static void ToJson(TraceData traceData, TimeSpan currentOffset, TextWriter payload)
{
string level;
if (!LevelMap.TryGetValue(traceData.EventType, out level))
{
level = "Verbose";
}
payload.Write("{");
var parentCollection = new ArrayList();
var delim = "";
WriteJsonProperty("Timestamp", traceData.DateTime, ref delim, payload, parentCollection);
WriteJsonProperty("Level", level, ref delim, payload, parentCollection);
WriteJsonProperty("MessageTemplate", traceData.MessageFormat ?? string.Empty, ref delim, payload, parentCollection);
// First (if any) Exception found in the message args
if (traceData.Exception != null)
{
WriteJsonProperty("Exception", traceData.Exception, ref delim, payload, parentCollection);
}
payload.Write(",\"Properties\":{");
var pdelim = "";
var seenKeys = new List <string>();
WriteJsonProperty(EventTypeKey, traceData.EventType, ref pdelim, payload, parentCollection);
seenKeys.Add(EventTypeKey);
if (traceData.Source != null)
{
WriteJsonProperty(SourceKey, traceData.Source, ref pdelim, payload, parentCollection);
seenKeys.Add(SourceKey);
WriteJsonProperty(EventIdKey, traceData.Id, ref pdelim, payload, parentCollection);
seenKeys.Add(EventIdKey);
}
WriteJsonProperty(ActivityIdKey, traceData.ActivityId, ref pdelim, payload, parentCollection);
seenKeys.Add(ActivityIdKey);
if (traceData.RelatedActivityId.HasValue)
{
WriteJsonProperty(RelatedActivityIdKey, traceData.RelatedActivityId, ref pdelim, payload, parentCollection);
seenKeys.Add(RelatedActivityIdKey);
}
if (traceData.Data != null && traceData.Data.Count > 0)
{
WriteJsonProperty("Data", traceData.Data, ref pdelim, payload, parentCollection);
seenKeys.Add("Data");
}
if (traceData.MessageArgs != null)
{
for (var i = 0; i < traceData.MessageArgs.Count; ++i)
{
var argKey = i.ToString(CultureInfo.InvariantCulture);
WriteJsonProperty(argKey, traceData.MessageArgs[i], ref pdelim, payload, parentCollection);
seenKeys.Add(argKey);
}
}
if (traceData.Properties != null)
{
foreach (var property in traceData.Properties)
{
var sanitizedKey = SanitizeKey(property.Key.ToString());
if (seenKeys.Contains(sanitizedKey))
{
continue;
}
seenKeys.Add(sanitizedKey);
WriteJsonProperty(sanitizedKey, property.Value, ref pdelim, payload, parentCollection);
}
}
payload.Write("}");
payload.Write("}");
}