Added explain analyze query plan to recommendation prompt

config/slower.php

@@ -13,10 +13,13 @@
     ],
     'ai_recommendation' => env('SLOWER_AI_RECOMMENDATION', true),
     'recommendation_model' => env('SLOWER_AI_RECOMMENDATION_MODEL', 'gpt-4'),
+    'recommendation_use_explain' => env('SLOWER_AI_RECOMMENDATION_USE_EXPLAIN', true),
+    'ignore_explain_queries' => env('SLOWER_IGNORE_EXPLAIN_QUERIES', true),
+    'ignore_insert_queries' => env('SLOWER_IGNORE_INSERT_QUERIES', true),
     'open_ai' => [
         'api_key' => env('OPENAI_API_KEY'),
         'organization' => env('OPENAI_ORGANIZATION'),
         'request_timeout' => env('OPENAI_TIMEOUT'),
     ],
-    'prompt' => env('SLOWER_PROMPT', 'As a distinguished database optimization expert, your expertise is invaluable for refining SQL queries to achieve maximum efficiency. Please examine the SQL statement provided below. Based on your analysis, could you recommend sophisticated indexing techniques or query modifications that could significantly improve performance and scalability?'),
+    'prompt' => env('SLOWER_PROMPT', 'As a distinguished database optimization expert, your expertise is invaluable for refining SQL queries to achieve maximum efficiency. Schema json provide list of indexes and column definitions for each table in query. Also analyse the output of EXPLAIN ANALYSE and provide recommendations to optimize query. Please examine the SQL statement provided below including EXPLAIN ANALYSE query plan. Based on your analysis, could you recommend sophisticated indexing techniques or query modifications that could significantly improve performance and scalability?'),
 ];

src/Services/RecommendationService.php

@@ -14,20 +14,24 @@ public function __construct(protected Client $client)
 
     public function getRecommendation($record): ?string
     {
+        $schema = $this->extractIndexesAndSchemaFromRecord($record);
+        $userMessage = 'The query execution took ' . $record->time . ' milliseconds.' . PHP_EOL .
+            'Connection: ' . $record->connection . PHP_EOL .
+            'Connection Name: ' . $record->connection_name . PHP_EOL .
+            'Schema: ' . json_encode($schema, JSON_PRETTY_PRINT) . PHP_EOL .
+            'Sql: ' . $record->sql . PHP_EOL;
 
-        [$indexes, $schema] = $this->extractIndexesAndSchemaFromRecord($record);
+        if (config('slower.recommendation_use_explain', false)) {
+            $plan = collect(DB::select('explain analyse ' . $record->raw_sql))->implode('QUERY PLAN', PHP_EOL);
+
+            $userMessage .= 'EXPLAIN ANALYSE output: ' . $plan . PHP_EOL;
+        }
 
         $result = $this->client->chat()->create([
             'model' => config('slower.recommendation_model', 'gpt-4'),
             'messages' => [
                 ['role' => 'system', 'content' => config('slower.prompt')],
-                ['role' => 'user', 'content' => 'The query execution took '.$record->time.' milliseconds.'.PHP_EOL.
-                    'Connection: '.$record->connection.PHP_EOL.
-                    'Current Indexes: '.json_encode($indexes, JSON_PRETTY_PRINT).PHP_EOL.
-                    'Schema: '.json_encode($schema, JSON_PRETTY_PRINT).PHP_EOL.
-                    'Connection Name: '.$record->connection_name.PHP_EOL.
-                    'Sql: '.$record->raw_sql,
-                ],
+                ['role' => 'user', 'content' => $userMessage],
             ],
         ]);
 
@@ -43,18 +47,36 @@ public function getRecommendation($record): ?string
 
     private function extractIndexesAndSchemaFromRecord($record): array
     {
-        $schemaBuilder = DB::connection($record->getConnectionName())->getSchemaBuilder();
+        $schemaBuilder = DB::connection($record->connection_name)->getSchemaBuilder();
 
-        $columns = $schemaBuilder->getColumnListing($record->getTable());
+        $schema = [];
 
-        $indexes = $schemaBuilder->getIndexes($record->getTable());
+        $tables = $this->getTableNamesFromRawQuery($record->raw_sql);
+        foreach ($tables as $tableName) {
+            $columns = $schemaBuilder->getColumnListing($tableName);
+            $schema[$tableName]['indexes'] = $schemaBuilder->getIndexes($tableName);
 
-        $schema = [];
+            foreach ($columns as $column) {
+                $schema[$tableName]['columns'][] = [$column => $schemaBuilder->getColumnType($tableName, $column)];
+            }
+        }
+
+        return $schema;
+    }
+
+    private function getTableNamesFromRawQuery(string $sqlQuery): array
+    {
+        // Regular expression to match table names
+        $pattern = '/(?:FROM|JOIN|INTO|UPDATE)\s+(\S+)(?:\s+(?:AS\s+)?\w+)?(?:\s+ON\s+[^ ]+)?/i';
+
+        preg_match_all($pattern, $sqlQuery, $matches);
 
-        foreach ($columns as $column) {
-            $schema[$column] = $schemaBuilder->getColumnType($record->getTable(), $column);
+        // Extract table names from the matches
+        $tableNames = [];
+        foreach ($matches[1] as $tableName) {
+            $tableNames[] = str_replace(['`', '"'], '', $tableName);
         }
 
-        return [$indexes, $schema];
+        return array_unique($tableNames);
     }
 }

src/SlowerServiceProvider.php

@@ -59,9 +59,21 @@ public function packageRegistered(): void
     private function registerDatabaseListener(): void
     {
         if (config('slower.enabled')) {
-            DB::whenQueryingForLongerThan(config('slower.threshold', 10000), function (Connection $connection, QueryExecuted $event) {
-                $this->createRecord($event, $connection);
-                $this->notify($event, $connection);
+            DB::listen(function (QueryExecuted $event) {
+                if($event->time < config('slower.threshold', 10000)) {
+                    return;
+                }
+
+                if(config('slower.ignore_explain_queries', true) && Str::startsWith($event->sql, 'EXPLAIN')) {
+                    return;
+                }
+
+                if(config('slower.ignore_insert_queries', true) && stripos($event->sql, 'insert') === 0) {
+                    return;
+                }
+
+                $this->createRecord($event, $event->connection);
+                $this->notify($event, $event->connection);
             });
         }
     }