SFTP Smart Services

can you please reply meenakshik, how we can resolve this above issue, i am using send file over SFTP smart service, and after version updation to 2.0.0, it is failing

while using the latest version 2.0.0  for this plugin, my existing process is getting failed with the error message ---Error copying the Appian document to the remote server. See the application server log for more details. Error Message: No such file or directory and this working as expected on the 1.7.0 version.
kindly, lets us know, how to resolve this kind of issue.

It seems like there is an invalid filename. What are the sftpServerFilePath and documentName parameters you are passing in?

Are you perhaps trying to pull a file that doesn't have an extension?

I'm also running into same issue 

2020-10-12 17:52:03,309 [Appian Work Item - 10843 - execution01 : UnattendedJavaActivityRequest] ERROR com.appiancorp.process.engine.UnattendedJavaActivityRequest - An error occurred while executing activity: id=268465328, classname=com.appian.ps.plugins.sftpsmartservices.ReceiveFileOverSFTPBasic
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(String.java:1927)
at com.appian.ps.plugins.sftpsmartservices.ReceiveFileOverSFTPBasic.run(ReceiveFileOverSFTPBasic.java:103)
at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.lambda$call$0(DefaultActivityExecutor.java:131)
at com.appiancorp.plugins.PluginUsageLogger.runWithPluginInformation(PluginUsageLogger.java:52)
at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:131)
at com.appiancorp.process.runtime.framework.DefaultActivityExecutor$1.call(DefaultActivityExecutor.java:125)
at com.appiancorp.common.ContextClassLoaderSwitcher.runInContext(ContextClassLoaderSwitcher.java:25)
at com.appiancorp.process.runtime.framework.DefaultActivityExecutor.execute(DefaultActivityExecutor.java:125)
at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute(UnattendedJavaActivityRequest.java:83)
at com.appiancorp.process.engine.UnattendedJavaActivityRequest.execute0(UnattendedJavaActivityRequest.java:55)
at com.appiancorp.process.engine.ContinuationRequest.executeOuter(ContinuationRequest.java:71)
at com.appiancorp.process.engine.ContinuationRequest.execute(ContinuationRequest.java:100)
at com.appiancorp.process.workpoller.UnattendedRequestHandlerBean.onMessage(UnattendedRequestHandlerBean.java:36)
at com.appiancorp.process.workpoller.WorkItem.run(WorkItem.java:93)
at org.springframework.jca.work.SimpleTaskWorkManager$DelegatingWorkAdapter.run(SimpleTaskWorkManager.java:239)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

Code at 103: ReceiveFileOverSFTPBasic

if (documentName.lastIndexOf('.') == -1)
documentName += remote_filename.substring(remote_filename
.lastIndexOf('.'));

I see that there is a single Send File over FTP, but there doesn't seem to be a smart service for sending a single file over FTPS.  This would most likely have to be an enhancement to the plugin.

Can you include the stack trace from the tomcat-stdout.log to get more information on what is throwing this exception?

Is your variable that you are saving the output of the rule into a multiple? That smart service returns two arrays files[] and directories[]

This function is simply running an ls command on the SFTP server.  Then it loops through each of the contents and runs the following logic:

If content.getLongname() start with d then add to the directory array, otherwise add to file array (unless ".." or "." which are filtered out)

Are you checking both of the output arrays (documents and files)?

I would test with an SFTP client like WinSCP and see if you have the same issue.  It may be a user permission issue on those files.

There is a limit of the smart service of an hour, but no specific timeout set in the code for the plug-in.  

That being said, an 18GB is very large - what are your plans for using it in Appian?  Additionally, it will use up a lot of Appian's disk space.