CODEWITHSUNDEEP
javaspring-bootspring-integrationsftppolling
Rishabh
Rishabh

Reputation: 43

SFTP polling is not working with Spring Integration 6.0.1

Hello I am using file poller with Spring Integration and we have recently migrated to Java 17. Spring Integration moved from 5.5.15 to 6.0.1

My old bean was:

@Bean  
public SessionFactory<LsEntry> sftpSessionFactory(){ 
   DefaultSftpSessionFactory sf = new DefaultSftpSessionFactory();  
   sf.setHost(serverhost);  
   sf.setPort(portname); 
   sf.setUser(username);
   Resource resource = resourceLoader.getResource(sftpKeyPrivateKey); 
   sf.setPrivateKey(resource); 
   sf.setPrivateKeyPassphrase(sftpKeyPrivateKeyPassword); 
   sf.setAllowUnknownKeys(true); 
   return new CachingSessionFactory<LsEntry> (sf); 
}

My new code for Session Factory looked like:

@Bean 
public SessionFactory<org.apache.sshd.sftp.client.SftpClient.DirEntry> sftpSessionFactory() 
{ 
    DefaultSftpSessionFactory sf = new DefaultSftpSessionFactory();  
    sf.setHost(serverhost); 
    sf.setPort(portname);
    sf.setUser(username); 
    Resource resource = resourceLoader.getResource(sftpKeyPrivateKey); 
    sf.setPrivateKey(resource); 
    sf.setPrivateKeyPassphrase(sftpKeyPrivateKeyPassword); 
    sf.setAllowUnknownKeys(true); 
    return new  CachingSessionFactory<org.apache.sshd.sftp.client.SftpClient.DirEntry(sf); 
}

Everything else remains same. Old code was working as expected but in new code when i start my service i get below exception:

Caused by: java.lang.IllegalStateException: failed to create SFTP Session 
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:291) 
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:67) 
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:85) 
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:82) 
at org.springframework.integration.util.SimplePool.doGetItem(SimplePool.java:206) 
at org.springframework.integration.util.SimplePool.getItem(SimplePool.java:187) ... 23 more Caused by: org.apache.sshd.common.SshException: No more authentication methods available 
at org.apache.sshd.common.future.AbstractSshFuture.verifyResult(AbstractSshFuture.java:127) 
at org.apache.sshd.client.future.DefaultAuthFuture.verify(DefaultAuthFuture.java:39) 
at org.apache.sshd.client.future.DefaultAuthFuture.verify(DefaultAuthFuture.java:32) 
at org.apache.sshd.common.future.VerifiableFuture.verify(VerifiableFuture.java:43) 
at org.apache.sshd.common.future.VerifiableFuture.verify(VerifiableFuture.java:68) 
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.initClientSession(DefaultSftpSessionFactory.java:318) 
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:281) ... 28 more 
Caused by: org.apache.sshd.common.SshException: No more authentication methods available

Upvotes: 0

Views: 1960

Answers (1)

Rishabh
Rishabh

Reputation: 43

I got the issue, with Java 17 changes we have to use DirEntry from Apache instead of LsEntry. With JSCH you can ppk file in putty ssh-rsa. But in Apache we need to have our key starting with -----BEGIN OPENSSH PRIVATE KEY-----. Because inside code this is the beginner apache has in order to load.

So we can convert our key to OPENSSH private key and it will work as expected.

ssh-keygen -p -N "" -f /path/to/key

Upvotes: 0

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