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6134d9c153
* prefetch devices in group to avoid cost of subquery As proposed in https://community.librenms.org/t/librenms-getting-slow-and-eventlog-widget-gets-canceled-or-504/22270/4?u=slalomsk8er * remove unnecessary implode & explode * replace whereIn with whereIntegerInRaw This is needed as whereIn has a default limit of 1000.
74 lines
2.2 KiB
PHP
74 lines
2.2 KiB
PHP
<?php
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/**
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* DeviceRelatedModel.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 <https://www.gnu.org/licenses/>.
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*
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* @link https://www.librenms.org
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*
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* @copyright 2019 Tony Murray
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* @author Tony Murray <murraytony@gmail.com>
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*/
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namespace App\Models;
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use App\Facades\DeviceCache;
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use Illuminate\Database\Eloquent\Relations\BelongsTo;
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class DeviceRelatedModel extends BaseModel
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{
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// ---- Query Scopes ----
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public function scopeHasAccess($query, User $user)
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{
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return $this->hasDeviceAccess($query, $user);
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}
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public function scopeInDeviceGroup($query, $deviceGroup)
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{
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// Build the list of device IDs in SQL
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$deviceIdsSubquery = \DB::table('device_group_device')
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->where('device_group_id', $deviceGroup)
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->pluck('device_id');
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// Use the result in the whereIn clause to avoid unoptimized subqueries
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// use whereIntegerInRaw to avoid a the defautl limit of 1000 for whereIn
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return $query->whereIntegerInRaw($query->qualifyColumn('device_id'), $deviceIdsSubquery);
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}
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// ---- Define Relationships ----
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public function device(): BelongsTo
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{
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return $this->belongsTo(\App\Models\Device::class, 'device_id', 'device_id');
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}
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// ---- Accessors/Mutators ----
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/**
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* Use cached device instance to load device relationships
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*/
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public function getDeviceAttribute(): ?Device
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{
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if (! $this->relationLoaded('device')) {
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$device = DeviceCache::get($this->device_id);
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$this->setRelation('device', $device->exists ? $device : null);
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}
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return $this->getRelationValue('device');
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}
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}
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