mirror of
https://github.com/Icinga/icingaweb2-module-businessprocess.git
synced 2026-02-10 22:43:04 -05:00
LegacyConfigParser: new parser class
Takes over and cleans up logic from LegacyStorage
This commit is contained in:
Thomas Gelf
parent
1acf06aaba
commit
c52c970528
2 changed files with 352 additions and 311 deletions
331
library/Businessprocess/Storage/LegacyConfigParser.php
Normal file
331
library/Businessprocess/Storage/LegacyConfigParser.php
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@ -0,0 +1,331 @@
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<?php
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namespace Icinga\Module\Businessprocess\Storage;
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use Icinga\Application\Benchmark;
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use Icinga\Exception\ConfigurationError;
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use Icinga\Exception\SystemPermissionException;
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use Icinga\Module\Businessprocess\BpNode;
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use Icinga\Module\Businessprocess\BusinessProcess;
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use Icinga\Module\Businessprocess\Metadata;
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class LegacyConfigParser
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{
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/** @var int */
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protected $currentLineNumber;
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/** @var string */
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protected $currentFilename;
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protected $name;
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/** @var BusinessProcess */
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protected $config;
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/**
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* LegacyConfigParser constructor
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*
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* @param $name
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*/
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private function __construct($name)
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{
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$this->name = $name;
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$this->config = new BusinessProcess();
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$this->config->setName($name);
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}
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/**
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* @return BusinessProcess
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*/
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public function getParsedConfig()
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{
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return $this->config;
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}
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public static function parseFile($name, $filename)
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{
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Benchmark::measure('Loading business process ' . $name);
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$parser = new static($name);
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$parser->reallyParseFile($filename);
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Benchmark::measure('Business process ' . $name . ' loaded');
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return $parser->getParsedConfig();
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}
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public static function parseString($name, $string)
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{
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Benchmark::measure('Loading BP config from file: ' . $name);
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$parser = new static($name);
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foreach (preg_split('/\n/', $string) as $line) {
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$parser->parseLine($line);
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}
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Benchmark::measure('Business process ' . $name . ' loaded');
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return $parser->getParsedConfig();
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}
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protected function reallyParseFile($filename)
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{
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$file = $this->currentFilename = $filename;
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$fh = @fopen($file, 'r');
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if (! $fh) {
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throw new SystemPermissionException('Could not open "%s"', $filename);
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}
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$config = $this->config;
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$config->setMetadata(
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$this::readMetadataFromFileHeader($config->getName(), $filename)
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);
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$this->currentLineNumber = 0;
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while ($line = fgets($fh)) {
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$this->parseLine($line);
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}
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fclose($fh);
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unset($this->currentLineNumber);
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unset($this->currentFilename);
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}
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public static function readMetadataFromFileHeader($name, $filename)
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{
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$metadata = new Metadata($name);
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$fh = fopen($filename, 'r');
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$cnt = 0;
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while ($cnt < 15 && false !== ($line = fgets($fh))) {
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$cnt++;
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static::parseHeaderLine($line, $metadata);
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}
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fclose($fh);
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return $metadata;
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}
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protected function splitCommaSeparated($string)
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{
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return preg_split('/\s*,\s*/', $string, -1, PREG_SPLIT_NO_EMPTY);
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}
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protected function readHeaderString($string, Metadata $metadata)
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{
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foreach (preg_split('/\n/', $string) as $line) {
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$this->parseHeaderLine($line, $metadata);
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}
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return $metadata;
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}
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/**
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* @return array
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*/
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protected function emptyHeader()
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{
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return array(
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'Title' => null,
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'Description' => null,
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'Owner' => null,
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'AllowedUsers' => null,
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'AllowedGroups' => null,
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'AllowedRoles' => null,
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'Backend' => null,
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'Statetype' => 'soft',
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'SLAHosts' => null
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);
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}
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/**
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* @param $line
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* @param Metadata $metadata
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*/
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protected static function parseHeaderLine($line, Metadata $metadata)
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{
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if (preg_match('/^\s*#\s+(.+?)\s*:\s*(.+)$/', $line, $m)) {
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if ($metadata->hasKey($m[1])) {
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$metadata->set($m[1], $m[2]);
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}
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}
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}
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/**
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* @param $line
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* @param BusinessProcess $bp
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*/
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protected function parseDisplay(& $line, BusinessProcess $bp)
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{
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list($display, $name, $desc) = preg_split('~\s*;\s*~', substr($line, 8), 3);
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$bp->getBpNode($name)->setAlias($desc)->setDisplay($display);
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if ($display > 0) {
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$bp->addRootNode($name);
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}
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}
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/**
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* @param $line
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* @param BusinessProcess $bp
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*/
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protected function parseExternalInfo(& $line, BusinessProcess $bp)
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{
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list($name, $script) = preg_split('~\s*;\s*~', substr($line, 14), 2);
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$bp->getBpNode($name)->setInfoCommand($script);
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}
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protected function parseExtraInfo(& $line, BusinessProcess $bp)
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{
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// TODO: Not yet
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// list($name, $script) = preg_split('~\s*;\s*~', substr($line, 14), 2);
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// $this->getNode($name)->setExtraInfo($script);
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}
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protected function parseInfoUrl(& $line, BusinessProcess $bp)
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{
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list($name, $url) = preg_split('~\s*;\s*~', substr($line, 9), 2);
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$bp->getBpNode($name)->setInfoUrl($url);
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}
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protected function parseExtraLine(& $line, $typeLength, BusinessProcess $bp)
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{
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$type = substr($line, 0, $typeLength);
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if (substr($type, 0, 7) === 'display') {
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$this->parseDisplay($line, $bp);
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return true;
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}
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switch ($type) {
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case 'external_info':
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$this->parseExternalInfo($line, $bp);
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break;
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case 'extra_info':
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$this->parseExtraInfo($line, $bp);
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break;
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case 'info_url':
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$this->parseInfoUrl($line, $bp);
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break;
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default:
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return false;
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}
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return true;
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}
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/**
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* Parses a single line
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*
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* Adds eventual new knowledge to the given Business Process config
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*
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* @param $line
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*
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* @throws ConfigurationError
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*/
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protected function parseLine(& $line)
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{
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$bp = $this->config;
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$line = trim($line);
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$this->currentLineNumber++;
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// Skip empty or comment-only lines
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if (empty($line) || $line[0] === '#') {
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return;
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}
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// Semicolon found in the first 14 cols? Might be a line with extra information
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$pos = strpos($line, ';');
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if ($pos !== false && $pos < 14) {
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if ($this->parseExtraLine($line, $pos, $bp)) {
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return;
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}
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}
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list($name, $value) = preg_split('~\s*=\s*~', $line, 2);
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if (strpos($name, ';') !== false) {
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$this->parseError('No semicolon allowed in varname');
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}
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$op = '&';
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if (preg_match_all('~([\|\+&\!])~', $value, $m)) {
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$op = implode('', $m[1]);
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for ($i = 1; $i < strlen($op); $i++) {
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if ($op[$i] !== $op[$i - 1]) {
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$this->parseError('Mixing operators is not allowed');
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}
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}
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}
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$op = $op[0];
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$op_name = $op;
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if ($op === '+') {
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if (! preg_match('~^(\d+)(?::(\d+))?\s*of:\s*(.+?)$~', $value, $m)) {
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$this->parseError('syntax: <var> = <num> of: <var1> + <var2> [+ <varn>]*');
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}
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$op_name = $m[1];
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// New feature: $minWarn = $m[2];
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$value = $m[3];
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}
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$cmps = preg_split('~\s*\\' . $op . '\s*~', $value, -1, PREG_SPLIT_NO_EMPTY);
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$childNames = array();
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foreach ($cmps as $val) {
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if (strpos($val, ';') !== false) {
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if ($bp->hasNode($val)) {
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$childNames[] = $val;
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continue;
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}
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list($host, $service) = preg_split('~;~', $val, 2);
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if ($service === 'Hoststatus') {
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$bp->createHost($host);
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} else {
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$bp->createService($host, $service);
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}
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}
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if ($val[0] === '@') {
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if (strpos($val, ':') === false) {
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throw new ConfigurationError(
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"I'm unable to import full external configs, a node needs to be provided for '%s'",
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$val
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);
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// TODO: this might work:
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// $node = $bp->createImportedNode(substr($val, 1));
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} else {
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list($config, $nodeName) = preg_split('~:\s*~', substr($val, 1), 2);
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$node = $bp->createImportedNode($config, $nodeName);
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}
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$val = $node->getName();
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}
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$childNames[] = $val;
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}
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$node = new BpNode($bp, (object) array(
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'name' => $name,
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'operator' => $op_name,
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'child_names' => $childNames
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));
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$bp->addNode($name, $node);
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}
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/**
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* @return string
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*/
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public function getFilename()
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{
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return $this->currentFilename ?: '[given string]';
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}
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/**
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* @param $msg
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* @throws ConfigurationError
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*/
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protected function parseError($msg)
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{
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throw new ConfigurationError(
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sprintf(
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'Parse error on %s:%s: %s',
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$this->getFilename(),
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$this->currentLineNumber,
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$msg
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)
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);
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}
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}
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@ -6,19 +6,12 @@ use DirectoryIterator;
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use Icinga\Application\Icinga;
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use Icinga\Module\Businessprocess\BusinessProcess;
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use Icinga\Exception\SystemPermissionException;
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use Icinga\Module\Businessprocess\Metadata;
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class LegacyStorage extends Storage
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{
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/** @var string */
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protected $configDir;
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/** @var int */
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protected $parsing_line_number;
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/** @var string */
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protected $currentFilename;
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public function getConfigDir()
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{
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if ($this->configDir === null) {
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@ -118,57 +111,17 @@ class LegacyStorage extends Storage
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return $files;
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}
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protected function splitCommaSeparated($string)
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/**
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* @inheritdoc
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*/
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public function loadProcess($name)
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{
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return preg_split('/\s*,\s*/', $string, -1, PREG_SPLIT_NO_EMPTY);
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}
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protected function readHeader($file, Metadata $metadata)
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{
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$fh = fopen($file, 'r');
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$cnt = 0;
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while ($cnt < 15 && false !== ($line = fgets($fh))) {
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$cnt++;
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$this->parseHeaderLine($line, $metadata);
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}
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fclose($fh);
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return $metadata;
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}
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protected function readHeaderString($string, Metadata $metadata)
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{
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foreach (preg_split('/\n/', $string) as $line) {
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$this->parseHeaderLine($line, $metadata);
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}
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return $metadata;
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}
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protected function emptyHeader()
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{
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return array(
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'Title' => null,
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'Description' => null,
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'Owner' => null,
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'AllowedUsers' => null,
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'AllowedGroups' => null,
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'AllowedRoles' => null,
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'Backend' => null,
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'Statetype' => 'soft',
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'SLAHosts' => null
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return LegacyConfigParser::parseFile(
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$name,
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$this->getFilename($name)
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);
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}
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protected function parseHeaderLine($line, Metadata $metadata)
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{
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if (preg_match('/^\s*#\s+(.+?)\s*:\s*(.+)$/', $line, $m)) {
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if ($metadata->hasKey($m[1])) {
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$metadata->set($m[1], $m[2]);
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}
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}
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}
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/**
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* @inheritdoc
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*/
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@ -180,46 +133,23 @@ class LegacyStorage extends Storage
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);
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}
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public function render(BusinessProcess $process)
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/**
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* @inheritdoc
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*/
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public function deleteProcess($name)
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{
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return $this->renderHeader($process)
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. $this->renderNodes($process);
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return @unlink($this->getFilename($name));
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}
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public function renderHeader(BusinessProcess $process)
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/**
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* @inheritdoc
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*/
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public function loadMetadata($name)
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{
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$conf = "### Business Process Config File ###\n#\n";
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$meta = $process->getMetadata();
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foreach ($meta->getProperties() as $key => $value) {
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if ($value === null) {
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continue;
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}
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$conf .= sprintf("# %-11s : %s\n", $key, $value);
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}
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$conf .= "#\n###################################\n\n";
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return $conf;
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}
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public function renderNodes(BusinessProcess $bp)
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{
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$rendered = array();
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$conf = '';
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foreach ($bp->getRootNodes() as $child) {
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$conf .= $child->toLegacyConfigString($rendered);
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$rendered[$child->getName()] = true;
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}
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foreach ($bp->getUnboundNodes() as $name => $node) {
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$conf .= $node->toLegacyConfigString($rendered);
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$rendered[$name] = true;
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}
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return $conf . "\n";
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return LegacyConfigParser::readMetadataFromFileHeader(
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$name,
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$this->getFilename($name)
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);
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}
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public function getSource($name)
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|
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@ -234,19 +164,7 @@ class LegacyStorage extends Storage
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public function loadFromString($name, $string)
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{
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$bp = new BusinessProcess();
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$bp->setName($name);
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$this->parseString($string, $bp);
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$this->readHeaderString($string, $bp->getMetadata());
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return $bp;
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}
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/**
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* @inheritdoc
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*/
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public function deleteProcess($name)
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{
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return @unlink($this->getFilename($name));
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return LegacyConfigParser::parseString($name, $string);
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}
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/**
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@ -262,212 +180,4 @@ class LegacyStorage extends Storage
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return $this->loadMetadata($name)->canRead();
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}
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public function loadMetadata($name)
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{
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$metadata = new Metadata($name);
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return $this->readHeader($this->getFilename($name), $metadata);
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}
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/**
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* @param string $name
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* @param BusinessProcess $bp
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*/
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protected function loadHeader($name, $bp)
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{
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// TODO: do not open twice, this is quick and dirty based on existing code
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$file = $this->currentFilename = $this->getFilename($name);
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$this->readHeader($file, $bp->getMetadata());
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}
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protected function parseFile($name, $bp)
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{
|
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$file = $this->currentFilename = $this->getFilename($name);
|
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$fh = @fopen($file, 'r');
|
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if (! $fh) {
|
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throw new SystemPermissionException('Could not open "%s"', $file);
|
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}
|
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$this->parsing_line_number = 0;
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while ($line = fgets($fh)) {
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$this->parseLine($line, $bp);
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}
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fclose($fh);
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unset($this->parsing_line_number);
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unset($this->currentFilename);
|
||||
}
|
||||
|
||||
protected function parseString($string, BusinessProcess $bp)
|
||||
{
|
||||
foreach (preg_split('/\n/', $string) as $line) {
|
||||
$this->parseLine($line, $bp);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param $line
|
||||
* @param BusinessProcess $bp
|
||||
*/
|
||||
protected function parseDisplay(& $line, BusinessProcess $bp)
|
||||
{
|
||||
list($display, $name, $desc) = preg_split('~\s*;\s*~', substr($line, 8), 3);
|
||||
$bp->getNode($name)->setAlias($desc)->setDisplay($display);
|
||||
if ($display > 0) {
|
||||
$bp->addRootNode($name);
|
||||
}
|
||||
}
|
||||
|
||||
protected function parseExternalInfo(& $line, BusinessProcess $bp)
|
||||
{
|
||||
list($name, $script) = preg_split('~\s*;\s*~', substr($line, 14), 2);
|
||||
$bp->getNode($name)->setInfoCommand($script);
|
||||
}
|
||||
|
||||
protected function parseExtraInfo(& $line, BusinessProcess $bp)
|
||||
{
|
||||
// TODO: Not yet
|
||||
// list($name, $script) = preg_split('~\s*;\s*~', substr($line, 14), 2);
|
||||
// $this->getNode($name)->setExtraInfo($script);
|
||||
}
|
||||
|
||||
protected function parseInfoUrl(& $line, BusinessProcess $bp)
|
||||
{
|
||||
list($name, $url) = preg_split('~\s*;\s*~', substr($line, 9), 2);
|
||||
$bp->getNode($name)->setInfoUrl($url);
|
||||
}
|
||||
|
||||
protected function parseExtraLine(& $line, $typeLength, BusinessProcess $bp)
|
||||
{
|
||||
$type = substr($line, 0, $typeLength);
|
||||
if (substr($type, 0, 7) === 'display') {
|
||||
$this->parseDisplay($line, $bp);
|
||||
return true;
|
||||
}
|
||||
|
||||
switch ($type) {
|
||||
case 'external_info':
|
||||
$this->parseExternalInfo($line, $bp);
|
||||
break;
|
||||
case 'extra_info':
|
||||
$this->parseExtraInfo($line, $bp);
|
||||
break;
|
||||
case 'info_url':
|
||||
$this->parseInfoUrl($line, $bp);
|
||||
break;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parses a single line
|
||||
*
|
||||
* Adds eventual new knowledge to the given Business Process config
|
||||
*
|
||||
* @param $line
|
||||
* @param $bp
|
||||
|
||||
*/
|
||||
protected function parseLine(& $line, BusinessProcess $bp)
|
||||
{
|
||||
$line = trim($line);
|
||||
|
||||
$this->parsing_line_number++;
|
||||
|
||||
// Skip empty or comment-only lines
|
||||
if (empty($line) || $line[0] === '#') {
|
||||
return;
|
||||
}
|
||||
|
||||
// Semicolon found in the first 14 cols? Might be a line with extra information
|
||||
$pos = strpos($line, ';');
|
||||
if ($pos !== false && $pos < 14) {
|
||||
if ($this->parseExtraLine($line, $pos, $bp)) {
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
list($name, $value) = preg_split('~\s*=\s*~', $line, 2);
|
||||
|
||||
if (strpos($name, ';') !== false) {
|
||||
$this->parseError('No semicolon allowed in varname');
|
||||
}
|
||||
|
||||
$op = '&';
|
||||
if (preg_match_all('~([\|\+&\!])~', $value, $m)) {
|
||||
$op = implode('', $m[1]);
|
||||
for ($i = 1; $i < strlen($op); $i++) {
|
||||
if ($op[$i] !== $op[$i - 1]) {
|
||||
$this->parseError('Mixing operators is not allowed');
|
||||
}
|
||||
}
|
||||
}
|
||||
$op = $op[0];
|
||||
$op_name = $op;
|
||||
|
||||
if ($op === '+') {
|
||||
if (! preg_match('~^(\d+)(?::(\d+))?\s*of:\s*(.+?)$~', $value, $m)) {
|
||||
$this->parseError('syntax: <var> = <num> of: <var1> + <var2> [+ <varn>]*');
|
||||
}
|
||||
$op_name = $m[1];
|
||||
// New feature: $minWarn = $m[2];
|
||||
$value = $m[3];
|
||||
}
|
||||
$cmps = preg_split('~\s*\\' . $op . '\s*~', $value, -1, PREG_SPLIT_NO_EMPTY);
|
||||
$childNames = array();
|
||||
|
||||
foreach ($cmps as $val) {
|
||||
if (strpos($val, ';') !== false) {
|
||||
if ($bp->hasNode($val)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
list($host, $service) = preg_split('~;~', $val, 2);
|
||||
if ($service === 'Hoststatus') {
|
||||
$bp->createHost($host);
|
||||
} else {
|
||||
$bp->createService($host, $service);
|
||||
}
|
||||
}
|
||||
if ($val[0] === '@') {
|
||||
if (strpos($val, ':') === false) {
|
||||
throw new ConfigurationError(
|
||||
"I'm unable to import full external configs, a node needs to be provided for '%s'",
|
||||
$val
|
||||
);
|
||||
// TODO: this might work:
|
||||
// $node = $bp->createImportedNode(substr($val, 1));
|
||||
} else {
|
||||
list($config, $nodeName) = preg_split('~:\s*~', substr($val, 1), 2);
|
||||
$node = $bp->createImportedNode($config, $nodeName);
|
||||
}
|
||||
$val = $node->getName();
|
||||
}
|
||||
|
||||
$childNames[] = $val;
|
||||
}
|
||||
|
||||
$node = new BpNode($bp, (object) array(
|
||||
'name' => $name,
|
||||
'operator' => $op_name,
|
||||
'child_names' => $childNames
|
||||
));
|
||||
|
||||
$bp->addNode($name, $node);
|
||||
}
|
||||
|
||||
protected function parseError($msg)
|
||||
{
|
||||
throw new ConfigurationError(
|
||||
sprintf(
|
||||
'Parse error on %s:%s: %s',
|
||||
$this->currentFilename,
|
||||
$this->parsing_line_number,
|
||||
$msg
|
||||
)
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue