private bool msg_shoould_be_sent(Topic topic, RemoteAgent agent, object msg)
{
var topicFilter = get_topic_filter(topic.Guid, agent);
if (topicFilter == null)
return true;
if (topicFilter.Filters.IsEmpty())
return false; // topic has no listeners on target
if (topicFilter.FilterThrows)
return true; // there is a local filter but it throws (remote will recalculate filter)
try
{
var filterIsMatched = filter_is_matched(topicFilter.Filters, msg);
if (filterIsMatched)
return true;
}
catch (Exception ex)
{
topicFilter.FilterThrows = true;
_log.Warn(ex, "Failed to invoke remote filter for topic {0}", topic.ToJson());
}
// no matched filters
return false;
}
private FilteredTopic get_topic_filter(Guid topicGuid, RemoteAgent agent)
{
var all = _rrepo.GetFilteredTopics(agent);
if (all == null)
return null;
var query =
from filter in all
where filter.TopicGuid == topicGuid
select filter;
return
query.FirstOrDefault();
}
private RemoteAgent get_agent(string agentUri)
{
RemoteAgent agent;
if (_remotes.TryGetValue(agentUri, out agent))
return agent;
agent = new RemoteAgent
{
AgentUri = agentUri,
SnapshotId = 0,
};
_remotes.Add(agentUri, agent);
return agent;
}
FilteredTopic[] IRemoteRepo.GetFilteredTopics(RemoteAgent agent)
{
lock (_mutex) return _impl.GetFilteredTopics(agent);
}
FilteredTopic[] IRemoteRepo.GetFilteredTopics(RemoteAgent agent)
{
if (agent.FilteredTopics == null)
return null;
return
agent.FilteredTopics.ToArray();
}
