juzu.impl.bridge.Bridge Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of juzu-core
Where all the magic happens
There is a newer version: 1.2.0
/*
 * Copyright 2013 eXo Platform SAS
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package juzu.impl.bridge;

import juzu.impl.plugin.application.Application;
import juzu.impl.plugin.application.ApplicationLifeCycle;
import juzu.impl.asset.AssetServer;
import juzu.impl.fs.spi.ReadFileSystem;
import juzu.impl.common.Logger;
import juzu.impl.common.Tools;
import juzu.impl.plugin.module.Module;
import juzu.impl.resource.ResourceResolver;

import java.io.Closeable;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;

/** @author Julien Viet */
public class Bridge implements Closeable {

  /** . */
  public final Logger log;

  /** . */
  private final AssetServer server;

  /** . */
  private final BridgeConfig config;

  /** . */
  private final ReadFileSystem resources;

  /** . */
  private final ResourceResolver resolver;

  /** . */
  public final Module module;

  /** . */
  public ApplicationLifeCycle application;

  FutureTask refreshTask = new FutureTask(new Callable() {
      public Boolean call() throws Exception {
          if(application == null) {
              application = new ApplicationLifeCycle(
                      log,
                      module.context.getLifeCycle(),
                      config.injectImpl,
                      config.name,
                      resources,
                      server,
                      resolver);
          }
          return application.refresh();
      }
  });

  public Bridge(Logger log, Module module, BridgeConfig config, ReadFileSystem resources, AssetServer server, ResourceResolver resolver) {
    this.log = log;
    this.module = module;
    this.config = config;
    this.resources = resources;
    this.server = server;
    this.resolver = resolver;
  }

  public BridgeConfig getConfig() {
    return config;
  }

  public boolean refresh() throws Exception {
    return refresh(true);
  }

  public boolean refresh(boolean recompile) throws Exception {

    // For now refresh module first
    boolean recompiled = module.context.getLifeCycle().refresh(recompile);

    if(recompiled) {
        // If source code was recompiled (in LIVE mode), we need create new FutureTask and refresh again
        // Concurrency is not supported in LIVE mode
        refreshTask = new FutureTask(new Callable() {
          public Boolean call() throws Exception {
                if(application == null) {
                    application = new ApplicationLifeCycle(
                            log,
                            module.context.getLifeCycle(),
                            config.injectImpl,
                            config.name,
                            resources,
                            server,
                            resolver);
                }
                return application.refresh();
          }
        });
    }
    
    refreshTask.run();
    return refreshTask.get();
  }

  public Application getApplication() {
    return application.getApplication();
  }

  public void close() {
    Tools.safeClose(application);
  }
}