Rivus CEPErlang 事件处理库
Rivus CEP 是一个 Erlang 库用于复杂的事件处理，使用声明式的类似 SQL 的 DSL 来定义事件流的操作。
示例代码：
application:start(rivus_cep).
QueryStr = "define correlation2 as
select ev1.eventparam1, ev2.eventparam2, sum(ev2.eventparam3)
from event1 as ev1, event2 as ev2
where ev1.eventparam2 = ev2.eventparam2
within 60 seconds; ".
Producer = event_producer_1.
{ok, SubscriberPid} = result_subscriber:start_link().
{ok, QueryPid} = rivus_cep:load_query(QueryStr, [Producer], [SubscriberPid], [{shared_streams, true}]).
%% create some evetnts
Event1 = {event1, gr1,b,10}.
Event2 = {event2, gr2,bbb,20}.
%% send the events
rivus_cep:notify(Producer, Event1).
rivus_cep:notify(Producer, Event2).
%% or if you don't care about the producers
rivus_cep:notify(Event1).
rivus_cep:notify(Event2).评论