Erlang 事件处理库:Rivus CEP

jopen 10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).

项目主页:http://www.open-open.com/lib/view/home/1389276590211