public bool TryGetOrCreateResourceStore(string tenantId, out Task <DocumentDatabase> database)
{
if (Locks.Contains(DisposingLock))
{
throw new ObjectDisposedException("DatabaseLandlord", "Server is shutting down, can't access any databases");
}
if (Locks.Contains(tenantId))
{
throw new InvalidOperationException("Database '" + tenantId + "' is currently locked and cannot be accessed.");
}
ManualResetEvent cleanupLock;
if (Cleanups.TryGetValue(tenantId, out cleanupLock) && cleanupLock.WaitOne(MaxSecondsForTaskToWaitForDatabaseToLoad) == false)
{
throw new InvalidOperationException(string.Format("Database '{0}' is currently being restarted and cannot be accessed. We already waited {1} seconds.", tenantId, MaxSecondsForTaskToWaitForDatabaseToLoad));
}
if (ResourcesStoresCache.TryGetValue(tenantId, out database))
{
if (database.IsFaulted || database.IsCanceled)
{
ResourcesStoresCache.TryRemove(tenantId, out database);
DateTime time;
LastRecentlyUsed.TryRemove(tenantId, out time);
// and now we will try creating it again
}
else
{
return(true);
}
}
var config = CreateTenantConfiguration(tenantId);
if (config == null)
{
return(false);
}
database = ResourcesStoresCache.GetOrAdd(tenantId, __ => Task.Factory.StartNew(() =>
{
var transportState = ResourseTransportStates.GetOrAdd(tenantId, s => new TransportState());
AssertLicenseParameters(config);
var documentDatabase = new DocumentDatabase(config, transportState);
documentDatabase.SpinBackgroundWorkers(false);
documentDatabase.Disposing += DocumentDatabaseDisposingStarted;
documentDatabase.DisposingEnded += DocumentDatabaseDisposingEnded;
documentDatabase.StorageInaccessible += UnloadDatabaseOnStorageInaccessible;
// register only DB that has incremental backup set.
documentDatabase.OnBackupComplete += OnDatabaseBackupCompleted;
// if we have a very long init process, make sure that we reset the last idle time for this db.
LastRecentlyUsed.AddOrUpdate(tenantId, SystemTime.UtcNow, (_, time) => SystemTime.UtcNow);
return(documentDatabase);
}).ContinueWith(task =>
{
if (task.Status == TaskStatus.Faulted) // this observes the task exception
{
Logger.WarnException("Failed to create database " + tenantId, task.Exception);
}
return(task);
}).Unwrap());
if (database.IsFaulted && database.Exception != null)
{
// if we are here, there is an error, and if there is an error, we need to clear it from the
// resource store cache so we can try to reload it.
// Note that we return the faulted task anyway, because we need the user to look at the error
if (database.Exception.Data.Contains("Raven/KeepInResourceStore") == false)
{
Task <DocumentDatabase> val;
ResourcesStoresCache.TryRemove(tenantId, out val);
}
}
return(true);
}
public bool TryGetOrCreateResourceStore(string tenantId, out Task <CounterStorage> counter)
{
if (Locks.Contains(DisposingLock))
{
throw new ObjectDisposedException("CountersLandlord", "Server is shutting down, can't access any counters");
}
if (Enabled == false)
{
throw new InvalidOperationException("Counters are an experimental feature that is not enabled");
}
if (Locks.Contains(tenantId))
{
throw new InvalidOperationException("Counters '" + tenantId + "' is currently locked and cannot be accessed");
}
ManualResetEvent cleanupLock;
if (Cleanups.TryGetValue(tenantId, out cleanupLock) && cleanupLock.WaitOne(MaxSecondsForTaskToWaitForDatabaseToLoad * 1000) == false)
{
throw new InvalidOperationException(string.Format("Counters '{0}' are currently being restarted and cannot be accessed. We already waited {1} seconds.", tenantId, MaxSecondsForTaskToWaitForDatabaseToLoad));
}
if (ResourcesStoresCache.TryGetValue(tenantId, out counter))
{
if (counter.IsFaulted || counter.IsCanceled)
{
ResourcesStoresCache.TryRemove(tenantId, out counter);
DateTime time;
LastRecentlyUsed.TryRemove(tenantId, out time);
// and now we will try creating it again
}
else
{
return(true);
}
}
var config = CreateTenantConfiguration(tenantId);
if (config == null)
{
return(false);
}
var hasAcquired = false;
try
{
if (!ResourceSemaphore.Wait(ConcurrentResourceLoadTimeout))
{
throw new ConcurrentLoadTimeoutException("Too much counters loading concurrently, timed out waiting for them to load.");
}
hasAcquired = true;
counter = ResourcesStoresCache.GetOrAdd(tenantId, __ => Task.Factory.StartNew(() =>
{
var transportState = ResourseTransportStates.GetOrAdd(tenantId, s => new TransportState());
var cs = new CounterStorage(systemDatabase.ServerUrl, tenantId, config, transportState);
AssertLicenseParameters();
// if we have a very long init process, make sure that we reset the last idle time for this db.
LastRecentlyUsed.AddOrUpdate(tenantId, SystemTime.UtcNow, (_, time) => SystemTime.UtcNow);
return(cs);
}).ContinueWith(task =>
{
if (task.Status == TaskStatus.Faulted) // this observes the task exception
{
Logger.WarnException("Failed to create counters " + tenantId, task.Exception);
}
return(task);
}).Unwrap());
return(true);
}
finally
{
if (hasAcquired)
{
ResourceSemaphore.Release();
}
}
}
public override bool TryGetOrCreateResourceStore(string tenantId, out Task <RavenFileSystem> fileSystem)
{
if (Locks.Contains(DisposingLock))
{
throw new ObjectDisposedException("FileSystem", "Server is shutting down, can't access any file systems");
}
if (Locks.Contains(tenantId))
{
throw new InvalidOperationException("FileSystem '" + tenantId + "' is currently locked and cannot be accessed");
}
ManualResetEvent cleanupLock;
if (Cleanups.TryGetValue(tenantId, out cleanupLock) && cleanupLock.WaitOne(MaxTimeForTaskToWaitForDatabaseToLoad) == false)
{
throw new InvalidOperationException($"File system '{tenantId}' is currently being restarted and cannot be accessed. We already waited {MaxTimeForTaskToWaitForDatabaseToLoad.TotalSeconds} seconds.");
}
if (ResourcesStoresCache.TryGetValue(tenantId, out fileSystem))
{
if (fileSystem.IsFaulted || fileSystem.IsCanceled)
{
ResourcesStoresCache.TryRemove(tenantId, out fileSystem);
DateTime time;
LastRecentlyUsed.TryRemove(tenantId, out time);
// and now we will try creating it again
}
else
{
return(true);
}
}
var config = CreateTenantConfiguration(tenantId);
if (config == null)
{
return(false);
}
var hasAcquired = false;
try
{
if (!ResourceSemaphore.Wait(ConcurrentResourceLoadTimeout))
{
throw new ConcurrentLoadTimeoutException("Too much counters loading concurrently, timed out waiting for them to load.");
}
hasAcquired = true;
fileSystem = ResourcesStoresCache.GetOrAdd(tenantId, __ => Task.Factory.StartNew(() =>
{
var transportState = ResourseTransportStates.GetOrAdd(tenantId, s => new TransportState());
AssertLicenseParameters(config);
var fs = new RavenFileSystem(config, tenantId, transportState);
fs.Initialize();
// if we have a very long init process, make sure that we reset the last idle time for this db.
LastRecentlyUsed.AddOrUpdate(tenantId, SystemTime.UtcNow, (_, time) => SystemTime.UtcNow);
return(fs);
}).ContinueWith(task =>
{
if (task.Status == TaskStatus.Faulted) // this observes the task exception
{
Logger.WarnException("Failed to create filesystem " + tenantId, task.Exception);
}
return(task);
}).Unwrap());
return(true);
}
finally
{
if (hasAcquired)
{
ResourceSemaphore.Release();
}
}
}
public bool TryGetOrCreateResourceStore(string tenantId, out Task <DocumentDatabase> database)
{
if (Locks.Contains(DisposingLock))
{
throw new ObjectDisposedException("DatabaseLandlord", "Server is shutting down, can't access any databases");
}
if (ResourcesStoresCache.TryGetValue(tenantId, out database))
{
if (database.IsFaulted || database.IsCanceled)
{
ResourcesStoresCache.TryRemove(tenantId, out database);
DateTime time;
LastRecentlyUsed.TryRemove(tenantId, out time);
// and now we will try creating it again
}
else
{
return(true);
}
}
if (Locks.Contains(tenantId))
{
throw new InvalidOperationException("Database '" + tenantId + "' is currently locked and cannot be accessed.");
}
var config = CreateTenantConfiguration(tenantId);
if (config == null)
{
return(false);
}
database = ResourcesStoresCache.GetOrAdd(tenantId, __ => Task.Factory.StartNew(() =>
{
var transportState = ResourseTransportStates.GetOrAdd(tenantId, s => new TransportState());
AssertLicenseParameters(config);
var documentDatabase = new DocumentDatabase(config, transportState);
documentDatabase.SpinBackgroundWorkers();
documentDatabase.Disposing += DocumentDatabaseDisposingStarted;
documentDatabase.DisposingEnded += DocumentDatabaseDisposingEnded;
documentDatabase.StorageInaccessible += UnloadDatabaseOnStorageInaccessible;
// register only DB that has incremental backup set.
documentDatabase.OnBackupComplete += OnDatabaseBackupCompleted;
// if we have a very long init process, make sure that we reset the last idle time for this db.
LastRecentlyUsed.AddOrUpdate(tenantId, SystemTime.UtcNow, (_, time) => SystemTime.UtcNow);
return(documentDatabase);
}).ContinueWith(task =>
{
if (task.Status == TaskStatus.Faulted) // this observes the task exception
{
Logger.WarnException("Failed to create database " + tenantId, task.Exception);
}
return(task);
}).Unwrap());
return(true);
}