfo.Id);
SessionInfo info = Utility.BuildSessionInfoFromDataContract(sessionInfo); // resourceProvider.GetResourceInfo(attachInfo, SessionBase.GetTimeout(targetTimeout));
SessionAttachInfo attachInfo = new SessionAttachInfo(startInfo.Headnode, sessionInfo.Id);
attachInfo.TransportScheme = startInfo.TransportScheme;
attachInfo.Username = startInfo.Username;
attachInfo.InternalPassword = startInfo.InternalPassword;
IBrokerFactory brokerFactory = BuildBrokerFactory(attachInfo, durable);
try
{
return(await brokerFactory.AttachBroker(attachInfo, info, SessionBase.GetTimeout(targetTimeout), binding).ConfigureAwait(false));
}
finally
{
IDisposable disposableObject = brokerFactory as IDisposable;
if (disposableObject != null)
{
disposableObject.Dispose();
}
}
}
/// <summary>
/// Create session
/// </summary>
/// <param name="startInfo">indicating session start information</param>
/// <param name="durable">indicating a value whether a durable session is to be created</param>
/// <param name="timeoutMilliseconds">indicating the timeout</param>
/// <param name="binding">indicating the binding</param>
/// <returns>returns session instance</returns>
public override async Task <SessionBase> CreateSession(SessionStartInfo startInfo, bool durable, int timeoutMilliseconds, Binding binding)
{
SessionBase.CheckSessionStartInfo(startInfo);
DateTime targetTimeout = DateTime.Now.AddMilliseconds(Constant.DefaultCreateSessionTimeout);
// if following env variable is set, we will launch the service host in an admin job.
string adminJobEnv = Environment.GetEnvironmentVariable(SessionBase.EnvVarNameForAdminJob, EnvironmentVariableTarget.Process);
if (!string.IsNullOrEmpty(adminJobEnv) && adminJobEnv.Equals("1", StringComparison.InvariantCultureIgnoreCase))
{
startInfo.AdminJobForHostInDiag = true;
}
SessionAllocateInfoContract sessionAllocateInfo = null;
CredType typeOfExpectedCred = CredType.None;
IResourceProvider resourceProvider = null;
IList <string> newDataClients = null;
try
{
int retry = 0;
bool askForCredential = false;
// allow users to try credential at most MaxRetryCount times
int askForCredentialTimes = 0;
while (Utility.CanRetry(retry, askForCredential, askForCredentialTimes))
{
retry++;
try
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Verbose, 0, "[Session:Unknown] Start to create session for on-premise cluster. IsDurable = {0}, RetryCount = {1}, AskForCredentialTimes = {2}, TimeCost = {3}", durable, retry, askForCredentialTimes, targetTimeout);
Stopwatch watch = new Stopwatch();
watch.Start();
if (startInfo.UseAad)
{
// Authentication handled by AADUtil
}
else if (SoaHelper.IsSchedulerOnAzure(startInfo.Headnode) || SoaHelper.IsSchedulerOnIaaS(startInfo.Headnode) || (startInfo.TransportScheme & TransportScheme.Http) == TransportScheme.Http || (startInfo.TransportScheme & TransportScheme.NetHttp) == TransportScheme.NetHttp)
{
askForCredential = HpcSessionCredUtil.RetrieveCredentialOnAzure(startInfo);
if (askForCredential)
{
askForCredentialTimes++;
}
}
else
{
askForCredential = await HpcSessionCredUtil.RetrieveCredentialOnPremise(startInfo, typeOfExpectedCred, binding).ConfigureAwait(false);
if (askForCredential)
{
askForCredentialTimes++;
}
HpcSessionCredUtil.CheckCredential(startInfo);
}
resourceProvider = BuildResourceProvider(startInfo, durable, binding);
if (((newDataClients == null) || (newDataClients.Count == 0)) &&
(startInfo.DependFiles != null) && (startInfo.DependFiles.Count > 0))
{
// Upload the data files required for this session
newDataClients = this.UploadAzureFiles(startInfo);
}
watch.Stop();
// re-calculate the timeout to exclude the timespan for getting credential
targetTimeout = targetTimeout.AddMilliseconds(watch.ElapsedMilliseconds);
sessionAllocateInfo = await resourceProvider.AllocateResource(startInfo, durable, SessionBase.GetTimeout(targetTimeout)).ConfigureAwait(false);
SessionBase.TraceSource.TraceEvent(TraceEventType.Verbose, 0, "[Session:{0}] Successfully allocated resource.", sessionAllocateInfo.Id);
if (sessionAllocateInfo.BrokerLauncherEpr != null)
{
if (SoaHelper.IsSchedulerOnIaaS(startInfo.Headnode))
{
string suffix = SoaHelper.GetSuffixFromHeadNodeEpr(startInfo.Headnode);
for (int i = 0; i < sessionAllocateInfo.BrokerLauncherEpr.Length; i++)
{
sessionAllocateInfo.BrokerLauncherEpr[i] = SoaHelper.UpdateEprWithCloudServiceName(sessionAllocateInfo.BrokerLauncherEpr[i], suffix);
}
}
HpcSessionCredUtil.SaveCrendential(startInfo, binding);
SessionBase.TraceSource.TraceInformation("Get the EPR list from headnode. number of eprs={0}", sessionAllocateInfo.BrokerLauncherEpr.Length);
break;
}
}
catch (EndpointNotFoundException e)
{
this.CleanUpDataClients(startInfo, newDataClients);
SessionBase.TraceSource.TraceEvent(TraceEventType.Error, 0, "[Session:Unknown] EndpointNotFoundException occured while allocating resource: {0}", e);
SessionBase.HandleEndpointNotFoundException(startInfo.Headnode);
}
catch (AuthenticationException e)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:Unknown] AuthenticationException occured while allocating resource: {0}", e);
startInfo.ClearCredential();
SessionBase.PurgeCredential(startInfo);
if (Utility.CanRetry(retry, askForCredential, askForCredentialTimes))
{
if (typeOfExpectedCred == CredType.None)
{
typeOfExpectedCred = await CredUtil.GetCredTypeFromClusterAsync(startInfo, binding).ConfigureAwait(false);
}
if (resourceProvider is IDisposable)
{
((IDisposable)resourceProvider).Dispose();
}
continue;
}
else
{
if (sessionAllocateInfo != null)
{
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
}
throw;
}
}
catch (MessageSecurityException e)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:Unknown] MessageSecurityException occured while allocating resource: {0}", e);
startInfo.ClearCredential();
SessionBase.PurgeCredential(startInfo);
if (Utility.CanRetry(retry, askForCredential, askForCredentialTimes))
{
if (typeOfExpectedCred == CredType.None)
{
typeOfExpectedCred = await CredUtil.GetCredTypeFromClusterAsync(startInfo, binding).ConfigureAwait(false);
}
if (resourceProvider is IDisposable)
{
((IDisposable)resourceProvider).Dispose();
}
continue;
}
else
{
if (sessionAllocateInfo != null)
{
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
}
throw;
}
}
catch (FaultException <SessionFault> ex)
{
typeOfExpectedCred = Utility.CanRetry(retry, askForCredential, askForCredentialTimes) ?
CredUtil.GetCredTypeFromFaultCode(ex.Detail.Code) : CredType.None;
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:Unknown] Fault exception occured while allocating resource. FaultCode = {0}. Exception = {1}", ex.Detail.Code, ex.ToString());
if (typeOfExpectedCred == CredType.None)
{
this.CleanUpDataClients(startInfo, newDataClients);
if (sessionAllocateInfo != null)
{
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
}
throw Utility.TranslateFaultException(ex);
}
else
{
startInfo.ClearCredential();
if (resourceProvider is IDisposable)
{
((IDisposable)resourceProvider).Dispose();
}
continue;
}
}
catch (CommunicationException e)
{
this.CleanUpDataClients(startInfo, newDataClients);
if (sessionAllocateInfo != null)
{
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
}
throw new SessionException(SOAFaultCode.ConnectSessionLauncherFailure, SR.ConnectSessionLauncherFailure, e);
}
catch (TimeoutException e)
{
SessionBase.TraceSource.TraceInformation(e.ToString());
this.CleanUpDataClients(startInfo, newDataClients);
if (sessionAllocateInfo != null)
{
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
}
throw new TimeoutException(string.Format(SR.ConnectSessionLauncherTimeout, Constant.DefaultCreateSessionTimeout), e);
}
catch (Exception e)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:Unknown] Exception occured while allocating resource: {0}", e);
this.CleanUpDataClients(startInfo, newDataClients);
if (sessionAllocateInfo != null)
{
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
}
throw;
}
if (sessionAllocateInfo.BrokerLauncherEpr == null && startInfo.UseSessionPool)
{
// If the session launcher picks a session from the pool, it returns the seesion id.
// eprs is null at this case. Try to attach to the session.
try
{
if (sessionAllocateInfo.SessionInfo == null)
{
SessionBase.TraceSource.TraceInformation("[Session:{0}] Attempt to attach to session {0} which is part of the session pool.", sessionAllocateInfo.Id);
return(await AttachSession(new SessionAttachInfo(startInfo.Headnode, sessionAllocateInfo.Id), durable, timeoutMilliseconds, binding).ConfigureAwait(false));
}
else
{
SessionBase.TraceSource.TraceInformation("[Session:{0}] Attempt to attach to broker of the session {0} which is part of the session pool.", sessionAllocateInfo.Id);
return(await AttachBroker(startInfo, sessionAllocateInfo.SessionInfo, durable, timeoutMilliseconds, binding).ConfigureAwait(false));
}
}
catch (Exception e)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Error, 0, "Failed to attach to the session {0}. {1}", sessionAllocateInfo.Id, e);
if (Utility.CanRetry(retry, askForCredential, askForCredentialTimes))
{
if (resourceProvider is IDisposable)
{
((IDisposable)resourceProvider).Dispose();
}
continue;
}
else
{
throw;
}
}
}
}
IBrokerFactory brokerFactory = BuildBrokerFactory(startInfo, durable);
try
{
return(await brokerFactory.CreateBroker(startInfo, sessionAllocateInfo.Id, targetTimeout, sessionAllocateInfo.BrokerLauncherEpr, binding).ConfigureAwait(false));
}
catch
{
// Free resource if failed to create broker or create session
this.CleanUpDataClients(startInfo, newDataClients);
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
throw;
}
finally
{
if (brokerFactory is IDisposable)
{
((IDisposable)brokerFactory).Dispose();
}
}
}
finally
{
if (resourceProvider != null)
{
if (resourceProvider is IDisposable)
{
((IDisposable)resourceProvider).Dispose();
}
}
}
}
/// <summary>
/// Attach to an existing session
/// </summary>
/// <param name="attachInfo">indicating the session attach information</param>
/// <param name="durable">indicating a value whether a durable session is to be created</param>
/// <param name="timeoutMilliseconds">indicating the timeout</param>
/// <param name="binding">indicating the binding</param>
/// <returns>returns session instance</returns>
public override async Task <SessionBase> AttachSession(SessionAttachInfo attachInfo, bool durable, int timeoutMilliseconds, Binding binding)
{
Debug.Assert(attachInfo is SessionAttachInfo, "[OnPremiseSessionFactory].AttachSession: attachInfo's type must be SessionAttachInfo.");
DateTime targetTimeout;
Utility.ThrowIfNull(attachInfo, "attachInfo");
Utility.ThrowIfInvalidTimeout(timeoutMilliseconds, "timeoutMilliseconds");
if (timeoutMilliseconds == Timeout.Infinite)
{
targetTimeout = DateTime.MaxValue;
}
else
{
targetTimeout = DateTime.Now.AddMilliseconds(timeoutMilliseconds);
}
SessionBase.TraceSource.TraceEvent(TraceEventType.Information, 0, "[Session:{0}] Start to attach session...", attachInfo.SessionId);
IResourceProvider resourceProvider = null;
SessionInfo info = null;
CredType typeOfExpectedCred = CredType.None;
try
{
int retry = 0;
bool askForCredential = false;
// allow users to try credential at most MaxRetryCount times
int askForCredentialTimes = 0;
while (Utility.CanRetry(retry, askForCredential, askForCredentialTimes))
{
retry++;
try
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Verbose, 0, "[Session:{0}] Start to attach session.", attachInfo.SessionId);
Stopwatch watch = new Stopwatch();
watch.Start();
if (attachInfo.UseAad)
{
// Authentication handled by AADUtil
}
else if (SoaHelper.IsSchedulerOnAzure(attachInfo.Headnode) || SoaHelper.IsSchedulerOnIaaS(attachInfo.Headnode) || (attachInfo.TransportScheme & TransportScheme.Http) == TransportScheme.Http)
{
askForCredential = HpcSessionCredUtil.RetrieveCredentialOnAzure(attachInfo);
if (askForCredential)
{
askForCredentialTimes++;
}
}
else
{
askForCredential = await HpcSessionCredUtil.RetrieveCredentialOnPremise(attachInfo, typeOfExpectedCred, binding).ConfigureAwait(false);
if (askForCredential)
{
askForCredentialTimes++;
}
HpcSessionCredUtil.CheckCredential(attachInfo);
HpcSessionCredUtil.CheckCredential(attachInfo);
}
resourceProvider = BuildResourceProvider(attachInfo, durable, binding);
watch.Stop();
// re-calculate the timeout to exclude the timespan for getting credential
try
{
targetTimeout = targetTimeout.AddMilliseconds(watch.ElapsedMilliseconds);
}
catch (ArgumentOutOfRangeException)
{
}
info = await resourceProvider.GetResourceInfo(attachInfo, SessionBase.GetTimeout(targetTimeout)).ConfigureAwait(false);
SessionBase.TraceSource.TraceEvent(TraceEventType.Verbose, 0, "[Session:{0}] Successfully got resource info. BrokerLauncherEpr = {1}", attachInfo.SessionId, info.BrokerLauncherEpr);
// If the session is an inprocess broker session, info.UseInprocessBroker will be set
// to true by HpcSession service. Need to set attachInfo.UseInprocessBroker to true
// in order to build correct broker factory instance.
if (info.UseInprocessBroker)
{
attachInfo.UseInprocessBroker = true;
}
// If debug mode is enabled, need to set info.UseInprocessBroker to true in order to
// build correct broker factory instance.
if (attachInfo.DebugModeEnabled)
{
info.UseInprocessBroker = true;
}
if (SoaHelper.IsSchedulerOnIaaS(attachInfo.Headnode))
{
string suffix = SoaHelper.GetSuffixFromHeadNodeEpr(attachInfo.Headnode);
info.BrokerLauncherEpr = SoaHelper.UpdateEprWithCloudServiceName(info.BrokerLauncherEpr, suffix);
if (info.BrokerEpr != null)
{
SoaHelper.UpdateEprWithCloudServiceName(info.BrokerEpr, suffix);
}
if (info.ControllerEpr != null)
{
SoaHelper.UpdateEprWithCloudServiceName(info.ControllerEpr, suffix);
}
if (info.ResponseEpr != null)
{
SoaHelper.UpdateEprWithCloudServiceName(info.ResponseEpr, suffix);
}
}
HpcSessionCredUtil.SaveCrendential(attachInfo);
break;
}
catch (SessionException)
{
throw;
}
catch (EndpointNotFoundException)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Error, 0, "[Session:{0}] EndpointNotFoundException occured while getting resource info.", attachInfo.SessionId);
SessionBase.HandleEndpointNotFoundException(attachInfo.Headnode);
}
catch (AuthenticationException e)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:{0}] AuthenticationException occured while attaching session: {1}", attachInfo.SessionId, e);
attachInfo.ClearCredential();
SessionBase.PurgeCredential(attachInfo);
if (Utility.CanRetry(retry, askForCredential, askForCredentialTimes))
{
if (typeOfExpectedCred == CredType.None)
{
typeOfExpectedCred = await CredUtil.GetCredTypeFromClusterAsync(attachInfo, binding).ConfigureAwait(false);
}
if (resourceProvider is IDisposable)
{
((IDisposable)resourceProvider).Dispose();
}
continue;
}
else
{
throw;
}
}
catch (MessageSecurityException e)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:{0}] MessageSecurityException occured while attaching session: {1}", attachInfo.SessionId, e);
attachInfo.ClearCredential();
SessionBase.PurgeCredential(attachInfo);
if (Utility.CanRetry(retry, askForCredential, askForCredentialTimes))
{
if (typeOfExpectedCred == CredType.None)
{
typeOfExpectedCred = await CredUtil.GetCredTypeFromClusterAsync(attachInfo, binding).ConfigureAwait(false);
}
if (resourceProvider is IDisposable)
{
((IDisposable)resourceProvider).Dispose();
}
continue;
}
else
{
throw;
}
}
catch (FaultException <SessionFault> ex)
{
typeOfExpectedCred = Utility.CanRetry(retry, askForCredential, askForCredentialTimes) ?
CredUtil.GetCredTypeFromFaultCode(ex.Detail.Code) : CredType.None;
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:{0}] Fault exception occured while allocating resource. FaultCode = {1}", attachInfo.SessionId, ex.Detail.Code);
if (typeOfExpectedCred == CredType.None)
{
throw Utility.TranslateFaultException(ex);
}
else
{
attachInfo.ClearCredential();
if (resourceProvider is IDisposable)
{
((IDisposable)resourceProvider).Dispose();
}
continue;
}
}
catch (CommunicationException e)
{
throw new SessionException(SOAFaultCode.ConnectSessionLauncherFailure, SR.ConnectSessionLauncherFailure, e);
}
catch (TimeoutException e)
{
throw new TimeoutException(string.Format(SR.ConnectSessionLauncherTimeout, Constant.DefaultCreateSessionTimeout), e);
}
catch (Exception e)
{
throw new SessionException(SOAFaultCode.UnknownError, e.ToString());
}
} // while
}
finally
{
IDisposable disposableObject = resourceProvider as IDisposable;
if (disposableObject != null)
{
disposableObject.Dispose();
}
}
if (String.IsNullOrEmpty(info.BrokerLauncherEpr) && !info.UseInprocessBroker)
{
if ((info.JobState &
(JobState.Configuring
| JobState.ExternalValidation
| JobState.Queued
| JobState.Running
| JobState.Submitted
| JobState.Validating)) != 0)
{
throw new SessionException(string.Format(SR.AttachConfiguringSession, attachInfo.SessionId));
}
else
{
throw new SessionException(string.Format(SR.AttachNoBrokerSession, attachInfo.SessionId));
}
}
IBrokerFactory brokerFactory = BuildBrokerFactory(attachInfo, durable);
try
{
return(await brokerFactory.AttachBroker(attachInfo, info, SessionBase.GetTimeout(targetTimeout), binding).ConfigureAwait(false));
}
finally
{
IDisposable disposableObject = brokerFactory as IDisposable;
if (disposableObject != null)
{
disposableObject.Dispose();
}
}
}
/// <summary>
/// Create broker
/// </summary>
/// <param name="startInfo">indicating the session start information</param>
/// <param name="sessionId">indicating the session id</param>
/// <param name="targetTimeout">indicating the target timeout</param>
/// <param name="eprs">indicating the broker epr list</param>
/// <param name="epr">output selected epr</param>
/// <param name="binding">indicting the binding</param>
/// <returns>returns the session information</returns>
public async Task <SessionBase> CreateBroker(SessionStartInfo startInfo, string sessionId, DateTime targetTimeout, string[] eprs, Binding binding)
{
Exception innerException = null;
IEnumerable <string> endpoints = eprs;
if (startInfo.UseAzureQueue.GetValueOrDefault() && !endpoints.Contains(SessionInternalConstants.BrokerConnectionStringToken))
{
endpoints = endpoints.Concat(new[] { SessionInternalConstants.BrokerConnectionStringToken });
}
foreach (string epr in endpoints)
{
TimeSpan timeout = SessionBase.GetTimeout(targetTimeout);
IBrokerLauncher brokerLauncher = null;
try
{
SessionBase.TraceSource.TraceInformation("[Session:{0}] Try to create broker... BrokerLauncherEpr = {1}", sessionId, epr);
void RenewBrokerLauncherClient()
{
if (epr == SessionInternalConstants.BrokerConnectionStringToken)
{
brokerLauncher = new BrokerLauncherCloudQueueClient(startInfo.BrokerLauncherStorageConnectionString);
}
else
{
var client = new BrokerLauncherClient(new Uri(epr), startInfo, binding);
client.InnerChannel.OperationTimeout = timeout;
brokerLauncher = client;
}
}
RenewBrokerLauncherClient();
BrokerInitializationResult result = null;
int retry = 20;
while (retry > 0)
{
try
{
if (this.durable)
{
result = brokerLauncher.CreateDurable(startInfo.Data, sessionId);
}
else
{
result = brokerLauncher.Create(startInfo.Data, sessionId);
}
break;
}
catch (Exception ex)
{
if (retry <= 0)
{
throw;
}
retry--;
Debug.WriteLine($"Waiting for Broker Launcher running. Detail: {ex.Message}");
await Task.Delay(TimeSpan.FromSeconds(10)).ConfigureAwait(false);
RenewBrokerLauncherClient();
}
}
Debug.Assert(result != null);
SessionBase.TraceSource.TraceInformation("[Session:{0}] Succesfully created broker.", sessionId);
SessionInfo info = SessionBase.BuildSessionInfo(result, this.durable, sessionId, epr, startInfo.Data.ServiceVersion, startInfo);
if (this.durable)
{
#if net40
return(new DurableSession(info, startInfo.Headnode, binding));
#else
return(new DurableSession(info, startInfo.Headnode, binding));
#endif
}
else
{
var session = new V3Session(info, startInfo.Headnode, startInfo.ShareSession, binding);
if (startInfo.UseAzureStorage)
{
session.BrokerLauncherClient = brokerLauncher;
}
return(session);
}
}
catch (FaultException <SessionFault> e)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:{0}] Fault exception occured while creating broker: {1}. FaultCode = {2}", sessionId, e, e.Detail.Code);
switch (e.Detail.Code)
{
// Continue if current broker node is being taken offline
case SOAFaultCode.Broker_BrokerIsOffline:
continue;
}
throw Utility.TranslateFaultException(e);
}
catch (TimeoutException te)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Error, 0, "[Session:{0}] TimeoutException occured while creating broker: {1}", sessionId, te);
// don't continue when we timeout
throw new TimeoutException(string.Format(SR.ConectBrokerLauncherTimeout, epr, Constant.DefaultCreateSessionTimeout), te);
}
catch (CommunicationException ex)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:{0}] Failed to create broker: {1}", sessionId, ex);
innerException = ex;
SessionBase.TraceSource.TraceInformation(ex.ToString());
continue;
}
finally
{
var client = brokerLauncher as BrokerLauncherClient;
if (client != null)
{
Utility.SafeCloseCommunicateObject(client);
}
}
}
SessionBase.TraceSource.TraceEvent(TraceEventType.Error, 0, "[Session:{0}] Failed to create broker after trying all available eprs.", sessionId);
throw new SessionException(SR.NoBrokerNodeFound, innerException);
}
public override async Task <SessionBase> CreateSession(SessionStartInfo startInfo, bool durable, int timeoutMilliseconds, Binding binding)
{
SessionBase.CheckSessionStartInfo(startInfo);
DateTime targetTimeout = DateTime.Now.AddMilliseconds(Constant.DefaultCreateSessionTimeout);
SessionAllocateInfoContract sessionAllocateInfo = null;
IResourceProvider resourceProvider = null;
try
{
try
{
resourceProvider = this.BuildResourceProvider(startInfo, binding);
// re-calculate the timeout to exclude the timespan for getting credential
sessionAllocateInfo = await resourceProvider.AllocateResource(startInfo, durable, SessionBase.GetTimeout(targetTimeout)).ConfigureAwait(false);
SessionBase.TraceSource.TraceEvent(TraceEventType.Verbose, 0, "[Session:{0}] Successfully allocated resource.", sessionAllocateInfo.Id);
if (sessionAllocateInfo.BrokerLauncherEpr != null &&
sessionAllocateInfo.BrokerLauncherEpr.Count() == 1 &&
sessionAllocateInfo.BrokerLauncherEpr[0] == SessionInternalConstants.BrokerConnectionStringToken)
{
if (!startInfo.UseAzureStorage)
{
SessionBase.TraceSource.TraceEvent(
TraceEventType.Error,
0,
"[Session:{0}] Server side only supports communication via AzureStorageQueue while client doesn't specify UseAzureQueue property and not using AzureStorage scheme.",
sessionAllocateInfo.Id);
throw new InvalidOperationException("Server side only supports communication via AzureStorageQueue while client doesn't specify UseAzureQueue property.");
}
}
}
catch (Exception e)
{
SessionBase.TraceSource.TraceEvent(TraceEventType.Warning, 0, "[Session:Unknown] Exception occured while allocating resource: {0}", e);
if (sessionAllocateInfo != null)
{
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
}
throw;
}
IBrokerFactory brokerFactory = BuildBrokerFactory(startInfo, durable);
try
{
return(await brokerFactory.CreateBroker(startInfo, sessionAllocateInfo.Id, targetTimeout, sessionAllocateInfo.BrokerLauncherEpr, binding).ConfigureAwait(false));
}
catch
{
// Free resource if failed to create broker or create session
await resourceProvider.FreeResource(startInfo, sessionAllocateInfo.Id).ConfigureAwait(false);
throw;
}
finally
{
if (brokerFactory != null && brokerFactory is IDisposable disposable)
{
disposable.Dispose();
}
}
}
finally
{
if (resourceProvider != null && resourceProvider is IDisposable disposable)
{
disposable.Dispose();
}
}
}
