ln.build/ln.build/secrets/SecretStorage.cs

using System.Collections.Generic;
using System.IO;
using System.IO.Enumeration;
using ln.json;
using ln.logging;

namespace ln.build.secrets
{
    public class SecretStorage
    {
        public string FileName { get; }
        Dictionary<string,string> secrets = new Dictionary<string, string>();

        public SecretStorage(string filename)
        {
            FileName = filename;
            LoadSecrets();
        }

        void LoadSecrets()
        {
            lock (this)
            {
                Logging.Log(LogLevel.INFO, "loading secrets from {0}", FileName);
                if (File.Exists(FileName))
                {
                    JSONObject secretsObject = JSONParser.ParseFile(FileName) as JSONObject;
                    foreach (string key in secretsObject.Keys)
                    {
                        secrets.Add(key, secretsObject[key].ToNative().ToString());
                    }
                }
            }
        }

        public string GetSecret(string key)
        {
            TryGetSecret(key, out string secret);
            return secret;
        }
        public bool TryGetSecret(string key, out string secret) => secrets.TryGetValue(key, out secret);
    }
}