SCM-Manager/scm-webapp/src/main/java/sonia/scm/lifecycle/modules/ScmEventBusModule.java

/*
 * MIT License
 *
 * Copyright (c) 2020-present Cloudogu GmbH and Contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
    
package sonia.scm.lifecycle.modules;

//~--- non-JDK imports --------------------------------------------------------

import com.google.common.annotations.VisibleForTesting;
import com.google.inject.AbstractModule;
import com.google.inject.TypeLiteral;
import com.google.inject.matcher.Matchers;
import com.google.inject.spi.InjectionListener;
import com.google.inject.spi.TypeEncounter;
import com.google.inject.spi.TypeListener;
import sonia.scm.event.ScmEventBus;

/**
 * Registers every instance to the scm-manager event bus.
 *
 * @author Sebastian Sdorra
 */
public class ScmEventBusModule extends AbstractModule {

  private final ScmEventBus eventBus;

  public ScmEventBusModule() {
    this(ScmEventBus.getInstance());
  }

  @VisibleForTesting
  ScmEventBusModule(ScmEventBus eventBus) {
    this.eventBus = eventBus;
  }

  @Override
  protected void configure() {
    bindListener(Matchers.any(), new TypeListener() {
      @Override
      public <I> void hear(TypeLiteral<I> type, TypeEncounter<I> encounter) {
        encounter.register((InjectionListener<I>) object -> eventBus.register(object));
      }
    });
  }
}