I have a .NET project with ocelot:

using Ocelot.DependencyInjection;
using Ocelot.Middleware;

var builder = WebApplication.CreateBuilder(args);
builder.Configuration.AddJsonFile("ocelot.json", optional: false, reloadOnChange: true);

builder.Services.AddOcelot(builder.Configuration);
builder.Services.AddLogging(logging =>
{
    logging.AddConsole(); 
    logging.AddDebug();   
});

builder.Services.AddControllers();

var app = builder.Build();

await app.UseOcelot();
app.Run();

and i want to use ocelot as an entry point for all microservices; I want to split routes from different microservices into different files like:

folder ocelot-config with:

-a----         3/26/2025   2:36 PM            336 doctors.json
-a----         3/26/2025   2:35 PM            672 reviews.json

and i also have in the src foldere:

ocelot.json

The problem is when I try to add all files like:

builder.Configuration.AddJsonFile("ocelot.json", optional: false, reloadOnChange: true)
    .AddJsonFile("./ocelot-config/reviews.json", optional: false, reloadOnChange: true)
    .AddJsonFile("./ocelot-config/doctors.json", optional: false, reloadOnChange: true);

only the last one works. The last configuration overwrites previous ones.

How to separate different config files for different Microservices with Routes and then register them all?

I have a .NET project with ocelot:

using Ocelot.DependencyInjection;
using Ocelot.Middleware;

var builder = WebApplication.CreateBuilder(args);
builder.Configuration.AddJsonFile("ocelot.json", optional: false, reloadOnChange: true);

builder.Services.AddOcelot(builder.Configuration);
builder.Services.AddLogging(logging =>
{
    logging.AddConsole(); 
    logging.AddDebug();   
});

builder.Services.AddControllers();

var app = builder.Build();

await app.UseOcelot();
app.Run();

and i want to use ocelot as an entry point for all microservices; I want to split routes from different microservices into different files like:

folder ocelot-config with:

-a----         3/26/2025   2:36 PM            336 doctors.json
-a----         3/26/2025   2:35 PM            672 reviews.json

and i also have in the src foldere:

ocelot.json

The problem is when I try to add all files like:

builder.Configuration.AddJsonFile("ocelot.json", optional: false, reloadOnChange: true)
    .AddJsonFile("./ocelot-config/reviews.json", optional: false, reloadOnChange: true)
    .AddJsonFile("./ocelot-config/doctors.json", optional: false, reloadOnChange: true);

only the last one works. The last configuration overwrites previous ones.

How to separate different config files for different Microservices with Routes and then register them all?

• c#
• asp-core
• ocelot

1 Answer 1

The value in IConfigration share the same key would be overrided,you may see this document

A workaround for you is write the array in formart of object and append the index yourself

For example:

user.json:

{
  "GlobalConfiguration": {
    "BaseUrl": "https://localhost:7174"
  },
  "Routes:0": 
    {
      "UpstreamPathTemplate": "/gateway/user",
      "UpstreamHttpMethod": [ "Get" ],
      "DownstreamPathTemplate": "/api/user",
      "DownstreamScheme": "https",
      "DownstreamHostAndPorts": [
        {
          "Host": "localhost",
          "Port": 7019
        }
      ]
    }
  
}

product.json:

{
  "GlobalConfiguration": {
    "BaseUrl": "https://localhost:7174"
  },
  "Routes:1": 
    {
      "UpstreamPathTemplate": "/gateway/product",
      "UpstreamHttpMethod": [ "Get" ],
      "DownstreamPathTemplate": "/api/product",
      "DownstreamScheme": "https",
      "DownstreamHostAndPorts": [
        {
          "Host": "localhost",
          "Port": 7142
        }
      ]
    }
  
}

It works on myside: