Startup.cs

// ------------------------------------------------------------------------
// Copyright 2021 The Dapr Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//     http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------

namespace SecretStoreConfigurationProviderSample;

using System.Text.Json;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.DependencyInjection;

/// <summary>
/// Startup class.
/// </summary>
public class Startup
{
    /// <summary>
    /// Initializes a new instance of the <see cref="Startup"/> class.
    /// </summary>
    /// <param name="configuration">Configuration.</param>
    public Startup(IConfiguration configuration)
    {
        this.Configuration = configuration;
    }

    /// <summary>
    /// Gets the configuration.
    /// </summary>
    public IConfiguration Configuration { get; }

    /// <summary>
    /// Configures Services.
    /// </summary>
    /// <param name="services">Service Collection.</param>
    public void ConfigureServices(IServiceCollection services)
    {

    }

    /// <summary>
    /// Configures Application Builder and WebHost environment.
    /// </summary>
    /// <param name="app">Application builder.</param>
    /// <param name="env">Webhost environment.</param>
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseRouting();

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapGet("secret", Secret);
        });

        async Task Secret(HttpContext context)
        {
            // Get secret from configuration!!!
            var secretValue = Configuration["super-secret"];

            context.Response.ContentType = "application/json";
            await JsonSerializer.SerializeAsync(context.Response.Body, secretValue);
        }
    }
}