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From "Mattmann, Chris A (388J)" <chris.a.mattm...@jpl.nasa.gov>
Subject Re: The problem occurred when downloading a file by using a protocol "sftp" in pushpull
Date Mon, 06 Aug 2012 15:11:07 GMT
Hi YunHee,

Great job. Can you please file a JIRA issue for this and upload
a patch file?

Thank you!

Cheers,
Chris

On Aug 6, 2012, at 1:28 AM, YunHee Kang wrote:

> Hi Brian,
> 
> I just have fixed  the problem I had related with sftp protocol in
> pushpull framework.
> To fix it, I just added the following statement in the method
> connect() in the file JschSftpProtocol.java.
> session.setConfig("StrictHostKeyChecking", "no");
> 
> You can get more details about the above statement  in the following:
> http://www.mail-archive.com/jsch-users@lists.sourceforge.net/msg00393.html
> 
> Thanks,
> Yunhee
> 
> 
> 
> 
> 2012/8/6 YunHee Kang <yunh.kang@gmail.com>:
>> Hi Brian,
>> 
>> I tried to download a file with sftp protocol in pushpull framework
>> and got two warnings and a severe error message as follows:
>> WARNING: Error occurred while connecting to RemoteSite: alias =
>> 'SCPTESL2CO2'  url = 'sftp://agent.bu.ac.kr'  username = 'yhkang'
>> cdTestDir = 'null' maxConnections = '-1' : Failed to connect to host
>> agent.bu.ac.kr : reject HostKey: agent.bu.ac.kr
>> Aug 6, 2012 2:13:48 PM
>> org.apache.oodt.cas.pushpull.protocol.ProtocolHandler
>> getAppropriateProtocolBySite
>> WARNING: ProtocolFactory
>> org.apache.oodt.cas.protocol.sftp.JschSftpProtocolFactory is not
>> compatible with server at sftp://agent.bu.ac.kr
>> Aug 6, 2012 2:13:48 PM
>> org.apache.oodt.cas.pushpull.retrievalsystem.RetrievalSetup
>> retrieveFiles
>> SEVERE: Failed to finish downloading per property files
>> /home/yhkang/oodt-0.5/cas-pushpull/etc/examples/DirStructXmlParserFiles/SCPTESL2CO2.xml
>> : Failed to get appropriate protocol for RemoteSite: alias =
>> 'SCPTESL2CO2'  url = 'sftp://agent.bu.ac.kr'  username = 'yhkang'
>> cdTestDir = 'null' maxConnections = '-1'
>> org.apache.oodt.cas.protocol.exceptions.ProtocolException: Failed to
>> get appropriate protocol for RemoteSite: alias = 'SCPTESL2CO2'  url =
>> 'sftp://agent.bu.ac.kr'  username = 'yhkang' cdTestDir = 'null'
>> maxConnections = '-1'
>>        at org.apache.oodt.cas.pushpull.protocol.ProtocolHandler.getAppropriateProtocolBySite(ProtocolHandler.java:166)
>>        at org.apache.oodt.cas.pushpull.retrievalsystem.FileRetrievalSystem.changeToDir(FileRetrievalSystem.java:304)
>>        at org.apache.oodt.cas.pushpull.retrievalmethod.RemoteCrawler.processPropFile(RemoteCrawler.java:104)
>>        at org.apache.oodt.cas.pushpull.retrievalsystem.RetrievalSetup.retrieveFiles(RetrievalSetup.java:109)
>>        at org.apache.oodt.cas.pushpull.daemon.Daemon$1.run(Daemon.java:218)
>>        at java.lang.Thread.run(Thread.java:662)
>> Aug 6, 2012 2:13:48 PM org.apache.oodt.cas.pushpull.daemon.Daemon$1 run
>> INFO: Daemon with ID = 90121 on RMI registry port 9012 is shutting down
>> 
>> I think the warning message is related with an exception occurred in
>> the method  connect() of  JschSftpClient.java:
>> protected void connect(String host, final String username,
>>      final String password) throws ProtocolException {
>>    try {
>>      System.out.println(System.getProperty("user.home") + "/.ssh/known_hosts");
>>      jsch.setKnownHosts(System.getProperty("user.home") + "/.ssh/known_hosts");
>>      session = jsch.getSession(username, this.getRemoteSite().getURL()
>>          .getHost(), 22);
>>      session.setPassword(password);
>>      session.connect();
>>      sftpChannel = (ChannelSftp) session.openChannel("sftp");
>>      sftpChannel.connect();
>>    } catch (Exception e) {
>>      throw new ProtocolException("Failed to connect to host " + host + " : "
>>          + e.getMessage());
>>    }
>>  }
>> 
>> I make sure that there is no problem  when downloading  a file by  scp
>> command  without any password as follows:
>> scp yhkang@agent.bu.ac.kr://home/yhkang/oodt-0.5/TL2CO2N.005/2004.09.20/TES-Aura_L2-CO2-Nadir_r0000002147_F06_09.he5
>> .
>> TES-Aura_L2-CO2-Nadir_r0000002147_F06_09.he5  100%   88MB  87.9MB/s   00:01
>> 
>> Let me know how to fix the problem.
>> 
>> Thanks,
>> Yunhee


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Chris Mattmann, Ph.D.
Senior Computer Scientist
NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
Office: 171-266B, Mailstop: 171-246
Email: chris.a.mattmann@nasa.gov
WWW:   http://sunset.usc.edu/~mattmann/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


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