Alastack.Consul

Alastack.Consul supports Configuration and Service Discovery with Hashicorp Consul.

Getting started

Install package from the .NET CLI

dotnet add package Alastack.Consul

Configuration and Registration

The following code snippet demonstrates using Configuration and Service Discovery with Hashicorp Consul:

var builder = WebApplication.CreateBuilder(args);
builder.Configuration.AddJsonFile("consul.json", true, true);
// Add Consul Configuration
builder.Configuration.AddConsulConfiguration();

// Add Consul Naming
builder.Services.AddConsulNaming(builder.Configuration);
builder.Services.AddControllers();

var app = builder.Build();
// Use HealthCheck Endpoint
app.UseHealthCheck("/health");
app.UseAuthorization();
app.MapControllers();

app.Run();

Dynamic Registration for AspNetCore

dotnet add package Alastack.Consul.AspNetCore

code snippet:

// builder.Services.AddConsulNaming(builder.Configuration);
builder.Services.AddConsulNaming(builder.Configuration).AddAspNetCore();

{
  "Consul": {
    "Agent": {
      "Datacenter": "dc1",
      "Address": "http://localhost:8500",
      "WaitTime": "00:00:05"
    },
    "Registration": {
      "Name": "DynamicInstanceSample",
      "Version": "1.0.0",
      "Metadata": {
      }
    }
  }
}

All Config properties

{
  "Consul": {
    "Agent": {
      "Datacenter": "dc1", // Default to "dc1"
      "Address": "http://localhost:8500",
      "Token": "045ee828-2fa4-45b7-b01d-d9fb3937da54", // Default to null
      "WaitTime": "00:00:05" // Default to null
    },
    "Configuration": {
      "PathBase": "/dotnet/aspnetsample",
      "Namespace": "public1", // Default to "public"
      "Sets": [
        {
          "Id": "appsettings.json"
          //"Group": "default"
        },
        {
          "Id": "config.json",
          "Group": "group1" // Default to "default"
        },
        {
          "Id": "config_other.json",
          "Group": "group1",
          "Optional": true, // Default to false
          "ReloadOnChange": true, // Default to false
          "PollingWaitTime": "00:00:10", // Default to 5s
          "IgnoreException": true, // Default to false
          "Description": "description" // Default to null
        }
      ],
      "Metadata": {
        "MyKey1": "MyValue1",
        "MyKey2": "MyValue2"
      }
    },
    "Registration": {
      //"IsEnabled": true, // Default to "true"
      "Name": "AspNetSample",
      "Version": "1.0.0", // Default to "1.0.0"
      "Instances": [
        {
          //"Id": "aspnetsample1", // Default to $"{registration.Name}@{registration.Address.Host}:{registration.Address.Port}"
          "Address": "http://localhost:5000",
          "Tags": [ "apiserver", "test", "http" ],
          "EnableTagOverride": true, // Default to false
          "HealthCheck": {
            //"CheckId": "AspNetSample_HealthCheck1", // Default to $"service:{options.Registration.Id}"
            //"Name": "AspNetSample_HealthCheck", // Default to $"Service '{options.Registration.Name}' check"
            "DeregisterCriticalServiceAfter": "00:01:00", // Default to null
            "Interval": "00:00:15", // Default to "00:00:15"
            "Health": "/health", // or absolute uri: http://127.0.0.1:5000/health
            "Timeout": "00:00:10" // Default to "00:00:10"
          }
        },
        {
          "Address": "https://localhost:5001",
          "Tags": [ "apiserver", "test", "https" ],
          "EnableTagOverride": true // Default to false
        }
      ],
      "HealthCheckDefault": {
        "DeregisterCriticalServiceAfter": "00:01:00",
        "Interval": "00:00:15",
        "Health": "/health",
        "Timeout": "00:00:10"
      },
      "Metadata": {
        //"RegistrationIdNullPolicy": "Default" // or "Consul"
      }
    }
  }
}

Configuration in Consul Key/Value store

Using Winton.Extensions.Configuration.Consul to provide Consul Configuration source.

Path key: {Configuration.PathBase} / {Configuration.Namespace} / {Set.Group} / {Set.Id}

Samples

Visit the samples folder.