public async Task Init(ElencyConfiguration config)
{
if (config == null)
{
throw new Exception("You must define a configuration");
}
if (_initialized == true)
{
throw new Exception("The client is already initialised");
}
try
{
config.Validate();
_config = config;
_configurationPath = string.Format("/config/{0}/{1}/{2}",
_config.AppId,
_config.Environment,
_config.AppVersion);
}
catch (Exception ex)
{
throw ex;
}
if (_config.LocalConfiguration != null)
{
await GetLocalConfiguration();
return;
}
await GetConfiguration();
_initialized = true;
if (_config.RefreshInterval > 0)
{
_timerCallback = new TimerCallback(RefreshConfigurationOnInteval);
_timer = new Timer(_timerCallback, null, 0, _config.RefreshInterval);
}
}
public static string GenerateAuthorizationHeader(ElencyConfiguration config, string path, string method, bool hmac = false)
{
var dateTime1970 = new DateTime(1970, 1, 1);
var span = DateTime.UtcNow - dateTime1970;
var timestamp = span.TotalMilliseconds.ToString("0");
var nonce = Guid.NewGuid().ToString();
var value = string.Format("{0}{1}{2}{3}{4}",
config.AppId,
path.ToLower(),
method.ToLower(),
nonce,
timestamp);
var key = (hmac == true ? config.HMACAuthorizationKey : config.ConfigEncryptionKey);
var signature = HMACSHA256.Hash(value, key);
return(string.Format("{0}:{1}:{2}:{3}",
config.AppId,
signature,
nonce,
timestamp));
}