/// <summary>
/// Write an object to JSON.
/// </summary>
/// <param name="writer">
/// The <see cref="JsonWriter"/> to write to.
/// </param>
/// <param name="value">
/// The value to write.
/// </param>
/// <param name="serializer">
/// The current <see cref="JsonSerializer"/>.
/// </param>
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
if (value is PrometheusValue prometheusValue)
{
writer.WriteStartArray();
writer.WriteValue(
UnixDateTime.ToUnix(prometheusValue.Timestamp)
);
if (prometheusValue.Value != null)
{
writer.WriteValue(prometheusValue.Value);
}
else
{
writer.WriteNull();
}
writer.WriteEndArray();
}
else if (value == null)
{
writer.WriteNull();
}
else
{
throw new JsonException("Expected PrometheusValue.");
}
}
public XmppHandlerResult ProcessElement(Presence element, XmppSession session, XmppHandlerContext context)
{
var result = Component();
if (!element.HasTo)
{
// send to itself available resource
foreach (var s in context.Sessions.GetSessions(element.From.BareJid).Where(s => s.Available))
{
var p = (Presence)element.Clone();
p.To = s.Jid;
result.Add(Send(s, p));
}
var last = new Last {
Value = element.Status, Seconds = UnixDateTime.ToUnix(DateTime.UtcNow)
};
context.Storages.Elements.SaveElement(session.Jid, agsXMPP.Uri.IQ_LAST, last);
// broadcast to subscribers
foreach (var to in context.Storages.Users.GetSubscribers(session.Jid))
{
foreach (var s in context.Sessions.GetSessions(to.BareJid).Where(s => s.Available))
{
var p = (Presence)element.Clone();
p.To = s.Jid;
result.Add(Send(s, p));
}
}
session.Presence = element;
}
return(result);
}
public XmppHandlerResult ProcessElement(LastIq element, XmppSession session, XmppHandlerContext context)
{
if (!element.HasTo)
{
return(Error(session, ErrorCondition.BadRequest, element));
}
if (element.Type == IqType.get)
{
var ri = context.Storages.Users.GetRosterItem(session.Jid, element.To);
if (ri == null || !ri.HasToSubscription())
{
return(Error(session, ErrorCondition.Forbidden, element));
}
}
if (element.Type == IqType.get && element.To.IsBare)
{
if (context.Sessions.GetSessions(element.To).Any())
{
element.Query.Seconds = 0;
}
else
{
var last = context.Storages.Elements.GetElement(element.To, agsXMPP.Uri.IQ_LAST) as Last;
if (last != null)
{
element.Query.Seconds = UnixDateTime.ToUnix(DateTime.UtcNow) - last.Seconds;
element.Query.Value = last.Value;
}
else
{
return(Error(session, ErrorCondition.ItemNotFound, element));
}
}
return(Send(session, element.ToResult()));
}
else if (element.To.IsFull)
{
var to = context.Sessions.GetSession(element.To);
if (to == null)
{
return(element.Type == IqType.get ? Error(session, ErrorCondition.RecipientUnavailable, element) : Void());
}
return(Request(to, element, Error(session, ErrorCondition.RecipientUnavailable, element)));
}
return(element.Type == IqType.get ? Error(session, ErrorCondition.ServiceUnavailable, element) : Void());
}
