Custom Configuration Provider

CustomConfigurationProvider/Controllers/CustomConfigurationController.cs

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+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using YCompany.Configurations;
+
+namespace CustomConfigurationProvider.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class CustomConfigurationController : ControllerBase
+    {
+        private readonly IConfiguration _configuration;
+        public CustomConfigurationController(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+        [HttpGet]
+        public IActionResult Get()
+        {
+            var metadata = new SecurityMetaData
+            {
+                ApiKey = _configuration["ApiKey"],
+                ApiSecret = _configuration["ApiSecret"]
+            };
+            return Ok(metadata);
+        }
+    }
+}

CustomConfigurationProvider/CustomConfigurationExtensions.cs

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+using Microsoft.Extensions.Configuration;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace YCompany.Configurations
+{
+    public static class CustomConfigurationExtensions
+    {
+        public static IConfigurationBuilder AddSecurityConfiguration
+        (this IConfigurationBuilder builder)
+        {
+            return builder.Add(new CustomConfigurationSource());
+        }
+    }
+}

CustomConfigurationProvider/CustomConfigurationProvider.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using System.Text.Json;
+using Microsoft.Extensions.Configuration;
+
+namespace YCompany.Configurations
+{
+    public class CustomConfigurationProvider :ConfigurationProvider
+    {
+        public override void Load()
+        {
+            var text = File.ReadAllText(@"D:\SecurityMetadata.json");
+            var options = new JsonSerializerOptions
+            { PropertyNamingPolicy = JsonNamingPolicy.CamelCase };
+            var content = JsonSerializer.Deserialize<SecurityMetaData>
+           (text, options);
+            if (content != null)
+            {
+                var Data = new Dictionary<string, string>
+                {
+                    {"ApiKey", content.ApiKey},
+                    {"ApiSecret", content.ApiSecret}
+                };
+            }
+        }
+
+    }
+}

CustomConfigurationProvider/CustomConfigurationProvider.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
+  </ItemGroup>
+
+</Project>

CustomConfigurationProvider/CustomConfigurationProvider.csproj.user

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+</Project>

CustomConfigurationProvider/CustomConfigurationSource.cs

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+using Microsoft.Extensions.Configuration;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace YCompany.Configurations
+{
+    public class CustomConfigurationSource:IConfigurationSource
+
+    {
+        public IConfigurationProvider Build(IConfigurationBuilder builder)
+        {
+            return new CustomConfigurationProvider();
+        }
+    }
+}

CustomConfigurationProvider/Program.cs

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+using YCompany.Configurations;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+
+builder.Configuration.AddSecurityConfiguration();
+
+builder.Services.AddControllers();
+// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseHttpsRedirection();
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Run();

CustomConfigurationProvider/Properties/launchSettings.json

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+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:57907",
+      "sslPort": 44305
+    }
+  },
+  "profiles": {
+    "CustomConfigurationProvider": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "https://localhost:7007;http://localhost:5261",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

CustomConfigurationProvider/SecurityMetaData.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace YCompany.Configurations
+{
+    public class SecurityMetaData
+    {
+        public string ApiKey { get; set; }
+        public string ApiSecret { get; set; }
+    }
+}

CustomConfigurationProvider/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

CustomConfigurationProvider/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}