849 lines
25 KiB
PHP
849 lines
25 KiB
PHP
<?php
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namespace Icinga\Module\Director\Import;
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use Exception;
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use Icinga\Application\Benchmark;
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use Icinga\Data\Filter\Filter;
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use Icinga\Module\Director\Application\MemoryLimit;
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use Icinga\Module\Director\Data\Db\DbObject;
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use Icinga\Module\Director\Db;
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use Icinga\Module\Director\Db\Cache\PrefetchCache;
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use Icinga\Module\Director\Objects\HostGroupMembershipResolver;
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use Icinga\Module\Director\Objects\IcingaHost;
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use Icinga\Module\Director\Objects\IcingaHostGroup;
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use Icinga\Module\Director\Objects\IcingaObject;
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use Icinga\Module\Director\Objects\ImportSource;
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use Icinga\Module\Director\Objects\IcingaService;
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use Icinga\Module\Director\Objects\SyncProperty;
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use Icinga\Module\Director\Objects\SyncRule;
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use Icinga\Module\Director\Objects\SyncRun;
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use Icinga\Exception\IcingaException;
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use Icinga\Module\Director\Repository\IcingaTemplateRepository;
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use InvalidArgumentException;
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use RuntimeException;
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class Sync
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{
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/** @var SyncRule */
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protected $rule;
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/** @var Db */
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protected $db;
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/** @var array Related ImportSource objects */
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protected $sources;
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/** @var array Source columns we want to fetch from our sources */
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protected $sourceColumns;
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/** @var array Imported data */
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protected $imported;
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/** @var IcingaObject[] Objects to work with */
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protected $objects;
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/** @var bool Whether we already prepared your sync */
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protected $isPrepared = false;
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protected $modify = [];
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protected $remove = [];
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protected $create = [];
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protected $errors = [];
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/** @var SyncProperty[] */
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protected $syncProperties;
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protected $replaceVars = false;
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protected $hasPropertyDisabled = false;
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protected $serviceOverrideKeyName;
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/**
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* @var SyncRun
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*/
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protected $run;
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protected $runStartTime;
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/** @var Filter[] */
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protected $columnFilters = [];
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/** @var HostGroupMembershipResolver|bool */
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protected $hostGroupMembershipResolver;
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/**
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* @param SyncRule $rule
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*/
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public function __construct(SyncRule $rule)
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{
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$this->rule = $rule;
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$this->db = $rule->getConnection();
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}
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/**
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* Whether the given sync rule would apply modifications
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*
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* @return boolean
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* @throws Exception
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*/
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public function hasModifications()
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{
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return count($this->getExpectedModifications()) > 0;
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}
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/**
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* Retrieve modifications a given SyncRule would apply
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*
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* @return array Array of IcingaObject elements
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* @throws \Icinga\Exception\NotFoundError
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* @throws \Icinga\Module\Director\Exception\DuplicateKeyException
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*/
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public function getExpectedModifications()
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{
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$modified = [];
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$objects = $this->prepare();
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$updateOnly = $this->rule->get('update_policy') === 'update-only';
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$allowCreate = ! $updateOnly;
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foreach ($objects as $object) {
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if ($object->hasBeenModified()) {
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if ($allowCreate || $object->hasBeenLoadedFromDb()) {
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$modified[] = $object;
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}
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} elseif (! $updateOnly && $object->shouldBeRemoved()) {
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$modified[] = $object;
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}
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}
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return $modified;
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}
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/**
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* Transform the given value to an array
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*
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* @param array|string|null $value
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*
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* @return array
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*/
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protected function wantArray($value)
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{
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if (is_array($value)) {
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return $value;
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} elseif ($value === null) {
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return [];
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} else {
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return [$value];
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}
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}
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/**
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* Raise PHP resource limits
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*
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* @return self;
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*/
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protected function raiseLimits()
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{
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MemoryLimit::raiseTo('1024M');
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ini_set('max_execution_time', 0);
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return $this;
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}
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/**
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* Initialize run summary measurements
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*
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* @return self;
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*/
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protected function startMeasurements()
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{
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$this->run = SyncRun::start($this->rule);
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$this->runStartTime = microtime(true);
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Benchmark::measure('Starting sync');
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return $this;
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}
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/**
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* Fetch the configured properties involved in this sync
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*
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* @return self
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*/
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protected function fetchSyncProperties()
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{
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$this->syncProperties = $this->rule->getSyncProperties();
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foreach ($this->syncProperties as $key => $prop) {
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$destinationField = $prop->get('destination_field');
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if ($destinationField === 'vars' && $prop->get('merge_policy') === 'override') {
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$this->replaceVars = true;
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}
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if ($destinationField === 'disabled') {
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$this->hasPropertyDisabled = true;
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}
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if ($prop->get('filter_expression') === null || strlen($prop->get('filter_expression')) === 0) {
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continue;
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}
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$this->columnFilters[$key] = Filter::fromQueryString(
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$prop->get('filter_expression')
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);
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}
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return $this;
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}
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protected function rowMatchesPropertyFilter($row, $key)
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{
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if (!array_key_exists($key, $this->columnFilters)) {
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return true;
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}
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return $this->columnFilters[$key]->matches($row);
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}
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/**
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* Instantiates all related ImportSource objects
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*
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* @return self
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* @throws \Icinga\Exception\NotFoundError
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*/
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protected function prepareRelatedImportSources()
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{
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$this->sources = [];
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foreach ($this->syncProperties as $p) {
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$id = $p->get('source_id');
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if (! array_key_exists($id, $this->sources)) {
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$this->sources[$id] = ImportSource::loadWithAutoIncId(
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(int) $id,
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$this->db
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);
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}
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}
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return $this;
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}
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/**
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* Prepare the source columns we want to fetch
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*
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* @return self
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*/
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protected function prepareSourceColumns()
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{
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// $fieldMap = [];
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$this->sourceColumns = [];
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foreach ($this->syncProperties as $p) {
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$sourceId = $p->get('source_id');
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if (! array_key_exists($sourceId, $this->sourceColumns)) {
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$this->sourceColumns[$sourceId] = [];
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}
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foreach (SyncUtils::extractVariableNames($p->get('source_expression')) as $varname) {
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$this->sourceColumns[$sourceId][$varname] = $varname;
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// -> ? $fieldMap[
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}
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}
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return $this;
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}
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/**
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* Fetch latest imported data rows from all involved import sources
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* @return Sync
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* @throws \Icinga\Exception\NotFoundError
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*/
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protected function fetchImportedData()
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{
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Benchmark::measure('Begin loading imported data');
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if ($this->rule->get('object_type') === 'host') {
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$this->serviceOverrideKeyName = $this->db->settings()->override_services_varname;
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}
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$this->imported = [];
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$sourceKeyPattern = $this->rule->getSourceKeyPattern();
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$combinedKey = $this->rule->hasCombinedKey();
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foreach ($this->sources as $source) {
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/** @var ImportSource $source */
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$sourceId = $source->get('id');
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// Provide an alias column for our key. TODO: double-check this!
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$key = $source->key_column;
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$this->sourceColumns[$sourceId][$key] = $key;
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$run = $source->fetchLastRun(true);
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$usedColumns = SyncUtils::getRootVariables($this->sourceColumns[$sourceId]);
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$filterColumns = [];
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foreach ($this->columnFilters as $filter) {
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foreach ($filter->listFilteredColumns() as $column) {
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$filterColumns[$column] = $column;
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}
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}
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if (($ruleFilter = $this->rule->filter()) !== null) {
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foreach ($ruleFilter->listFilteredColumns() as $column) {
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$filterColumns[$column] = $column;
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}
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}
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if (! empty($filterColumns)) {
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foreach (SyncUtils::getRootVariables($filterColumns) as $column) {
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$usedColumns[$column] = $column;
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}
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}
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Benchmark::measure(sprintf('Done pre-processing columns for source %s', $source->source_name));
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$rows = $run->fetchRows($usedColumns);
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Benchmark::measure(sprintf('Fetched source %s', $source->source_name));
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$this->imported[$sourceId] = [];
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foreach ($rows as $row) {
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if ($combinedKey) {
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$key = SyncUtils::fillVariables($sourceKeyPattern, $row);
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if (array_key_exists($key, $this->imported[$sourceId])) {
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throw new InvalidArgumentException(sprintf(
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'Trying to import row "%s" (%s) twice: %s VS %s',
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$key,
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$sourceKeyPattern,
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json_encode($this->imported[$sourceId][$key]),
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json_encode($row)
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));
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}
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} else {
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if (! property_exists($row, $key)) {
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throw new InvalidArgumentException(sprintf(
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'There is no key column "%s" in this row from "%s": %s',
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$key,
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$source->source_name,
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json_encode($row)
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));
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}
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}
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if (! $this->rule->matches($row)) {
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continue;
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}
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if ($combinedKey) {
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$this->imported[$sourceId][$key] = $row;
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} else {
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$this->imported[$sourceId][$row->$key] = $row;
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}
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}
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unset($rows);
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}
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Benchmark::measure('Done loading imported data');
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return $this;
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}
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/**
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* TODO: This is rubbish, we need to filter at fetch time
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*/
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protected function removeForeignListEntries()
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{
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$listId = null;
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foreach ($this->syncProperties as $prop) {
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if ($prop->get('destination_field') === 'list_id') {
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$listId = (int) $prop->get('source_expression');
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}
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}
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if ($listId === null) {
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throw new InvalidArgumentException(
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'Cannot sync datalist entry without list_ist'
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);
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}
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$no = [];
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foreach ($this->objects as $k => $o) {
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if ((int) $o->get('list_id') !== (int) $listId) {
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$no[] = $k;
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}
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}
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foreach ($no as $k) {
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unset($this->objects[$k]);
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}
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}
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/**
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* @return $this
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*/
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protected function loadExistingObjects()
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{
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Benchmark::measure('Begin loading existing objects');
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$ruleObjectType = $this->rule->get('object_type');
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// TODO: Make object_type (template, object...) and object_name mandatory?
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if ($this->rule->hasCombinedKey()) {
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$this->objects = [];
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$destinationKeyPattern = $this->rule->getDestinationKeyPattern();
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foreach (IcingaObject::loadAllByType(
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$ruleObjectType,
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$this->db
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) as $object) {
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if ($object instanceof IcingaService) {
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if (strstr($destinationKeyPattern, '${host}')
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&& $object->get('host_id') === null
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) {
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continue;
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} elseif (strstr($destinationKeyPattern, '${service_set}')
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&& $object->get('service_set_id') === null
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) {
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continue;
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}
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}
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$key = SyncUtils::fillVariables(
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$destinationKeyPattern,
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$object
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);
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if (array_key_exists($key, $this->objects)) {
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throw new InvalidArgumentException(sprintf(
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'Combined destination key "%s" is not unique, got "%s" twice',
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$destinationKeyPattern,
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$key
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));
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}
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$this->objects[$key] = $object;
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}
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} else {
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$this->objects = IcingaObject::loadAllByType(
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$ruleObjectType,
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$this->db
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);
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}
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// TODO: should be obsoleted by a better "loadFiltered" method
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if ($ruleObjectType === 'datalistEntry') {
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$this->removeForeignListEntries();
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}
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Benchmark::measure('Done loading existing objects');
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return $this;
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}
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/**
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* @return array
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* @throws \Icinga\Exception\NotFoundError
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* @throws \Icinga\Module\Director\Exception\DuplicateKeyException
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*/
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protected function prepareNewObjects()
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{
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$objects = [];
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$ruleObjectType = $this->rule->get('object_type');
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foreach ($this->sources as $source) {
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$sourceId = $source->id;
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foreach ($this->imported[$sourceId] as $key => $row) {
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// Workaround: $a["10"] = "val"; -> array_keys($a) = [(int) 10]
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$key = (string) $key;
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if (! array_key_exists($key, $objects)) {
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// Safe default values for object_type and object_name
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if ($ruleObjectType === 'datalistEntry') {
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$props = [];
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} else {
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$props = [
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'object_type' => 'object',
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'object_name' => $key
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];
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}
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$objects[$key] = IcingaObject::createByType(
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$ruleObjectType,
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$props,
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$this->db
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);
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}
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$object = $objects[$key];
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$this->prepareNewObject($row, $object, $sourceId);
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}
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}
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return $objects;
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}
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/**
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* @param $row
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* @param DbObject $object
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* @param $sourceId
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* @throws \Icinga\Exception\NotFoundError
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* @throws \Icinga\Module\Director\Exception\DuplicateKeyException
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*/
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protected function prepareNewObject($row, DbObject $object, $sourceId)
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{
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foreach ($this->syncProperties as $propertyKey => $p) {
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if ($p->get('source_id') !== $sourceId) {
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continue;
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}
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if (! $this->rowMatchesPropertyFilter($row, $propertyKey)) {
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continue;
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}
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$prop = $p->get('destination_field');
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$val = SyncUtils::fillVariables($p->get('source_expression'), $row);
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if ($object instanceof IcingaObject) {
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if ($prop === 'import') {
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if ($val !== null) {
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$object->imports()->add($val);
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}
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} elseif ($prop === 'groups') {
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if ($val !== null) {
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$object->groups()->add($val);
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}
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} elseif (substr($prop, 0, 5) === 'vars.') {
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$varName = substr($prop, 5);
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if (substr($varName, -2) === '[]') {
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$varName = substr($varName, 0, -2);
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$current = $this->wantArray($object->vars()->$varName);
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$object->vars()->$varName = array_merge(
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$current,
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$this->wantArray($val)
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);
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} else {
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$object->vars()->$varName = $val;
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}
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} else {
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if ($val !== null) {
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$object->set($prop, $val);
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}
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}
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} else {
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if ($val !== null) {
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$object->set($prop, $val);
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}
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}
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}
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}
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|
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/**
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* @return $this
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*/
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protected function deferResolvers()
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{
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if (in_array($this->rule->get('object_type'), ['host', 'hostgroup'])) {
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$resolver = $this->getHostGroupMembershipResolver();
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$resolver->defer()->setUseTransactions(false);
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}
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return $this;
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}
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/**
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* @param DbObject $object
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* @return $this
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*/
|
|
protected function setResolver($object)
|
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{
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if (! ($object instanceof IcingaHost || $object instanceof IcingaHostGroup)) {
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return $this;
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}
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if ($resolver = $this->getHostGroupMembershipResolver()) {
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$object->setHostGroupMembershipResolver($resolver);
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}
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return $this;
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}
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/**
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* @return $this
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* @throws \Zend_Db_Adapter_Exception
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*/
|
|
protected function notifyResolvers()
|
|
{
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if ($resolver = $this->getHostGroupMembershipResolver()) {
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$resolver->refreshDb(true);
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}
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return $this;
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}
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|
|
|
/**
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* @return bool|HostGroupMembershipResolver
|
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*/
|
|
protected function getHostGroupMembershipResolver()
|
|
{
|
|
if ($this->hostGroupMembershipResolver === null) {
|
|
if (in_array(
|
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$this->rule->get('object_type'),
|
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['host', 'hostgroup']
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)) {
|
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$this->hostGroupMembershipResolver = new HostGroupMembershipResolver(
|
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$this->db
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);
|
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} else {
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$this->hostGroupMembershipResolver = false;
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}
|
|
}
|
|
|
|
return $this->hostGroupMembershipResolver;
|
|
}
|
|
|
|
/**
|
|
* Evaluates a SyncRule and returns a list of modified objects
|
|
*
|
|
* TODO: Split this into smaller methods
|
|
*
|
|
* @return DbObject|IcingaObject[] List of modified IcingaObjects
|
|
* @throws \Icinga\Exception\NotFoundError
|
|
* @throws \Icinga\Module\Director\Exception\DuplicateKeyException
|
|
*/
|
|
protected function prepare()
|
|
{
|
|
if ($this->isPrepared) {
|
|
return $this->objects;
|
|
}
|
|
|
|
$this->raiseLimits()
|
|
->startMeasurements()
|
|
->prepareCache()
|
|
->fetchSyncProperties()
|
|
->prepareRelatedImportSources()
|
|
->prepareSourceColumns()
|
|
->loadExistingObjects()
|
|
->fetchImportedData()
|
|
->deferResolvers();
|
|
|
|
Benchmark::measure('Begin preparing updated objects');
|
|
$newObjects = $this->prepareNewObjects();
|
|
|
|
Benchmark::measure('Ready to process objects');
|
|
/** @var DbObject|IcingaObject $object */
|
|
foreach ($newObjects as $key => $object) {
|
|
$this->processObject($key, $object);
|
|
}
|
|
|
|
Benchmark::measure('Modified objects are ready, applying purge strategy');
|
|
$noAction = [];
|
|
$purgeAction = $this->rule->get('purge_action');
|
|
foreach ($this->rule->purgeStrategy()->listObjectsToPurge() as $key) {
|
|
if (array_key_exists($key, $newObjects)) {
|
|
// Object has been touched, do not delete
|
|
continue;
|
|
}
|
|
|
|
if (array_key_exists($key, $this->objects)) {
|
|
$object = $this->objects[$key];
|
|
if (! $object->hasBeenModified()) {
|
|
switch ($purgeAction) {
|
|
case 'delete':
|
|
$object->markForRemoval();
|
|
break;
|
|
case 'disable':
|
|
$object->set('disabled', 'y');
|
|
break;
|
|
default:
|
|
throw new RuntimeException(
|
|
"Unsupported purge action: '$purgeAction'"
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Benchmark::measure('Done marking objects for purge');
|
|
|
|
foreach ($this->objects as $key => $object) {
|
|
if (! $object->hasBeenModified() && ! $object->shouldBeRemoved()) {
|
|
$noAction[] = $key;
|
|
}
|
|
}
|
|
|
|
foreach ($noAction as $key) {
|
|
unset($this->objects[$key]);
|
|
}
|
|
|
|
$this->isPrepared = true;
|
|
|
|
Benchmark::measure('Done preparing objects');
|
|
|
|
return $this->objects;
|
|
}
|
|
|
|
/**
|
|
* @param $key
|
|
* @param DbObject|IcingaObject $object
|
|
* @throws \Icinga\Exception\NotFoundError
|
|
*/
|
|
protected function processObject($key, $object)
|
|
{
|
|
if (array_key_exists($key, $this->objects)) {
|
|
$this->refreshObject($key, $object);
|
|
} else {
|
|
$this->addNewObject($key, $object);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param $key
|
|
* @param DbObject|IcingaObject $object
|
|
* @throws \Icinga\Exception\NotFoundError
|
|
*/
|
|
protected function refreshObject($key, $object)
|
|
{
|
|
$policy = $this->rule->get('update_policy');
|
|
|
|
switch ($policy) {
|
|
case 'override':
|
|
$this->objects[$key]->replaceWith($object);
|
|
break;
|
|
|
|
case 'merge':
|
|
case 'update-only':
|
|
// TODO: re-evaluate merge settings. vars.x instead of
|
|
// just "vars" might suffice.
|
|
$this->objects[$key]->merge($object, $this->replaceVars);
|
|
if (! $this->hasPropertyDisabled && $object->hasProperty('disabled')) {
|
|
$this->objects[$key]->resetProperty('disabled');
|
|
}
|
|
break;
|
|
|
|
default:
|
|
// policy 'ignore', no action
|
|
}
|
|
|
|
if ($policy === 'override' || $policy === 'merge') {
|
|
if ($object instanceof IcingaHost) {
|
|
$keyName = $this->serviceOverrideKeyName;
|
|
if (! $object->hasInitializedVars() || ! isset($object->vars()->$key)) {
|
|
$this->objects[$key]->vars()->restoreStoredVar($keyName);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param $key
|
|
* @param DbObject|IcingaObject $object
|
|
*/
|
|
protected function addNewObject($key, $object)
|
|
{
|
|
$this->objects[$key] = $object;
|
|
}
|
|
|
|
/**
|
|
* Runs a SyncRule and applies all resulting changes
|
|
* @return int
|
|
* @throws Exception
|
|
* @throws IcingaException
|
|
*/
|
|
public function apply()
|
|
{
|
|
Benchmark::measure('Begin applying objects');
|
|
|
|
$objects = $this->prepare();
|
|
$db = $this->db;
|
|
$dba = $db->getDbAdapter();
|
|
$dba->beginTransaction();
|
|
|
|
$object = null;
|
|
$updateOnly = $this->rule->get('update_policy') === 'update-only';
|
|
$allowCreate = ! $updateOnly;
|
|
|
|
try {
|
|
$formerActivityChecksum = hex2bin(
|
|
$db->getLastActivityChecksum()
|
|
);
|
|
$created = 0;
|
|
$modified = 0;
|
|
$deleted = 0;
|
|
// TODO: Count also failed ones, once we allow such
|
|
// $failed = 0;
|
|
foreach ($objects as $object) {
|
|
$this->setResolver($object);
|
|
if (! $updateOnly && $object->shouldBeRemoved()) {
|
|
$object->delete();
|
|
$deleted++;
|
|
continue;
|
|
}
|
|
|
|
if ($object->hasBeenModified()) {
|
|
$existing = $object->hasBeenLoadedFromDb();
|
|
if ($existing) {
|
|
$object->store($db);
|
|
$modified++;
|
|
} elseif ($allowCreate) {
|
|
$object->store($db);
|
|
$created++;
|
|
}
|
|
}
|
|
}
|
|
|
|
$runProperties = [
|
|
'objects_created' => $created,
|
|
'objects_deleted' => $deleted,
|
|
'objects_modified' => $modified,
|
|
];
|
|
|
|
if ($created + $deleted + $modified > 0) {
|
|
// TODO: What if this has been the very first activity?
|
|
$runProperties['last_former_activity'] = $db->quoteBinary($formerActivityChecksum);
|
|
$runProperties['last_related_activity'] = $db->quoteBinary(hex2bin(
|
|
$db->getLastActivityChecksum()
|
|
));
|
|
}
|
|
|
|
$this->run->setProperties($runProperties)->store();
|
|
$this->notifyResolvers();
|
|
$dba->commit();
|
|
|
|
// Store duration after commit, as the commit might take some time
|
|
$this->run->set('duration_ms', (int) round(
|
|
(microtime(true) - $this->runStartTime) * 1000
|
|
))->store();
|
|
|
|
Benchmark::measure('Done applying objects');
|
|
} catch (Exception $e) {
|
|
$dba->rollBack();
|
|
|
|
if ($object !== null && $object instanceof IcingaObject) {
|
|
throw new IcingaException(
|
|
'Exception while syncing %s %s: %s',
|
|
get_class($object),
|
|
$object->get('object_name'),
|
|
$e->getMessage(),
|
|
$e
|
|
);
|
|
} else {
|
|
throw $e;
|
|
}
|
|
}
|
|
|
|
return $this->run->get('id');
|
|
}
|
|
|
|
protected function prepareCache()
|
|
{
|
|
PrefetchCache::initialize($this->db);
|
|
IcingaTemplateRepository::clear();
|
|
|
|
$ruleObjectType = $this->rule->get('object_type');
|
|
|
|
$dummy = IcingaObject::createByType($ruleObjectType);
|
|
if ($dummy instanceof IcingaObject) {
|
|
IcingaObject::prefetchAllRelationsByType($ruleObjectType, $this->db);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
}
|