Is it possible to set this Configuration key/value in Azure App Settings (or Environmental Vars?)

[PureKrome]

Hi 👋

Give this serilog configuration k/v's .. can this be set in Azure's App Settings or in Environmental Variables (which is what Azure does anyways):

Trying to set that Logentries token value.
It's the array, that's confusing me...

e.g. appsettings.production.json

 "Serilog": {
    "WriteTo": [
      {
        "Name": "Console"
      },
      {
        "Name": "Logentries",
        "Args": {
          "token": "SOME SECRET HERE",
          "outputTemplate": "{Level:u3}: {Message:lj}{NewLine}{Exception}"
        }
      }
    ]  
  }

[nblumhardt]

Hi @PureKrome 👋

Yes, it's possible, although unfortunately it's not an optimal process right now; I believe given your config above, the variable name will be something like: Serilog:WriteTo:1:Args:token where the 1 is an index into the WRITETO array. May need some exploration; I seem to recall there's an example out there somewhere. HTH!

[lucasmaj]

I have similar need for AzureBlobStorage. Details here: chriswill/serilog-sinks-azureblobstorage#47

I ended up with something similar to what is described here and then extended is some.

Basically I build the configuration twice. After first build of configuration I AddInMemoryCollection to overwrite the secrets/connectionstrings and use the second config to configure the logger.

Most importantly, I keep the paths ("Serilog:WriteTo:1:Args:connectionString") in appsettings.json and used that to know which keys to add in AddInMemoryCollection.

 var configurationBuilder = new ConfigurationBuilder()
                .AddJsonFile("appsettings.json", false, true)
                .AddEnvironmentVariables();

            IConfiguration configuration = configurationBuilder.Build();

            var pathsToInjectStorageConnectionString = configuration.GetSection("PathsToInjectStorageConnectionString").GetChildren().Select(section => section.Value);

            if (pathsToInjectStorageConnectionString.Any())
            {
                var storageConnectionString = new Dmp.Timelines.Backup(configuration["DmpAppStorageAccountName"], configuration["DmpAppStorageAccountKey"]).StorageAccount.ToString(true);
                configurationBuilder.AddInMemoryCollection(pathsToInjectStorageConnectionString.Select(path => new KeyValuePair<string, string>(path, storageConnectionString)));
                configuration = configurationBuilder.Build();
            }

            var loggerConfiguration = new LoggerConfiguration()
                .ReadFrom.Configuration(configuration);

[PureKrome]

@lucasmaj why build the config 2x. I didn't have to ....

[lucasmaj]

I guess in your situation the Serilog:WriteTo:1:Args:token was already an Environmental variable?

In my case the storage account name and key were two separate environment variables which needed to be combined into a connections string at run time.

[skomis-mm]

For a reference:

• Configuration: environment variables
• Configuration: bind an array

[SCC-BDuncan]

Anyone get a working example of this?

[PureKrome]

@SCC-BDuncan

it's something like this:

given the configuration file snippet:

 "Serilog": {
    "WriteTo": [
      {
        "Name": "Console"
      },
      {
        "Name": "Logentries",
        "Args": {
          "token": "SOME SECRET HERE",
          "outputTemplate": "{Level:u3}: {Message:lj}{NewLine}{Exception}"
        }
      }
    ]  
  }

in your env-vars (like Azure App Service) you would have

Key	Value	Notes
Serilog__WriteTo__1__Args__token	Some Secret Here	Works on all OS's
Serilog:WriteTo:1:Args:token	Some Secret Here	Might not work on some OS's because the : is reservered