[CAMEL-8639] Camel FTP component cannot recover after network failure

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.15.3, 2.16.0
• Component/s: camel-ftp
• Estimated Complexity: Novice
• Assignee: Claus Ibsen
• Reporter: Marcin Marzyński
• Created: 15/Apr/15 09:50
• Updated: 19/Jul/15 08:09
• Resolved: 18/Jul/15 07:36

Description

Camel FTP endpoint cannot recover by itself after network failure if no custom PollingConsumerPollStrategy is defined. Few years ago there was similar issue (https://issues.apache.org/jira/browse/CAMEL-1838), and it was fixed by adding in RemoteFileConsumer:
this.setPollStrategy(new RemoteFilePollingConsumerPollStrategy());

However it is broken again, as FtpEndpoint is overriding it with DefaultPollingConsumerPollStrategy in initConsumerProperties method, inherited from ScheduledPollEndpoint. I believe RemoteFilePollingConsumerPollStrategy should be used as default in RemoteFileEndpoint as well.

Adding this.setPollStrategy(new RemoteFilePollingConsumerPollStrategy()); in RemoteFilePollingConsumerPollStrategy should fix this issue.

Workaround for this bug is to create RemoteFilePollingConsumerPollStrategy in the registry and provide it directly to FTP endpoint by adding consumer.pollStrategy=#myRemoteFilePollingConsumerPollStrategyBeanId to the URL. This is also why FromFtpSimulateNetworkIssueRecoverTest didn't catch it - it's using custom PollingStrategy.

Issue Links

• is related to: CAMEL-1838 camel-ftp - Recover from lost connection issue