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<?php |
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namespace SamAsEnd\QueryDiagnosis; |
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use Illuminate\Database\Events\QueryExecuted; |
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use Illuminate\Support\Collection; |
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use Illuminate\Support\Facades\DB; |
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use Illuminate\Support\Str; |
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use SamAsEnd\QueryDiagnosis\Enums\JoinType; |
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use SamAsEnd\QueryDiagnosis\Exceptions\UnsupportedDatabaseDriverException; |
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use SamAsEnd\QueryDiagnosis\Strategies\JoinTypeQueryDiagnosis; |
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use SamAsEnd\QueryDiagnosis\Strategies\QueryDiagnosisContract; |
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use SamAsEnd\QueryDiagnosis\Strategies\SelectTypeContainsQueryDiagnosis; |
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class QueryDiagnosisImpl |
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{ |
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private const SELECT = 'select '; |
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private const EXPLAIN = 'explain '; |
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private const UNION = 'UNION'; |
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protected readonly Collection $queryDiagnoses; |
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protected readonly Collection $queriesCache; |
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protected bool $booted = false; |
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public function __construct() |
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{ |
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$this->queryDiagnoses = Collection::make(); |
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$this->queriesCache = Collection::make(); |
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$this->booted = false; |
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} |
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public function preventUnionSelectTypes(): void |
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{ |
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$this->customQueryDiagnosis(new SelectTypeContainsQueryDiagnosis(self::UNION)); |
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} |
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public function preventFullDatabaseScanQueries(): void |
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{ |
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$this->customQueryDiagnosis(new JoinTypeQueryDiagnosis(JoinType::ALL)); |
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} |
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public function preventFullIndexScanQueries(): void |
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{ |
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$this->customQueryDiagnosis(new JoinTypeQueryDiagnosis(JoinType::INDEX)); |
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} |
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public function customQueryDiagnosis(QueryDiagnosisContract $queryDiagnosis): void |
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{ |
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$this->boot(); |
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$this->queryDiagnoses->push($queryDiagnosis); |
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} |
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protected function boot(): void |
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{ |
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if (! $this->booted) { |
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$this->booted = true; |
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DB::listen(function (QueryExecuted $executedQuery) { |
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$query = Str::of($executedQuery->sql) |
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->lower() |
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->trim('()') // laravel sometime group the queries as (select...) |
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->trim() |
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->value(); |
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if (static::shouldBeDiagnosed($query)) { |
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$this->queriesCache->push($query); |
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static::diagnoseQuery($executedQuery); |
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} |
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}); |
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} |
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} |
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protected function shouldBeDiagnosed(string $query): bool |
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{ |
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return Str::startsWith($query, static::SELECT) |
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&& $this->queriesCache->doesntContain($query); |
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} |
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protected function diagnoseQuery(QueryExecuted $queryExecuted): void |
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{ |
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if ('mysql' !== ($driver = $queryExecuted->connection->getDriverName())) { |
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throw new UnsupportedDatabaseDriverException($driver); |
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} |
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$explainResults = collect($queryExecuted->connection->select( |
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self::EXPLAIN.$queryExecuted->sql, |
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$queryExecuted->bindings |
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)); |
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/** @var QueryDiagnosisContract $queryDiagnosis */ |
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foreach ($this->queryDiagnoses as $queryDiagnosis) { |
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if ($queryDiagnosis->match($queryExecuted, $explainResults)) { |
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$queryDiagnosis->report($queryExecuted, $explainResults); |
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} |
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} |
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} |
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} |
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SamAsEnd /
laravel-query-diagnosis
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