Java

Clear the SFTP Session Log

Demonstrates the Chilkat SFtp.ClearSessionLog method, which clears the in-memory text stored in the SessionLog property. It takes no arguments.

Background: With session logging enabled, the SessionLog accumulates a running record of the session's activity that is invaluable for diagnosing a failed transfer. Over a long-lived session that log grows unbounded, so clearing it frees memory — and, more usefully, lets you capture the log for one specific operation in isolation by clearing it just before and reading it just after.

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Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    //  Demonstrates the SFtp.ClearSessionLog method, which clears the in-memory text stored in the
    //  SessionLog property.  It takes no arguments.

    CkSFtp sftp = new CkSFtp();

    //  Connect, authenticate, and initialize the SFTP subsystem.
    int port = 22;
    success = sftp.Connect("sftp.example.com",port);
    if (success == false) {
        System.out.println(sftp.lastErrorText());
        return;
        }

    //  Normally you would not hard-code the password in source.  You should instead obtain it
    //  from an interactive prompt, environment variable, or a secrets vault.
    String password = "mySshPassword";

    success = sftp.AuthenticatePw("mySshLogin",password);
    if (success == false) {
        System.out.println(sftp.lastErrorText());
        return;
        }

    success = sftp.InitializeSftp();
    if (success == false) {
        System.out.println(sftp.lastErrorText());
        return;
        }

    //  When KeepSessionLog is enabled, the SessionLog property accumulates a record of the session's
    //  activity, which is useful for debugging.
    sftp.put_KeepSessionLog(true);

    //  ... perform operations ...

    //  Clear the accumulated log, for example before starting a new logical operation whose log you
    //  want to capture in isolation.
    sftp.ClearSessionLog();
    System.out.println("Session log cleared.");

    sftp.Disconnect();
  }
}