ensure provided tags are reported for fetchExists (#6643)

The default implementation will result in the `time` method being called twice which has the effect of losing the provided tags and no metrics being recorded. This fixes it by overriding the method to avoid timing the internal query used.

Resolves gh-6583

Signed-off-by: heechann <[email protected]>

Author: HeeChanN

micrometer-core/src/main/java/io/micrometer/core/instrument/binder/db/MetricsDSLContext.java

@@ -790,4 +790,9 @@ public <R extends Record> UpdateSetFirstStep<R> update(Table<R> table) {
         return timeCoercable(super.update(table));
     }
 
+    @Override
+    public boolean fetchExists(Table<?> table, Condition condition) {
+        return super.fetchExists(super.selectOne().from(table).where(condition));
+    }
+
 }

micrometer-core/src/test/java/io/micrometer/core/instrument/binder/db/MetricsDSLContextTest.java

@@ -173,6 +173,23 @@ void timeTwoStatementsCreatedBeforeEitherIsExecuted() throws SQLException {
         }
     }
 
+    @Test
+    // gh-6583
+    void fetchExistsIsTimedWithProvidedTags() throws SQLException {
+        try (Connection conn = DriverManager.getConnection("jdbc:h2:mem:fetchExists")) {
+            MetricsDSLContext jooq = createDatabase(conn);
+
+            boolean exists = jooq.tag("name", "checkAuthorExists").fetchExists(table("author"), field("id").eq(1));
+            assertThat(exists).isTrue();
+
+            assertThat(meterRegistry.get("jooq.query")
+                .tag("name", "checkAuthorExists")
+                .tag("type", "read")
+                .timer()
+                .count()).isEqualTo(1);
+        }
+    }
+
     @Test
     void userExecuteListenerShouldBePreserved() {
         ExecuteListener userExecuteListener = mock(ExecuteListener.class);