private static Session OpenSessionAndLogin(ServerInfo hostInfo)
{
//Session session = new Session(string.Format("https://{0}", hostInfo.Hostname));
Session session = SessionFactory.CreateSession(hostInfo.Hostname);
string version = Helper.APIVersionString(API_Version.API_2_5);
string originator = "Conversion";
try
{
session.login_with_password(hostInfo.Username, hostInfo.Password, version, originator);
}
catch (Failure failure)
{
if (failure.ErrorDescription[0] != "HOST_IS_SLAVE")
{
throw;
}
//session = new Session(string.Format("https://{0}", failure.ErrorDescription[1]));
session = SessionFactory.CreateSession(failure.ErrorDescription[1]);
session.login_with_password(hostInfo.Username, hostInfo.Password, version, originator);
return(session);
}
return(session);
}
public void updateHealthCheckSettings(bool success, DateTime time, string uploadUuid = "")
{
Session session = new Session(connection.Hostname, 80);
session.login_with_password(connection.Username, connection.Password, Helper.APIVersionString(API_Version.LATEST), Session.UserAgent);
connection.LoadCache(session);
// Round-trip format time
DateTime rtime = DateTime.SpecifyKind(time, DateTimeKind.Utc);
string stime = HealthCheckSettings.DateTimeToString(rtime);
// record upload_uuid,
// release the lock,
// set the time of LAST_SUCCESSFUL_UPLOAD or LAST_FAILED_UPLOAD
Dictionary <string, string> config = Pool.get_health_check_config(session, connection.Cache.Pools[0].opaque_ref);
config[HealthCheckSettings.UPLOAD_LOCK] = "";
if (success)
{
config[HealthCheckSettings.LAST_SUCCESSFUL_UPLOAD] = stime;
config[HealthCheckSettings.UPLOAD_UUID] = uploadUuid;
// reset the NEW_UPLOAD_REQUEST field, if the current successful upload was started after the request
DateTime newUploadRequestTime;
if (HealthCheckSettings.TryParseStringToDateTime(config[HealthCheckSettings.NEW_UPLOAD_REQUEST], out newUploadRequestTime))
{
if (rtime > newUploadRequestTime)
{
config[HealthCheckSettings.NEW_UPLOAD_REQUEST] = "";
}
}
}
else
{
config[HealthCheckSettings.LAST_FAILED_UPLOAD] = stime;
}
Pool.set_health_check_config(session, connection.Cache.Pools[0].opaque_ref, config);
if (session != null)
{
session.logout();
}
session = null;
}
public void runUpload(System.Threading.CancellationToken serviceStop)
{
DateTime startTime = DateTime.UtcNow;
string uploadToken = "";
Session session = new Session(connection.Hostname, 80);
session.APIVersion = API_Version.LATEST;
try
{
session.login_with_password(connection.Username, connection.Password, Helper.APIVersionString(API_Version.LATEST), Session.UserAgent);
connection.LoadCache(session);
var pool = Helpers.GetPoolOfOne(connection);
if (pool != null)
{
try
{
string opaqueref = Secret.get_by_uuid(session, pool.HealthCheckSettings.UploadTokenSecretUuid);
uploadToken = Secret.get_value(session, opaqueref);
}
catch (Exception e)
{
log.Error("Exception getting the upload token from the xapi secret", e);
uploadToken = null;
}
}
if (string.IsNullOrEmpty(uploadToken))
{
if (session != null)
{
session.logout();
}
session = null;
log.ErrorFormat("The upload token is not retrieved for {0}", connection.Hostname);
updateHealthCheckSettings(false, startTime);
server.task = null;
ServerListHelper.instance.UpdateServerInfo(server);
return;
}
}
catch (Exception e)
{
if (session != null)
{
session.logout();
}
session = null;
log.Error(e, e);
updateHealthCheckSettings(false, startTime);
server.task = null;
ServerListHelper.instance.UpdateServerInfo(server);
return;
}
try
{
CancellationTokenSource cts = new CancellationTokenSource();
Func <string> upload = delegate()
{
try
{
return(bundleUpload(connection, session, uploadToken, cts.Token));
}
catch (OperationCanceledException)
{
return("");
}
};
System.Threading.Tasks.Task <string> task = new System.Threading.Tasks.Task <string>(upload);
task.Start();
// Check if the task runs to completion before timeout.
for (int i = 0; i < TIMEOUT; i += INTERVAL)
{
// If the task finishes, set HealthCheckSettings accordingly.
if (task.IsCompleted || task.IsCanceled || task.IsFaulted)
{
if (task.Status == System.Threading.Tasks.TaskStatus.RanToCompletion)
{
string upload_uuid = task.Result;
if (!string.IsNullOrEmpty(upload_uuid))
{
updateHealthCheckSettings(true, startTime, upload_uuid);
}
else
{
updateHealthCheckSettings(false, startTime);
}
}
else
{
updateHealthCheckSettings(false, startTime);
}
server.task = null;
ServerListHelper.instance.UpdateServerInfo(server);
return;
}
// If the main thread (XenServerHealthCheckService) stops,
// set the cancel token to notify the working task to return.
if (serviceStop.IsCancellationRequested)
{
cts.Cancel();
updateHealthCheckSettings(false, startTime);
task.Wait();
server.task = null;
ServerListHelper.instance.UpdateServerInfo(server);
return;
}
System.Threading.Thread.Sleep(INTERVAL);
}
// The task has run for 24h, cancel the task and mark it as a failure upload.
cts.Cancel();
updateHealthCheckSettings(false, startTime);
task.Wait();
server.task = null;
ServerListHelper.instance.UpdateServerInfo(server);
return;
}
catch (Exception e)
{
if (session != null)
{
session.logout();
}
session = null;
log.Error(e, e);
server.task = null;
ServerListHelper.instance.UpdateServerInfo(server);
}
}
public void OnTimer(object sender, System.Timers.ElapsedEventArgs args)
{
log.Info("XenServer Health Check Service start to refresh uploading tasks");
//We need to check if CIS can be accessed in current enviroment
List <ServerInfo> servers = ServerListHelper.instance.GetServerList();
foreach (ServerInfo server in servers)
{
if (server.task != null && (!server.task.IsCompleted || !server.task.IsCanceled || !server.task.IsFaulted))
{
continue;
}
bool needReconnect = false;
log.InfoFormat("Check server {0} with user {1}", server.HostName, server.UserName);
Session session = new Session(server.HostName, 80);
session.APIVersion = API_Version.LATEST;
try
{
session.login_with_password(server.UserName, server.Password, Helper.APIVersionString(API_Version.LATEST), Session.UserAgent);
}
catch (Exception exn)
{
if (exn is Failure && ((Failure)exn).ErrorDescription[0] == Failure.HOST_IS_SLAVE)
{
string masterName = ((Failure)exn).ErrorDescription[1];
if (ServerListHelper.instance.UpdateServerCredential(server, masterName))
{
log.InfoFormat("Refresh credential to master {0} need refresh connection", masterName);
server.HostName = masterName;
needReconnect = true;
}
else
{
log.InfoFormat("Remove credential since it is the slave of master {0}", masterName);
if (session != null)
{
session.logout();
}
log.Error(exn, exn);
continue;
}
}
else
{
if (session != null)
{
session.logout();
}
log.Error(exn, exn);
continue;
}
}
try
{
if (needReconnect)
{
if (session != null)
{
session.logout();
}
log.InfoFormat("Reconnect to master {0}", server.HostName);
session = new Session(server.HostName, 80);
session.APIVersion = API_Version.LATEST;
session.login_with_password(server.UserName, server.Password, Helper.APIVersionString(API_Version.LATEST), Session.UserAgent);
}
XenConnection connectionInfo = new XenConnection();
connectionInfo.Hostname = server.HostName;
connectionInfo.Username = server.UserName;
connectionInfo.Password = server.Password;
connectionInfo.LoadCache(session);
if (RequestUploadTask.Request(connectionInfo, session) || RequestUploadTask.OnDemandRequest(connectionInfo, session))
{
// Create a task to collect server status report and upload to CIS server
log.InfoFormat("Start to upload server status report for XenServer {0}", connectionInfo.Hostname);
XenServerHealthCheckBundleUpload upload = new XenServerHealthCheckBundleUpload(connectionInfo);
Action uploadAction = delegate()
{
upload.runUpload(cts.Token);
};
System.Threading.Tasks.Task task = new System.Threading.Tasks.Task(uploadAction);
task.Start();
server.task = task;
ServerListHelper.instance.UpdateServerInfo(server);
}
session.logout();
session = null;
}
catch (Exception exn)
{
if (session != null)
{
session.logout();
}
log.Error(exn, exn);
}
}
}
