Merge pull request #20417 from ferengra

* gh-20417:
  Polish "Add clearChecksums to Liquibase auto-configuration"
  Add clearCheckSums to Liquibase auto configuration

Closes gh-20417

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfiguration.java

@@ -64,6 +64,7 @@ import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
  * @author Dominic Gunn
  * @author Dan Zheng
  * @author András Deák
+ * @author Ferenc Gratzer
  * @since 1.1.0
  */
 @Configuration(proxyBeanMethods = false)
@@ -100,6 +101,7 @@ public class LiquibaseAutoConfiguration {
 			SpringLiquibase liquibase = createSpringLiquibase(liquibaseDataSource.getIfAvailable(),
 					dataSource.getIfUnique(), dataSourceProperties);
 			liquibase.setChangeLog(this.properties.getChangeLog());
+			liquibase.setClearCheckSums(this.properties.isClearChecksums());
 			liquibase.setContexts(this.properties.getContexts());
 			liquibase.setDefaultSchema(this.properties.getDefaultSchema());
 			liquibase.setLiquibaseSchema(this.properties.getLiquibaseSchema());

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseProperties.java

@@ -29,6 +29,7 @@ import org.springframework.util.Assert;
  *
  * @author Marcel Overdijk
  * @author Eddú Meléndez
+ * @author Ferenc Gratzer
  * @since 1.1.0
  */
 @ConfigurationProperties(prefix = "spring.liquibase", ignoreUnknownFields = false)
@@ -39,6 +40,12 @@ public class LiquibaseProperties {
 	 */
 	private String changeLog = "classpath:/db/changelog/db.changelog-master.yaml";
 
+	/**
+	 * Whether to clear all checksums in the current changelog, so they will be
+	 * recalculated upon the next update.
+	 */
+	private boolean clearChecksums;
+
 	/**
 	 * Comma-separated list of runtime contexts to use.
 	 */
@@ -187,6 +194,14 @@ public class LiquibaseProperties {
 		this.dropFirst = dropFirst;
 	}
 
+	public boolean isClearChecksums() {
+		return this.clearChecksums;
+	}
+
+	public void setClearChecksums(boolean clearChecksums) {
+		this.clearChecksums = clearChecksums;
+	}
+
 	public boolean isEnabled() {
 		return this.enabled;
 	}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfigurationTests.java

@@ -69,6 +69,7 @@ import static org.assertj.core.api.Assertions.contentOf;
  * @author Dominic Gunn
  * @author András Deák
  * @author Andrii Hrytsiuk
+ * @author Ferenc Gratzer
  */
 @ExtendWith(OutputCaptureExtension.class)
 class LiquibaseAutoConfigurationTests {
@@ -106,6 +107,7 @@ class LiquibaseAutoConfigurationTests {
 					assertThat(liquibase.getContexts()).isNull();
 					assertThat(liquibase.getDefaultSchema()).isNull();
 					assertThat(liquibase.isDropFirst()).isFalse();
+					assertThat(liquibase.isClearCheckSums()).isFalse();
 				}));
 	}
 
@@ -143,6 +145,7 @@ class LiquibaseAutoConfigurationTests {
 					assertThat(liquibase.getDatabaseChangeLogLockTable())
 							.isEqualTo(properties.getDatabaseChangeLogLockTable());
 					assertThat(liquibase.isDropFirst()).isEqualTo(properties.isDropFirst());
+					assertThat(liquibase.isClearCheckSums()).isEqualTo(properties.isClearChecksums());
 					assertThat(liquibase.isTestRollbackOnUpdate()).isEqualTo(properties.isTestRollbackOnUpdate());
 				}));
 	}
@@ -189,6 +192,13 @@ class LiquibaseAutoConfigurationTests {
 				.run(assertLiquibase((liquibase) -> assertThat(liquibase.isDropFirst()).isTrue()));
 	}
 
+	@Test
+	void overrideClearChecksums() {
+		this.contextRunner.withUserConfiguration(EmbeddedDataSourceConfiguration.class)
+				.withPropertyValues("spring.liquibase.clear-checksums:true")
+				.run(assertLiquibase((liquibase) -> assertThat(liquibase.isClearCheckSums()).isTrue()));
+	}
+
 	@Test
 	void overrideDataSource() {
 		this.contextRunner.withUserConfiguration(EmbeddedDataSourceConfiguration.class)