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Posted to issues@camel.apache.org by "Önder Sezgin (JIRA)" <ji...@apache.org> on 2017/11/23 20:17:00 UTC
[jira] [Resolved] (CAMEL-11656) Support default directory sorter
for FileConsumer
[ https://issues.apache.org/jira/browse/CAMEL-11656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Önder Sezgin resolved CAMEL-11656.
----------------------------------
Resolution: Fixed
Assignee: Önder Sezgin
> Support default directory sorter for FileConsumer
> -------------------------------------------------
>
> Key: CAMEL-11656
> URL: https://issues.apache.org/jira/browse/CAMEL-11656
> Project: Camel
> Issue Type: Improvement
> Components: camel-core
> Affects Versions: 2.19.0
> Reporter: Viktor Khoroshko
> Assignee: Önder Sezgin
> Priority: Minor
> Fix For: 2.21.0
>
>
> Hello,
> The current way of sorting consumed files isn't very flexible due to how it's implemented:
> Files are sorted AFTER they're added to in progress repository what in combination with *maxMessagesPerPoll* set to be > 0 and *eagerLimitMaxMessagesPerPoll* set to false forces the *removeExcessiveInProgressFiles* call - which in case of persistent idempotent repository used causes redundant calls to a database.
> This is not only the issue.
> In my case I have a logic in a custom file filter that a file shouldn't be processed if a file with a same prefix is already in progress while still those files should be processed in a specified order.
> The issue is that since sorting is performed after each file is added to in progress repository and before added there a file should be accepted by a filter but it will be not - as a previous file with a same prefix has already been added to in progress repo.
> *Example*: files - test.001, test.002, test.003
> If test.003 is first in a returned file list then it will be added to in progress repository and next files will not be accepted due to the same prefix.
> Default sorting would solve this issue.
> It would be great if default sorter can be specified for *FileConsumer* in the pollDirectory method:
> {code:java}
> log.trace("Polling directory: {}", directory.getPath());
> File[] dirFiles = directory.listFiles();
> if (dirFiles == null || dirFiles.length == 0) {
> // no files in this directory to poll
> if (log.isTraceEnabled()) {
> log.trace("No files found in directory: {}", directory.getPath());
> }
> return true;
> } else {
> // we found some files
> if (log.isTraceEnabled()) {
> log.trace("Found {} in directory: {}", dirFiles.length, directory.getPath());
> }
> }
> List<File> files = Arrays.asList(dirFiles);
> // sort there?
> {code}
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