public static string CreateHash <T, TResult>(this ProxyRequest <T, TResult> proxyRequest) where T : class
{
var sb = new StringBuilder();
sb.Append(typeof(T).FullName);
sb.Append(" - ");
sb.Append(proxyRequest.Method);
sb.Append(" - ");
sb.AddParameterRepresentations(proxyRequest.Parameters);
var bytes = Encoding.UTF8.GetBytes(sb.ToString());
var hashAlgorithm = new SHA256Managed();
var hash = hashAlgorithm.ComputeHash(bytes);
var key = Convert.ToBase64String(hash);
return(key);
}
public static byte[] GetHashBytes <T, TResult>(this ProxiedMethodInvocation <T, TResult> invocation, string scrambleString = null) where T : class
{
var sb = new StringBuilder();
sb.Append(typeof(T).FullName);
sb.Append(" - ");
sb.Append(invocation.Method);
sb.Append(" - ");
sb.AddParameterRepresentations(invocation.Parameters);
if (!string.IsNullOrEmpty(scrambleString))
{
sb.Append(" - ");
sb.Append(scrambleString);
}
var bytes = Encoding.UTF8.GetBytes(sb.ToString());
var hashAlgorithm = new SHA256Managed();
var hash = hashAlgorithm.ComputeHash(bytes);
return(hash);
}
private static void AddParameterRepresentations(this StringBuilder builder, object value)
{
if (value == null)
{
builder.Append(".null");
}
else if (value is string)
{
builder.Append("\"" + value + "\"");
}
else if (value is IEnumerable)
{
var ienum = (IEnumerable)value;
var collection = ienum.Cast <object>().ToArray();
builder.Append("[");
for (var i = 0; i < collection.Length; i++)
{
builder.AddParameterRepresentations(collection[i]);
if (i < collection.Length - 1)
{
builder.Append(",");
}
}
builder.Append("]");
}
else if (value is DateTime)
{
var dt = (DateTime)value;
builder.Append(dt.ToString(CultureInfo.InvariantCulture));
}
else if (value is Boolean)
{
builder.Append(((bool)value).ToString(CultureInfo.InvariantCulture));
}
else
{
builder.Append(value.ToString());
}
}