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the configuration file 'secrets.json' was not found and is not optional (.NET 6)

User Secrets error is being generated in a CI/CD pipeline, when secrets.json file shouldn't be expected.

Steps:

  1. Create .NET 5 project
  2. Added user secrets.
  3. Code runs locally and in CI/CD pipelines.
  4. Upgrade to .NET 6 project (and preview NuGet 6.* packages)

Code runs locally, but fails in CI/CD pipelines, with error:

"The configuration file 'secrets.json' was not found and is not optional."

Expected:

Code runs without the secrets.json file being present Configuration .NET 6, Microsoft.Extensions.Configuration.UserSecrets: 6.0.0-preview.1.21102.12

Regression? This works in .NET 5, Microsoft.Extensions.Configuration.UserSecrets: 5.0.0.*

System.IO.FileNotFoundException: The configuration file 'secrets.json' was not found and is not optional. The physical path is '/home/runner/work/UserSecretsRegression/UserSecretsRegression/UserSecrets/UserSecrets.Tests/bin/Release/net6.0/secrets.json'.
  Stack Trace:
      at Microsoft.Extensions.Configuration.FileConfigurationProvider.HandleException(ExceptionDispatchInfo info)
   at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load(Boolean reload)
   at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load()
   at Microsoft.Extensions.Configuration.ConfigurationRoot..ctor(IList`1 providers)
   at Microsoft.Extensions.Configuration.ConfigurationBuilder.Build()
   at UserSecrets.Tests.UnitTest1.TestMethod1() in /home/runner/work/UserSecretsRegression/UserSecretsRegression/UserSecrets/UserSecrets.Tests/UnitTest1.cs:line 13
4 months ago ·

Santiago Trujillo

3 answers
Answer question

0

https://github.com/dotnet/runtime/issues/48485

Basically, it's a new feature in .NET6 that 'secrets.json' is not optional by default!

AddUserSecrets(this IConfigurationBuilder configuration, Assembly assembly, bool optional);

That 'optional' parameter should be set to 'true' in your code.

 var configuration = new ConfigurationBuilder()
    .AddEnvironmentVariables()
    .AddCommandLine(args)
    .AddJsonFile("appsettings.json")
    .AddUserSecrets<Program>(true)
    .Build();
4 months ago · Santiago Trujillo Report

0

Unlike environment variables, user secrets are placed in a settings file similar to appsettings.json. Having similar structured off-project settings is great when you need to copy keys and values between files and there is support for adding, removing, and listing values as I will show you later in this post.

To understand user secrets, let's resume the example from the previous post. In there I had an appsettings.json file looking like this:

{
  "AppSettings": {
    "ConnectionString": "http://localhost:9000"
  },
  ...
}

In order to override the AppSettings:ConnectionString setting on individual machines, each user needs to add a user secret with the same name. The easiest approach is to right-click the project and select Manage User Secrets:

enter image description here

This creates and opens a new empty JSON file named secrets.json. The file is placed beneath C:\Users\<username>\AppData\Roaming\Microsoft\UserSecrets\<id> where <username> matches your Windows user and is a randomly generated GUID. The important thing to notice here is that the file is located outside your project directory. In order to "bind" the secrets.json file location to your project, Visual Studio added a bit of markup to the csproj file:

<PropertyGroup>
  <UserSecretsId>dda25df4-9a88-4a7e-8502-2134b74e4729</UserSecretsId>
</PropertyGroup>

In case you are not using Visual Studio, you can generate a random GUID and add the <UserSecretsId> manually.

In case you want to override the AppSettings:ConnectionString setting, add a similar structure to the secrets.json file:

{
  "AppSettings": {
    "ConnectionString": "http://localhost:9000?user=mehdidaustany&password=1234"
  }
}

You can also collapse settings like this:

{
  "AppSettings:ConnectionString": "http://localhost:9000?user=mehdidaustany&password=1234"
}

Finally add created secrets.json in the root of your project.

4 months ago · Santiago Trujillo Report

0

In .net 6.0, the application needs secret.json to run. in any case, if you are migrating from .net core 3.1 or .net 5.0 in order to run your application in .net 6.0:

  1. run dotnet user-secrets init in your project folder using command-line tools.
  2. make sure you have a secret.json file in your app domain ...\bin\Debug\net6.0. It doesn't matter if your secret.json file is empty for now.

Hit F5 and run your application!

4 months ago · Santiago Trujillo Report
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