example for Backup files by Amazon Glacier

backup.example.php

#! /usr/bin/env php
<?php

/*
 *  example for Backup files by Amazon Glacier
 *
 * composer.json:
 * {
 * 	"require": {
 * 		"aws/aws-sdk-php": "2.6.5"
 * 	}
 * }
 *
 * Zheng Kai <zhengkai@gmail.com> 2014.6.6(D-Day)
 */


require_once __DIR__.'/vendor/autoload.php';

$sDirScan = '/etc/';

$aConfig = array(
	'key' => 'xxxx',
	'secret' => 'xxxx',
	'region' => 'eu-west-1',
	'vault' => 'xxxx',
);

use Aws\Glacier\GlacierClient;
$oClient = GlacierClient::factory(array(
	'key'    => $aConfig['key'],
    'secret' => $aConfig['secret'],
    'region' => $aConfig['region'],
));

$sFileArchive = __DIR__.'/archive.csv';
$sFileTmp = __DIR__.'/tmp.gz';

$hFile = @fopen($sFileArchive, 'r+b');
if (!$hFile) {
	echo 'can not create file, exit';
	exit;
}

$iBlock = 0;
flock($hFile, LOCK_EX | LOCK_NB, $iBlock);
if ($iBlock) {
	echo 'blocked, exit';
	exit;
}

chdir($sDirScan);
$lFile = scandir($sDirScan);

$lFile = array_filter($lFile, function ($sFile) use ($sDirScan) {
	if (substr($sFile, 0, 1) === '.') {
		return FALSE;
	}
	if (!is_file($sDirScan.$sFile)) {
		return FALSE;
	}
	return TRUE;
});

$lFile = array_values($lFile);

echo 'file scaned = '.implode(' ', $lFile), "\n";

echo 'start while', "\n";

while (!feof($hFile)) {
	$sLine = fgets($hFile, 1000);
	if (!$sLine) {
		continue;
	}

	$aMatch = array();
	if (!preg_match('#^(.+?),#', $sLine, $aMatch)) {
		continue;
	}

	$iKey = array_search($aMatch[1], $lFile);
	if ($iKey === FALSE) {
		continue;
	}
	unset($lFile[$iKey]);
}
echo "\n";

echo 'file to write = '.implode(' ', $lFile), "\n";

foreach ($lFile as $sFile) {

	echo "\n", $sFile, "\n";

	if (file_exists($sFileTmp)) {
		unlink($sFileTmp);
	}
	if (file_exists($sFileTmp)) {
		echo 'can not remove temp file, exit';
		exit;
	}

	$iSize = filesize($sFile);
	$iSizeTmp = 0;

	if ($iSize < 10) {

		echo 'filesize too small, skip', "\n";
		$sKey = 'small';

	} else {

		$sFilePath = $sDirScan.$sFile;

		$sCmd = sprintf('gzip -q -c --best %s 2>/dev/null > %s', escapeshellarg($sFilePath), escapeshellarg($sFileTmp));
		exec($sCmd);

		if (!file_exists($sFileTmp) || ($iSizeTmp = filesize($sFileTmp)) < 5) {
			echo 'can not create temp file, skip', "\n";
			continue;
		}

		$sKey = sha1_file($sFileTmp);

		$result = $client->uploadArchive(array(
			'vaultName' => $aConfig['vault'],
			'archiveDescription' => $sFile,
			'body' => fopen($sFileTmp, 'rb'),
		));
		if ($result) {
			$sKey = $result->get('archiveId');
		} else {
			$sKey = 'failed';
		}

		unlink($sFileTmp);
	}

	$iLineCount = intval(exec('wc -l '.escapeshellarg($sFile).' 2>/dev/null'));
	$sLine = sprintf('%s,%d,%d,%d,%s'."\n", $sFile, $iLineCount, $iSize, $iSizeTmp, $sKey);
	$sFormat = '%-10s : %s'."\n";

	printf($sFormat, 'line', $iLineCount);
	printf($sFormat, 'filesize', $iSize);
	printf($sFormat, 'gzipsize', $iSizeTmp);
	printf($sFormat, 'archiveid', $sKey);

	fwrite($hFile, $sLine, 10240);
}