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Application insights application insights use application maps to build request link views
2020-11-06 21:13:00 【itread01】
Applicaotn Insigths Use Application Maps Build request link view
When building the system , In most cases, the logical operation of the request needs to be in different services , Or interface to complete the entire request link . A request can go through multiple components , It is very likely that the client requests the site 1, Site 1 Request site 2, … Site N It's the final processing of data and then it's returned in turn .
In this case , If there is an intuitive view of the status of requests on each site ( success , Failure ), When problems arise , It's very helpful to locate where problems occur . By means of Azure Application insights (Application Insights) The telemetry correlation in the Application Maps Can be realized
Effect display
Implementation principle
Application Insights The data model used to allocate telemetry correlation is defined , Every outgoing operation ( for example , For another component HTTP call ) Is represented by dependency telemetry . Dependency telemetry also defines its own global, unique id, This dependency calls the request initiated by telemetering this id As its operation_parentId. Through operation_Id、operation_parentId and request.id, That is, it can generate a view of decentralized logical operations ( These fields also define the causal order of telemetry calls ).
Example item construction Application Maps
In the example item , This request was made 4 Segment forwarding .
The first paragraph : Native code access APIM(test01.azure-api.cn),
The second paragraph :APIM Visit the site 1(lbphptest.chinacloudsites.cn)
The third paragraph : Site 1 Visit the site 2(lbjavatest.chinacloudsites.cn)
The fourth paragraph : Site 2 Access to the final processing request Azure Function(Http Trigger)( functionapp120201013155425.chinacloudsites.cn).
Preparation conditions
- establish Application Insights (lbphptest202011050549)
- establish APIM(test01)
- Create two App Service (lbphptest and lbjavatest)
- Build a Azure Function(functionapp120201013155425)
notes : If you are not familiar with how to set up the above resources , You can navigate to the resources section at the end of the article
Step one : stay Azure Funciton Enable and associate Application Insights Service
Enter Azure Funciton Portal , Choice Application Insights function , Select the established one according to the page prompts Application Insights (lbphptest202011050549).
The establishment of a Function For the preset HttpTrigger Pattern , Test purpose , Code can be modified without any modification . Refer to the figure below to get Function Of URL, For the next step at the site 2 Call me .
Step two : At the site 2(lbjavatest) Enable and associate Application Insights Service , And deploy code requests Azure Function
Enter the site 2 The portal page of , stay Application Insights According to the prompt in the catalogue Enable Application Insights And choose the same Application Insights.
Deploy code to call step one Azure Function
//Level 3 [HttpGet] [Route("[Action]")] public string Fun([FromQuery] string name) { using (HttpClient httpClient = new HttpClient()) { var url = $"https://functionapp120201013155425.chinacloudsites.cn/api/HttpTrigger1?name={name}"; HttpRequestMessage httpRequest = new HttpRequestMessage(HttpMethod.Get, url); httpRequest.Headers.Add("Accept", "application/json, text/plain, */*"); var response = httpClient.SendAsync(httpRequest).Result; string responseContent = response.Content.ReadAsStringAsync().Result; return responseContent; } }
Step three : At the site 1(lbphptest) Enable and associate Application Insights Service , And deploy the code request site 2
Enter the site 1 The portal page of , stay Application Insights According to the prompt in the catalogue Enable Application Insights And choose the same Application Insights.
Deploy code to call the site in step 2 2 Of URL, Code and access Azure Function be similar .
//Level 2 [HttpGet] [Route("[Action]")] public string FunSub([FromQuery] string name) { using (HttpClient httpClient = new HttpClient()) { var url = $"https://lbjavatest.chinacloudsites.cn/WeatherForecast/fun?name={name}"; HttpRequestMessage httpRequest = new HttpRequestMessage(HttpMethod.Get, url); httpRequest.Headers.Add("Accept", "application/json, text/plain, */*"); var response = httpClient.SendAsync(httpRequest).Result; string responseContent = response.Content.ReadAsStringAsync().Result; return responseContent; } }
Step four : stay APIM Enable and associate Application Insights Service , And set API Visit the site 1
Enter APIM The portal page of , stay Application Insights Add the same to the table of contents Application Insights.
stay APIM To configure API Visit the site 1(lbphptest)
- Click on “Add API” Button
- Choose from App Service To establish
- Choose a site 1(lbphptest)
Add an operation to the interface. A new operation , Visit the site 1 Interface in /weatherforecast/funsub?name={name}
Step 5 : stay ASP.NET Core Add code in Application Insights SDK And configure the connection string , Access in the interface APIM.
Add... To native code Application Insights SDK
Configure the connection string ( In a string Application Insights Of Overview Page copy )
{ "Logging": { "LogLevel": { "Default": "Information", "Microsoft": "Warning", "Microsoft.Hosting.Lifetime": "Information" } }, "ApplicationInsights": { "ConnectionString": "InstrumentationKey=xxx-xxx-xxx-xxx-xxxxx;EndpointSuffix=applicationinsights.azure.cn;IngestionEndpoint=https://chinaeast2-0.in.applicationinsights.azure.cn/" }, "AllowedHosts": "*" }
Start the local program , And access it through the browser https://localhost:44323/weatherforecast/Funsubfornt?name=test from local -- apim -- app 1 – app 2 -- function
Look at the final renderings :
【END】
References :
stay Azure Create the first function in the portal : https://docs.azure.cn/zh-cn/azure-functions/functions-create-first-azure-function
Apply to ASP.NET Core Of the application Application Insights : https://docs.azure.cn/zh-cn/azure-monitor/app/asp-net-core
About API management : https://docs.azure.cn/zh-cn/api-management/api-management-key-concepts
stay Azure To establish ASP.NET Core Web Apply : https://docs.azure.cn/zh-cn/app-service/quickstart-dotnetcore?pivots=platform-linux
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