DataSift\Storyplayer\CommandLib\SshClient::uploadFile PHP Method

    public function uploadFile($sourceFilename, $destFilename)
    {
        // vet our input
        Contract::RequiresValue($sourceFilename, is_string($sourceFilename));
        Contract::RequiresValue($sourceFilename, !empty($sourceFilename));
        Contract::RequiresValue($sourceFilename, is_file($sourceFilename));
        Contract::RequiresValue($destFilename, is_string($destFilename));
        Contract::RequiresValue($destFilename, !empty($destFilename));
        // make the params printable / executable
        // $printableParams = $this->convertParamsForUse($params);
        // what are we doing?
        $log = usingLog()->startAction("upload file '{$sourceFilename}' to host as '{$destFilename}'");
        // do we actually have everything we need to run the command?
        if (!$this->hasSshUsername()) {
            throw new E4xx_NeedSshUsername();
        }
        if (!$this->hasIpAddress()) {
            throw new E4xx_NeedIpAddress();
        }
        // build the full command
        //
        // the options that we pass (by default) to SCP:
        //
        // -o StrictHostKeyChecking=no
        //    do not verify the SSH host key (avoids an interactive prompt)
        // -i <private_key>
        //    use specified private key to access the remote/guest OS
        // <username>@<hostname>
        //    who we are logging in as (should never be root)
        // <additional SSH options>
        //    any other flags, such as -n to force non-interactive session
        $fullCommand = 'scp ' . ' ' . $this->getSshKeyForUse() . ' ' . $this->getScpOptionsForUse() . ' "' . $sourceFilename . '" ' . ' "' . $this->getSshUsername() . '@' . $this->getIpAddress() . ':' . $destFilename . '"';
        // run the command
        $commandRunner = $this->st->getNewCommandRunner();
        $result = $commandRunner->runSilently($fullCommand);
        // all done
        $log->endAction("return code was '{$result->returnCode}'");
        return $result;
    }