public QueryStringMaskingRule(string field, params TextMaskingRule[] rules)
{
Field = field;
FieldMaskingRules.AddRange(rules);
Mask = new FuncMask(new Func <string, string>(target =>
{
var keyMap = new Dictionary <string, string>();
var copy = new Dictionary <string, string>();
var startIndex = target.IndexOf("?") + 1;
var payload = startIndex >= 1 ? target.Substring(startIndex) : target;
foreach (var param in payload?.Split('&')?.Select(x => x.Split('=')))
{
keyMap[param[0]] = param[1];
}
;
foreach (KeyValuePair <string, string> kvp in keyMap)
{
var rule = FindMaskingRule(kvp.Key);
if (rule != null)
{
var value = keyMap[kvp.Key].Trim();
copy[kvp.Key] = rule != null && rule.Mask != null ? rule.Mask.Mask(value) : Masks.DefaultMask.Mask(value);
}
else
{
copy[kvp.Key] = keyMap[kvp.Key];
}
}
return((startIndex >= 1 ? target.Substring(0, startIndex) : string.Empty) + String.Join("&", copy.Select(x => string.Format("{0}={1}", x.Key, x.Value)).ToArray()));
}));
}
public void Should_Mask_Json_Payload()
{
var id = Convert.ToString(Guid.NewGuid());
var apiLog = Utility.GetApiLog();
apiLog.Id = id;
List <PayloadFieldMaskingRule> rules = new List <PayloadFieldMaskingRule>();
IMask CreditCardMask = new FuncMask(CreditcardMask.Mask);
rules.Add(new PayloadFieldMaskingRule()
{
Path = "paymentMethod.cards[0].num", Mask = CreditCardMask
});
var jsonPayloadMaskingRule = new JsonPayloadMaskingRule("request", rules.ToArray());
var filter = new StreamLogMaskingFilter(new PayloadMaskingRule[] { jsonPayloadMaskingRule });
Assert.IsNotNull(filter.Rules);
var maskedLog = filter.Apply(apiLog);
var formatter = JsonLogFormatter.Instance;
var firehoseSink = Utility.GetFirehoseSink();
var redisSink = Utility.GetRedisSink();
var compositeSink = Utility.GetCompositeSink(formatter, redisSink, firehoseSink);
var logWriter = new LogWriter(formatter, compositeSink);
logWriter.WriteAsync(maskedLog).GetAwaiter().GetResult();
//Thread.Sleep(40000);
var logData = Utility.GetEsLogDataById(id);
var esLogId = string.Empty;
var expectedSubstring = "444455******5555";
string actualUrl;
logData.TryGetValue("request", out actualUrl);
var actual = Utility.GetOutputFromUrl(actualUrl);
var isMasked = actual.Contains(expectedSubstring);
Assert.IsTrue(isMasked);
}