Use liquibase schema in LiquibaseEndpoint if it set

See gh-47300

Signed-off-by: Nabil Fawwaz Elqayyim <master@nabilfawwaz.com>

Author: xyraclius

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/liquibase/LiquibaseEndpoint.java

@@ -43,6 +43,7 @@
  * {@link Endpoint @Endpoint} to expose liquibase info.
  *
  * @author Eddú Meléndez
+ * @author Nabil Fawwaz Elqayyim
  * @since 2.0.0
  */
 @Endpoint(id = "liquibase")
@@ -79,9 +80,12 @@ private LiquibaseBeanDescriptor createReport(SpringLiquibase liquibase, Database
 			Database database = null;
 			try {
 				database = factory.findCorrectDatabaseImplementation(connection);
-				String defaultSchema = liquibase.getDefaultSchema();
-				if (StringUtils.hasText(defaultSchema)) {
-					database.setDefaultSchemaName(defaultSchema);
+				String schemaToUse = liquibase.getLiquibaseSchema();
+				if (!StringUtils.hasText(schemaToUse)) { // Use liquibase-schema if set, otherwise fall back to default-schema
+					schemaToUse = liquibase.getDefaultSchema();
+				}
+				if (StringUtils.hasText(schemaToUse)) {
+					database.setDefaultSchemaName(schemaToUse);
 				}
 				database.setDatabaseChangeLogTableName(liquibase.getDatabaseChangeLogTable());
 				database.setDatabaseChangeLogLockTableName(liquibase.getDatabaseChangeLogLockTable());

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/liquibase/LiquibaseEndpointTests.java

@@ -50,6 +50,7 @@
  * @author Andy Wilkinson
  * @author Stephane Nicoll
  * @author Leo Li
+ * @author Nabil Fawwaz Elqayyim
  */
 @WithResource(name = "db/changelog/db.changelog-master.yaml", content = """
 		databaseChangeLog:
@@ -119,6 +120,21 @@ void invokeWithCustomTables() {
 			});
 	}
 
+	@Test
+	@WithResource(name = "db/create-custom-schema.sql", content = "CREATE SCHEMA LIQUIBASE_SCHEMA;")
+	void invokeWithLiquibaseSchema() {
+		this.contextRunner.withUserConfiguration(Config.class, DataSourceWithSchemaConfiguration.class)
+				.withPropertyValues("spring.liquibase.liquibase-schema=LIQUIBASE_SCHEMA")
+				.run((context) -> {
+					Map<String, LiquibaseBeanDescriptor> liquibaseBeans = context.getBean(LiquibaseEndpoint.class)
+							.liquibaseBeans()
+							.getContexts()
+							.get(context.getId())
+							.getLiquibaseBeans();
+					assertThat(liquibaseBeans.get("liquibase").getChangeSets()).hasSize(1);
+				});
+	}
+
 	@Test
 	void connectionAutoCommitPropertyIsReset() {
 		this.contextRunner.withUserConfiguration(Config.class).run((context) -> {