[CAMEL-8191] Charset is ignored for SFTP producer endpoints

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.12.3, 2.14.1
• Fix Version/s: 2.14.2, 2.15.0
• Component/s: camel-ftp
• Labels: charset sftp

Environment

vso@vso-desktop:/tmp$ uname -a
Linux vso-desktop 3.13.0-43-generic #72~precise1-Ubuntu SMP Tue Dec 9 12:14:18 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

vso@vso-desktop:/tmp$ java -version
java version "1.7.0_65"
OpenJDK Runtime Environment (IcedTea 2.5.3) (7u71-2.5.3-0ubuntu0.12.04.1)
OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)

vso@vso-desktop:/tmp$ ssh -v
OpenSSH_5.9p1 Debian-5ubuntu1.4, OpenSSL 1.0.1 14 Mar 2012

• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Volodymyr Sobotovych
• Created: 29/Dec/14 17:46
• Updated: 26/Jan/15 19:35
• Resolved: 26/Jan/15 13:47

Description

For SFTP producer endpoints option "charset" is ignored and the output file is created using platform-default charset (usually UTF-8).

The simple Spring context illustrates the issue:

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://camel.apache.org/schema/spring 
       http://camel.apache.org/schema/spring/camel-spring.xsd">
  <camelContext xmlns="http://camel.apache.org/schema/spring">
    <route>
      <from uri="stream:in?promptMessage=Enter something:" />
      <to uri="sftp://localhost:22/vso/sandbox?charset=ISO-8859-1&amp;username=fake_sftp_user&amp;password=qwerty"/>
    </route>
  </camelContext>
</beans>

This context defines a route that transfers the string entered by user via SFTP. If the user enters "Müller", I can see 7-byte message in the output directory (because "ü" is represented using 2 bytes in UTF-8). While it should be 6-byte message if the file was encoded in ISO-8859-1.

This problem affects only SFTP endpoints. File and FTP endpoints treat the "charset" option correctly.