add jpa query timeout and tests for it (#244)

* add jpa query timeout and tests for it

* add check exception message, unit for timeout, checkstyle

---------

Co-authored-by: m.zharinova <[email protected]>
Co-authored-by: Ivan Vakhrushev <[email protected]>

src/main/resources/application.yml

@@ -15,6 +15,10 @@ spring:
             hibernate:
                 dialect: org.hibernate.dialect.PostgreSQLDialect
                 enable_lazy_load_no_trans: false
+            jakarta:
+                persistence:
+                    query:
+                        timeout: 1000 # 1 second
     main:
         banner-mode: off
     profiles:

src/test/java/com/mfvanek/salary/calc/repositories/JpaPropertiesTest.java

@@ -0,0 +1,37 @@
+package com.mfvanek.salary.calc.repositories;
+
+import com.mfvanek.salary.calc.support.TestBase;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.Query;
+import jakarta.persistence.QueryTimeoutException;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import static org.assertj.core.api.Assertions.assertThatNoException;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+class JpaPropertiesTest extends TestBase {
+
+    @Autowired
+    EntityManager entityManager;
+
+    @Test
+    void failsWhenQueryTooLong() {
+        final Query query = entityManager
+                .createNativeQuery(
+                        "SELECT pg_sleep(5)");
+        assertThatThrownBy(query::getResultList)
+                .isInstanceOf(QueryTimeoutException.class)
+                .hasMessageContaining("ERROR: canceling statement due to user request");
+    }
+
+    @Test
+    @DisplayName("Does not throw exception when query does not exceed timeout")
+    void exceptionWithNotLongQuery() {
+        final Query query = entityManager
+                .createNativeQuery(
+                        "SELECT pg_sleep(3.9)");
+        assertThatNoException().isThrownBy(query::getResultList);
+    }
+}

src/test/resources/application-test.yml

@@ -1,3 +1,10 @@
 logging:
     level:
         org.springframework.orm.jpa.JpaTransactionManager: DEBUG
+spring:
+    jpa:
+        properties:
+            jakarta:
+                persistence:
+                    query:
+                        timeout: 4000 # milliseconds