S3_files.class.inc

<?php

require_once ("Files.interface.inc");
require_once ("vmlib/phpUtil.inc");
require_once ("vmlib/logUtil.inc");
require_once ("aws_sdk/aws-autoloader.php");

class S3_files implements Files{

    var $oProperties;
    var $oS3Client;

    function __construct($properties){
        $this->oProperties = $properties;
        // create client s3
        $this->oS3Client = new Aws\S3\S3Client(array(
            'version'=>'latest',
            'region'=> $properties['fileS3UploaderRegion'],
            'profile'=> $properties['fileS3UploaderProfil'],
            'debug' => false
        ));
    }

    private function getBucketConst(){
        $sBucket = $this->oProperties['fileS3UploaderBucket'];
        $sPrefix = "";

        if (strpos($sBucket, "/") > -1){
            $aBucket = explode("/", $sBucket );
            $sBucket = $aBucket[0];
            $sPrefix = implode("/", array_slice($aBucket, 1));
        }

        return array($sBucket, $sPrefix);
    }
    public function getFileEtag($sFilePath){
        list($sBucket, $sPrefix) = $this->getBucketConst();
        $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);

        try {
            $oResult = $this->oS3Client->headObject(array(
                'Bucket' => $sBucket,
                'Key'    => $sFilePath)
            );

            return str_replace('"', '', $oResult["ETag"]);
        }catch (Aws\S3\Exception\S3Exception $e){
            writeToErrorLog($e->getMessage());
            return false;
        }
    }
    public function file_exists ($sFilePath){

        list($sBucket, $sPrefix) = $this->getBucketConst();
        $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);

        try {
            $this->oS3Client->headObject(array(
                'Bucket' => $sBucket,
                'Key'    => $sFilePath)
            );
        }catch (Aws\S3\Exception\S3Exception $e){
            writeToErrorLog($e->getMessage());
            return false;
        }
        return true;
    }
    public function file_put_contents ($sFilePath, $sData, $iFlags = 0, $mContext = null){
        list($sBucket, $sPrefix) = $this->getBucketConst();
        $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);