Azure Application Insight (2) Azure Function 設置Application Insight

本文轉載自查看原文 2020-07-14 18:15 597 Azure Application Insight

　　《Windows Azure Platform 系列文章目錄》

　　本文介紹的是由世紀互聯運維的Azure China。

　　目前Azure China是要通過代碼來配置Application Insight監控的，本文會詳細介紹相關的內容。

　　1.首先，我們先創建1個新的資源組

　　2.然后在這個資源組里，創建新的Azure Function。如下圖：

　　3.創建這個Function的時候，還會默認創建Application Insight。如下圖：

　　4.創建完畢后，資源如下：

　　5.我們選擇上面已經創建的Azure Function，打開Application Insight功能

　　選擇完畢后，點擊Apply生效。

　　6.然后我們在本地PC，創建1個Azure Function項目：

　　7.新建一個Function，類型為Http Trigger

　　8.在項目目錄中，增加starup.cs類。如下圖：

　　9.startup.cs代碼如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.ApplicationInsights.Channel;
using Microsoft.ApplicationInsights.Extensibility;
using Microsoft.ApplicationInsights.Extensibility.Implementation.ApplicationId;
using Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.QuickPulse;
using Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel;
using Microsoft.Azure.Functions.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection;

[assembly: FunctionsStartup(typeof(FunctionApp1.Startup))]


namespace FunctionApp1
{
    internal class Startup : FunctionsStartup
    {
        public override void Configure(IFunctionsHostBuilder builder)
        {
            var quickPulseFactory = builder.Services.FirstOrDefault(sd => sd.ServiceType == typeof(ITelemetryModule) &&
            sd.ImplementationType == typeof(QuickPulseTelemetryModule));
            if (quickPulseFactory != null)
            {
                builder.Services.Remove(quickPulseFactory);
            }

            var appIdFactory = builder.Services.FirstOrDefault(sd => sd.ServiceType == typeof(IApplicationIdProvider));
            if (appIdFactory != null)
            {
                builder.Services.Remove(appIdFactory);
            }

            var channelFactory = builder.Services.FirstOrDefault(sd => sd.ServiceType == typeof(ITelemetryChannel));
            if (channelFactory != null)
            {
                builder.Services.Remove(channelFactory);
            }

            builder.Services.AddSingleton<ITelemetryModule, QuickPulseTelemetryModule>(_ =>
            new QuickPulseTelemetryModule
            {
                QuickPulseServiceEndpoint = "https://live.applicationinsights.azure.cn/QuickPulseService.svc"
            });

            builder.Services.AddSingleton<IApplicationIdProvider, ApplicationInsightsApplicationIdProvider>(_ => new ApplicationInsightsApplicationIdProvider() { ProfileQueryEndpoint = "https://dc.applicationinsights.azure.cn/api/profiles/{0}/appId" });

            builder.Services.AddSingleton<Microsoft.ApplicationInsights.Channel.ITelemetryChannel>(_ => new ServerTelemetryChannel() { EndpointAddress = "https://dc.applicationinsights.azure.cn/v2/track" });
        }
    }

}

　　10.在項目中，增加對下面依賴性的引用：

　　11.在項目根目錄中，增加文件：appsettings.json

{
  "ApplicationInsights": {
    "InstrumentationKey": "[Application Insight的秘鑰]"
  },
  "Logging": {
    "LogLevel": {
      "Default": "None"
    }
  }
}

　　12.上面的Application Insight的秘鑰，我們可以通過查看Application Insight的訪問秘鑰：　　

　　頁面跳轉：

　　把上面的Instrumentation Key，粘貼到步驟11的配置項里。

　　13.在Visual Studio項目中，修改Function1.cs的代碼：

using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Microsoft.ApplicationInsights;
using Microsoft.ApplicationInsights.Extensibility;

namespace FunctionApp1
{
    
    public static class Function1
    {
        [FunctionName("Function1")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
            ILogger log)
        {        
            string name = req.Query["name"];

            //增加的代碼
            var telemetry = new TelemetryClient();
            telemetry.TrackTrace("Request " + name);
            //代碼結束

            string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
            dynamic data = JsonConvert.DeserializeObject(requestBody);
            name = name ?? data?.name;

            string responseMessage = string.IsNullOrEmpty(name)
                ? "This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response."
                : $"Hello, {name}. This HTTP triggered function executed successfully.";

            //增加的代碼
            telemetry.TrackTrace("Execute finished");
            //代碼結束

            return new OkObjectResult(responseMessage);
        }
    }
}