通过无服务器 Azure SignalR 触发函数向用户发送消息，同时将有效负载存储到 Azure 存储帐户表

Question

我有以下 C# 代码，用于向用户发送消息：

[Function(nameof(SendToUser))]
[SignalROutput(HubName = "chat", ConnectionStringSetting = "SignalRConnection")]
public static SignalRMessageAction SendToUser([HttpTrigger(AuthorizationLevel.Anonymous, "post")] HttpRequestData req)
{
    using var bodyReader = new StreamReader(req.Body);
    return new SignalRMessageAction("newMessage")
    {
        Arguments = new[] { bodyReader.ReadToEnd() },
        UserId = "userToSend",
    };
}

当使用输出表绑定而不是azure存储帐户的SDK触发此signalR函数时，我还想将对象的json有效负载保存到Azure存储帐户的表中。是否可以将

SignalROutput

与

TableOutput

结合起来，使上面的代码看起来像下面的模式？

public class MyTableData : Azure.Data.Tables.ITableEntity
{
    public string Text { get; set; }

    public string PartitionKey { get; set; }
    public string RowKey { get; set; }
    public DateTimeOffset? Timestamp { get; set; }
    public ETag ETag { get; set; }
}

[Function(nameof(SendToUser))]
[SignalROutput(HubName = "chat", ConnectionStringSetting = "SignalRConnection")]
[TableOutput("OutputTable", Connection = "AzureWebJobsStorage")]
public static object[] SendToUser([HttpTrigger(AuthorizationLevel.Anonymous, "post")] HttpRequestData req)
{
    using var bodyReader = new StreamReader(req.Body);
    return
    [
    new SignalRMessageAction("newMessage")
    {
        Arguments = new[] { bodyReader.ReadToEnd() },
        UserId = "userToSend",
    },
    new MyTableData()
    {
       Text = "Test text",
       PartitionKey = "key",
       RowKey = "myrowkey",
       Timestamp = DateTime.Now,
       ETag = "tag"
    }
    ];
}

Answer 1

同一个方法不可能同时拥有两个输出属性，但本文介绍了如何实现多个 Azure Functions 输出的目标。