summaryrefslogtreecommitdiffstats
path: root/vendor/gipfl/systemd
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/gipfl/systemd')
-rw-r--r--vendor/gipfl/systemd/LICENSE21
-rw-r--r--vendor/gipfl/systemd/composer.json26
-rw-r--r--vendor/gipfl/systemd/src/NotificationSocket.php122
-rw-r--r--vendor/gipfl/systemd/src/NotifySystemD.php292
-rw-r--r--vendor/gipfl/systemd/src/systemd.php19
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']);
+ }
+}