private async Task<WriteResult> WriteNeighbour(string name, string content, IWriteableChannel channel = null) {
string result = null;
try {
LogFacade.Instance.LogDebug("Write to " + name + " with content: '" + content + "'");
var chan = channel ?? ChannelPrototype.NewInstance();
// Timeout is config
result = await chan.Write(name.ToString(), content, Configuration.Get(Constants.Configuration.ResponseLimit));
LogFacade.Instance.LogDebug("Neighbour (" + name + ") queried, with result '" + (result.IsNull() ? "<null>" : result));
}
catch (Exception ex) {
LogFacade.Instance.LogWarning("Neighbour (" + name + ") queried, general exception abend '" + RecurseException(ex) + "'");
}
return new WriteResult { Response = result, Name = name };
}
// A null neighbour is returned if cannot be reached
public async Task<Neighbour> QueryNeighbour(string name, IWriteableChannel channel = null) {
Neighbour n = null;
try {
Stopwatch watch = new Stopwatch();
watch.Start();
string result = (await WriteNeighbour(name.ToString(),
Builder.Create(new QueryRequest { Requester = Network.HostName, Timeout = Configuration.Get(Constants.Configuration.ResponseLimit) }),
channel)).Response;
n = result.IsNull() ? Neighbour.NonRespondingNeighbour(name) : Parser.As<Neighbour>(result);
watch.Stop();
n.LastRequestElapsedTime = watch.ElapsedMilliseconds;
}
catch (Exception ex) {
LogFacade.Instance.LogException("Neighbour write and parse failed for " + name, ex);
n = Neighbour.NonRespondingNeighbour(name);
}
LogFacade.Instance.LogDebug("QueryNeighbour " + name + " completed in " + n.LastRequestElapsedTime + " ms");
return n;
}
