Erlang 事件处理库：Rivus CEP
jopen
11年前
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).