diff options
Diffstat (limited to 'vendor/gipfl/systemd')
-rw-r--r-- | vendor/gipfl/systemd/LICENSE | 21 | ||||
-rw-r--r-- | vendor/gipfl/systemd/composer.json | 26 | ||||
-rw-r--r-- | vendor/gipfl/systemd/src/NotificationSocket.php | 122 | ||||
-rw-r--r-- | vendor/gipfl/systemd/src/NotifySystemD.php | 292 | ||||
-rw-r--r-- | vendor/gipfl/systemd/src/systemd.php | 19 |
5 files changed, 480 insertions, 0 deletions
diff --git a/vendor/gipfl/systemd/LICENSE b/vendor/gipfl/systemd/LICENSE new file mode 100644 index 0000000..dd88e09 --- /dev/null +++ b/vendor/gipfl/systemd/LICENSE @@ -0,0 +1,21 @@ +The MIT License + +Copyright (c) 2018 Thomas Gelf + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/vendor/gipfl/systemd/composer.json b/vendor/gipfl/systemd/composer.json new file mode 100644 index 0000000..d751bee --- /dev/null +++ b/vendor/gipfl/systemd/composer.json @@ -0,0 +1,26 @@ +{ + "name": "gipfl/systemd", + "description": "SystemD-related library", + "type": "library", + "license": "MIT", + "authors": [ + { + "name": "Thomas Gelf", + "email": "thomas@gelf.net" + } + ], + "config": { + "sort-packages": true + }, + "autoload": { + "psr-4": { + "gipfl\\SystemD\\": "src" + } + }, + "require": { + "php": ">=5.6.3", + "ext-posix": "*", + "ext-sockets": "*", + "react/event-loop": "^1.0" + } +} diff --git a/vendor/gipfl/systemd/src/NotificationSocket.php b/vendor/gipfl/systemd/src/NotificationSocket.php new file mode 100644 index 0000000..fe4a687 --- /dev/null +++ b/vendor/gipfl/systemd/src/NotificationSocket.php @@ -0,0 +1,122 @@ +<?php + +namespace gipfl\SystemD; + +use RuntimeException; +use function file_exists; +use function is_writable; + +class NotificationSocket +{ + /** @var resource */ + protected $socket; + + public function __construct($path) + { + if (@file_exists($path) && is_writable($path)) { + $this->path = $path; + } else { + throw new RuntimeException("Unix Socket '$path' is not writable"); + } + + $this->connect(); + } + + /** + * Send custom parameters to systemd + * + * This is for internal use only, but might be used to test new functionality + * + * @param array $params + * @internal + */ + public function send(array $params) + { + $message = $this->buildMessage($params); + $length = \strlen($message); + $result = @socket_send($this->socket, $message, $length, 0); + if ($result === false) { + $error = \socket_last_error($this->socket); + + throw new RuntimeException( + "Failed to send to SystemD: " . \socket_strerror($error), + $error + ); + } + if ($result !== $length) { + throw new RuntimeException( + "Wanted to send $length Bytes to SystemD, only $result have been sent" + ); + } + } + + /** + * Get the path to the the systemd notification socket + * + * Usually /run/systemd/notify or similar + * + * @return string + */ + public function getPath() + { + return $this->path; + } + + /** + * Transforms a key/value array into a string like "key1=val1\nkey2=val2" + * + * @param array $params + * @return string + */ + protected function buildMessage(array $params) + { + $message = ''; + foreach ($params as $key => $value) { + $message .= "$key=$value\n"; + } + + return $message; + } + + /** + * Connect to the discovered socket + * + * Will be /run/systemd/notify or similar. No async logic, as this + * shouldn't block. If systemd blocks we're dead anyways, so who cares + */ + protected function connect() + { + $path = $this->path; + $socket = @\socket_create(AF_UNIX, SOCK_DGRAM, 0); + if ($socket === false) { + throw new RuntimeException('Unable to create socket'); + } + + if (! @\socket_connect($socket, $path)) { + $error = \socket_last_error($socket); + + throw new RuntimeException( + "Unable to connect to unix domain socket $path: " . \socket_strerror($error), + $error + ); + } + + $this->socket = $socket; + } + + /** + * Disconnect the socket if connected + */ + public function disconnect() + { + if (\is_resource($this->socket)) { + @\socket_close($this->socket); + $this->socket = null; + } + } + + public function __destruct() + { + $this->disconnect(); + } +} diff --git a/vendor/gipfl/systemd/src/NotifySystemD.php b/vendor/gipfl/systemd/src/NotifySystemD.php new file mode 100644 index 0000000..0561fd6 --- /dev/null +++ b/vendor/gipfl/systemd/src/NotifySystemD.php @@ -0,0 +1,292 @@ +<?php + +namespace gipfl\SystemD; + +use Exception; +use InvalidArgumentException; +use React\EventLoop\LoopInterface; +use React\EventLoop\TimerInterface; +use RuntimeException; + +class NotifySystemD +{ + /** @var LoopInterface */ + protected $loop; + + /** @var TimerInterface */ + protected $timer; + + /** @var string|null */ + protected $path; + + /** @var string|null */ + protected $status; + + /** @var float */ + protected $interval; + + /** @var bool */ + protected $reloading = false; + + /** @var bool */ + protected $ready = false; + + /** @var bool */ + protected $failed = false; + + /** @var string|null The Invocation ID (128bit UUID) if available */ + protected $invocationId; + + protected $notificationSocket; + + /** + * NotifySystemD constructor. + * @param string $notifySocket + * @param int $intervalSecs + */ + public function __construct($notifySocket, $intervalSecs = 1) + { + $this->interval = $intervalSecs; + $this->notificationSocket = new NotificationSocket($notifySocket); + } + + /** + * Starts sending WatchDog pings + * + * @param LoopInterface $loop + */ + public function run(LoopInterface $loop) + { + $this->loop = $loop; + $ping = function () { + try { + $this->pingWatchDog(); + } catch (Exception $e) { + printf( + "<%d>Failed to ping systemd watchdog: %s\n", + LOG_ERR, + $e->getMessage() + ); + } + }; + $loop->futureTick($ping); + $this->timer = $loop->addPeriodicTimer($this->interval, $ping); + + return $this; + } + + /** + * Stop sending watchdog notifications + * + * Usually there is no need to do so, and the destructor does this anyways + */ + public function stop() + { + if ($this->timer !== null) { + $this->loop->cancelTimer($this->timer); + } + } + + public static function ifRequired(LoopInterface $loop, $env = null) + { + if ($env === null) { + $env = $_SERVER; + } + + if (! systemd::startedThisProcess($env)) { + return false; + } + + if (isset($env['WATCHDOG_USEC'])) { + $interval = $env['WATCHDOG_USEC'] / 2000000; // Half of that time + } else { + $interval = 1; + } + + return (new static($env['NOTIFY_SOCKET'], $interval)) + ->eventuallySetInvocationIdFromEnv($env) + ->run($loop); + } + + /** + * Extend the Watchdog timeout + * + * Useful to inform systemd before slow startup/shutdown operations. This + * is available since systemd v236. Older versions silently ignore this. + * + * @param float $seconds + */ + public function extendTimeout($seconds) + { + $this->send(['EXTEND_TIMEOUT_USEC' => (int) $seconds * 1000000]); + } + + /** + * Send a notification to the systemd watchdog + */ + public function pingWatchDog() + { + $this->send(['WATCHDOG' => '1']); + } + + /** + * Set the (visible) service status + * + * @param $status + */ + public function setStatus($status) + { + if ($status !== $this->status) { + $this->status = $status; + $this->send(['STATUS' => $status]); + } + } + + public function setReloading($status = null) + { + $this->ready = false; + $this->status = $status; + $params = ['RELOADING' => '1']; + if ($status !== null) { + $params['STATUS'] = $status; + } + $this->send($params); + } + + public function setError($error, $status = null) + { + $this->ready = false; + $this->status = $status; + if ($error instanceof Exception) { + $errNo = $error->getCode(); + $status = $status ?: $error->getMessage(); + } elseif (\is_int($error)) { + $errNo = $error; + } else { + throw new InvalidArgumentException( + 'Error has to be an Exception or an Integer' + ); + } + $params = []; + if ($status !== null) { + $params['STATUS'] = $status; + $this->status = $status; + } + + $params = ['ERRNO' => (string) $errNo]; + $this->send($params); + $this->failed = true; + } + + public function setReady($status = null) + { + $this->ready = true; + $params = [ + 'READY' => '1', + 'MAINPID' => \posix_getpid(), + ]; + + if ($status !== null) { + $params['STATUS'] = $status; + $this->status = $status; + } + + $this->send($params); + } + + /** + * Returns a 128bit uuid (16 hex characters) Invocation ID if available, + * null in case there isn't + * + * @return string|null + */ + public function getInvocationId() + { + return $this->invocationId; + } + + /** + * Whether we got an Invocation ID + * + * @return bool + */ + public function hasInvocationId() + { + return $this->invocationId !== null; + } + + /** + * Get the path to the the systemd notification socket + * + * Usually /run/systemd/notify or similar + * + * @return string + */ + public function getSocketPath() + { + return $this->notificationSocket->getPath(); + } + + /** + * Our Watchdog interval in seconds + * + * This is a float value: half of WATCHDOG_USEC if given - otherwise 1 second + * + * @return float + */ + public function getWatchdogInterval() + { + return $this->interval; + } + + /** + * Send custom parameters to systemd + * + * This is for internal use only, but might be used to test new functionality + * + * @param array $params + * @internal + */ + public function send(array $params) + { + if ($this->failed) { + throw new RuntimeException('Cannot notify SystemD after failing'); + } + + $this->notificationSocket->send($params); + } + + /** + * If INVOCATION_ID is available in the given ENV array: keep it + * + * Fails in case we do not get an 128bit string + * + * @param array $env + * @return $this + */ + protected function eventuallySetInvocationIdFromEnv(array $env) + { + $key = 'INVOCATION_ID'; + if (isset($env[$key])) { + if (\strlen($env[$key]) === 32) { + $this->invocationId = $env[$key]; + } else { + throw new RuntimeException(sprintf( + 'Unsupported %s="%s"', + $key, + $env['$key'] + )); + } + } + + return $this; + } + + public function __destruct() + { + $this->notificationSocket->disconnect(); + $this->notificationSocket = null; + $this->stop(); + unset($this->loop); + } +} diff --git a/vendor/gipfl/systemd/src/systemd.php b/vendor/gipfl/systemd/src/systemd.php new file mode 100644 index 0000000..7894a8f --- /dev/null +++ b/vendor/gipfl/systemd/src/systemd.php @@ -0,0 +1,19 @@ +<?php + +namespace gipfl\SystemD; + +class systemd +{ + /** + * @param null $env + * @return bool + */ + public static function startedThisProcess($env = null) + { + if ($env === null) { + $env = $_SERVER; + } + + return isset($env['NOTIFY_SOCKET']); + } +} |