Upgrade postgresql to 16.1 (#475)

closes #474 

Here are some things you should have thought about:

**Multi-Tenancy**
- [ ] Extended new entities with `AbstractTenantAwareEntity`?
- [ ] New entity added to `TenantAwareDatabaseConfiguration`?
- [ ] Tested with `dev-multitenant` profile?

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.examples/docker-compose/docker-compose.yml

@@ -38,7 +38,7 @@ services:
         condition: service_started
 
   postgres:
-    image: postgres:9.6
+    image: postgres:16.1
     ports:
       - '5432:5432'
     environment:

README.md

@@ -26,7 +26,7 @@ Wenn du mehr Informationen und Bilder über dieses Projekt sehen möchtest dann
 
 * [JDK 21](https://adoptium.net)
 * [Docker 20.10+](https://www.docker.com/)
-* [PostgreSQL 9.6+](#database)
+* [PostgreSQL 16.1+](#database)
 * [E-Mail-Server](#e-mail-server)
 * [OpenID Connect identity provider](#openid-connect-identity-provider)
 

docker-compose.yml

@@ -1,7 +1,7 @@
 version: '3.8'
 services:
   postgres:
-    image: postgres:9.6
+    image: postgres:16.1
     environment:
       POSTGRES_DB: zeiterfassung
       POSTGRES_USER: admin_user

src/test/java/de/focusshift/zeiterfassung/TestContainersBase.java

@@ -8,16 +8,11 @@
 
 public abstract class TestContainersBase {
 
-    static final PostgreSQLContainer<?> postgres = new PostgreSQLContainer<>(IMAGE + ":9.6")
-        .withDatabaseName("zeiterfassung")
-        .withInitScript("init-user-db.sql");
+    static final TestPostgreSQLContainer postgre = new TestPostgreSQLContainer();
 
     @DynamicPropertySource
-    static void postgresDBProperties(DynamicPropertyRegistry registry) {
-        postgres.start();
-        registry.add("spring.datasource.url", postgres::getJdbcUrl);
-        registry.add("spring.liquibase.parameters.database", postgres::getDatabaseName);
-        registry.add("admin.datasource.username", postgres::getUsername);
-        registry.add("admin.datasource.password", postgres::getPassword);
+    static void registerProperties(DynamicPropertyRegistry registry) {
+        postgre.start();
+        postgre.configureSpringDataSource(registry);
     }
 }

src/test/java/de/focusshift/zeiterfassung/TestPostgreSQLContainer.java

@@ -0,0 +1,40 @@
+package de.focusshift.zeiterfassung;
+
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
+import org.testcontainers.containers.PostgreSQLContainer;
+
+public class TestPostgreSQLContainer extends PostgreSQLContainer<TestPostgreSQLContainer> {
+
+    private static final String VERSION = "16.1";
+
+    public TestPostgreSQLContainer() {
+        super(IMAGE + ":" + VERSION);
+        this.withDatabaseName("zeiterfassung");
+        this.withCommand("--max_connections=1000", "--shared_buffers=240MB");
+        this.withInitScript("init-user-db.sql");
+    }
+
+    /**
+     * Sets the spring datasource configuration properties.
+     *
+     * <p>Usage:</p>
+     * <pre><code>
+     * static final TestPostgreContainer postgre = new TestPostgreContainer();
+     * &#64;DynamicPropertySource
+     * static void setupDataSource(DynamicPropertySource registry) {
+     *     postgre.start();
+     *     postgre.configureSpringDataSource(registry);
+     * }
+     * </code>
+     * </pre>
+     *
+     * @param registry
+     */
+    public void configureSpringDataSource(DynamicPropertyRegistry registry) {
+        registry.add("spring.datasource.url", this::getJdbcUrl);
+        registry.add("spring.liquibase.parameters.database", this::getDatabaseName);
+        registry.add("admin.datasource.username", this::getUsername);
+        registry.add("admin.datasource.password", this::getPassword);
+    }
+}

src/test/resources/init-user-db.sql

@@ -1,4 +1,5 @@
 CREATE USER "app_user" WITH PASSWORD 'app_password';
+GRANT ALL ON SCHEMA public TO "app_user";
 GRANT CONNECT ON DATABASE "zeiterfassung" TO "app_user";
 ALTER DEFAULT PRIVILEGES IN SCHEMA "public" GRANT SELECT, INSERT, UPDATE, DELETE, REFERENCES ON TABLES TO "app_user";
 ALTER DEFAULT PRIVILEGES IN SCHEMA "public" GRANT USAGE ON SEQUENCES TO "app_user";