Run liquibase under Tomcat?

Question

How would one start a liquibase schema db check aginst a base line under Tomcat on a schedule? Like how to deploy liquibase under Tomcat?

Answer 1

What about utilizing ServletContextListener and inside it create new object of Liquibase.

something like

import java.sql.Connection;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;

import liquibase.Liquibase;
import liquibase.database.Database;
import liquibase.database.DatabaseFactory;
import liquibase.database.jvm.JdbcConnection;
import liquibase.resource.ClassLoaderResourceAccessor;
import liquibase.resource.CompositeResourceAccessor;
import liquibase.resource.FileSystemResourceAccessor;
import lombok.SneakyThrows;

@WebListener
public class LiquibaseListener implements ServletContextListener {

  @SneakyThrows
  @Override
  public void contextInitialized(ServletContextEvent sce) {
    final Connection connection = null;
    final Database database = DatabaseFactory.getInstance().findCorrectDatabaseImplementation(new JdbcConnection(connection));
    final Liquibase liquibase = new Liquibase("changelogpath", new CompositeResourceAccessor(new ClassLoaderResourceAccessor(), new FileSystemResourceAccessor()), database);
    liquibase.update("");
    
  }
}

Or have a look inside SpringLiquibase how this is done for spring framework and you can get inspiration from there.