gistfile1.java

package net.stepniak.common.server.context;

import net.stepniak.common.server.util.ServerApiAuthorizationFilterImpl;
import net.stepniak.common.server.util.ServerApiOriginFilter;
import org.glassfish.jersey.server.ServerProperties;
import org.glassfish.jersey.server.spring.SpringWebApplicationInitializer;
import org.glassfish.jersey.servlet.ServletContainer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.request.RequestContextListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.filter.DelegatingFilterProxy;

import javax.servlet.FilterRegistration;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;

public abstract class ApplicationInitializer extends SpringWebApplicationInitializer {

  @Override
  public void onStartup(ServletContext servletContext) throws ServletException {
    AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
    registerInContext(rootContext);
    rootContext.setDisplayName(getApplicationName());
    rootContext.scan(getBaseScanPackages());

    // The following line is required to avoid having jersey-spring3 registering it's own Spring root context.
    servletContext.setInitParameter("contextConfigLocation", "");
    servletContext.setInitParameter("com.newrelic.agent.APPLICATION_NAME", getApplicationName());

    servletContext.addListener(new ContextLoaderListener(rootContext));
    servletContext.addListener(new RequestContextListener());

    initJersey(servletContext);
    initSpringSecurity(rootContext, servletContext);
    initDefaultJaxrsConfig(servletContext);
    initBootstrap(servletContext);

    final FilterRegistration.Dynamic apiOriginFilter = servletContext.addFilter(
      "ApiOriginFilter",
      ServerApiOriginFilter.class
    );

    apiOriginFilter.addMappingForUrlPatterns(null, false, "/*");
  }

  private void initSpringSecurity(AnnotationConfigWebApplicationContext rootContext, ServletContext servletContext) {
    FilterRegistration.Dynamic springSecurity = servletContext.addFilter(
      "springSecurityFilterChain",
      new DelegatingFilterProxy("springSecurityFilterChain", rootContext)
    );
    springSecurity.addMappingForUrlPatterns(null, true, "/*");
  }


  protected void initJersey(ServletContext servletContext) {

    final ServletRegistration.Dynamic dispatcher = servletContext.addServlet("jersey", new ServletContainer());

    dispatcher.setInitParameter("com.newrelic.agent.APPLICATION_NAME", getApplicationName());
    dispatcher.setInitParameter("javax.ws.rs.Application", getApplicationClassName());
    dispatcher.setInitParameter(ServerProperties.WADL_FEATURE_DISABLE, "true");
    dispatcher.setInitParameter(ServerProperties.APPLICATION_NAME, getApplicationName());

    dispatcher.addMapping("/*");
    dispatcher.setLoadOnStartup(1);
  }

  protected void initDefaultJaxrsConfig(ServletContext servletContext) {

    final ServletRegistration.Dynamic dispatcher = servletContext.addServlet("DefaultJaxrsConfig", "com.wordnik.swagger.jaxrs.config.DefaultJaxrsConfig");

    dispatcher.setInitParameter("com.newrelic.agent.APPLICATION_NAME", getApplicationName());
    dispatcher.setInitParameter("api.version", "1.0.0");

//    dispatcher.setInitParameter("swagger.api.basepath", "http://localhost:8080");

    dispatcher.setInitParameter("swagger.filter", ServerApiAuthorizationFilterImpl.class.getName());
    dispatcher.setLoadOnStartup(2);
  }

  protected void initBootstrap(ServletContext servletContext) {
    final ServletRegistration.Dynamic dispatcher = servletContext.addServlet("SwaggerBootstrap", "net.stepniak.common.server.SwaggerBootstrap");
    dispatcher.setLoadOnStartup(2);
  }

  protected abstract void registerInContext(AnnotationConfigWebApplicationContext rootContext);

  protected abstract String[] getBaseScanPackages();

  protected abstract String getApplicationName();

  protected abstract String getApplicationClassName();

}