Information
  • Author: Appian Corporation
  • Type: Plug-in (Function & Smart Service)
  • Support: This plug-in or utility is not supported by the author. The content is free to use with a licensed product, but it is made available as-is and Community supported.
  • Industry: All Industries
  • Compatible Version(s): 24.2
  • First Released:
  • Last Updated:
  • Cost: Free
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Home » AppMarket » SFTP Smart Services

SFTP Smart Services

Overview

Contains multiple Smart Services for interacting with a remote file server via SFTP, FTP, or SCP.  Using these services, an Appian application can be configured to send and receive files, folders, and metadata in a process.  Features support for zlib compression.

Key Features & Functionality

Smart Services included:

  • SFTP:
    • Remove Directory Over SFTP (Basic Credentials)
    • Send File Over SFTP
    • Send File Over SFTP (Basic Credentials)
    • Receive File Over SFTP
    • Receive File Over SFTP (Basic Credentials)
    • Rename File Over SFTP
    • Get Remote Directory Contents Over SFTP
    • Get Remote Directory Contents Over SFTP (Basic Credentials)
    • Create Directory Over SFTP
    • Create Directory Over SFTP (Basic Credentials)
  • SCP:
    • Send File Over SCP
    • Receive File Over SCP
  • FTP:
    • Send File Over FTP
    • Receive File Over FTP
    • Receive Folder Over FTP
  • FTPS
    • Receive Folder Over FTPS
    • Send File Over FTPS (Basic Credentials)

All smart services in the package use Secure Credentials Store.

Anonymous

  • When we upgraded the plugin from version 3.0.3 to the latest version that is 4.1.0, we started facing the following error:

    2025-01-17 19:24:41,547 [http-nio-8080-exec-804] ERROR com.appiancorp.ps.plugins.filetransfer.sftp.ReturnRemoteFolderContentsOverSFTP - com.jcraft.jsch.JSchException: Auth fail for methods 'publickey,password,keyboard-interactive'

    Please advise.

  • We upgraded the plugin to 4.1.0 and using ssh-key pair authentication. for this configured(username,password,passphrase in admin console and also supplied values to type FT_Config to send and receive files. we are getting below error sftsmartservices.receiveFileOverSFTP - Error connecting to SFTP server com.jcraft.jsch.JSchException: 'argon2' is required, but it is not available.

  • in reply to Appian AppMarket

    We upgraded the plugin to 4.1.0, now we are getting below error 

    "Algorithm negotiation fail: algorithmName=""server_host_key"" jschProposal=""ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256"" serverProposal=""ssh-rsa"""

    Please let us know how to fix the issue   

  • We upgraded the plugin to 4.1.0, now we are getting below error 

    "Algorithm negotiation fail: algorithmName=""server_host_key"" jschProposal=""ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256"" serverProposal=""ssh-rsa"""

    Please let us know how to fix the issue   

  • in reply to dillonm

    SFTP send file smartservice> Remote File Path input parameter expects the complete file path, inluding the name of the file, which you are passing in the source document parameter. Use document() function to get the name and file extension of the source document to append it to the Remote File Path

  • We upgraded the plugin to 4.1.0 and while using the latest smart service '(SFTP) Get Remote folder Contents' replacing the deprecated smart service "Get Remote Directory Contents over SFTP", we got the below error:

    "Algorithm negotiation fail: algorithmName=""server_host_key"" jschProposal=""ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256"" serverProposal=""ssh-rsa"""

    The same smart service (SFTP) Get Remote Folder Contents works fine with the Plugin version 3.0.3.

    Is there a know resolution to this error?

     

  • v4.1.0 Release Notes
    • Fixed the deprecated API's and set the minimum supported version to 23.2

  • While receiving file using smart service "Receive File Over SFTP", I am getting error as "Error copying the remote file to disk. See application server log for more details. Error Message: The message [filename] is not extractable!". It worked fist time and from 2nd time I am getting error. Also I tried next day but still getting same error.

    I am using plugin with version 2.2.1.

    Can you please suggest solution on this? 

  • We are using the SFTP plugin and upgraded to V4.0.0.
    From our health check report, we are getting the below warning with Medium risk.

    Warning: Plug-ins using removed, private or deprecated Appian APIs

    Message: com.appiancorp.a2.process.runtime.activities.sftp

    Description: 

    SFTP Functions (com.appiancorp.a2.process.runtime.activities.sftp) references deprecated Appian APIs
    [deprecated] com.appiancorp.suiteapi.content.ContentOutputStream.<init>(com.appiancorp.suiteapi.content.ContentService, java.lang.Long, com.appiancorp.suiteapi.content.Approval, java.lang.String)
    [deprecated] com.appiancorp.suiteapi.content.ContentOutputStream.close()
    [deprecated] com.appiancorp.suiteapi.content.ContentOutputStream.getContentId()
    [deprecated] com.appiancorp.suiteapi.content.ContentOutputStream.toString()
    [deprecated] com.appiancorp.suiteapi.content.ContentOutputStream.write(byte[], int, int)
    [deprecated] com.appiancorp.suiteapi.content.ContentService.getInternalFilename(java.lang.Long)
    [deprecated] com.appiancorp.suiteapi.content.ContentService.upload(com.appiancorp.suiteapi.knowledge.Document, java.lang.Integer)
    [deprecated] com.appiancorp.suiteapi.knowledge.Document.getInternalFilename() (less...)
    Our question is , How critical it is? Hpw to resolve this issue?
    Thanks
  • v4.0.0 Release Notes
    • Upgraded the JSch library to support more algorithms

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