private bool SetupRequestToProperDatabase(IHttpContext ctx)
{
var requestUrl = ctx.GetRequestUrlForTenantSelection();
var match = databaseQuery.Match(requestUrl);
var onBeforeRequest = BeforeRequest;
if (match.Success == false)
{
currentTenantId.Value = Constants.SystemDatabase;
currentDatabase.Value = SystemDatabase;
currentConfiguration.Value = SystemConfiguration;
databaseLastRecentlyUsed.AddOrUpdate("System", SystemTime.UtcNow, (s, time) => SystemTime.UtcNow);
if (onBeforeRequest != null)
{
var args = new BeforeRequestEventArgs
{
Context = ctx,
IgnoreRequest = false,
TenantId = "System",
Database = SystemDatabase
};
onBeforeRequest(this, args);
if (args.IgnoreRequest)
return false;
}
return true;
}
var tenantId = match.Groups[1].Value;
Task<DocumentDatabase> resourceStoreTask;
bool hasDb;
try
{
hasDb = TryGetOrCreateResourceStore(tenantId, out resourceStoreTask);
}
catch (Exception e)
{
OutputDatabaseOpenFailure(ctx, tenantId, e);
return false;
}
if (hasDb)
{
try
{
if (resourceStoreTask.Wait(TimeSpan.FromSeconds(30)) == false)
{
ctx.SetStatusToNotAvailable();
ctx.WriteJson(new
{
Error = "The database " + tenantId + " is currently being loaded, but after 30 seconds, this request has been aborted. Please try again later, database loading continues.",
});
return false;
}
if (onBeforeRequest != null)
{
var args = new BeforeRequestEventArgs
{
Context = ctx,
IgnoreRequest = false,
TenantId = tenantId,
Database = resourceStoreTask.Result
};
onBeforeRequest(this, args);
if (args.IgnoreRequest)
return false;
}
}
catch (Exception e)
{
OutputDatabaseOpenFailure(ctx, tenantId, e);
return false;
}
var resourceStore = resourceStoreTask.Result;
databaseLastRecentlyUsed.AddOrUpdate(tenantId, SystemTime.UtcNow, (s, time) => SystemTime.UtcNow);
if (string.IsNullOrEmpty(Configuration.VirtualDirectory) == false && Configuration.VirtualDirectory != "/")
{
ctx.AdjustUrl(Configuration.VirtualDirectory + match.Value);
}
else
{
ctx.AdjustUrl(match.Value);
}
currentTenantId.Value = tenantId;
currentDatabase.Value = resourceStore;
currentConfiguration.Value = resourceStore.Configuration;
}
else
{
ctx.SetStatusToNotFound();
ctx.WriteJson(new
{
Error = "Could not find a database named: " + tenantId
});
return false;
}
return true;
}
private bool SetupRequestToProperDatabase(IHttpContext ctx)
{
var requestUrl = ctx.GetRequestUrlForTenantSelection();
var match = databaseQuery.Match(requestUrl);
var onBeforeRequest = BeforeRequest;
if (match.Success == false)
{
currentTenantId.Value = Constants.SystemDatabase;
currentDatabase.Value = SystemDatabase;
currentConfiguration.Value = SystemConfiguration;
SystemDatabase.WorkContext.UpdateFoundWork();
if (onBeforeRequest != null)
{
var args = new BeforeRequestEventArgs
{
Context = ctx,
IgnoreRequest = false,
TenantId = "System",
Database = SystemDatabase
};
onBeforeRequest(this, args);
if (args.IgnoreRequest)
return false;
}
return true;
}
var tenantId = match.Groups[1].Value;
Task<DocumentDatabase> resourceStoreTask;
bool hasDb;
try
{
hasDb = TryGetOrCreateResourceStore(tenantId, out resourceStoreTask);
}
catch (Exception e)
{
OutputDatabaseOpenFailure(ctx, tenantId, e);
return false;
}
if (hasDb)
{
try
{
const int timeToWaitForDatabaseToLoad = 5;
if (resourceStoreTask.IsCompleted == false && resourceStoreTask.IsFaulted == false)
{
if (_maxNumberOfThreadsForDatabaseToLoad.Wait(0) == false)
{
ctx.SetStatusToNotAvailable();
ctx.WriteJson(new
{
Error =
string.Format(
"The database {0} is currently being loaded, but there are too many requests waiting for database load. Please try again later, database loading continues.",
tenantId),
});
return false;
}
try
{
if (resourceStoreTask.Wait(TimeSpan.FromSeconds(timeToWaitForDatabaseToLoad)) == false)
{
ctx.SetStatusToNotAvailable();
ctx.WriteJson(new
{
Error =
string.Format(
"The database {0} is currently being loaded, but after {1} seconds, this request has been aborted. Please try again later, database loading continues.",
tenantId, timeToWaitForDatabaseToLoad),
});
return false;
}
}
finally
{
_maxNumberOfThreadsForDatabaseToLoad.Release();
}
}
if (onBeforeRequest != null)
{
var args = new BeforeRequestEventArgs
{
Context = ctx,
IgnoreRequest = false,
TenantId = tenantId,
Database = resourceStoreTask.Result
};
onBeforeRequest(this, args);
if (args.IgnoreRequest)
return false;
}
}
catch (Exception e)
{
OutputDatabaseOpenFailure(ctx, tenantId, e);
return false;
}
var resourceStore = resourceStoreTask.Result;
resourceStore.WorkContext.UpdateFoundWork();
if (string.IsNullOrEmpty(Configuration.VirtualDirectory) == false && Configuration.VirtualDirectory != "/")
{
ctx.AdjustUrl(Configuration.VirtualDirectory + match.Value);
}
else
{
ctx.AdjustUrl(match.Value);
}
currentTenantId.Value = tenantId;
currentDatabase.Value = resourceStore;
currentConfiguration.Value = resourceStore.Configuration;
}
else
{
ctx.SetStatusToNotFound();
ctx.WriteJson(new
{
Error = "Could not find a database named: " + tenantId
});
return false;
}
return true;
}
