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Blog-977327 - Adding sample for Role based annotation.
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‎Annotations/Role based annotation/AuthenticationService/AuthenticationService.csproj‎

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>net8.0</TargetFramework>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="BCrypt.Net-Next" Version="4.0.3" />
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<PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
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</ItemGroup>
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</Project>

‎Annotations/Role based annotation/AuthenticationService/AuthenticationService.csproj.user‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<PropertyGroup>
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<ActiveDebugProfile>IIS Express</ActiveDebugProfile>
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<Controller_SelectedScaffolderID>MvcControllerEmptyScaffolder</Controller_SelectedScaffolderID>
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<Controller_SelectedScaffolderCategoryPath>root/Common/MVC/Controller</Controller_SelectedScaffolderCategoryPath>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
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<DebuggerFlavor>ProjectDebugger</DebuggerFlavor>
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</PropertyGroup>
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</Project>

‎Annotations/Role based annotation/AuthenticationService/AuthenticationService.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.9.34723.18
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AuthenticationService", "AuthenticationService.csproj", "{7FC0F7C8-6F5B-4FDC-B22E-55CD333E0FA0}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{7FC0F7C8-6F5B-4FDC-B22E-55CD333E0FA0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{7FC0F7C8-6F5B-4FDC-B22E-55CD333E0FA0}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{7FC0F7C8-6F5B-4FDC-B22E-55CD333E0FA0}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{7FC0F7C8-6F5B-4FDC-B22E-55CD333E0FA0}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {7D63024A-BC8C-4438-AC15-FBD2D739D9FC}
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EndGlobalSection
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EndGlobal

‎Annotations/Role based annotation/AuthenticationService/Controllers/AuthenticationController.cs‎

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using AuthenticationService.Models;
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using Microsoft.AspNetCore.Mvc;
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using System.Text.Json;
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namespace Authentication.Controllers;
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[ApiController]
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[Route("api/[controller]")]
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public class AuthenticationController : ControllerBase
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{
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private static readonly string _userFilePath = "users.json";
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// Register the new user with the credentials like Username, Email ID and Password
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[HttpPost("register")]
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public IActionResult Register([FromBody] User newUser)
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{
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var Users = LoadUsers();
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if (Users.Any(u => u.Username == newUser.Username))
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{
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return BadRequest(new { message = "Username already exists" });
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}
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if (Users.Any(u => u.Email == newUser.Email))
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{
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return BadRequest(new { message = "Email already registered" });
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}
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newUser.Password = BCrypt.Net.BCrypt.HashPassword(newUser.Password);
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Users.Add(newUser);
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var json = JsonSerializer.Serialize(Users, new JsonSerializerOptions { WriteIndented = true });
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System.IO.File.WriteAllText(_userFilePath, json);
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return Ok(new { message = "User registered successfully" });
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}
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// Existing user can login using the credentials such as Email ID and password
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[HttpPost("login")]
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public IActionResult Login([FromBody] User login)
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{
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var Users = LoadUsers();
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var user = Users.FirstOrDefault(u => u.Email == login.Email);
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if (user == null || !BCrypt.Net.BCrypt.Verify(login.Password, user.Password))
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{
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return Unauthorized(new { message = "Invalid credentials" });
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}
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return Ok(new { username = user.Username, email = user.Email });
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}
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// 🔸 Load the user details from the local storage file
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private static List<User> LoadUsers()
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{
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if (!System.IO.File.Exists(_userFilePath))
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return new List<User>();
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var json = System.IO.File.ReadAllText(_userFilePath);
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return JsonSerializer.Deserialize<List<User>>(json) ?? new List<User>();
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}
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}

‎Annotations/Role based annotation/AuthenticationService/Models/User.cs‎

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namespace AuthenticationService.Models
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{
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/// <summary>
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/// Represents a user with basic authentication details.
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/// </summary>
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public class User
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{
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/// <summary>
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/// Gets or sets the username of the user.
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/// </summary>
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public string? Username { get; set; }
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/// <summary>
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/// Gets or sets the email address of the user.
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/// </summary>
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public string Email { get; set; }
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/// <summary>
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/// Gets or sets the password of the user.
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/// </summary>
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public string Password { get; set; }
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}
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}

‎Annotations/Role based annotation/AuthenticationService/Program.cs‎

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var builder = WebApplication.CreateBuilder(args);
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// Add services to the container.
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builder.Services.AddControllers();
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builder.Services.AddEndpointsApiExplorer();
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builder.Services.AddSwaggerGen();
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// ✅ Add CORS configuration BEFORE building the app
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builder.Services.AddCors(options =>
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{
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options.AddDefaultPolicy(policy =>
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{
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policy.AllowAnyOrigin()
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.AllowAnyHeader()
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.AllowAnyMethod();
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});
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});
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var app = builder.Build();
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// Configure the HTTP request pipeline.
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if (app.Environment.IsDevelopment())
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{
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app.UseSwagger();
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app.UseSwaggerUI();
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}
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// ✅ Use CORS middleware BEFORE authorization
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app.UseCors();
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app.UseHttpsRedirection();
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app.UseAuthorization();
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app.MapControllers();
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app.Run();

‎Annotations/Role based annotation/AuthenticationService/Properties/launchSettings.json‎

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{
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"$schema": "http://json.schemastore.org/launchsettings.json",
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"iisSettings": {
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"windowsAuthentication": false,
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"anonymousAuthentication": true,
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"iisExpress": {
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"applicationUrl": "http://localhost:19872",
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"sslPort": 44310
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}
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},
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"profiles": {
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"http": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"launchUrl": "swagger",
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"applicationUrl": "http://localhost:5063",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"https": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"launchUrl": "swagger",
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"applicationUrl": "https://localhost:7132;http://localhost:5063",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"IIS Express": {
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"commandName": "IISExpress",
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"launchBrowser": true,
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"launchUrl": "swagger",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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}
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}
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}

‎Annotations/Role based annotation/AuthenticationService/appsettings.Development.json‎

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

‎Annotations/Role based annotation/AuthenticationService/appsettings.json‎

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

‎Annotations/Role based annotation/AuthenticationService/users.json‎

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[
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{
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"Username": "John",
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"Email": "[email protected]",
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"Password": "$2a$11$1zW3U/d6DC56zxifl8nATuGMQ8zhM8gmyx1t3fFtXAQg8a.xD5cBG"
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},
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{
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"Username": "Andrew",
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"Email": "[email protected]",
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"Password": "$2a$11$lu2VT2RXFNqI5Up8DYSkUuo1nampE5REmWJXQEcsvD69.icuTXUta"
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},
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{
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"Username": "Janet",
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"Email": "[email protected]",
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"Password": "$2a$11$42zEoWxWxtReaL3Sgs9haer9Uxb3OnrWa1FM0T9icweSJphEimy/q"
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}
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]

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