chore: import upstream snapshot with attribution

2026-07-13 13:32:57 +08:00
commit cd420f9332
4811 changed files with 884702 additions and 0 deletions
@@ -0,0 +1,65 @@
+import { env } from "~/env.server";
+import { logger } from "~/services/logger.server";
+
+export interface QueryPerformanceConfig {
+  verySlowQueryThreshold?: number; // ms
+  maxQueryLogLength: number;
+}
+
+export class QueryPerformanceMonitor {
+  private config: QueryPerformanceConfig;
+
+  constructor(config: Partial<QueryPerformanceConfig> = {}) {
+    this.config = {
+      maxQueryLogLength: 1000,
+      ...config,
+    };
+  }
+
+  onQuery(
+    clientType: "writer" | "replica",
+    log: {
+      duration: number;
+      query: string;
+      params: string;
+      target: string;
+      timestamp: Date;
+    }
+  ) {
+    if (this.config.verySlowQueryThreshold === undefined) {
+      return;
+    }
+
+    const { duration, query, params, target, timestamp } = log;
+
+    // Slow queries are an observability signal (DB load, missing indexes,
+    // etc.), not an application error. Logged at warn so it lands in stdout
+    // without flowing to Sentry — track via metrics/dashboards instead.
+    if (duration > this.config.verySlowQueryThreshold) {
+      const truncatedQuery =
+        query.length > this.config.maxQueryLogLength
+          ? query.substring(0, this.config.maxQueryLogLength) + "..."
+          : query;
+
+      logger.warn("Prisma: very slow database query", {
+        clientType,
+        durationMs: duration,
+        query: truncatedQuery,
+        target,
+        timestamp,
+        paramCount: this.countParams(query),
+        hasParams: params !== "[]" && params !== "",
+      });
+    }
+  }
+
+  private countParams(query: string): number {
+    // Count the number of $1, $2, etc. parameters in the query
+    const paramMatches = query.match(/\$\d+/g);
+    return paramMatches ? paramMatches.length : 0;
+  }
+}
+
+export const queryPerformanceMonitor = new QueryPerformanceMonitor({
+  verySlowQueryThreshold: env.VERY_SLOW_QUERY_THRESHOLD_MS,
+});