GuiceWebModule.java

package ru.vyarus.dropwizard.guice.module.jersey;

import com.google.inject.servlet.GuiceFilter;
import com.google.inject.servlet.ServletModule;
import io.dropwizard.setup.Environment;
import ru.vyarus.dropwizard.guice.module.installer.internal.AdminGuiceFilter;

import javax.servlet.DispatcherType;
import java.util.EnumSet;

/**
 * Registers {@link GuiceFilter} for application and admin scopes. Also, initializes request and session scopes
 * (as first registered servlet module).
 * <p>
 * Servlet modules support may be disabled, see
 * {@link ru.vyarus.dropwizard.guice.GuiceyOptions#GuiceFilterRegistration}.
 *
 * @author Vyacheslav Rusakov
 * @since 21.08.2016
 */
public class GuiceWebModule extends ServletModule {

    /**
     * Guice filter registration name.
     */
    public static final String GUICE_FILTER = "Guice Filter";
    private static final String ROOT_PATH = "/*";

    private final Environment environment;
    private final EnumSet<DispatcherType> dispatcherTypes;

    public GuiceWebModule(final Environment environment, final EnumSet<DispatcherType> dispatcherTypes) {
        this.environment = environment;
        this.dispatcherTypes = dispatcherTypes;
    }

    @Override
    protected void configureServlets() {
        final GuiceFilter guiceFilter = new GuiceFilter();
        environment.servlets().addFilter(GUICE_FILTER, guiceFilter)
                .addMappingForUrlPatterns(dispatcherTypes, false, ROOT_PATH);
        environment.admin().addFilter(GUICE_FILTER, new AdminGuiceFilter(guiceFilter))
                .addMappingForUrlPatterns(dispatcherTypes, false, ROOT_PATH);
    }
}