(SQL Server) AWS Transfer for SFTP (Amazon S3)

Once you've setup your AWS Transfer for SFTP in the AWS Console, interacting with it is no different than any other SSH/SFTP server. AWS will provide a private key in PEM format. It is used for authentication (instead of a password).

For more information, see https://docs.aws.amazon.com/transfer/latest/userguide/getting-started-use-the-service.html

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example assumes the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @sftp int
    -- Use "Chilkat_9_5_0.SFtp" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.SFtp', @sftp OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Connect to the AWS SFTP server.
    -- Change the domain to your value.
    DECLARE @domain nvarchar(4000)
    SELECT @domain = 's-123456df999999fab.server.transfer.eu-west-2.amazonaws.com'
    DECLARE @port int
    SELECT @port = 22
    DECLARE @success int
    EXEC sp_OAMethod @sftp, 'Connect', @success OUT, @domain, @port
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @sftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sftp
        RETURN
      END

    -- Load your AWS SFTP private key PEM file..
    DECLARE @sshKey int
    -- Use "Chilkat_9_5_0.SshKey" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.SshKey', @sshKey OUT

    DECLARE @keyText nvarchar(4000)
    EXEC sp_OAMethod @sshKey, 'LoadText', @keyText OUT, 'qa_data/pem/s3_sftp_privateKey.pem'
    EXEC sp_OAGetProperty @sshKey, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @sshKey, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sftp
        EXEC @hr = sp_OADestroy @sshKey
        RETURN
      END
    EXEC sp_OAMethod @sshKey, 'FromOpenSshPrivateKey', @success OUT, @keyText
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @sshKey, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sftp
        EXEC @hr = sp_OADestroy @sshKey
        RETURN
      END

    -- Authenticate with the SSH server using the private key.
    EXEC sp_OAMethod @sftp, 'AuthenticatePk', @success OUT, 'myUsername', @sshKey
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @sftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sftp
        EXEC @hr = sp_OADestroy @sshKey
        RETURN
      END

    -- After authenticating, the SFTP subsystem must be initialized:
    EXEC sp_OAMethod @sftp, 'InitializeSftp', @success OUT
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @sftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sftp
        EXEC @hr = sp_OADestroy @sshKey
        RETURN
      END

    -- Upload from the local file to the SSH server.
    -- Important -- the remote filepath is the 1st argument,
    -- the local filepath is the 2nd argument;
    DECLARE @remoteFilePath nvarchar(4000)
    SELECT @remoteFilePath = 'hamlet.xml'
    DECLARE @localFilePath nvarchar(4000)
    SELECT @localFilePath = 'c:/temp/hamlet.xml'

    EXEC sp_OAMethod @sftp, 'UploadFileByName', @success OUT, @remoteFilePath, @localFilePath
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @sftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sftp
        EXEC @hr = sp_OADestroy @sshKey
        RETURN
      END


    PRINT 'Success.'

    EXEC @hr = sp_OADestroy @sftp
    EXEC @hr = sp_OADestroy @sshKey


END
GO