protected bool EnsureTenantSwitched(ITenant tenant)
{
tenant.NotNull(nameof(tenant));
if (CurrentTenant.Equals(tenant))
{
return(false);
}
CurrentTenant = tenant;
Logger.LogTrace(InternalResource.SwitchNewTenantFormat.Format(tenant.ToString()));
Dependency.Options.PostTenantSwitchedAction?.Invoke(this);
return(true);
}
protected virtual async Task <TResult> WritingSeparationOperationAsync <TResult>
(Func <Task <TResult> > writingFunc, Func <Task <TResult> > dataSynchronizationFunc = null,
CancellationToken cancellationToken = default)
{
writingFunc.NotNull(nameof(writingFunc));
// 暂存当前租户与连接字符串
var lastTenant = CurrentTenant;
var lastConnectionString = CurrentConnectionString;
// 保存变化到写入连接字符串
await ChangeConnectionStringAsync(tenant => tenant.WritingConnectionString,
cancellationToken).ConfigureAwait();
var value = await writingFunc.Invoke().ConfigureAwait();
if (CurrentTenant.DataSynchronization)
{
dataSynchronizationFunc.NotNull(nameof(dataSynchronizationFunc));
// 数据同步到默认连接字符串
await ChangeConnectionStringAsync(tenant => tenant.DefaultConnectionString,
cancellationToken).ConfigureAwait();
await dataSynchronizationFunc.Invoke().ConfigureAwait();
}
// 还原租户与连接字符串
if (!CurrentTenant.Equals(lastTenant))
{
EnsureTenantSwitched(lastTenant);
}
if (!IsCurrentConnectionString(lastConnectionString))
{
EnsureDatabaseChanged(lastConnectionString);
}
return(value);
}
protected virtual TResult WritingSeparationOperation <TResult>(Func <TResult> writingFunc,
Func <TResult> dataSynchronizationFunc = null)
{
writingFunc.NotNull(nameof(writingFunc));
// 暂存当前租户与连接字符串
var lastTenant = CurrentTenant;
var lastConnectionString = CurrentConnectionString;
// 保存变化到写入连接字符串
ChangeConnectionString(tenant => tenant.WritingConnectionString);
var result = writingFunc.Invoke();
if (CurrentTenant.DataSynchronization)
{
dataSynchronizationFunc.NotNull(nameof(dataSynchronizationFunc));
// 数据同步到默认连接字符串
ChangeConnectionString(tenant => tenant.DefaultConnectionString);
dataSynchronizationFunc.Invoke();
}
// 还原租户与连接字符串
if (!CurrentTenant.Equals(lastTenant))
{
EnsureTenantSwitched(lastTenant);
}
if (!IsCurrentConnectionString(lastConnectionString))
{
EnsureDatabaseChanged(lastConnectionString);
}
return(result);
}