fix(pg-instrumentation): capture query props when passed as class instance

packages/instrumentation-pg/src/instrumentation.ts

@@ -341,6 +341,8 @@ export class PgInstrumentation extends InstrumentationBase<PgInstrumentationConf
           : firstArgIsQueryObjectWithText
             ? {
                 ...(arg0 as any),
+                name: arg0.name,
+                text: arg0.text,
                 values:
                   (arg0 as any).values ??
                   (Array.isArray(args[1]) ? args[1] : undefined),

packages/instrumentation-pg/test/pg.test.ts

@@ -634,6 +634,40 @@ describe('pg', () => {
           assert.strictEqual(resNoPromise, undefined);
         });
       });
+
+      it('should record class-instance query', done => {
+        class Statement {
+          get name() {
+            return 'get_pg_tables';
+          }
+          get text() {
+            return 'SELECT * FROM pg_tables WHERE schemaname = $1';
+          }
+        }
+        const queryConfig = new Statement();
+        const values = ['public'];
+
+        const expectedAttributes = {
+          ...DEFAULT_ATTRIBUTES,
+          [ATTR_DB_STATEMENT]: queryConfig.text,
+          [AttributeNames.PG_PLAN]: queryConfig.name,
+          [AttributeNames.PG_VALUES]: values,
+        };
+
+        const span = tracer.startSpan('test span');
+        context.with(trace.setSpan(context.active(), span), () => {
+          (client.query as any)(
+            queryConfig,
+            values,
+            (err: Error | null, res: any) => {
+              assert.strictEqual(err, null);
+              assert.ok(res);
+              runCallbackTest(span, expectedAttributes, events);
+              done();
+            }
+          );
+        });
+      });
     });
 
     describe('when specifying a requestHook configuration', () => {