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From "dheitzer (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAMEL-11754) Apache Camel FTP getting Cannot retrieve file: RemoteFile error
Date Wed, 06 Sep 2017 13:38:00 GMT
dheitzer created CAMEL-11754:
--------------------------------

             Summary: Apache Camel FTP getting Cannot retrieve file: RemoteFile error
                 Key: CAMEL-11754
                 URL: https://issues.apache.org/jira/browse/CAMEL-11754
             Project: Camel
          Issue Type: Bug
          Components: camel-ftp
    Affects Versions: 2.19.0
         Environment: Windows 10 x64
jdk1.8.0_131
Camel 2.19.0
            Reporter: dheitzer


I'm receiving an error from the FTP Component when its processing files in Camel 2.19.0.

I'm trying to retrieve files using the Camel FTP component (Camel 2.19.0):

from("ftp://my.host.com:21/my/relative/directory?download=true&stepwise=false&delete=false")

{code:java}

org.apache.camel.component.file.GenericFileOperationFailedException: Cannot retrieve file:
RemoteFile[my/relative/directory/file1.txt] from: ftp://my.host.com:21/my/relative/directory?delete=false&download=true&stepwise=false
    at org.apache.camel.component.file.GenericFileConsumer.processExchange(GenericFileConsumer.java:427)
    at org.apache.camel.component.file.remote.RemoteFileConsumer.processExchange(RemoteFileConsumer.java:137)
    at org.apache.camel.component.file.GenericFileConsumer.processBatch(GenericFileConsumer.java:218)
    at org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:182)
    at org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:174)
    at org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:101)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:748)
{code}

>From the TRACE logs, I can see that Camel is listing the files in the directory correctly:

{code:java}

[TRACE] 2017-09-05 11:40:49,438 org.apache.camel.component.file.remote.FtpConsumer - Polling
directory: my/relative/directory
[TRACE] 2017-09-05 11:40:51,748 org.apache.camel.component.file.remote.FtpOperations - listFiles(my/relative/directory)
[TRACE] 2017-09-05 11:40:58,657 org.apache.camel.component.file.remote.FtpConsumer - Found
3 in directory: my/relative/directory
[TRACE] 2017-09-05 11:40:58,657 org.apache.camel.component.file.remote.FtpConsumer - FtpFile[name=/absolute/path/to/directory/file1.txt,
dir=false, file=true]
[TRACE] 2017-09-05 11:40:58,657 org.apache.camel.component.file.remote.FtpConsumer - FtpFile[name=/absolute/path/to/directory/file2.txt,
dir=false, file=true]
[TRACE] 2017-09-05 11:40:58,657 org.apache.camel.component.file.remote.FtpConsumer - FtpFile[name=/absolute/path/to/directory/file3.txt,
dir=false, file=true]

{code}

When Camel tries to process each file however, it appears to be prepending the relative directory
to the absolute directory and failing to find the resulting garbled path:

{code:java}

[TRACE] 2017-09-05 11:40:59,417 org.apache.camel.component.file.remote.FtpConsumer - Processing
file: RemoteFile[absolute/path/to/directory/file1.txt]
[TRACE] 2017-09-05 11:40:59,418 org.apache.camel.component.file.remote.FtpConsumer - Retrieving
file: my/relative/directory//absolute/path/to/directory/file1.txt from: ftp://my.host.com:21/my/relative/directory?delete=false&download=true&stepwise=false
[TRACE] 2017-09-05 11:40:59,418 org.apache.camel.component.file.remote.FtpOperations - retrieveFile(my/relative/directory//absolute/path/to/directory/file1.txt)
[TRACE] 2017-09-05 11:40:59,418 org.apache.camel.component.file.remote.FtpOperations - Client
retrieveFile: my/relative/directory//absolute/path/to/directory/file1.txt
[WARN ] 2017-09-05 11:40:59,518 org.apache.camel.component.file.remote.FtpConsumer - Error
processing file RemoteFile[absolute/path/to/directory/file1.txt] due to Cannot retrieve file:
RemoteFile[absolute/path/to/directory/file1.txt] from: ftp://my.host.com:21/my/relative/directory?delete=false&download=true&stepwise=false

{code}

This path in the logs constructed by the FTPComponent is incorrect:

{noformat}
Retrieving file: my/relative/directory//absolute/path/to/directory/file1.txt
{noformat}

I debugged the Camel FTP consumer and it looks like
[[on line 238 is where the relative path is getting prepended to the absolute path|https://github.com/apache/camel/blob/camel-2.19.x/components/camel-ftp/src/main/java/org/apache/camel/component/file/remote/FtpConsumer.java#L238]

Interestingly enough, [the SFTP component is doing the same thing|https://github.com/apache/camel/blob/camel-2.19.x/components/camel-ftp/src/main/java/org/apache/camel/component/file/remote/SftpConsumer.java#L208]
however it is working because 
{code:java}
RemoteFileOperations<ChannelSftp.LsEntry>
{code}
 does not set filename as an absolute path but 
{code:java}
RemoteFileOperations<FTPFile>
{code}
 does.

Does anyone have any suggestions to work around this to get the FTP Conponent to consume the
files? or am I doing something incorrectly?

I'm using Camel 2.19.0




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