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【PHP】通过PHP脚本自动部署GIT项目
作者:奕男 / 发布于2015/10/14/ 562

	<?php
	/**
	* Simple PHP Git deploy script
	*
	* Automatically deploy the code using PHP and Git.
	*
	* @version 1.3.1
	* @link https://github.com/476552238li/deploy
	*/

	// =========================================[ Configuration start ]===

	/**
	* It's preferable to configure the script using `deploy-config.php` file.
	*
	* Rename `deploy-config.example.php` to `deploy-config.php` and edit the
	* configuration options there instead of here. That way, you won't have to edit
	* the configuration again if you download the new version of `deploy.php`.
	*/
	if (file_exists(basename(__FILE__, '.php').'-config.php')) require_once basename(__FILE__, '.php').'-config.php';

	/**
	* Protect the script from unauthorized access by using a secret access token.
	* If it's not present in the access URL as a GET variable named `sat`
	* e.g. deploy.php?sat=Bett...s the script is not going to deploy.
	*
	* @var string
	*/
	if (!defined('SECRET_ACCESS_TOKEN')) define('SECRET_ACCESS_TOKEN', '6a604a35d5a7c3fd8786f5ee94991a8c');

	/**
	* The address of the remote Git repository that contains the code that's being
	* deployed.
	* If the repository is private, you'll need to use the SSH address.
	*
	* @var string
	*/
	if (!defined('REMOTE_REPOSITORY')) define('REMOTE_REPOSITORY', 'https://github.com/476552238li/php-sql-parser.git');

	/**
	* The branch that's being deployed.
	* Must be present in the remote repository.
	*
	* @var string
	*/
	if (!defined('BRANCH')) define('BRANCH', 'master');

	/**
	* The location that the code is going to be deployed to.
	* Don't forget the trailing slash!
	*
	* @var string Full path including the trailing slash
	*/
	if (!defined('TARGET_DIR')) define('TARGET_DIR', '/var/www/php-sql-parser');

	/**
	* Whether to delete the files that are not in the repository but are on the
	* local (server) machine.
	*
	* !!! WARNING !!! This can lead to a serious loss of data if you're not
	* careful. All files that are not in the repository are going to be deleted,
	* except the ones defined in EXCLUDE section.
	* BE CAREFUL!
	*
	* @var boolean
	*/
	if (!defined('DELETE_FILES')) define('DELETE_FILES', false);

	/**
	* The directories and files that are to be excluded when updating the code.
	* Normally, these are the directories containing files that are not part of
	* code base, for example user uploads or server-specific configuration files.
	* Use rsync exclude pattern syntax for each element.
	*
	* @var serialized array of strings
	*/
	if (!defined('EXCLUDE')) define('EXCLUDE', serialize(array(
	'.git',
	)));

	/**
	* Temporary directory we'll use to stage the code before the update. If it
	* already exists, script assumes that it contains an already cloned copy of the
	* repository with the correct remote origin and only fetches changes instead of
	* cloning the entire thing.
	*
	* @var string Full path including the trailing slash
	*/
	if (!defined('TMP_DIR')) define('TMP_DIR', '/tmp/spgd-'.md5(REMOTE_REPOSITORY).'/');

	/**
	* Whether to remove the TMP_DIR after the deployment.
	* It's useful NOT to clean up in order to only fetch changes on the next
	* deployment.
	*/
	if (!defined('CLEAN_UP')) define('CLEAN_UP', true);

	/**
	* Output the version of the deployed code.
	*
	* @var string Full path to the file name
	*/
	if (!defined('VERSION_FILE')) define('VERSION_FILE', TMP_DIR.'VERSION');

	/**
	* Time limit for each command.
	*
	* @var int Time in seconds
	*/
	if (!defined('TIME_LIMIT')) define('TIME_LIMIT', 30);

	/**
	* OPTIONAL
	* Backup the TARGET_DIR into BACKUP_DIR before deployment.
	*
	* @var string Full backup directory path e.g. `/tmp/`
	*/
	if (!defined('BACKUP_DIR')) define('BACKUP_DIR', false);

	/**
	* OPTIONAL
	* Whether to invoke composer after the repository is cloned or changes are
	* fetched. Composer needs to be available on the server machine, installed
	* globaly (as `composer`). See http://getcomposer.org/doc/00-intro.md#globally
	*
	* @var boolean Whether to use composer or not
	* @link http://getcomposer.org/
	*/
	if (!defined('USE_COMPOSER')) define('USE_COMPOSER', false);

	/**
	* OPTIONAL
	* The options that the composer is going to use.
	*
	* @var string Composer options
	* @link http://getcomposer.org/doc/03-cli.md#install
	*/
	if (!defined('COMPOSER_OPTIONS')) define('COMPOSER_OPTIONS', '--no-dev');

	/**
	* OPTIONAL
	* The COMPOSER_HOME environment variable is needed only if the script is
	* executed by a system user that has no HOME defined, e.g. `www-data`.
	*
	* @var string Path to the COMPOSER_HOME e.g. `/tmp/composer`
	* @link https://getcomposer.org/doc/03-cli.md#composer-home
	*/
	if (!defined('COMPOSER_HOME')) define('COMPOSER_HOME', false);

	/**
	* OPTIONAL
	* Email address to be notified on deployment failure.
	*
	* @var string Email address
	*/
	if (!defined('EMAIL_ON_ERROR')) define('EMAIL_ON_ERROR', false);

	// ===========================================[ Configuration end ]===

	// If there's authorization error, set the correct HTTP header.
	if (!isset($_GET['sat']) || $_GET['sat'] !== SECRET_ACCESS_TOKEN || SECRET_ACCESS_TOKEN === '6a604a35d5a7c3fd8786f5ee94991a8c') {
	header('HTTP/1.0 403 Forbidden');
	}
	ob_start();
	?>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<meta name="robots"content="noindex">
	<title>Simple PHP Git deploy script</title>
	<style>
	body { padding: 0 1em; background: #222; color: #fff; }
	h2, .error { color: #c33; }
	.prompt { color: #6be234; }
	.command { color: #729fcf; }
	.output { color: #999; }
	</style>
	</head>
	<body>
	<?php
	if (!isset($_GET['sat']) || $_GET['sat'] !== SECRET_ACCESS_TOKEN) {
	die('<h2>ACCESS DENIED!</h2>');
	}
	if (SECRET_ACCESS_TOKEN === 'BetterChangeMeNowOrSufferTheConsequences') {
	die("<h2>You're suffering the consequences!Change the SECRET_ACCESS_TOKEN from it's default value!</h2>");
	}
	?>
	<pre>

	Checking the environment ...

	Running as <b><?php echo trim(shell_exec('whoami')); ?></b>.

	<?php
	// Check if the required programs are available
	$requiredBinaries = array('git', 'rsync');
	if (defined('BACKUP_DIR') && BACKUP_DIR !== false) {
	$requiredBinaries[] = 'tar';
	if (!is_dir(BACKUP_DIR) || !is_writable(BACKUP_DIR)) {
	die(sprintf('<div class="error">BACKUP_DIR `%s` does not exists or is not writeable.</div>', BACKUP_DIR));
	}
	}
	if (defined('USE_COMPOSER') && USE_COMPOSER === true) {
	$requiredBinaries[] = 'composer --no-ansi';
	}
	foreach ($requiredBinaries as $command) {
	$path = trim(shell_exec('which '.$command));
	if ($path == '') {
	die(sprintf('<div class="error"><b>%s</b> not available. It needs to be installed on the server for this script to work.</div>', $command));
	} else {
	$version = explode("n", shell_exec($command.' --version'));
	printf('<b>%s</b> : %s'."n"
	, $path
	, $version[0]
	);
	}
	}
	?>

	Environment OK.

	Deploying <?php echo REMOTE_REPOSITORY; ?> <?php echo BRANCH."n"; ?>
	to <?php echo TARGET_DIR; ?> ...

	<?php
	// The commands
	$commands = array();

	// ========================================[ Pre-Deployment steps ]===

	if (!is_dir(TMP_DIR)) {
	// Clone the repository into the TMP_DIR
	$commands[] = sprintf(
	'git clone --depth=1 --branch %s %s %s'
	, BRANCH
	, REMOTE_REPOSITORY
	, TMP_DIR
	);
	} else {
	// TMP_DIR exists and hopefully already contains the correct remote origin
	// so we'll fetch the changes and reset the contents.
	$commands[] = sprintf(
	'git --git-dir="%s.git"--work-tree="%s"fetch origin %s'
	, TMP_DIR
	, TMP_DIR
	, BRANCH
	);
	$commands[] = sprintf(
	'git --git-dir="%s.git"--work-tree="%s"reset --hard FETCH_HEAD'
	, TMP_DIR
	, TMP_DIR
	);
	}

	// Update the submodules
	$commands[] = sprintf(
	'git submodule update --init --recursive'
	);

	// Describe the deployed version
	if (defined('VERSION_FILE') && VERSION_FILE !== '') {
	$commands[] = sprintf(
	'git --git-dir="%s.git"--work-tree="%s"describe --always > %s'
	, TMP_DIR
	, TMP_DIR
	, VERSION_FILE
	);
	}

	// Backup the TARGET_DIR
	// without the BACKUP_DIR for the case when it's inside the TARGET_DIR
	if (defined('BACKUP_DIR') && BACKUP_DIR !== false) {
	$commands[] = sprintf(
	"tar --exclude='%s*' -czf %s/%s-%s-%s.tar.gz %s*"
	, BACKUP_DIR
	, BACKUP_DIR
	, basename(TARGET_DIR)
	, md5(TARGET_DIR)
	, date('YmdHis')
	, TARGET_DIR // We're backing up this directory into BACKUP_DIR
	);
	}

	// Invoke composer
	if (defined('USE_COMPOSER') && USE_COMPOSER === true) {
	$commands[] = sprintf(
	'composer --no-ansi --no-interaction --no-progress --working-dir=%s install %s'
	, TMP_DIR
	, (defined('COMPOSER_OPTIONS')) ? COMPOSER_OPTIONS : ''
	);
	if (defined('COMPOSER_HOME') && is_dir(COMPOSER_HOME)) {
	putenv('COMPOSER_HOME='.COMPOSER_HOME);
	}
	}

	// ==================================================[ Deployment ]===

	// Compile exclude parameters
	$exclude = '';
	foreach (unserialize(EXCLUDE) as $exc) {
	$exclude .= ' --exclude='.$exc;
	}

	// Deployment command
	$commands[] = sprintf(
	'rsync -rltgoDzvO %s %s %s %s'
	, TMP_DIR
	, TARGET_DIR
	, (DELETE_FILES) ? '--delete-after' : ''
	, $exclude
	);

	// =======================================[ Post-Deployment steps ]===

	// Remove the TMP_DIR (depends on CLEAN_UP)
	if (CLEAN_UP) {
	$commands['cleanup'] = sprintf(
	'rm -rf %s'
	, TMP_DIR
	);
	}

	// =======================================[ Run the command steps ]===
	$output = '';
	foreach ($commands as $command) {
	set_time_limit(TIME_LIMIT); // Reset the time limit for each command
	if (file_exists(TMP_DIR) && is_dir(TMP_DIR)) {
	chdir(TMP_DIR); // Ensure that we're in the right directory
	}
	$tmp = array();
	exec($command.' 2>&1', $tmp, $return_code); // Execute the command
	// Output the result
	printf('
	<span class="prompt">$</span> <span class="command">%s</span>
	<div class="output">%s</div>
	'
	, htmlentities(trim($command))
	, htmlentities(trim(implode("n", $tmp)))
	);
	$output .= ob_get_contents();
	ob_flush(); // Try to output everything as it happens

	// Error handling and cleanup
	if ($return_code !== 0) {
	printf('
	<div class="error">
	Error encountered!
	Stopping the script to prevent possible data loss.
	CHECK THE DATA IN YOUR TARGET DIR!
	</div>
	'
	);
	if (CLEAN_UP) {
	$tmp = shell_exec($commands['cleanup']);
	printf('
	Cleaning up temporary files ...

	<span class="prompt">$</span> <span class="command">%s</span>
	<div class="output">%s</div>
	'
	, htmlentities(trim($commands['cleanup']))
	, htmlentities(trim($tmp))
	);
	}
	$error = sprintf(
	'Deployment error on %s using %s!'
	, $_SERVER['HTTP_HOST']
	, __FILE__
	);
	error_log($error);
	if (EMAIL_ON_ERROR) {
	$output .= ob_get_contents();
	$headers = array();
	$headers[] = sprintf('From: Simple PHP Git deploy script <simple-php-git-deploy@%s>', $_SERVER['HTTP_HOST']);
	$headers[] = sprintf('X-Mailer: PHP/%s', phpversion());
	mail(EMAIL_ON_ERROR, $error, strip_tags(trim($output)), implode("rn", $headers));
	}
	break;
	}
	}
	?>
	Done.
	</pre>
	</body>
	</html>
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