1

我有以下策略:

  override val supervisorStrategy = OneForOneStrategy(10, 10.seconds) {
    case e: JedisConnectionException => Restart
    case e: Exception => Restart
  }

根据我的阅读(我认为我误解了),每当子演员抛出未捕获的异常时,它就会升级到父演员。根据我上面的规则,如果我的子演员总是在接收时抛出异常,不应该重新启动 10 次吗?

出于某种原因,从我的日志来看,它看起来只是重新启动一次,仅此而已。我将日志放在启动前和启动后。

编辑:

我意识到自己犯了一个错误:

我使用的是“context.system.actorof()”,这就是为什么没有一个儿童演员对这个策略做出反应。现在我正在使用“context.actorof()”,我确实看到异常被策略“捕获”了。

对于我的孩子演员,它需要与 redis 交谈以获取信息,我故意关闭我的 redis,所以孩子演员会失败,现在如果我将我的主管层设置为最多重启 10 次,我应该看到相同的堆栈跟踪 10 次吗?

我是否正确假设当一个子actor重新启动时,发送的相同消息会再次发送给它?

    2015-10-22 15:31:17,747 - [error] a.a.OneForOneStrategy - Error occurred trying to check for item existing in Redis:
java.lang.RuntimeException: Error occurred trying to check for item existing in Redis:
    at services.impl.RedisStatusServiceImpl.exists(RedisStatusServiceImpl.scala:62) ~[classes/:na]
    at w.c.Poller$$anonfun$process$1.apply(Poller.scala:64) ~[classes/:na]
    at w.c.Poller$$anonfun$process$1.apply(Poller.scala:58) ~[classes/:na]
    at scala.collection.immutable.List.foreach(List.scala:381) ~[scala-library-2.11.7.jar:na]
    at w.c.Poller.process(Poller.scala:58) ~[classes/:na]
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool
    at redis.clients.util.Pool.getResource(Pool.java:50) ~[jedis-2.7.3.jar:na]
    at redis.clients.jedis.JedisPool.getResource(JedisPool.java:99) ~[jedis-2.7.3.jar:na]
    at services.impl.RedisStatusServiceImpl.exists(RedisStatusServiceImpl.scala:58) ~[classes/:na]
    at w.c.Poller$$anonfun$process$1.apply(Poller.scala:64) ~[classes/:na]
    at w.c.Poller$$anonfun$process$1.apply(Poller.scala:58) ~[classes/:na]
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused
    at redis.clients.jedis.Connection.connect(Connection.java:164) ~[jedis-2.7.3.jar:na]
    at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:82) ~[jedis-2.7.3.jar:na]
    at redis.clients.jedis.BinaryJedis.connect(BinaryJedis.java:1641) ~[jedis-2.7.3.jar:na]
    at redis.clients.jedis.JedisFactory.makeObject(JedisFactory.java:85) ~[jedis-2.7.3.jar:na]
    at org.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:861) ~[commons-pool2-2.3.jar:2.3]
Caused by: java.net.ConnectException: Connection refused
    at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_05]
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345) ~[na:1.8.0_05]
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_05]
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_05]
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_05]
4

1 回答 1

2

是的,如果一个子actormaxNrOfRetries在时间窗口(在您的示例中为10秒)内达到(在您的情况下为10)重新启动,它将被停止。

例如,您可以在某些基本特征或抽象 Actor 类中定义全局supervisorStrategy。在这种情况下,您所有的 Actor 类都是该 BaseActor 的子类。

于 2015-10-22T16:40:02.530 回答