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Environment.php
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Environment.php
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<?php
namespace Pomander;
class Environment
{
public $name, $target, $scm, $adapter;
private $config, $shell, $mysql;
private $roles;
public function __construct($env_name)
{
$this->name = $env_name;
$this->config = $this->defaults();
$this->roles = array("app"=>null,"db"=>null);
}
public function load($plugin)
{
if (!class_exists($plugin)) {
$plugin = "\\Pomander\\$plugin";
if(!class_exists($plugin)) return abort("load","Could not load plugin {$plugin}");
}
$plugin::load($this);
}
public function set($options)
{
foreach((array) $options as $key=>$option)
if($option || $option === false) $this->$key = $option;
}
public function setup()
{
if($this->name == "development") $this->releases = false;
if ($this->releases === false) {
$this->current_dir = $this->deploy_to;
$this->releases_dir = $this->deploy_to;
$this->release_dir = $this->deploy_to;
$this->shared_dir = $this->deploy_to;
$this->cache_dir = $this->deploy_to;
} else {
$this->current_dir = $this->deploy_to.'/current';
$this->releases_dir = $this->deploy_to.'/releases';
$this->release_dir = $this->current_dir;
$this->shared_dir = $this->deploy_to.'/shared';
$this->cache_dir = $this->shared_dir.'/cached_copy';
}
$this->init_scm_adapter();
}
public function __call($name, $arguments)
{
if (array_key_exists($name, get_object_vars($this))) {
$this->config[$name] = array_shift($arguments);
} else {
$this->$name = array_shift($arguments);
}
return $this;
}
public function __get($prop)
{
if(!array_key_exists($prop, $this->config)) return null;
$value = $this->config[$prop];
return is_callable($value)? $value() : $value;
}
public function __isset($prop) { return isset($this->config[$prop]); }
public function __set($prop,$value)
{
if(!isset($this->config[$prop]) || !is_array($this->config[$prop])) return $this->config[$prop] = $value;
$this->config[$prop] = is_array($value) ? array_merge($this->config[$prop], $value) : $value;
}
public function new_release()
{
return date('Ymdhis');
}
public function role($key)
{
if(!$this->$key) return false;
if (!$this->roles[$key]) {
$targets = is_array($this->$key)? $this->$key : array($this->$key);
$this->roles[$key] = new Role($targets);
return $this->update_target($this->roles[$key]->target());
} else {
return $this->update_target($this->roles[$key]->next());
}
}
public function next_role($key)
{
if( !$this->roles[$key]) return false;
return $this->roles[$key]->has_target($this->roles[$key]->current+1);
}
public function multi_role_support($role,$app)
{
$this->role($role);
$tasks = $app->get_tasks();
foreach ($app->top_level_tasks as $task_name) {
try {
$task = $app->get_task($task_name);
if (!$task->has_dependencies()) continue;
$deps = $task->get_dependencies();
if ($this->dependency_needs_multi_role($role, $deps)) {
return $this->inject_multi_role_after($role, $task_name);
} else {
foreach ($deps as $dep_name=>$dep) {
if (!$dep->has_dependencies()) continue;
if ($this->dependency_needs_multi_role($role, $dep->get_dependencies())) {
return $this->inject_multi_role_after($role, $dep_name);
}
}
}
} catch (\Exception $e) {
continue;
}
}
}
public function exec($cmd)
{
if (!$this->target) return run_local($cmd);
if (!$this->shell) {
$keypass = $this->key_password;
$auth = is_null($this->password)? $this->key_path : $this->password;
$user = is_null($this->user)? get_current_user : $this->user;
$this->shell = new RemoteShell($this->target, $this->port, $user, $auth, $keypass);
}
return $this->shell->run($cmd);
}
public function put($what,$where)
{
if ($this->target)
$cmd = "{$this->rsync_cmd} -e \"ssh -i {$this->key_path}\" {$this->rsync_flags} $what {$this->user}@{$this->target}:$where";
else
$cmd = "cp -r $what $where";
return run_local($cmd);
}
public function get($what,$where)
{
if ($this->target)
$cmd = "{$this->rsync_cmd} -e \"ssh -i {$this->key_path}\" {$this->rsync_flags} {$this->user}@{$this->target}:$what $where";
else
$cmd = "cp -r $what $where";
return run_local($cmd);
}
private function defaults()
{
$defaults = array(
"url"=>"",
"user"=>"",
"repository"=>"",
"revision"=>"",
"branch"=>"master",
"remote_cache"=>true,
"releases"=>false,
"keep_releases"=>false,
"deploy_to"=>getcwd(),
"backup"=>false,
"app"=>"",
"db"=>"",
"method"=>"git",
"scm"=>"git",
"adapter"=>"mysql",
"port"=>22,
"umask"=>"002",
"key_path"=>home()."/.ssh/id_rsa",
"key_password"=>null,
"password"=>null,
"rsync_cmd"=>"rsync",
"rsync_flags"=>"-avuzPO --quiet",
"db_backup_flags"=>"--lock-tables=FALSE --skip-add-drop-table | sed -e 's|INSERT INTO|REPLACE INTO|' -e 's|CREATE TABLE|CREATE TABLE IF NOT EXISTS|'",
"db_swap_url"=>true,
"composer"=>false
);
return $defaults;
}
private function update_target($target)
{
if (!$target) return false;
if ($this->target == $target) return true;
if ($this->shell) $this->shell = null;
$this->target = $target;
info("target",$this->target);
return true;
}
private function init_scm_adapter()
{
$scm = "\\Pomander\\Scm\\".ucwords(strtolower($this->config["scm"]));
if( !$this->scm = new $scm($this->repository) )
abort("scm","There is no recipe for {$this->config["scm"]}, perhaps create your own?");
$adapter = "\\Pomander\\Db\\".ucwords(strtolower($this->config["adapter"]));
if (!$this->adapter = new $adapter($this->database))
abort("db","There is no recipe for {$this->config["adapter"]}, perhaps create your own?");
}
private function dependency_needs_multi_role($role, $deps)
{
if (in_array($role, array_keys($deps))) {
return true;
}
return false;
}
private function inject_multi_role_after($role,$task_name)
{
after($task_name, function ($app) use ($task_name,$role) {
if ($app->env->next_role($role)) {
$app->reset();
$app->invoke($task_name);
}
});
}
}