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<?php |
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/** |
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* QueryBuilderFilter.php |
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* |
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* -Description- |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* @package LibreNMS |
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* @link http://librenms.org |
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* @copyright 2016 Tony Murray |
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* @author Tony Murray <[email protected]> |
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*/ |
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namespace app; |
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use Cache; |
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use DB; |
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use Settings; |
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class QueryBuilderFilter |
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{ |
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public static function getAlertFilter() |
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{ |
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return json_encode(self::generateMacroFilter('alert.macros.rule', self::generateTableFilter())); |
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} |
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private static function generateMacroFilter($setting, $filter = []) |
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{ |
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foreach (Settings::get($setting, []) as $key => $value) { |
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$filter[] = [ |
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'id' => 'macros.'.$key, |
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'type' => 'integer', |
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'input' => 'radio', |
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'values' => ['1' => 'Yes', '0' => 'No'], |
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'operators' => ['equal'], |
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]; |
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} |
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return $filter; |
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} |
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private static function generateTableFilter($filter = []) |
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{ |
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// check if the database schema has changed |
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$db = DB::table('migrations')->pluck('migration'); |
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$cached = Cache::get('migrations_list', []); |
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if ($db != $cached) { |
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Cache::forget('query_builder_table_filter'); |
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Cache::forever('migrations_list', $db); |
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} |
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// return the table filter merged with $filter, fetch from cache if available |
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return array_merge($filter, Cache::rememberForever('query_builder_table_filter', function() { |
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$tableFilter = []; |
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$schema = DB::getDoctrineSchemaManager(); |
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// Doctrine DBAL has issues with enums, pretend they are strings |
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$schema->getDatabasePlatform()->registerDoctrineTypeMapping('enum', 'string'); |
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$tables = $schema->listTables(); |
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foreach ($tables as $table) { |
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$columns = $schema->listTableColumns($table->getName()); |
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$tableName = $table->getName(); |
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// only allow tables with a direct association to device_id |
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if (!$table->hasColumn('device_id')) { |
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continue; |
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} |
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foreach ($columns as $column) { |
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$columnName = $column->getName(); |
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// ignore device id columns, except in the devices table |
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if ($columnName == 'device_id' && $tableName != 'devices') { |
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continue; |
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} |
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$columnType = self::getColumnType($column->getType()->getName()); |
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// ignore unsupported types (such as binary and blob) |
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if (is_null($columnType)) { |
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continue; |
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} |
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$tableFilter[] = [ |
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'id' => $tableName.'.'.$columnName, |
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'type' => $columnType, |
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]; |
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} |
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} |
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return $tableFilter; |
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})); |
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} |
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private static function getColumnType($type) |
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{ |
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switch ($type) { |
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case 'text': |
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// return 'textarea'; |
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case 'string': |
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return 'string'; |
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case 'integer': |
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case 'smallint': |
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case 'bigint': |
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return 'integer'; |
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case 'double': |
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case 'float': |
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case 'decimal': |
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return 'double'; |
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case 'date': |
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return 'date'; |
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case 'time': |
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return 'time'; |
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case 'datetime': |
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return 'datetime'; |
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case 'boolean': |
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return 'boolean'; |
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} |
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// binary, blob |
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return null; |
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} |
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public static function getGroupFilter() |
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{ |
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return json_encode(self::generateMacroFilter('alert.macros.group', self::generateTableFilter())); |
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} |
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} |
librenms /
librenmsv2
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: