Microsoft.Datasync.Client DatasyncClient 带有选项。Offlinestore 抛出 PushFailedException

Question

我正在使用 Microsoft Visual Studio Community 2022（64 位）- 预览版、.Net Maui、Azure Web App 和 SQL Server，并遵循了 ToDo 示例中给出的示例。 我成功地从另一个网站收集数据，然后将其保存到我的远程表中。

    private async Task InitializeAsync()
    {
        // Short circuit, in case we are already initialized.
        if (_initialized)
        {
            return;
        }

        try
        {
            // Wait to get the async initialization lock
            await _asyncLock.WaitAsync();

            // Create the offline store definition
            //var connectionString = new UriBuilder { Scheme = "file", Path = Constants.OfflineDatabasePath, Query = "?mode=rwc" }.Uri.ToString();
            var connectionString = new UriBuilder { Scheme = "file", Path = Constants.DatabasePath, Query = "?mode=rwc" }.Uri.ToString();
            var store = new OfflineSQLiteStore(connectionString);           

            // Define the offline tables
            store.DefineTable<Profile>();
            store.DefineTable<ProfileStore>();
            store.DefineTable<Employee>();
            store.DefineTable<EmployeeJob>();
            store.DefineTable<Payroll>();
            store.DefineTable<PayrollDetails>();

            var options = new DatasyncClientOptions
            {
                OfflineStore = store,
                HttpPipeline = new HttpMessageHandler[] { new LoggingHandler() }
            };

            // Create the datasync client.
            _DatasyncClient = new DatasyncClient(Constants.ServiceUri, options);

            // Initialize the database
            await _DatasyncClient.InitializeOfflineStoreAsync();

            // Get a reference to the offline tables.
            _ProfileTable = _DatasyncClient.GetOfflineTable<Profile>();
            _ProfileStoreTable = _DatasyncClient.GetOfflineTable<ProfileStore>();
            _EmployeeTable = _DatasyncClient.GetOfflineTable<Employee>();
            _EmployeeJobTable = _DatasyncClient.GetOfflineTable<EmployeeJob>();
            _PayrollTable = _DatasyncClient.GetOfflineTable<Payroll>();
            _PayrollDetailsTable = _DatasyncClient.GetOfflineTable<PayrollDetails>();    

             **await _DatasyncClient.PushTablesAsync(); ** <-- This is what fails

            // Set _initialized to true to prevent duplication of locking.
            _initialized = true;
        }
        catch (Exception)
        {
            // Re-throw the exception.
            throw;
        }
        finally
        {
            _asyncLock.Release();
        }
    }

Sometimes, it gets into a state where the _DatasyncClient.PushTablesAsync fails.
HResult = -2146233088
ex = {"Push operation has failed. See the PushResult for details."}

PushResult = {Microsoft.Datasync.Client.Offline.PushCompletionResult}
Errors[0]:
    Status = PreconditionFailed

我已经登录，使用：

            var options = new DatasyncClientOptions
            {
                OfflineStore = store,
                HttpPipeline = new HttpMessageHandler[] { new LoggingHandler() }
            };
            _DatasyncClient = new DatasyncClient(Constants.ServiceUri, options);

它显示（我擦洗了一些数据）：

[HTTP] >>> PUT https://<myapp>.azurewebsites.net/tables/employeejob/02a9b6696aa341bcabc4aba2491c1aea
[HTTP] >>> If-Match: "AAAAAAAAUlU="
[HTTP] >>> ZUMO-API-VERSION: 3.0.0
[HTTP] >>> User-Agent: Datasync/6.0.0.0
[HTTP] >>> User-Agent: (lang=Managed;os=Microsoft Windows 10.0.22621/Microsoft Windows NT 10.0.22621.0;arch=X64;version=6.0.0.0;test)
[HTTP] >>> X-ZUMO-VERSION: Datasync/6.0.0.0 (lang=Managed;os=Microsoft Windows 10.0.22621/Microsoft Windows NT 10.0.22621.0;arch=X64;version=6.0.0.0;test)
[HTTP] >>> Content-Type: application/json; charset=utf-8
[HTTP] >>> {"id":"02a9b6696aa341bcabc4aba2491c1aea","employeeID":"268315","profileDBID":"c6e7ea7d-3dde-48c3-a582-186e594d8d3f","role":"Manager","startDate":"2019-12-30T08:00:00Z","endDate":null,"version":"AAAAAAAAUlU="}
[HTTP] <<< PreconditionFailed Precondition Failed
[HTTP] <<< Date: Fri, 06 Oct 2023 08:22:58 GMT
[HTTP] <<< Server: Microsoft-IIS/10.0
[HTTP] <<< ETag: "AAAAAAAAUnc="
[HTTP] <<< X-Powered-By: ASP.NET
[HTTP] <<< Content-Length: 686
[HTTP] <<< Content-Type: application/json; charset=utf-8
[HTTP] <<< Last-Modified: Fri, 06 Oct 2023 07:29:01 GMT
[HTTP] <<< {"employeeID":"268315","profileDBID":"c6e7ea7d-3dde-48c3-a582-186e594d8d3f","role":"Manager","startDate":"2019-12-30T08:00:00","endDate":null,"id":"02a9b6696aa341bcabc4aba2491c1aea","updatedAt":"2023-10-06T07:29:01.806+00:00","version":"AAAAAAAAUnc=","deleted":false}
Exception thrown: 'Microsoft.Datasync.Client.Offline.PushFailedException' in System.Private.CoreLib.dll

数据确实成功进入我的在线数据库，所以我知道我的代码正在工作，但偶尔会失败，并且永远不会恢复。我唯一能做的就是删除我本地的离线数据库（或者我猜使用清除功能）

我的数据似乎没有任何问题。

等待 _DatasyncClient.PushTablesAsync();

期望它将本地数据库记录推送到在线数据库。

我研究了该错误并阅读了有关 Azure ETag 设置的内容，但不确定是否可以在 Microsoft.DataSync 客户端上设置

令人沮丧，因为我希望有一个可以同步到在线数据库的功能离线数据库，但我可能必须手动执行此操作。

Answer 1

答案是放弃 Microsoft.Datasync，它还没有准备好迎接黄金时段。 我现在在本地执行实体框架并手动复制到 Azure。