Node.js

SFTP Synchronize Directory Tree - Download

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Demonstrates how to download files to synchronize a local directory tree with a remote directory tree. The SyncTreeDownload method recursively descends the remote directory tree and downloads files based on existence, last-mod date/time and/or size differences. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    var sftp = new chilkat.SFtp();

    success = sftp.Connect("my-ssh-server.com",22);
    if (success == true) {
        success = sftp.AuthenticatePw("mySshLogin","mySshPassword");
    }

    if (success == true) {
        success = sftp.InitializeSftp();
    }

    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    //  Synchronize the remote directory tree rooted at "syncDownloadTest/xml"
    //  with the local directory tree rooted at "qa_output"
    //  Both directories are relative paths.  The remote directory
    //  is relative to the HOME directory of the SSH user account.
    //  The local directory is relative to the current working directory of the process.
    //  It is also possible to use absolute paths.

    var remoteDir = "syncDownloadTest/xml";
    var localDir = "qa_output";

    //  Possible modes that can be passed to the SyncTreeDownload method are:
    //  mode=0: Download all files
    //  mode=1: Download all files that do not exist on the local filesystem.
    //  mode=2: Download newer or non-existant files.
    //  mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.
    //  mode=5: Download only missing files or files with size differences.
    //  mode=6: Same as mode 5, but also download newer files.
    //  mode=99: Do not download files, but instead delete remote files that do not exist locally.

    //  This example will use mode 6 to download missing, newer, or files with size differences.
    var mode = 6;
    //  This example will turn on recursion to synchronize the entire tree. 
    //  Recursion can be turned off to synchronize the files of a single directory.
    var recursive = true;
    success = sftp.SyncTreeDownload(remoteDir,localDir,mode,recursive);
    if (success !== true) {
        console.log(sftp.LastErrorText);
        return;
    }

    console.log("Success.");

}

chilkatExample();