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			373 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			373 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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namespace App\Models;
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use App\Exceptions\Service\HasActiveServersException;
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use App\Repositories\Daemon\DaemonConfigurationRepository;
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use Exception;
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use Illuminate\Support\Facades\Http;
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use Illuminate\Support\Str;
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use Symfony\Component\Yaml\Yaml;
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use Illuminate\Notifications\Notifiable;
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use Illuminate\Database\Eloquent\Relations\HasMany;
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use Illuminate\Database\Eloquent\Relations\HasManyThrough;
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/**
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 * @property int $id
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 * @property string $uuid
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 * @property bool $public
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 * @property string $name
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 * @property string|null $description
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 * @property string $fqdn
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 * @property string $scheme
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 * @property bool $behind_proxy
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 * @property bool $maintenance_mode
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 * @property int $memory
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 * @property int $memory_overallocate
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 * @property int $disk
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 * @property int $disk_overallocate
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 * @property int $cpu
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 * @property int $cpu_overallocate
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 * @property int $upload_size
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 * @property string $daemon_token_id
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 * @property string $daemon_token
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 * @property int $daemon_listen
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 * @property int $daemon_sftp
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 * @property string $daemon_base
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 * @property \Carbon\Carbon $created_at
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 * @property \Carbon\Carbon $updated_at
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 * @property \App\Models\Mount[]|\Illuminate\Database\Eloquent\Collection $mounts
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 * @property \App\Models\Server[]|\Illuminate\Database\Eloquent\Collection $servers
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 * @property \App\Models\Allocation[]|\Illuminate\Database\Eloquent\Collection $allocations
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 */
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class Node extends Model
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{
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    use Notifiable;
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    /**
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     * The resource name for this model when it is transformed into an
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     * API representation using fractal.
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     */
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    public const RESOURCE_NAME = 'node';
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    public const DAEMON_TOKEN_ID_LENGTH = 16;
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    public const DAEMON_TOKEN_LENGTH = 64;
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    /**
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     * The table associated with the model.
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     */
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    protected $table = 'nodes';
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    /**
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     * The attributes excluded from the model's JSON form.
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     */
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    protected $hidden = ['daemon_token_id', 'daemon_token'];
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    /**
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     * Fields that are mass assignable.
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     */
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    protected $fillable = [
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        'public', 'name',
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        'fqdn', 'scheme', 'behind_proxy',
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        'memory', 'memory_overallocate', 'disk',
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        'disk_overallocate', 'cpu', 'cpu_overallocate',
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        'upload_size', 'daemon_base',
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        'daemon_sftp', 'daemon_listen',
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        'description', 'maintenance_mode',
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    ];
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    public static array $validationRules = [
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        'name' => 'required|regex:/^([\w .-]{1,100})$/',
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        'description' => 'string|nullable',
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        'public' => 'boolean',
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        'fqdn' => 'required|string',
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        'scheme' => 'required',
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        'behind_proxy' => 'boolean',
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        'memory' => 'required|numeric|min:0',
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        'memory_overallocate' => 'required|numeric|min:-1',
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        'disk' => 'required|numeric|min:0',
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        'disk_overallocate' => 'required|numeric|min:-1',
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        'cpu' => 'required|numeric|min:0',
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        'cpu_overallocate' => 'required|numeric|min:-1',
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        'daemon_base' => 'sometimes|required|regex:/^([\/][\d\w.\-\/]+)$/',
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        'daemon_sftp' => 'required|numeric|between:1,65535',
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        'daemon_listen' => 'required|numeric|between:1,65535',
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        'maintenance_mode' => 'boolean',
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        'upload_size' => 'int|between:1,1024',
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    ];
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    /**
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     * Default values for specific columns that are generally not changed on base installs.
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     */
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    protected $attributes = [
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        'public' => true,
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        'behind_proxy' => false,
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        'memory' => 0,
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        'memory_overallocate' => 0,
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        'disk' => 0,
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        'disk_overallocate' => 0,
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        'cpu' => 0,
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        'cpu_overallocate' => 0,
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        'daemon_base' => '/var/lib/pelican/volumes',
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        'daemon_sftp' => 2022,
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        'daemon_listen' => 8080,
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        'maintenance_mode' => false,
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        'tags' => '[]',
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    ];
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    protected function casts(): array
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    {
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        return [
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            'memory' => 'integer',
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            'disk' => 'integer',
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            'cpu' => 'integer',
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            'daemon_listen' => 'integer',
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            'daemon_sftp' => 'integer',
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            'daemon_token' => 'encrypted',
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            'behind_proxy' => 'boolean',
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            'public' => 'boolean',
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            'maintenance_mode' => 'boolean',
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            'tags' => 'array',
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        ];
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    }
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    public function getRouteKeyName(): string
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    {
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        return 'id';
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    }
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    protected static function booted(): void
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    {
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        static::creating(function (self $node) {
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            $node->uuid = Str::uuid();
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            $node->daemon_token = Str::random(self::DAEMON_TOKEN_LENGTH);
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            $node->daemon_token_id = Str::random(self::DAEMON_TOKEN_ID_LENGTH);
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            return true;
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        });
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        static::deleting(function (self $node) {
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            throw_if($node->servers()->count(), new HasActiveServersException(trans('exceptions.egg.delete_has_servers')));
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        });
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    }
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    /**
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     * Get the connection address to use when making calls to this node.
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     */
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    public function getConnectionAddress(): string
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    {
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        return "$this->scheme://$this->fqdn:$this->daemon_listen";
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    }
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    /**
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     * Returns the configuration as an array.
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     */
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    public function getConfiguration(): array
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    {
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        return [
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            'debug' => false,
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            'uuid' => $this->uuid,
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            'token_id' => $this->daemon_token_id,
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            'token' => $this->daemon_token,
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            'api' => [
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                'host' => '0.0.0.0',
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                'port' => $this->daemon_listen,
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                'ssl' => [
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                    'enabled' => (!$this->behind_proxy && $this->scheme === 'https'),
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                    'cert' => '/etc/letsencrypt/live/' . Str::lower($this->fqdn) . '/fullchain.pem',
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                    'key' => '/etc/letsencrypt/live/' . Str::lower($this->fqdn) . '/privkey.pem',
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                ],
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                'upload_limit' => $this->upload_size,
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            ],
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            'system' => [
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                'data' => $this->daemon_base,
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                'sftp' => [
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                    'bind_port' => $this->daemon_sftp,
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                ],
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            ],
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            'allowed_mounts' => $this->mounts->pluck('source')->toArray(),
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            'remote' => route('index'),
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        ];
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    }
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    /**
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     * Returns the configuration in Yaml format.
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     */
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    public function getYamlConfiguration(): string
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    {
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        return Yaml::dump($this->getConfiguration(), 4, 2, Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
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    }
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    /**
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     * Returns the configuration in JSON format.
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     */
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    public function getJsonConfiguration(bool $pretty = false): string
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    {
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        return json_encode($this->getConfiguration(), $pretty ? JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT : JSON_UNESCAPED_SLASHES);
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    }
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    public function isUnderMaintenance(): bool
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    {
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        return $this->maintenance_mode;
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    }
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    public function mounts(): HasManyThrough
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    {
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        return $this->hasManyThrough(Mount::class, MountNode::class, 'node_id', 'id', 'id', 'mount_id');
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    }
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    /**
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     * Gets the servers associated with a node.
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     */
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    public function servers(): HasMany
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    {
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        return $this->hasMany(Server::class);
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    }
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    /**
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     * Gets the allocations associated with a node.
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     */
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    public function allocations(): HasMany
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    {
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        return $this->hasMany(Allocation::class);
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    }
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    /**
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     * Returns a boolean if the node is viable for an additional server to be placed on it.
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     */
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    public function isViable(int $memory, int $disk, int $cpu): bool
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    {
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        if ($this->memory_overallocate >= 0) {
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            $memoryLimit = $this->memory * (1 + ($this->memory_overallocate / 100));
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            if ($this->servers_sum_memory + $memory > $memoryLimit) {
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                return false;
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            }
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        }
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        if ($this->disk_overallocate >= 0) {
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            $diskLimit = $this->disk * (1 + ($this->disk_overallocate / 100));
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            if ($this->servers_sum_disk + $disk > $diskLimit) {
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                return false;
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            }
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        }
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        if ($this->cpu_overallocate >= 0) {
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            $cpuLimit = $this->cpu * (1 + ($this->cpu_overallocate / 100));
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            if ($this->servers_sum_cpu + $cpu > $cpuLimit) {
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                return false;
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            }
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        }
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        return true;
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    }
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    public static function getForServerCreation()
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    {
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        return self::with('allocations')->get()->map(function (Node $item) {
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            $filtered = $item->getRelation('allocations')->where('server_id', null)->map(function ($map) {
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                return collect($map)->only(['id', 'ip', 'port']);
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            });
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            $ports = $filtered->map(function ($map) {
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                return [
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                    'id' => $map['id'],
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                    'text' => sprintf('%s:%s', $map['ip'], $map['port']),
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                ];
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            })->values();
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            return [
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                'id' => $item->id,
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                'text' => $item->name,
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                'allocations' => $ports,
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            ];
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        })->values();
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    }
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    public function systemInformation(): array
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    {
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        return once(function () {
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            try {
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                return resolve(DaemonConfigurationRepository::class)
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                    ->setNode($this)
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                    ->getSystemInformation(connectTimeout: 3);
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            } catch (Exception $exception) {
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                $message = str($exception->getMessage());
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                if ($message->startsWith('cURL error 6: Could not resolve host')) {
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                    $message = str('Could not resolve host');
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                }
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                if ($message->startsWith('cURL error 28: Failed to connect to ')) {
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                    $message = $message->after('cURL error 28: ')->before(' after ');
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                }
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                return ['exception' => $message->toString()];
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            }
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        });
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    }
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    public function serverStatuses(): array
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    {
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        $statuses = [];
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        try {
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            $statuses = Http::daemon($this)->connectTimeout(1)->timeout(1)->get('/api/servers')->json() ?? [];
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        } catch (Exception $exception) {
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            report($exception);
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        }
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        foreach ($statuses as $status) {
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            $uuid = fluent($status)->get('configuration.uuid');
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            cache()->remember("servers.$uuid.container.status", now()->addMinute(), fn () => fluent($status)->get('state'));
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        }
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        return $statuses;
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    }
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    public function statistics()
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    {
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        $default = [
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            'memory_total' => 0,
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            'memory_used' => 0,
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            'swap_total' => 0,
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            'swap_used' => 0,
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            'load_average1' => 0.00,
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            'load_average5' => 0.00,
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            'load_average15' => 0.00,
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            'cpu_percent' => 0.00,
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            'disk_total' => 0,
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            'disk_used' => 0,
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        ];
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        try {
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            return Http::daemon($this)
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                ->connectTimeout(1)
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                ->timeout(1)
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                ->get('/api/system/utilization')
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                ->json() ?? $default;
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        } catch (Exception) {
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            return $default;
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        }
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    }
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    public function ipAddresses(): array
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    {
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        return cache()->remember("nodes.$this->id.ips", now()->addHour(), function () {
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            $ips = collect();
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            if (is_ip($this->fqdn)) {
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                $ips = $ips->push($this->fqdn);
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            } elseif ($dnsRecords = gethostbynamel($this->fqdn)) {
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                $ips = $ips->concat($dnsRecords);
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            }
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            try {
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                $addresses = Http::daemon($this)->connectTimeout(1)->timeout(1)->get('/api/system/ips')->json();
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                $ips = $ips->concat(fluent($addresses)->get('ip_addresses'));
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            } catch (Exception) {
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                // pass
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            }
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            return $ips->all();
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        });
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    }
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}
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