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Ádám Kovács
2024-01-23 17:50:29 +01:00
parent 26b1f60948
commit 26e3226ae9
16 changed files with 307 additions and 0 deletions
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15
HealtRegistry/Containerfile Normal file
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FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build-env
WORKDIR /build
# Copy everything
COPY . ./
# Restore as distinct layers
RUN dotnet restore
# Build and publish a release
RUN dotnet publish -c Release -o out
# Build runtime image
FROM mcr.microsoft.com/dotnet/aspnet:8.0
WORKDIR /app
COPY --from=build-env /build/out .
ENTRYPOINT ["dotnet", "HealtRegistry.dll"]

15
HealtRegistry/HealtRegistry.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net8.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<InvariantGlobalization>true</InvariantGlobalization>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.0" />
<PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
</ItemGroup>
</Project>

18
HealtRegistry/HealtRegistry.http Normal file
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### Send health pdate for service 'test'
POST http://127.0.0.1:5081/health/test HTTP/1.0
### Set health of service 'test' to unhealthy
PUT http://127.0.0.1:5081/health/test HTTP/1.0
Content-Type: application/json
{
"health": false
}
### Set health of service 'test' to unhealthy
PUT https://healthr.adix.link/health/doorbell HTTP/1.0
Content-Type: application/json
{
"health": false
}

3
HealtRegistry/Models/HealthRequest.cs Normal file
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namespace HealtRegistry.Models;
public record HealthRequest(bool? Health);

3
HealtRegistry/Models/ServiceConfiguration.cs Normal file
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namespace HealtRegistry.Models;
public record ServiceConfiguration(bool DefaultValue, TimeSpan Timeout);

7
HealtRegistry/Models/ServiceHealthData.cs Normal file
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namespace HealtRegistry.Models;
public class ServiceHealthData
{
public required bool Healthy { get; set; }
public required DateTimeOffset LastUpdated { get; set; }
}

4
HealtRegistry/Models/ServiceHealthes.cs Normal file
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namespace HealtRegistry.Models;
public record ServiceHealth(bool Health);
public record ServiceHealthes(IReadOnlyDictionary<string, ServiceHealth> Healthes);

8
HealtRegistry/Models/ServicesConfiguration.cs Normal file
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using System.ComponentModel.DataAnnotations;
namespace HealtRegistry.Models;
public class ServicesConfiguration
{
[Required] public required Dictionary<string, ServiceConfiguration> Services { get; init; }
}

60
HealtRegistry/Program.cs Normal file
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using HealtRegistry.Models;
using HealtRegistry.Services;
using Microsoft.AspNetCore.Mvc;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
builder.Services.AddSingleton<IHealthService, HealthService>();
builder.Services.AddHostedService<HealthTimeoutService>();
builder.Services.AddOptions<ServicesConfiguration>()
.Bind(builder.Configuration)
.ValidateDataAnnotations();
if (builder.Environment.IsProduction())
{
builder.Configuration.AddJsonFile("/config/appsettings.json", optional: true, reloadOnChange: true);
}
var app = builder.Build();
// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
app.UseSwagger();
app.UseSwaggerUI();
}
app.MapPost("/health/{service}", ([FromRoute] string service, IHealthService healthService) =>
{
healthService.SetServiceHealth(service, true);
return Results.Ok();
})
.WithOpenApi();
app.MapPut("/health/{service}", ([FromRoute] string service, [FromBody] HealthRequest requestBody, IHealthService healthService, [FromServices] ILoggerFactory loggerFactory) =>
{
if (requestBody.Health.HasValue)
{
healthService.SetServiceHealth(service, requestBody.Health.Value);
}
else
{
var logger = loggerFactory.CreateLogger("Health");
logger.LogDebug("Health request body does not contains 'Health' property");
}
return Results.Ok();
})
.WithOpenApi();
app.MapGet("/status", (IHealthService healthService) =>
{
return healthService.GetServiceHealthes();
})
.WithOpenApi();
app.Run();

31
HealtRegistry/Properties/launchSettings.json Normal file
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{
"$schema": "http://json.schemastore.org/launchsettings.json",
"iisSettings": {
"windowsAuthentication": false,
"anonymousAuthentication": true,
"iisExpress": {
"applicationUrl": "http://localhost:48758",
"sslPort": 0
}
},
"profiles": {
"http": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": false,
"launchUrl": "swagger",
"applicationUrl": "http://localhost:5081",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"IIS Express": {
"commandName": "IISExpress",
"launchBrowser": false,
"launchUrl": "swagger",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
}
}
}

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HealtRegistry/Services/HealthService.cs Normal file
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using HealtRegistry.Models;
using Microsoft.Extensions.Options;
namespace HealtRegistry.Services;
public class HealthService : IHealthService
{
public Dictionary<string, ServiceHealthData> ServiceHealthes { get; } = new();
public HealthService(IOptions<ServicesConfiguration> servicesConfiguration)
{
foreach (var service in servicesConfiguration.Value.Services)
{
ServiceHealthes.Add(service.Key, new ServiceHealthData()
{
Healthy = service.Value.DefaultValue,
LastUpdated = DateTimeOffset.Now
});
}
}
public ServiceHealthes GetServiceHealthes()
{
var serviceHealthes = ServiceHealthes.ToDictionary(x => x.Key, x => new ServiceHealth(x.Value.Healthy));
return new ServiceHealthes(serviceHealthes);
}
public void SetServiceHealth(string serviceName, bool health)
{
ServiceHealthes[serviceName].Healthy = health;
ServiceHealthes[serviceName].LastUpdated = DateTimeOffset.Now;
}
}

51
HealtRegistry/Services/HealthTimeoutService.cs Normal file
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using HealtRegistry.Models;
using Microsoft.Extensions.Options;
namespace HealtRegistry.Services;
public class HealthTimeoutService : BackgroundService
{
private readonly IHealthService _healthService;
private readonly IOptionsMonitor<ServicesConfiguration> _servicesConfiguration;
private readonly ILogger<HealthTimeoutService> _logger;
public HealthTimeoutService(
IHealthService healthService,
IOptionsMonitor<ServicesConfiguration> servicesConfiguration,
ILogger<HealthTimeoutService> logger
)
{
_healthService = healthService;
_servicesConfiguration = servicesConfiguration;
_logger = logger;
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
var now = DateTimeOffset.Now;
foreach (var service in _healthService.ServiceHealthes)
{
if (!service.Value.Healthy) continue;
var serviceConfiguration = _servicesConfiguration.CurrentValue.Services.TryGetValue(service.Key, out var configuration)
? configuration
: null;
if (serviceConfiguration is not null &&
now - service.Value.LastUpdated > serviceConfiguration.Timeout)
{
_logger.LogInformation("Service {ServiceName} is timed out", service.Key);
_healthService.SetServiceHealth(service.Key, false);
}
}
try
{
await Task.Delay(1000, stoppingToken);
}
catch { }
}
}
}

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HealtRegistry/Services/IHealthService.cs Normal file
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using HealtRegistry.Models;
namespace HealtRegistry.Services;
public interface IHealthService
{
Dictionary<string, ServiceHealthData> ServiceHealthes { get; }
ServiceHealthes GetServiceHealthes();
void SetServiceHealth(string serviceName, bool health);
}

14
HealtRegistry/appsettings.Development.json Normal file
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{
"Services": {
"test": {
"DefaultValue": false,
"Timeout": "00:00:30"
}
},
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
}
}

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HealtRegistry/appsettings.json Normal file
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{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
},
"AllowedHosts": "*"
}

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healthr.sln Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.5.002.0
MinimumVisualStudioVersion = 10.0.40219.1
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "HealtRegistry", "HealtRegistry\HealtRegistry.csproj", "{68A78D32-0CD2-4D54-84BB-4D49651965F7}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{68A78D32-0CD2-4D54-84BB-4D49651965F7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{68A78D32-0CD2-4D54-84BB-4D49651965F7}.Debug|Any CPU.Build.0 = Debug|Any CPU
{68A78D32-0CD2-4D54-84BB-4D49651965F7}.Release|Any CPU.ActiveCfg = Release|Any CPU
{68A78D32-0CD2-4D54-84BB-4D49651965F7}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {4FF4B2FD-839C-49E5-B796-39DD55A59171}
EndGlobalSection
EndGlobal