├── .gitignore ├── APIContagem ├── .vscode │ ├── launch.json │ └── tasks.json ├── APIContagem.csproj ├── Contador.cs ├── Controllers │ └── ContadorController.cs ├── Logging │ └── ContagemLogging.cs ├── Models │ └── ResultadoContador.cs ├── Program.cs ├── Properties │ └── launchSettings.json ├── RateLimitExtensions.cs ├── appsettings.Development.json └── appsettings.json ├── DockerCompose ├── .vscode │ ├── redis-xplorer.redis │ └── settings.json └── docker-compose.yml ├── README.md └── WorkerConsumoAPIContagem ├── .vscode ├── launch.json └── tasks.json ├── Models └── ResultadoContador.cs ├── Program.cs ├── Properties └── launchSettings.json ├── Resilience └── FallbackContagem.cs ├── Worker.cs ├── WorkerConsumoAPIContagem.csproj ├── WorkerConsumoAPIContagem.sln ├── appsettings.Development.json └── appsettings.json /.gitignore: -------------------------------------------------------------------------------- 1 | ## Ignore Visual Studio temporary files, build results, and 2 | ## files generated by popular Visual Studio add-ons. 3 | ## 4 | ## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore 5 | 6 | # User-specific files 7 | *.rsuser 8 | *.suo 9 | *.user 10 | *.userosscache 11 | *.sln.docstates 12 | 13 | # User-specific files (MonoDevelop/Xamarin Studio) 14 | *.userprefs 15 | 16 | # Mono auto generated files 17 | mono_crash.* 18 | 19 | # Build results 20 | [Dd]ebug/ 21 | [Dd]ebugPublic/ 22 | [Rr]elease/ 23 | [Rr]eleases/ 24 | x64/ 25 | x86/ 26 | [Aa][Rr][Mm]/ 27 | [Aa][Rr][Mm]64/ 28 | bld/ 29 | [Bb]in/ 30 | [Oo]bj/ 31 | [Ll]og/ 32 | [Ll]ogs/ 33 | 34 | # Visual Studio 2015/2017 cache/options directory 35 | .vs/ 36 | # Uncomment if you have tasks that create the project's static files in wwwroot 37 | #wwwroot/ 38 | 39 | # Visual Studio 2017 auto generated files 40 | Generated\ Files/ 41 | 42 | # MSTest test Results 43 | [Tt]est[Rr]esult*/ 44 | [Bb]uild[Ll]og.* 45 | 46 | # NUnit 47 | *.VisualState.xml 48 | TestResult.xml 49 | nunit-*.xml 50 | 51 | # Build Results of an ATL Project 52 | [Dd]ebugPS/ 53 | [Rr]eleasePS/ 54 | dlldata.c 55 | 56 | # Benchmark Results 57 | BenchmarkDotNet.Artifacts/ 58 | 59 | # .NET Core 60 | project.lock.json 61 | project.fragment.lock.json 62 | artifacts/ 63 | 64 | # StyleCop 65 | StyleCopReport.xml 66 | 67 | # Files built by Visual Studio 68 | *_i.c 69 | *_p.c 70 | *_h.h 71 | *.ilk 72 | *.meta 73 | *.obj 74 | *.iobj 75 | *.pch 76 | *.pdb 77 | *.ipdb 78 | *.pgc 79 | *.pgd 80 | *.rsp 81 | *.sbr 82 | *.tlb 83 | *.tli 84 | *.tlh 85 | *.tmp 86 | *.tmp_proj 87 | *_wpftmp.csproj 88 | *.log 89 | *.vspscc 90 | *.vssscc 91 | .builds 92 | *.pidb 93 | *.svclog 94 | *.scc 95 | 96 | # Chutzpah Test files 97 | _Chutzpah* 98 | 99 | # Visual C++ cache files 100 | ipch/ 101 | *.aps 102 | *.ncb 103 | *.opendb 104 | *.opensdf 105 | *.sdf 106 | *.cachefile 107 | *.VC.db 108 | *.VC.VC.opendb 109 | 110 | # Visual Studio profiler 111 | *.psess 112 | *.vsp 113 | *.vspx 114 | *.sap 115 | 116 | # Visual Studio Trace Files 117 | *.e2e 118 | 119 | # TFS 2012 Local Workspace 120 | $tf/ 121 | 122 | # Guidance Automation Toolkit 123 | *.gpState 124 | 125 | # ReSharper is a .NET coding add-in 126 | _ReSharper*/ 127 | *.[Rr]e[Ss]harper 128 | *.DotSettings.user 129 | 130 | # TeamCity is a build add-in 131 | _TeamCity* 132 | 133 | # DotCover is a Code Coverage Tool 134 | *.dotCover 135 | 136 | # AxoCover is a Code Coverage Tool 137 | .axoCover/* 138 | !.axoCover/settings.json 139 | 140 | # Visual Studio code coverage results 141 | *.coverage 142 | *.coveragexml 143 | 144 | # NCrunch 145 | _NCrunch_* 146 | .*crunch*.local.xml 147 | nCrunchTemp_* 148 | 149 | # MightyMoose 150 | *.mm.* 151 | AutoTest.Net/ 152 | 153 | # Web workbench (sass) 154 | .sass-cache/ 155 | 156 | # Installshield output folder 157 | [Ee]xpress/ 158 | 159 | # DocProject is a documentation generator add-in 160 | DocProject/buildhelp/ 161 | DocProject/Help/*.HxT 162 | DocProject/Help/*.HxC 163 | DocProject/Help/*.hhc 164 | DocProject/Help/*.hhk 165 | DocProject/Help/*.hhp 166 | DocProject/Help/Html2 167 | DocProject/Help/html 168 | 169 | # Click-Once directory 170 | publish/ 171 | 172 | # Publish Web Output 173 | *.[Pp]ublish.xml 174 | *.azurePubxml 175 | # Note: Comment the next line if you want to checkin your web deploy settings, 176 | # but database connection strings (with potential passwords) will be unencrypted 177 | *.pubxml 178 | *.publishproj 179 | 180 | # Microsoft Azure Web App publish settings. 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Backup files are not needed, 246 | # because we have git ;-) 247 | _UpgradeReport_Files/ 248 | Backup*/ 249 | UpgradeLog*.XML 250 | UpgradeLog*.htm 251 | ServiceFabricBackup/ 252 | *.rptproj.bak 253 | 254 | # SQL Server files 255 | *.mdf 256 | *.ldf 257 | *.ndf 258 | 259 | # Business Intelligence projects 260 | *.rdl.data 261 | *.bim.layout 262 | *.bim_*.settings 263 | *.rptproj.rsuser 264 | *- [Bb]ackup.rdl 265 | *- [Bb]ackup ([0-9]).rdl 266 | *- [Bb]ackup ([0-9][0-9]).rdl 267 | 268 | # Microsoft Fakes 269 | FakesAssemblies/ 270 | 271 | # GhostDoc plugin setting file 272 | *.GhostDoc.xml 273 | 274 | # Node.js Tools for Visual Studio 275 | .ntvs_analysis.dat 276 | node_modules/ 277 | 278 | # Visual Studio 6 build log 279 | *.plg 280 | 281 | # Visual Studio 6 workspace options file 282 | *.opt 283 | 284 | # Visual Studio 6 auto-generated workspace file (contains which files were open etc.) 285 | *.vbw 286 | 287 | # Visual Studio LightSwitch build output 288 | **/*.HTMLClient/GeneratedArtifacts 289 | **/*.DesktopClient/GeneratedArtifacts 290 | **/*.DesktopClient/ModelManifest.xml 291 | **/*.Server/GeneratedArtifacts 292 | **/*.Server/ModelManifest.xml 293 | _Pvt_Extensions 294 | 295 | # Paket dependency manager 296 | .paket/paket.exe 297 | paket-files/ 298 | 299 | # FAKE - F# Make 300 | .fake/ 301 | 302 | # CodeRush personal settings 303 | .cr/personal 304 | 305 | # Python Tools for Visual Studio (PTVS) 306 | __pycache__/ 307 | *.pyc 308 | 309 | # Cake - Uncomment if you are using it 310 | # tools/** 311 | # !tools/packages.config 312 | 313 | # Tabs Studio 314 | *.tss 315 | 316 | # Telerik's JustMock configuration file 317 | *.jmconfig 318 | 319 | # BizTalk build output 320 | *.btp.cs 321 | *.btm.cs 322 | *.odx.cs 323 | *.xsd.cs 324 | 325 | # OpenCover UI analysis results 326 | OpenCover/ 327 | 328 | # Azure Stream Analytics local run output 329 | ASALocalRun/ 330 | 331 | # MSBuild Binary and Structured Log 332 | *.binlog 333 | 334 | # NVidia Nsight GPU debugger configuration file 335 | *.nvuser 336 | 337 | # MFractors (Xamarin productivity tool) working folder 338 | .mfractor/ 339 | 340 | # Local History for Visual Studio 341 | .localhistory/ 342 | 343 | # BeatPulse healthcheck temp database 344 | healthchecksdb 345 | 346 | # Backup folder for Package Reference Convert tool in Visual Studio 2017 347 | MigrationBackup/ 348 | 349 | # Ionide (cross platform F# VS Code tools) working folder 350 | .ionide/ 351 | -------------------------------------------------------------------------------- /APIContagem/.vscode/launch.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "0.2.0", 3 | "configurations": [ 4 | { 5 | // Use IntelliSense to find out which attributes exist for C# debugging 6 | // Use hover for the description of the existing attributes 7 | // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md 8 | "name": ".NET Core Launch (web)", 9 | "type": "coreclr", 10 | "request": "launch", 11 | "preLaunchTask": "build", 12 | // If you have changed target frameworks, make sure to update the program path. 13 | "program": "${workspaceFolder}/bin/Debug/net6.0/APIContagem.dll", 14 | "args": [], 15 | "cwd": "${workspaceFolder}", 16 | "stopAtEntry": false, 17 | // Enable launching a web browser when ASP.NET Core starts. For more information: https://aka.ms/VSCode-CS-LaunchJson-WebBrowser 18 | "serverReadyAction": { 19 | "action": "openExternally", 20 | "pattern": "\\bNow listening on:\\s+(https?://\\S+)" 21 | }, 22 | "env": { 23 | "ASPNETCORE_ENVIRONMENT": "Development" 24 | }, 25 | "sourceFileMap": { 26 | "/Views": "${workspaceFolder}/Views" 27 | } 28 | }, 29 | { 30 | "name": ".NET Core Attach", 31 | "type": "coreclr", 32 | "request": "attach" 33 | } 34 | ] 35 | } -------------------------------------------------------------------------------- /APIContagem/.vscode/tasks.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "2.0.0", 3 | "tasks": [ 4 | { 5 | "label": "build", 6 | "command": "dotnet", 7 | "type": "process", 8 | "args": [ 9 | "build", 10 | "${workspaceFolder}/APIContagem.csproj", 11 | "/property:GenerateFullPaths=true", 12 | "/consoleloggerparameters:NoSummary" 13 | ], 14 | "problemMatcher": "$msCompile" 15 | }, 16 | { 17 | "label": "publish", 18 | "command": "dotnet", 19 | "type": "process", 20 | "args": [ 21 | "publish", 22 | "${workspaceFolder}/APIContagem.csproj", 23 | "/property:GenerateFullPaths=true", 24 | "/consoleloggerparameters:NoSummary" 25 | ], 26 | "problemMatcher": "$msCompile" 27 | }, 28 | { 29 | "label": "watch", 30 | "command": "dotnet", 31 | "type": "process", 32 | "args": [ 33 | "watch", 34 | "run", 35 | "--project", 36 | "${workspaceFolder}/APIContagem.csproj" 37 | ], 38 | "problemMatcher": "$msCompile" 39 | } 40 | ] 41 | } -------------------------------------------------------------------------------- /APIContagem/APIContagem.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | net6.0 5 | enable 6 | enable 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /APIContagem/Contador.cs: -------------------------------------------------------------------------------- 1 | using System.Runtime.InteropServices; 2 | 3 | namespace APIContagem; 4 | 5 | public class Contador 6 | { 7 | private static readonly string _LOCAL; 8 | private static readonly string _KERNEL; 9 | private static readonly string _FRAMEWORK; 10 | 11 | static Contador() 12 | { 13 | _LOCAL = Environment.MachineName; 14 | _KERNEL = Environment.OSVersion.VersionString; 15 | _FRAMEWORK = RuntimeInformation.FrameworkDescription; 16 | } 17 | 18 | private int _valorAtual = 0; 19 | 20 | public int ValorAtual { get => _valorAtual; } 21 | public string Local { get => _LOCAL; } 22 | public string Kernel { get => _KERNEL; } 23 | public string Framework { get => _FRAMEWORK; } 24 | 25 | public void Incrementar() 26 | { 27 | _valorAtual++; 28 | } 29 | } -------------------------------------------------------------------------------- /APIContagem/Controllers/ContadorController.cs: -------------------------------------------------------------------------------- 1 | using Microsoft.AspNetCore.Mvc; 2 | using APIContagem.Models; 3 | using APIContagem.Logging; 4 | 5 | namespace APIContagem.Controllers; 6 | 7 | [ApiController] 8 | [Route("[controller]")] 9 | public class ContadorController : ControllerBase 10 | { 11 | private static readonly Contador _CONTADOR = new Contador(); 12 | private readonly ILogger _logger; 13 | private readonly IConfiguration _configuration; 14 | 15 | public ContadorController(ILogger logger, 16 | IConfiguration configuration) 17 | { 18 | _logger = logger; 19 | _configuration = configuration; 20 | } 21 | 22 | [HttpGet] 23 | public ResultadoContador Get() 24 | { 25 | int valorAtualContador; 26 | 27 | lock (_CONTADOR) 28 | { 29 | _CONTADOR.Incrementar(); 30 | valorAtualContador = _CONTADOR.ValorAtual; 31 | } 32 | 33 | _logger.LogValorAtual(valorAtualContador); 34 | 35 | return new() 36 | { 37 | ValorAtual = valorAtualContador, 38 | Producer = _CONTADOR.Local, 39 | Kernel = _CONTADOR.Kernel, 40 | Framework = _CONTADOR.Framework, 41 | Mensagem = _configuration["MensagemVariavel"] 42 | }; 43 | }} 44 | -------------------------------------------------------------------------------- /APIContagem/Logging/ContagemLogging.cs: -------------------------------------------------------------------------------- 1 | namespace APIContagem.Logging; 2 | 3 | public static partial class ContagemLogging 4 | { 5 | [LoggerMessage(EventId = 1, Level = LogLevel.Information, 6 | Message = "Contador - Valor atual: {valorAtual}")] 7 | public static partial void LogValorAtual( 8 | this ILogger logger, int valorAtual); 9 | } -------------------------------------------------------------------------------- /APIContagem/Models/ResultadoContador.cs: -------------------------------------------------------------------------------- 1 | namespace APIContagem.Models; 2 | 3 | public class ResultadoContador 4 | { 5 | public int ValorAtual { get; set; } 6 | public string? Producer { get; set; } 7 | public string? Kernel { get; set; } 8 | public string? Framework { get; set; } 9 | public string? Mensagem { get; set; } 10 | } -------------------------------------------------------------------------------- /APIContagem/Program.cs: -------------------------------------------------------------------------------- 1 | using AspNetCoreRateLimit; 2 | using APIContagem; 3 | 4 | var builder = WebApplication.CreateBuilder(args); 5 | 6 | #region Configurações de Rate Limit 7 | 8 | var useAspNetCoreRateLimit = Convert.ToBoolean(builder.Configuration["UseAspNetCoreRateLimit"]); 9 | if (useAspNetCoreRateLimit) 10 | { 11 | builder.Services.AddStackExchangeRedisCache(options => 12 | { 13 | options.Configuration = builder.Configuration.GetConnectionString("Redis"); 14 | options.InstanceName = nameof(APIContagem); 15 | }); 16 | 17 | RateLimitExtensions.Initialize(builder.Configuration); 18 | 19 | builder.Services.Configure(options => 20 | { 21 | options.EnableEndpointRateLimiting = true; 22 | options.StackBlockedRequests = false; 23 | options.HttpStatusCode = 429; 24 | options.ClientIdHeader = RateLimitExtensions.ClientIdHeaderName; 25 | options.GeneralRules = new List 26 | { 27 | new RateLimitRule 28 | { 29 | Endpoint = "GET:/contador", 30 | Period = RateLimitExtensions.Period, 31 | Limit = RateLimitExtensions.Limit, 32 | QuotaExceededResponse = new () 33 | { 34 | ContentType = "application/text", 35 | Content = RateLimitExtensions.QuotaExceededMessage 36 | } 37 | } 38 | }; 39 | }); 40 | 41 | builder.Services.AddSingleton(); 42 | builder.Services.AddSingleton(); 43 | builder.Services.AddSingleton(); 44 | builder.Services.AddDistributedRateLimiting(); 45 | } 46 | 47 | #endregion 48 | 49 | builder.Services.AddControllers(); 50 | builder.Services.AddEndpointsApiExplorer(); 51 | builder.Services.AddSwaggerGen(); 52 | 53 | var app = builder.Build(); 54 | 55 | #region Ativando o middleware de Rate Limit 56 | if (useAspNetCoreRateLimit) 57 | app.UseClientRateLimiting(); 58 | #endregion 59 | 60 | app.UseSwagger(); 61 | app.UseSwaggerUI(); 62 | 63 | app.UseHttpsRedirection(); 64 | 65 | app.UseAuthorization(); 66 | 67 | app.MapControllers(); 68 | 69 | app.Run(); -------------------------------------------------------------------------------- /APIContagem/Properties/launchSettings.json: -------------------------------------------------------------------------------- 1 | { 2 | "$schema": "https://json.schemastore.org/launchsettings.json", 3 | "iisSettings": { 4 | "windowsAuthentication": false, 5 | "anonymousAuthentication": true, 6 | "iisExpress": { 7 | "applicationUrl": "http://localhost:52386", 8 | "sslPort": 44398 9 | } 10 | }, 11 | "profiles": { 12 | "APIContagem": { 13 | "commandName": "Project", 14 | "dotnetRunMessages": true, 15 | "launchBrowser": true, 16 | "launchUrl": "swagger", 17 | "applicationUrl": "https://localhost:7196;http://localhost:5122", 18 | "environmentVariables": { 19 | "ASPNETCORE_ENVIRONMENT": "Development" 20 | } 21 | }, 22 | "IIS Express": { 23 | "commandName": "IISExpress", 24 | "launchBrowser": true, 25 | "launchUrl": "swagger", 26 | "environmentVariables": { 27 | "ASPNETCORE_ENVIRONMENT": "Development" 28 | } 29 | } 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /APIContagem/RateLimitExtensions.cs: -------------------------------------------------------------------------------- 1 | namespace APIContagem; 2 | 3 | public static class RateLimitExtensions 4 | { 5 | private static int _limit; 6 | public static int Limit { get => _limit; } 7 | 8 | private static string? _period; 9 | public static string? Period { get => _period; } 10 | 11 | private static string? _quotaExceededMessage; 12 | public static string? QuotaExceededMessage { get => _quotaExceededMessage; } 13 | 14 | private static string? _clientIdHeaderName; 15 | public static string? ClientIdHeaderName { get => _clientIdHeaderName; } 16 | 17 | public static void Initialize(IConfiguration configuration) 18 | { 19 | _limit = Convert.ToInt32(configuration["AspNetCoreRateLimit:RequestsLimit"]); 20 | _period = configuration["AspNetCoreRateLimit:Period"]; 21 | _quotaExceededMessage = 22 | $"Limite de utilização atingido: {_limit} requisições a cada {_period} para cada Subscription! Aguarde e tente novamente..."; 23 | _clientIdHeaderName = configuration["AspNetCoreRateLimit:ClientIdHeader"]; 24 | } 25 | } -------------------------------------------------------------------------------- /APIContagem/appsettings.Development.json: -------------------------------------------------------------------------------- 1 | { 2 | "Logging": { 3 | "LogLevel": { 4 | "Default": "Information", 5 | "Microsoft.AspNetCore": "Warning" 6 | } 7 | } 8 | } 9 | -------------------------------------------------------------------------------- /APIContagem/appsettings.json: -------------------------------------------------------------------------------- 1 | { 2 | "UseAspNetCoreRateLimit": true, 3 | "AspNetCoreRateLimit": { 4 | "RequestsLimit": 7, 5 | "Period": "15s", 6 | "ClientIdHeader": "Ocp-Apim-Subscription-Key" 7 | }, 8 | "MensagemVariavel": "Testes com .NET 6 + ASP.NET Core + AspNetCoreRateLimit", 9 | "ConnectionStrings": { 10 | "Redis": "localhost:6379" 11 | }, 12 | "Logging": { 13 | "LogLevel": { 14 | "Default": "Information", 15 | "Microsoft.AspNetCore": "Warning" 16 | } 17 | }, 18 | "AllowedHosts": "*", 19 | "Kestrel": { 20 | "Endpoints": { 21 | "HTTP": { 22 | "Url": "http://localhost:5000" 23 | } 24 | } 25 | } 26 | } -------------------------------------------------------------------------------- /DockerCompose/.vscode/redis-xplorer.redis: -------------------------------------------------------------------------------- 1 | {"absexp":"637961851471165627","sldexp":"-1","data":"{\"Timestamp\":\"2022-08-15T18:32:11.0141619Z\",\"Count\":3.0}"} -------------------------------------------------------------------------------- /DockerCompose/.vscode/settings.json: -------------------------------------------------------------------------------- 1 | { 2 | "redisXplorer.config": { 3 | "profiles": [ 4 | { 5 | "name": "redislocal", 6 | "host": "localhost", 7 | "accessKey": "", 8 | "filter": "*", 9 | "port": "6379" 10 | } 11 | ], 12 | "scanLimit": 200 13 | } 14 | } -------------------------------------------------------------------------------- /DockerCompose/docker-compose.yml: -------------------------------------------------------------------------------- 1 | services: 2 | redis: 3 | image: redis:alpine 4 | ports: 5 | - "6379:6379" -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ASPNETCore6-REST_API-RateLimitMiddleware-ClientId-CacheRedis_ContagemAcessos 2 | Exemplo de API REST para contagem de acessos criada com .NET 6 + ASP.NET Core e que faz uso do projeto AspNetCoreRateLimit + cache distribuído com Redis para testes de Rate Limit (com um Header de Subscription/Client Id). Inclui um Worker Service que consome a API e implementa o pattern Fallback com Polly para tratamento de falhas, além de um script do Docker Compose para utilização de uma instância do Redis. -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/.vscode/launch.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "0.2.0", 3 | "configurations": [ 4 | { 5 | // Use IntelliSense to find out which attributes exist for C# debugging 6 | // Use hover for the description of the existing attributes 7 | // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md 8 | "name": ".NET Core Launch (console)", 9 | "type": "coreclr", 10 | "request": "launch", 11 | "preLaunchTask": "build", 12 | // If you have changed target frameworks, make sure to update the program path. 13 | "program": "${workspaceFolder}/bin/Debug/net6.0/WorkerConsumoAPIContagem.dll", 14 | "args": [], 15 | "cwd": "${workspaceFolder}", 16 | // For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console 17 | "console": "internalConsole", 18 | "stopAtEntry": false 19 | }, 20 | { 21 | "name": ".NET Core Attach", 22 | "type": "coreclr", 23 | "request": "attach" 24 | } 25 | ] 26 | } -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/.vscode/tasks.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "2.0.0", 3 | "tasks": [ 4 | { 5 | "label": "build", 6 | "command": "dotnet", 7 | "type": "process", 8 | "args": [ 9 | "build", 10 | "${workspaceFolder}/WorkerConsumoAPIContagem.csproj", 11 | "/property:GenerateFullPaths=true", 12 | "/consoleloggerparameters:NoSummary" 13 | ], 14 | "problemMatcher": "$msCompile" 15 | }, 16 | { 17 | "label": "publish", 18 | "command": "dotnet", 19 | "type": "process", 20 | "args": [ 21 | "publish", 22 | "${workspaceFolder}/WorkerConsumoAPIContagem.csproj", 23 | "/property:GenerateFullPaths=true", 24 | "/consoleloggerparameters:NoSummary" 25 | ], 26 | "problemMatcher": "$msCompile" 27 | }, 28 | { 29 | "label": "watch", 30 | "command": "dotnet", 31 | "type": "process", 32 | "args": [ 33 | "watch", 34 | "run", 35 | "${workspaceFolder}/WorkerConsumoAPIContagem.csproj", 36 | "/property:GenerateFullPaths=true", 37 | "/consoleloggerparameters:NoSummary" 38 | ], 39 | "problemMatcher": "$msCompile" 40 | } 41 | ] 42 | } -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/Models/ResultadoContador.cs: -------------------------------------------------------------------------------- 1 | namespace WorkerConsumoAPIContagem.Models; 2 | 3 | public class ResultadoContador 4 | { 5 | public int? ValorAtual { get; set; } 6 | public string? Mensagem{ get; set; } 7 | } -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/Program.cs: -------------------------------------------------------------------------------- 1 | using WorkerConsumoAPIContagem; 2 | using WorkerConsumoAPIContagem.Resilience; 3 | 4 | IHost host = Host.CreateDefaultBuilder(args) 5 | .ConfigureServices((context, services) => 6 | { 7 | services.AddSingleton(FallbackContagem.CreateFallbackPolicy()); 8 | services.AddHostedService(); 9 | }) 10 | .Build(); 11 | 12 | await host.RunAsync(); -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/Properties/launchSettings.json: -------------------------------------------------------------------------------- 1 | { 2 | "profiles": { 3 | "WorkerConsumoAPIContagem": { 4 | "commandName": "Project", 5 | "dotnetRunMessages": true, 6 | "environmentVariables": { 7 | "DOTNET_ENVIRONMENT": "Development" 8 | } 9 | } 10 | } 11 | } 12 | -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/Resilience/FallbackContagem.cs: -------------------------------------------------------------------------------- 1 | using System.Net; 2 | using Polly; 3 | using Polly.Fallback; 4 | using WorkerConsumoAPIContagem.Models; 5 | 6 | namespace WorkerConsumoAPIContagem.Resilience; 7 | 8 | public static class FallbackContagem 9 | { 10 | public static AsyncFallbackPolicy CreateFallbackPolicy() 11 | { 12 | return Policy 13 | .Handle(ex => ex.StatusCode == HttpStatusCode.TooManyRequests) 14 | .FallbackAsync( 15 | fallbackAction: (_, _) => 16 | { 17 | Console.Out.WriteLineAsync(); 18 | PrintStatusFallback( 19 | "Too Many Requests = 429 | Gerando o valor alternativo via Policy de Fallback (fallbackAction)..."); 20 | Console.Out.WriteLineAsync(); 21 | 22 | return Task.FromResult(new ResultadoContador() 23 | { 24 | ValorAtual = -1, 25 | Mensagem = "Valor gerado na Policy de Fallback" 26 | }); 27 | }, 28 | onFallbackAsync: (responseToFailedRequest, _) => 29 | { 30 | Console.Out.WriteLineAsync(); 31 | PrintStatusFallback( 32 | "Iniciando a execução da Policy de Fallback (onFallbackAsync) | " + 33 | $"Descrição da falha: {responseToFailedRequest.Exception.Message}"); 34 | return Task.CompletedTask; 35 | }); 36 | } 37 | 38 | private static void PrintStatusFallback(string status) 39 | { 40 | var previousForegroundColor = Console.ForegroundColor; 41 | Console.ForegroundColor = ConsoleColor.Yellow; 42 | Console.Out.WriteLineAsync($" ***** {status} **** "); 43 | Console.ForegroundColor = previousForegroundColor; 44 | } 45 | } -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/Worker.cs: -------------------------------------------------------------------------------- 1 | using System.Net.Http.Json; 2 | using WorkerConsumoAPIContagem.Models; 3 | using Polly.Fallback; 4 | 5 | namespace WorkerConsumoAPIContagem; 6 | 7 | public class Worker : BackgroundService 8 | { 9 | private const string NAME_APIM_KEY = "Ocp-Apim-Subscription-Key"; 10 | private readonly ILogger _logger; 11 | private readonly IConfiguration _configuration; 12 | private readonly AsyncFallbackPolicy _resiliencePolicy; 13 | 14 | public Worker(ILogger logger, 15 | IConfiguration configuration, 16 | AsyncFallbackPolicy resiliencePolicy) 17 | { 18 | _logger = logger; 19 | _configuration = configuration; 20 | _resiliencePolicy = resiliencePolicy; 21 | } 22 | 23 | protected override async Task ExecuteAsync(CancellationToken stoppingToken) 24 | { 25 | var httpClient = new HttpClient(); 26 | httpClient.DefaultRequestHeaders.Add( 27 | NAME_APIM_KEY, _configuration[NAME_APIM_KEY]); 28 | 29 | var urlApiContagem = _configuration["UrlApiContagem"]; 30 | 31 | while (!stoppingToken.IsCancellationRequested) 32 | { 33 | try 34 | { 35 | var resultado = await _resiliencePolicy.ExecuteAsync(() => 36 | { 37 | return httpClient 38 | .GetFromJsonAsync(urlApiContagem)!; 39 | }); 40 | 41 | _logger.LogInformation($"* {DateTime.Now:HH:mm:ss} * " + 42 | $"Contador = {resultado.ValorAtual} | " + 43 | $"Mensagem = {resultado.Mensagem}"); 44 | } 45 | catch (Exception ex) 46 | { 47 | _logger.LogError($"# {DateTime.Now:HH:mm:ss} # " + 48 | $"Falha ao invocar a API: {ex.GetType().FullName} | {ex.Message}"); 49 | } 50 | 51 | await Task.Delay(1000, stoppingToken); 52 | } 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/WorkerConsumoAPIContagem.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | net6.0 5 | enable 6 | enable 7 | dotnet-WorkerConsumoAPIContagem-2B0A6CC6-9EF7-4D82-B1C9-2D4FD4E49068 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/WorkerConsumoAPIContagem.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Version 17 4 | VisualStudioVersion = 17.1.31911.260 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "WorkerConsumoAPIContagem", "WorkerConsumoAPIContagem.csproj", "{C5012BCF-36BD-450C-B307-D420F9DB4D4D}" 7 | EndProject 8 | Global 9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 10 | Debug|Any CPU = Debug|Any CPU 11 | Release|Any CPU = Release|Any CPU 12 | EndGlobalSection 13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 14 | {C5012BCF-36BD-450C-B307-D420F9DB4D4D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 15 | {C5012BCF-36BD-450C-B307-D420F9DB4D4D}.Debug|Any CPU.Build.0 = Debug|Any CPU 16 | {C5012BCF-36BD-450C-B307-D420F9DB4D4D}.Release|Any CPU.ActiveCfg = Release|Any CPU 17 | {C5012BCF-36BD-450C-B307-D420F9DB4D4D}.Release|Any CPU.Build.0 = Release|Any CPU 18 | EndGlobalSection 19 | GlobalSection(SolutionProperties) = preSolution 20 | HideSolutionNode = FALSE 21 | EndGlobalSection 22 | GlobalSection(ExtensibilityGlobals) = postSolution 23 | SolutionGuid = {451ECF76-A6CC-469D-8DAB-AB54B8FB8237} 24 | EndGlobalSection 25 | EndGlobal 26 | -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/appsettings.Development.json: -------------------------------------------------------------------------------- 1 | { 2 | "Logging": { 3 | "LogLevel": { 4 | "Default": "Information", 5 | "Microsoft.Hosting.Lifetime": "Information" 6 | } 7 | } 8 | } 9 | -------------------------------------------------------------------------------- /WorkerConsumoAPIContagem/appsettings.json: -------------------------------------------------------------------------------- 1 | { 2 | "Ocp-Apim-Subscription-Key": "workerconsumoapicontagem01", 3 | "UrlApiContagem": "http://localhost:5000/contador", 4 | "Logging": { 5 | "LogLevel": { 6 | "Default": "Information", 7 | "Microsoft.Hosting.Lifetime": "Information" 8 | } 9 | } 10 | } --------------------------------------------------------------------------------