如何在本地环境中加载secrets.json而不是在ASP。NET核心?

我们正在使用 Azure应用程序配置 和 Azure密钥库 从加载配置。过去有四种环境: Development , QA , Staging , Production ,但现在我们也有 Local 环境。以前,我们使用 发展 为了地方发展,但现在 本地 是当地的。

问题是 secrets.json 未加载 本地 环境。它只加载 发展 .

本地环境配置源:

builder.Sources = ConfigurationManager.ConfigurationSources
  [0] = MemoryConfigurationSource
  [1] = EnvironmentVariablesConfigurationSource
  [2] = EnvironmentVariablesConfigurationSource
  [3] = JsonConfigurationSource ("appsettings.json")
  [4] = JsonConfigurationSource ("appsettings.Local.json")
  [5] = EnvironmentVariablesConfigurationSource
  [6] = ChainedConfigurationSource

开发环境配置源:

builder.Sources = ConfigurationManager.ConfigurationSources
  [0] = MemoryConfigurationSource
  [1] = EnvironmentVariablesConfigurationSource
  [2] = EnvironmentVariablesConfigurationSource
  [3] = JsonConfigurationSource ("appsettings.json") 
  [4] = JsonConfigurationSource ("appsettings.Development.json")
  [5] = JsonConfigurationSource ("secrets.json")  
  [6] = EnvironmentVariablesConfigurationSource
  [7] = ChainedConfigurationSource

我做了一些研究,并基于 https://learn.microsoft.com/en-us/aspnet/core/fundamentals/configuration/?view=aspnetcore-8.0#default-application-configuration-sources :

应用程序在开发环境中运行时的用户机密

我相信 secrets.json 仅适用于 发展 默认情况下。那么,我该如何将其转化为行为 本地 环境?

using Azure.Core;
using Microsoft.Extensions.Configuration.EnvironmentVariables;
using Microsoft.Extensions.Configuration.Json;
using RJO.BuildingBlocks.Common;
using RJO.BuildingBlocks.Common.Azure;
using RJO.BuildingBlocks.Common.Azure.AppConfiguration;
using System.Text.Json;

// ReSharper disable once CheckNamespace
namespace Microsoft.Extensions.Configuration;

public static class ConfigurationBuilderExtensions
{
    static readonly TimeSpan LocalCacheDuration = 24.Hours();

    public static IConfigurationBuilder AddAzureAppConfiguration(this IConfigurationBuilder builder, StartupLogger logger, string endpoint)
    {
        var azureAppConfigurationSource = new ChainedConfigurationSource
        {
            Configuration = builder.GetAzureAppConfiguration(logger, endpoint)
        };

        var nextSource = builder.Sources.FirstOrDefault(x => x is JsonConfigurationSource or EnvironmentVariablesConfigurationSource);
        if (nextSource != null)
        {
            // We insert the Azure source before the JSON and Environment sources so that those take precedence
            var indexOfNextSource = builder.Sources.IndexOf(nextSource);
            builder.Sources.Insert(indexOfNextSource, azureAppConfigurationSource);
        }
        else
            builder.Sources.Add(azureAppConfigurationSource);

        return builder;
    }

    static IConfiguration GetAzureAppConfiguration(this IConfigurationBuilder builder, StartupLogger logger, string endpoint)
    {
        const string secretsJsonFilename = "secrets.json";

        if (builder.Sources.FirstOrDefault(x => x is JsonConfigurationSource { Path: secretsJsonFilename }) is not JsonConfigurationSource secretsSource)
            return GetAzureAppConfiguration(logger, endpoint);

        // Check that there are actually some secrets stored (to ensure that caching only works on developer machines)
        var secrets = new ConfigurationBuilder().SetFileProvider(builder.GetFileProvider()).Add(secretsSource).Build().AsEnumerable();
        if (!secrets.Any())
            return GetAzureAppConfiguration(logger, endpoint);

        var fileInfo = secretsSource.FileProvider.GetFileInfo(secretsJsonFilename);
        var directory = Path.GetDirectoryName(fileInfo.PhysicalPath);
        var cacheFilename = Path.Join(directory, endpoint.Replace("https://", string.Empty) + ".cached.json");
        if (File.Exists(cacheFilename) && File.GetLastWriteTimeUtc(cacheFilename) > DateTime.UtcNow.Subtract(LocalCacheDuration))
        {
            var expiresIn = DateTime.UtcNow.Subtract(File.GetLastWriteTimeUtc(cacheFilename).Add(LocalCacheDuration)).Duration();
            logger.Info($"Using cached Azure App Configuration from {cacheFilename} (expires in {expiresIn.AsDuration()}) ...");
            return new ConfigurationBuilder().AddJsonFile(cacheFilename).Build();
        }

        logger.Info("Cached Azure App Configuration was not found or is expired ...");
        var configuration = GetAzureAppConfiguration(logger, endpoint);
        logger.Info($"Caching Azure App Configuration as {cacheFilename} (expires in {LocalCacheDuration.AsDuration()}) ...");
        var json = JsonSerializer.Serialize(new Dictionary<string, string>(configuration.AsEnumerable()));
        File.WriteAllText(cacheFilename, json);
        return configuration;
    }

    static IConfiguration GetAzureAppConfiguration(StartupLogger logger, string endpoint)
    {
        logger.Info("Authenticating with Azure App Configuration ...");

        var credential = AzureIdentity.HrvystCredential;
        var configuration = new ConfigurationBuilder()
            .AddAzureAppConfiguration(options => options
                .ConfigureClientOptions(x => x.AddPolicy(new LoggingPolicy(logger), HttpPipelinePosition.PerRetry))
                .Connect(new Uri(endpoint), credential)
                .ConfigureKeyVault(x => x.SetCredential(credential)))
            .Build();

        logger.Info("Finished loading Azure App Configuration.");
        return configuration;
    }
}