/**
* Add debugging information include queries and messages to output queue
*
* @param Util\Debug $debug
*/
protected function addDebug(Util\Debug $debug)
{
echo "level:\t" . $debug->getLevel() . PHP_EOL;
echo "database:\t" . Util\Configuration::read('db.driver') . PHP_EOL;
echo "time:\t" . $debug->getExecutionTime() . PHP_EOL;
if ($uptime = Util\Debug::getUptime()) {
echo "uptime:\t" . $uptime * 1000;
}
if ($load = Util\Debug::getLoadAvg()) {
echo "load:\t" . implode(', ', $load) . PHP_EOL;
}
if ($commit = Util\Debug::getCurrentCommit()) {
echo "commit-hash:\t" . $commit . PHP_EOL;
}
if ($version = phpversion()) {
echo "php-version:\t" . $version . PHP_EOL;
}
foreach ($debug->getMessages() as $message) {
echo "message:\t" . $message['message'] . PHP_EOL;
// TODO add more information
}
foreach ($debug->getQueries() as $query) {
echo "query:\t" . $query['sql'] . PHP_EOL;
if (isset($query['parameters'])) {
echo "\tparameters:\t" . implode(', ', $query['parameters']) . PHP_EOL;
}
}
}
/**
* Render response and send it to the client
*/
public function send()
{
if (Util\Debug::isActivated()) {
$this->add(Util\Debug::getInstance());
}
$this->response->setContent($this->render());
return $this->response;
}
/**
* @todo
* @param string $capabilities
* @param string $sub
*/
public function get($section = NULL)
{
$capabilities = array();
if (is_null($section) || $section == 'configuration') {
$configuration = array('precision' => View\View::PRECISION, 'database' => Util\Configuration::read('db.driver'), 'debug' => Util\Configuration::read('debug'), 'devmode' => Util\Configuration::read('devmode'));
if ($commit = Util\Debug::getCurrentCommit()) {
$configuration['commit'] = $commit;
}
$capabilities['configuration'] = $configuration;
}
// db statistics - only if specifically requested
if ($section == 'database') {
$conn = $this->em->getConnection();
// get DBAL connection from EntityManager
// estimate InnoDB tables to avoid performance penalty
$rows = $conn->fetchAssoc('EXPLAIN SELECT COUNT(id) FROM data USE INDEX (PRIMARY)');
if (isset($rows['rows'])) {
$rows = $rows['rows'];
} else {
// get correct values for MyISAM
$rows = $conn->fetchColumn('SELECT COUNT(1) FROM data');
}
// database disc space consumption
$sql = 'SELECT SUM(data_length + index_length) ' . 'FROM information_schema.tables ' . 'WHERE table_schema = ?';
$size = $conn->fetchColumn($sql, array(Util\Configuration::read('db.dbname')));
$aggregation = Util\Configuration::read('aggregation');
$database = array('data_rows' => $rows, 'data_size' => $size, 'aggregation_enabled' => $aggregation ? 1 : 0);
// aggregation table size
if ($aggregation) {
$agg_rows = $conn->fetchColumn('SELECT COUNT(1) FROM aggregate');
$database['aggregation_rows'] = $agg_rows;
$database['aggregation_ratio'] = $agg_rows ? $rows / $agg_rows : 0;
}
$capabilities['database'] = $database;
}
if (is_null($section) || $section == 'formats') {
$capabilities['formats'] = array_keys(Router::$viewMapping);
}
if (is_null($section) || $section == 'contexts') {
$capabilities['contexts'] = array_keys(Router::$controllerMapping);
}
if (is_null($section) || $section == 'definitions') {
// unresolved artifact from Symfony migration
// if (!is_null($section)) { // only caching when we don't request dynamic informations
// $this->view->setCaching('expires', time()+2*7*24*60*60); // cache for 2 weeks
// }
$capabilities['definitions']['entities'] = Definition\EntityDefinition::get();
$capabilities['definitions']['properties'] = Definition\PropertyDefinition::get();
}
if (count($capabilities) == 0) {
throw new \Exception('Invalid capability identifier: \'' . $section . '\'');
}
return array('capabilities' => $capabilities);
}
/**
* @param string $section select specific sub section for output
*/
public function get($section = NULL)
{
$capabilities = array();
if (is_null($section) || $section == 'configuration') {
$configuration = array('precision' => View\View::PRECISION, 'database' => Util\Configuration::read('db.driver'), 'debug' => Util\Configuration::read('debug'), 'devmode' => Util\Configuration::read('devmode'));
if ($commit = Util\Debug::getCurrentCommit()) {
$configuration['commit'] = $commit;
}
$capabilities['configuration'] = $configuration;
}
// db statistics - only if specifically requested
if ($section == 'database') {
$conn = $this->em->getConnection();
// get DBAL connection from EntityManager
// estimate InnoDB tables to avoid performance penalty
$rows = $this->sqlCount($conn, 'data');
$size = $this->dbSize($conn, 'data');
$aggregation = Util\Configuration::read('aggregation');
$database = array('data_rows' => $rows, 'data_size' => $size, 'aggregation_enabled' => $aggregation ? 1 : 0);
// aggregation table size
if ($aggregation) {
$agg_rows = $this->sqlCount($conn, 'aggregate');
$agg_size = $this->dbSize($conn, 'aggregate');
$database['aggregation_rows'] = $agg_rows;
$database['aggregation_size'] = $agg_size;
$database['aggregation_ratio'] = $agg_rows ? $rows / $agg_rows : 0;
}
$capabilities['database'] = $database;
}
if (is_null($section) || $section == 'formats') {
$capabilities['formats'] = array_keys(Router::$viewMapping);
}
if (is_null($section) || $section == 'contexts') {
$capabilities['contexts'] = array_keys(Router::$controllerMapping);
}
if (is_null($section) || $section == 'definitions') {
// unresolved artifact from Symfony migration
if (!is_null($section)) {
// only caching when we don't request dynamic informations
$this->view->setCaching('expires', time() + 2 * 7 * 24 * 60 * 60);
// cache for 2 weeks
}
$capabilities['definitions']['entities'] = Definition\EntityDefinition::get();
$capabilities['definitions']['properties'] = Definition\PropertyDefinition::get();
}
if (count($capabilities) == 0) {
throw new \Exception('Invalid capability identifier: \'' . $section . '\'');
}
return array('capabilities' => $capabilities);
}
/**
* Add exception to output queue
*
* @param \Exception $exception
* @param boolean $debug
*/
protected function addException(\Exception $exception)
{
$exceptionType = explode('\\', get_class($exception));
$exceptionInfo = array('message' => $exception->getMessage(), 'type' => end($exceptionType), 'code' => $exception->getCode());
if (Util\Debug::isActivated()) {
$debugInfo = array('file' => $exception->getFile(), 'line' => $exception->getLine(), 'backtrace' => $exception->getTrace());
$this->json['exception'] = array_merge($exceptionInfo, $debugInfo);
} else {
$this->json['exception'] = $exceptionInfo;
}
}
/**
* Add exception to output queue
*
* @param \Exception $exception
* @param boolean $debug
*/
protected function addException(\Exception $exception)
{
echo get_class($exception) . '# [' . $exception->getCode() . ']' . ':' . $exception->getMessage() . PHP_EOL;
if (Util\Debug::isActivated()) {
echo "#\tfile:" . CSV::DELIMITER . $exception->getFile() . PHP_EOL;
echo "#\tline:" . CSV::DELIMITER . $exception->getLine() . PHP_EOL;
}
}
/**
* Determine context, format and uuid of the raw request
*
* @param Request $request A Request instance
* @param int $type The type of the request (for Symfony compatibility, not implemented)
*
* @return Response A Response instance
*/
public function handleRaw(Request $request, $type = HttpKernelInterface::MASTER_REQUEST)
{
// workaround for https://github.com/symfony/symfony/issues/13617
$pathInfo = $request->server->has('PATH_INFO') ? $request->server->get('PATH_INFO') : '';
if (0 === strlen($pathInfo)) {
$pathInfo = $request->getPathInfo();
}
$format = pathinfo($pathInfo, PATHINFO_EXTENSION);
if (!array_key_exists($format, self::$viewMapping)) {
if (empty($pathInfo)) {
throw new \Exception('Missing or invalid PATH_INFO');
} elseif (empty($this->format)) {
throw new \Exception('Missing format');
} else {
throw new \Exception('Unknown format: \'' . $this->format . '\'');
}
}
// initialize debugging
if (($debugLevel = $request->query->get('debug')) || ($debugLevel = Util\Configuration::read('debug'))) {
if ($debugLevel > 0 && !Util\Debug::isActivated()) {
new Util\Debug($debugLevel, $this->em);
}
} else {
// make sure static debug instance is removed
Util\Debug::deactivate();
}
$class = self::$viewMapping[$format];
$this->view = new $class($request, $format);
$path = explode('/', substr($pathInfo, 1, strrpos($pathInfo, '.') - 1));
list($context, $uuid) = array_merge($path, array(null));
// verify route
if (!array_key_exists($context, self::$controllerMapping)) {
throw new \Exception(empty($context) ? 'Missing context' : 'Unknown context: \'' . $context . '\'');
}
return $this->handler($request, $context, $uuid);
}
* A test for our JSON utility class
*
* @package tests
* @copyright Copyright (c) 2011, The volkszaehler.org project
* @license http://www.gnu.org/licenses/gpl.txt GNU Public License
* @author Steffen Vogel <*****@*****.**>
*/
/*
* This file is part of volkzaehler.org
*
* volkzaehler.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* volkzaehler.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
*/
define('VZ_DIR', realpath(__DIR__ . '/../..'));
use Volkszaehler\Util;
include VZ_DIR . '/lib/Util/Debug.php';
echo '<pre>';
echo print_r(Util\Debug::getLoadAvg(), TRUE);
echo Util\Debug::getUptime() . "\n";
echo Util\Debug::getCurrentCommit();
echo '</pre>';
/**
* Add exception to output queue
*
* @param \Exception $exception
* @param boolean $debug
*/
protected function addException(\Exception $exception)
{
$exceptionType = explode('\\', get_class($exception));
$xmlException = $this->xmlDoc->createElement('exception');
$xmlException->setAttribute('code', $exception->getCode());
$xmlException->setAttribute('type', end($exceptionType));
$xmlException->appendChild($this->xmlDoc->createElement('message', $exception->getMessage()));
if (Util\Debug::isActivated()) {
$xmlException->appendChild($this->xmlDoc->createElement('file', $exception->getFile()));
$xmlException->appendChild($this->xmlDoc->createElement('line', $exception->getLine()));
$xmlException->appendChild($this->convertTrace($exception->getTrace()));
}
$this->xmlRoot->appendChild($xmlException);
}
/**
* Render response and send it to the client
*/
public function send()
{
if (Util\Debug::isActivated()) {
$this->add(Util\Debug::getInstance());
}
$this->render();
$this->response->send();
}
/**
* Core data aggregation
*
* @param int $channel_id id of channel to perform aggregation on
* @param string $interpreter interpreter class name
* @param string $mode aggregation mode (full, delta)
* @param string $level aggregation level (day...)
* @param int $period delta days to aggregate
* @return int number of rows
*/
protected function aggregateChannel($channel_id, $interpreter, $mode, $level, $period)
{
$format = self::getAggregationDateFormat($level);
$type = self::getAggregationLevelTypeValue($level);
$weighed_avg = $interpreter == 'Volkszaehler\\Interpreter\\SensorInterpreter';
$sqlParameters = array($type);
$sql = 'REPLACE INTO aggregate (channel_id, type, timestamp, value, count) ';
if ($weighed_avg) {
// get interpreter's aggregation function
$aggregationFunction = $interpreter::groupExprSQL('agg.value');
// SQL query similar to MySQLOptimizer group mode
$sql .= 'SELECT channel_id, ? AS type, ' . 'MAX(agg.timestamp) AS timestamp, ' . 'COALESCE( ' . 'SUM(agg.val_by_time) / (MAX(agg.timestamp) - MIN(agg.prev_timestamp)), ' . $aggregationFunction . ') AS value, ' . 'COUNT(agg.value) AS count ' . 'FROM ( ' . 'SELECT channel_id, timestamp, value, ' . 'value * (timestamp - @prev_timestamp) AS val_by_time, ' . 'GREATEST(0, IF(@prev_timestamp = NULL, NULL, @prev_timestamp)) AS prev_timestamp, ' . '@prev_timestamp := timestamp ' . 'FROM data ' . 'CROSS JOIN (SELECT @prev_timestamp := NULL) AS vars ' . 'WHERE ';
} else {
// get interpreter's aggregation function
$aggregationFunction = $interpreter::groupExprSQL('value');
$sql .= 'SELECT channel_id, ? AS type, MAX(timestamp) AS timestamp, ' . $aggregationFunction . ' AS value, COUNT(timestamp) AS count ' . 'FROM data WHERE ';
}
// selected channel only
if ($channel_id) {
$sqlParameters[] = $channel_id;
$sql .= 'channel_id = ? ';
}
// since last aggregation only
if ($mode == 'delta') {
if ($channel_id) {
// selected channel
$sqlTimestamp = 'SELECT UNIX_TIMESTAMP(DATE_ADD(' . 'FROM_UNIXTIME(MAX(timestamp) / 1000, ' . $format . '), ' . 'INTERVAL 1 ' . $level . ')) * 1000 ' . 'FROM aggregate ' . 'WHERE type = ? AND channel_id = ?';
if ($ts = $this->conn->fetchColumn($sqlTimestamp, array($type, $channel_id), 0)) {
$sqlParameters[] = $ts;
$sql .= 'AND timestamp >= ? ';
}
} else {
// all channels
$sqlParameters[] = $type;
$sql .= 'AND timestamp >= IFNULL((' . 'SELECT UNIX_TIMESTAMP(DATE_ADD(' . 'FROM_UNIXTIME(MAX(timestamp) / 1000, ' . $format . '), ' . 'INTERVAL 1 ' . $level . ')) * 1000 ' . 'FROM aggregate ' . 'WHERE type = ? AND aggregate.channel_id = data.channel_id ' . '), 0) ';
}
}
// selected number of periods only
if ($period) {
$sql .= 'AND timestamp >= (SELECT UNIX_TIMESTAMP(DATE_SUB(DATE_FORMAT(NOW(), ' . $format . '), INTERVAL ? ' . $level . ')) * 1000) ';
$sqlParameters[] = $period;
}
// up to before current period
$sql .= 'AND timestamp < UNIX_TIMESTAMP(DATE_FORMAT(NOW(), ' . $format . ')) * 1000 ';
if ($weighed_avg) {
// close inner table
$sql .= 'ORDER BY timestamp ' . ') AS agg ';
}
$sql .= 'GROUP BY channel_id, ' . Interpreter\Interpreter::buildGroupBySQL($level);
if (Util\Debug::isActivated()) {
echo Util\Debug::getParametrizedQuery($sql, $sqlParameters) . "\n";
}
$rows = $this->conn->executeUpdate($sql, $sqlParameters);
return $rows;
}
/**
* Processes the request
*
* Example: http://sub.domain.local/middleware.php/channel/550e8400-e29b-11d4-a716-446655440000/data.json?operation=edit&title=New Title
*/
function handler(Request $request, $context, $uuid)
{
// initialize debugging
if (($debugLevel = $request->parameters->get('debug')) || ($debugLevel = Util\Configuration::read('debug'))) {
if ($debugLevel > 0) {
$this->debug = new Util\Debug($debugLevel, $this->em);
}
} else {
// make sure static debug instance is removed
Util\Debug::deactivate();
}
// get controller operation
if (null === ($operation = $request->parameters->get('operation'))) {
$operation = self::$operationMapping[strtolower($request->getMethod())];
}
$class = self::$controllerMapping[$context];
$controller = new $class($request, $this->em);
$result = $controller->run($operation, $uuid);
$this->view->add($result);
return $this->view->send();
}
