93 lines
3.0 KiB
PHP
93 lines
3.0 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Services\VirtualMachine;
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use App\Models\IpPool;
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use App\Models\ModuleIpAddress;
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use Illuminate\Support\Facades\DB;
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use Illuminate\Support\Facades\Log;
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/**
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* Reserves and releases IPs from ip_pools / module_ip_addresses with row-level locking.
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*
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* Extracted so CreateVirtualMachineJob can pick an IP BEFORE cloning the VM
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* (the IP is baked into the VM name), and AssignIpToGuestJob can later use
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* the same reservation instead of picking its own.
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*/
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class VmIpReservationService
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{
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/**
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* @return array{reservation:ModuleIpAddress,ip_pool_id:int,gateway:string,cidr:int}|null
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*/
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public function reserve(int $networkId, int $hostId, string $dns): ?array
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{
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return DB::transaction(function () use ($networkId, $hostId, $dns) {
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$usedIps = ModuleIpAddress::where('module_network_id', $networkId)
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->lockForUpdate()
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->pluck('ip')
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->toArray();
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$ipPool = IpPool::where('module_network_id', $networkId)
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->where('status', 'free')
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->whereNotNull('gateway')
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->where('gateway', '!=', '')
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->whereNotIn('ip_address', $usedIps)
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->lockForUpdate()
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->inRandomOrder()
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->first();
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if (!$ipPool) {
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return null;
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}
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$ipPool->update(['status' => 'reserved']);
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$cidr = (int) ($ipPool->cidr ?: 24);
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$gateway = (string) ($ipPool->gateway ?? '');
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$netmask = $this->cidrToNetmask($cidr);
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$reservation = ModuleIpAddress::create([
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'vm_name' => '__pending__',
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'module_host_id' => $hostId,
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'module_network_id' => $networkId,
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'ip' => $ipPool->ip_address,
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'gateway' => $gateway,
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'netmask' => $netmask,
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'dns' => $dns,
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'status' => 0,
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]);
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return [
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'reservation' => $reservation,
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'ip_pool_id' => $ipPool->id,
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'gateway' => $gateway,
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'cidr' => $cidr,
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];
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});
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}
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public function release(ModuleIpAddress $reservation, ?int $ipPoolId): void
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{
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try {
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$reservation->delete();
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if ($ipPoolId) {
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IpPool::where('id', $ipPoolId)->update(['status' => 'free']);
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}
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Log::info('VmIpReservationService: IP released', ['ip' => $reservation->ip]);
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} catch (\Throwable $e) {
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Log::warning('VmIpReservationService: release failed', [
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'ip' => $reservation->ip,
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'error' => $e->getMessage(),
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]);
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}
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}
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public function cidrToNetmask(int $cidr): string
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{
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$cidr = max(0, min(32, $cidr));
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return long2ip(-1 << (32 - $cidr));
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}
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}
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