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DiffusionCommandEngine.php
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Thu, Mar 20, 06:48

DiffusionCommandEngine.php
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<?php
abstract class DiffusionCommandEngine extends Phobject {
private $repository;
private $protocol;
private $credentialPHID;
private $argv;
private $passthru;
private $connectAsDevice;
private $sudoAsDaemon;
public static function newCommandEngine(PhabricatorRepository $repository) {
$engines = self::newCommandEngines();
foreach ($engines as $engine) {
if ($engine->canBuildForRepository($repository)) {
return id(clone $engine)
->setRepository($repository);
}
}
throw new Exception(
pht(
'No registered command engine can build commands for this '.
'repository ("%s").',
$repository->getDisplayName()));
}
private static function newCommandEngines() {
return id(new PhutilClassMapQuery())
->setAncestorClass(__CLASS__)
->execute();
}
abstract protected function canBuildForRepository(
PhabricatorRepository $repository);
abstract protected function newFormattedCommand($pattern, array $argv);
abstract protected function newCustomEnvironment();
public function setRepository(PhabricatorRepository $repository) {
$this->repository = $repository;
return $this;
}
public function getRepository() {
return $this->repository;
}
public function setProtocol($protocol) {
$this->protocol = $protocol;
return $this;
}
public function getProtocol() {
return $this->protocol;
}
public function setCredentialPHID($credential_phid) {
$this->credentialPHID = $credential_phid;
return $this;
}
public function getCredentialPHID() {
return $this->credentialPHID;
}
public function setArgv(array $argv) {
$this->argv = $argv;
return $this;
}
public function getArgv() {
return $this->argv;
}
public function setPassthru($passthru) {
$this->passthru = $passthru;
return $this;
}
public function getPassthru() {
return $this->passthru;
}
public function setConnectAsDevice($connect_as_device) {
$this->connectAsDevice = $connect_as_device;
return $this;
}
public function getConnectAsDevice() {
return $this->connectAsDevice;
}
public function setSudoAsDaemon($sudo_as_daemon) {
$this->sudoAsDaemon = $sudo_as_daemon;
return $this;
}
public function getSudoAsDaemon() {
return $this->sudoAsDaemon;
}
public function newFuture() {
$argv = $this->newCommandArgv();
$env = $this->newCommandEnvironment();
if ($this->getSudoAsDaemon()) {
$command = call_user_func_array('csprintf', $argv);
$command = PhabricatorDaemon::sudoCommandAsDaemonUser($command);
$argv = array('%C', $command);
}
if ($this->getPassthru()) {
$future = newv('PhutilExecPassthru', $argv);
} else {
$future = newv('ExecFuture', $argv);
}
$future->setEnv($env);
return $future;
}
private function newCommandArgv() {
$argv = $this->argv;
$pattern = $argv[0];
$argv = array_slice($argv, 1);
list($pattern, $argv) = $this->newFormattedCommand($pattern, $argv);
return array_merge(array($pattern), $argv);
}
private function newCommandEnvironment() {
$env = $this->newCommonEnvironment() + $this->newCustomEnvironment();
foreach ($env as $key => $value) {
if ($value === null) {
unset($env[$key]);
}
}
return $env;
}
private function newCommonEnvironment() {
$repository = $this->getRepository();
$env = array();
// NOTE: Force the language to "en_US.UTF-8", which overrides locale
// settings. This makes stuff print in English instead of, e.g., French,
// so we can parse the output of some commands, error messages, etc.
$env['LANG'] = 'en_US.UTF-8';
// Propagate PHABRICATOR_ENV explicitly. For discussion, see T4155.
$env['PHABRICATOR_ENV'] = PhabricatorEnv::getSelectedEnvironmentName();
$as_device = $this->getConnectAsDevice();
$credential_phid = $this->getCredentialPHID();
if ($as_device) {
$device = AlmanacKeys::getLiveDevice();
if (!$device) {
throw new Exception(
pht(
'Attempting to build a reposiory command (for repository "%s") '.
'as device, but this host ("%s") is not configured as a cluster '.
'device.',
$repository->getDisplayName(),
php_uname('n')));
}
if ($credential_phid) {
throw new Exception(
pht(
'Attempting to build a repository command (for repository "%s"), '.
'but the CommandEngine is configured to connect as both the '.
'current cluster device ("%s") and with a specific credential '.
'("%s"). These options are mutually exclusive. Connections must '.
'authenticate as one or the other, not both.',
$repository->getDisplayName(),
$device->getName(),
$credential_phid));
}
}
if ($this->isAnySSHProtocol()) {
if ($credential_phid) {
$env['PHABRICATOR_CREDENTIAL'] = $credential_phid;
}
if ($as_device) {
$env['PHABRICATOR_AS_DEVICE'] = 1;
}
}
return $env;
}
protected function isSSHProtocol() {
return ($this->getProtocol() == 'ssh');
}
protected function isSVNProtocol() {
return ($this->getProtocol() == 'svn');
}
protected function isSVNSSHProtocol() {
return ($this->getProtocol() == 'svn+ssh');
}
protected function isHTTPProtocol() {
return ($this->getProtocol() == 'http');
}
protected function isHTTPSProtocol() {
return ($this->getProtocol() == 'https');
}
protected function isAnyHTTPProtocol() {
return ($this->isHTTPProtocol() || $this->isHTTPSProtocol());
}
protected function isAnySSHProtocol() {
return ($this->isSSHProtocol() || $this->isSVNSSHProtocol());
}
protected function getSSHWrapper() {
$root = dirname(phutil_get_library_root('phabricator'));
return $root.'/bin/ssh-connect';
}
}

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