content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * 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 io.activej.launchers.fs;
  
  import io.activej.config.Config;
  import io.activej.config.ConfigModule;
  import io.activej.config.converter.ConfigConverters;
  import io.activej.eventloop.Eventloop;
  import io.activej.eventloop.inspector.ThrottlingController;
  import io.activej.fs.FileSystem;
  import io.activej.fs.IFileSystem;
  import io.activej.fs.tcp.FileSystemServer;
  import io.activej.inject.annotation.Eager;
  import io.activej.inject.annotation.Provides;
  import io.activej.inject.binding.OptionalDependency;
  import io.activej.inject.module.Module;
  import io.activej.jmx.JmxModule;
  import io.activej.launcher.Launcher;
  import io.activej.reactor.Reactor;
  import io.activej.reactor.nio.NioReactor;
  import io.activej.service.ServiceGraphModule;
  
  import java.nio.file.Path;
  import java.nio.file.Paths;
  import java.util.concurrent.Executor;
  
  import static io.activej.config.converter.ConfigConverters.ofPath;
  import static io.activej.inject.module.Modules.combine;
  import static io.activej.launchers.fs.Initializers.ofFileSystemServer;
  import static io.activej.launchers.initializers.Initializers.ofEventloop;
  
  public class SimpleTcpServerLauncher extends Launcher {
  	public static final String PROPERTIES_FILE = "fs-server.properties";
  	public static final Path DEFAULT_PATH = Paths.get(System.getProperty("java.io.tmpdir"), "fs-storage");
  	public static final String DEFAULT_SERVER_LISTEN_ADDRESS = "*:9000";
  
  	@Provides
  	public NioReactor reactor(Config config, OptionalDependency<ThrottlingController> throttlingController) {
  		return Eventloop.builder()
  			.initialize(ofEventloop(config.getChild("eventloop")))
  			.withInspector(throttlingController.orElse(null))
  			.build();
  	}
  
  	@Eager
  	@Provides
  	FileSystemServer fileSystemServer(NioReactor reactor, IFileSystem fileSystem, Config config) {
  		return FileSystemServer.builder(reactor, fileSystem)
  			.initialize(ofFileSystemServer(config.getChild("fs")))
  			.build();
  	}
  
  	@Provides
  	IFileSystem fileSystem(Reactor reactor, Executor executor, Config config) {
  		return FileSystem.create(reactor, executor, config.get(ofPath(), "fs.path", DEFAULT_PATH));
  	}
  
  	@Provides
  	Executor executor(Config config) {
  		return ConfigConverters.getExecutor(config.getChild("fs.executor"));
  	}
  
  	@Provides
  	Config config() {
  		return createConfig()
  			.overrideWith(Config.ofClassPathProperties(PROPERTIES_FILE, true))
  			.overrideWith(Config.ofSystemProperties("config"));
  	}
  
  	protected Config createConfig() {
  		return Config.create()
  			.with("fs.listenAddresses", DEFAULT_SERVER_LISTEN_ADDRESS);
  	}
  
  	protected Module getBusinessLogicModule() {
  		return Module.empty();
  	}
  
  	@Override
  	protected final Module getModule() {
  		return combine(
  			getBusinessLogicModule(),
  			ServiceGraphModule.create(),
  			JmxModule.create(),
  			ConfigModule.builder()
  				.withEffectiveConfigLogger()
  				.build());
  	}
  
  	@Override
  	protected void run() throws Exception {
  		awaitShutdown();
  	}
  
  	public static void main(String[] args) throws Exception {
  		new SimpleTcpServerLauncher().launch(args);
  	}
  }
  