Liquibase Extension in a Java Console App

1

I’m using Liquibase Core API to automate database deployments, I’m working on Postgres and I have an extension for it for custom functionality, I’m unable to find a way to use the extension in my Java code or I’m unable to figure out how to make it work.

public static void main(String[] args) throws Exception {
        Class.forName("org.postgresql.Driver");
        Connection connection = DriverManager.getConnection("ConnectionString", "UserName", "");
        Database database = DatabaseFactory.getInstance().findCorrectDatabaseImplementation(new JdbcConnection(connection));

        Map<String, Object> scopedSettings = new LinkedHashMap<>();
        scopedSettings.put(Scope.Attr.database.name(), database);

        // Register PrimaryKeyChangelogHistoryService
       Scope.getCurrentScope().getSingleton(ChangeLogHistoryServiceFactory.class).register(new PrimaryKeyChangelogHistoryService());

        String scopeId = Scope.enter(scopedSettings);
        Scope.child(scopedSettings, () -> {
            CommandScope commandScope = new CommandScope(UpdateCommandStep.COMMAND_NAME);
            commandScope.addArgumentValue(DbUrlConnectionArgumentsCommandStep.DATABASE_ARG, database);
            commandScope.addArgumentValue(UpdateCommandStep.CHANGELOG_FILE_ARG, "changelog/changelog-root.xml");
            commandScope.execute();
        });
        Scope.exit(scopeId);
    }
  1. This code works partially, but doesn’t load my Extension (Jar), should the Jar be added under resources folder?
  2. Can I add a reference to my Extension project instead of the Jar and make it load? (I’d prefer this more if its possible)
2

You extension JAR needs to be in your classpath in order to be loaded.

1 Like
3

I got it working, I copied my extension code into Java Project and added service details in META-INF/services folder and it worked fine.