问题描述
我在Azure中有一个Azure SignalR服务资源,该资源正在无服务器模式下运行。
与此相呼应的是使用TypeScript在Visual Studio Code中构建的Azure Functions应用。
我有一个使用InfoRTrigger的名为Info的功能。该功能将通过调用名为“ Info”的方法来触发。
function.json
{
"bindings": [
{
"type": "signalRTrigger","name": "inv","hubName": "mailBox","category": "messages","event": "Info","connectionStringSetting": "AzureSignalRConnectionString","parameterNames":[
"mailBoxInfo"
],"direction": "in"
},{
"type": "http","direction": "out","name": "res"
}
],"scriptFile": "../dist/Info/index.js"
}
脚本-index.js
import { AzureFunction,Context,HttpRequest } from "@azure/functions"
const httpTrigger: AzureFunction = async function (context: Context,invocation:any,res: HttpRequest): Promise<void> {
context.res = {
// status: 200,/* Defaults to 200 */
body: 'boom'
};
};
export default httpTrigger;
我的问题是:
如何调试使用SignalRTrigger输入绑定的功能?
如果我在VS Code Azure Functions扩展中使用“立即执行函数”选项,则会遇到以下错误。
不确定这是否与整个问题有关?
[2020-11-10T20:19:57.884Z] Executing 'Functions.Info' (Reason='This function was programmatically
called via the host APIs.',Id=1d7cc8c0-d49d-4ff4-bc1b-38fa92a3de2e)
[2020-11-10T20:19:57.887Z] Executed 'Functions.Info' (Failed,Id=1d7cc8c0-d49d-4ff4-bc1b-38fa92a3de2e,Duration=4ms)
[2020-11-10T20:19:57.887Z] System.Private.CoreLib: Exception while executing function:
Functions.Info. Microsoft.Azure.WebJobs.Host: Exception binding
parameter 'invocation'. Microsoft.Azure.WebJobs.Host: Object
reference not set to an instance of an object.
解决方法
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