java - Detect file changes in Spring Integration -

use case: want listen file directory, , every time makes change on file, want start process.

this configuration far:

<int-file:inbound-channel-adapter directory="${dir}" auto-startup="${auto.startup}" prevent-duplicates="true" filter="inputfilefilter" channel=ruleschannel">     <int:poller fixed-delay="${delay}" /> </int-file:inbound-channel-adapter> 

where inputfilefilteris custom bean , ruleschannel processing later.

the inputfilefilter takes array of files , returns list of files, sorted on file ending. seems pulling endlessly, , "prevent-duplicates"-check done after filter (i.e. file added, seems it's not sent ruleschannel).

anyway, problem need whole thing pick file changes, not new files. mainly, it's configuration file being changed every , then, , need update keep in sync.

yes, horrible solution over, it's not call, , seems have no choice.

any ideas?

edit: i've played bit around http://docs.spring.io/spring-integration/reference/html/files.html#_watchservicedirectoryscanner see if perhaps copy class , use standardwatcheventkinds.entry_modify doesnt seem help.

basically, if had way "start thread , keep running", fine well.

what had implement own defaultdirectoryscanner.

it registers watcher @ startup, , checks watcher when receives request inbound-channel-adapter through listeligibleitems(..)

to able handle 2 separate file directories, added 2 different watchers , 2 different file pollers. ensure readability in code , avoid hacking way around "directory"-part of inbound-channel-adapter.