SubscriptionRecoveryPolicy get the message from message store
-------------------------------------------------------------

                 Key: AMQ-3766
                 URL: https://issues.apache.org/jira/browse/AMQ-3766
             Project: ActiveMQ
          Issue Type: Improvement
          Components: Broker
    Affects Versions: 5.5.1
            Reporter: liny


org.apache.activemq.broker.region.policy.SubscriptionRecoveryPolicy shall get 
message from message store based on subscriptionRecoveryPolicy setting in 
activemq.xml.
For example, a setup as below:
{quote}
<subscriptionRecoveryPolicy>
  <lastImageSubscriptionRecoveryPolicy/>
</subscriptionRecoveryPolicy>
{quote}
When a new topic subscriber, no matter durable or non-durable, connects to a 
topic, the subscriber can get the last message.
But after activemq server restarted, new subscriber can't get last message when 
connect to same topic, because last message only is kept in memory.
Current SubscriptionRecoveryPolicy won't prepare the last message from message 
store for new subscriber and needs to be enhanced to recover message based on 
policy setting.

Thank you very much!

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