Deploy war alongside jar. Add webapp to Tomcat

TomcatConfig.java

import java.io.File;
import java.util.Arrays;
import javax.servlet.ServletException;

import org.apache.catalina.startup.Tomcat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.embedded.EmbeddedServletContainerFactory;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;

/**
 * @author Nejc Korasa
 */

@Configuration
@Profile("grab-client")
public class TomcatConfig
{
  private static final Logger LOG = LoggerFactory.getLogger(TomcatConfig.class);

  @Bean
  public EmbeddedServletContainerFactory servletContainerFactory()
  {
    return new TomcatEmbeddedServletContainerFactory()
    {

      @Override
      protected TomcatEmbeddedServletContainer getTomcatEmbeddedServletContainer(final Tomcat tomcat)
      {
        try
        {
          final String contextPath = "/client";
          final String warPath = getWarPath(tomcat.getHost().getAppBaseFile(), "client.war");

          LOG.info(String.format("Adding client war to Tomcat [contextPath, warPath] : %s, %s", contextPath, warPath));

          tomcat
              .addWebapp(contextPath, warPath)
              .setParentClassLoader(getClass().getClassLoader());

          LOG.info(String.format("Catalina base set to :%s", tomcat.getServer().getCatalinaBase()));
        }
        catch (final ServletException ex)
        {
          throw new IllegalStateException("Failed to add web app", ex);
        }

        return super.getTomcatEmbeddedServletContainer(tomcat);
      }
    };
  }

  private static String getWarPath(final File base, final String warName)
  {
    final File[] files = base.listFiles((dir, name) -> name.equals(warName));
    return files == null ? null : Arrays.stream(files).findFirst().map(File::getAbsolutePath).orElse(null);
  }
}