import com.subgraph.orchid.Directory; //导入依赖的package包/类
public CircuitManagerImpl(TorConfig config, DirectoryDownloaderImpl directoryDownloader, Directory directory, ConnectionCache connectionCache, TorInitializationTracker initializationTracker) {
	this.config = config;
	this.directory = directory;
	this.connectionCache = connectionCache;
	this.pathChooser = CircuitPathChooser.create(config, directory);
	if(config.getUseEntryGuards() || config.getUseBridges()) {
		this.pathChooser.enableEntryGuards(new EntryGuards(config, connectionCache, directoryDownloader, directory));
	}
	this.pendingExitStreams = new PendingExitStreams(config);
	this.circuitCreationTask = new CircuitCreationTask(config, directory, connectionCache, pathChooser, this, initializationTracker);
	this.activeCircuits = new HashSet<CircuitImpl>();
	this.cleanInternalCircuits = new LinkedList<InternalCircuit>();
	this.random = new TorRandom();
	
	this.initializationTracker = initializationTracker;
	this.hiddenServiceManager = new HiddenServiceManager(config, directory, this);
	
	directoryDownloader.setCircuitManager(this);
}
 

import com.subgraph.orchid.Directory; //导入依赖的package包/类
DirectoryDownloadTask(TorConfig config, Directory directory, DirectoryDownloader downloader) {
	this.config = config;
	this.directory = directory;
	this.downloader = downloader;
	this.random = new TorRandom();
	this.outstandingDescriptorTasks = new AtomicInteger();
	this.descriptorProcessor = new DescriptorProcessor(config, directory);
}
 

import com.subgraph.orchid.Directory; //导入依赖的package包/类
public synchronized void start(Directory directory) {
	if(isStarted) {
		logger.warning("Directory downloader already running");
		return;
	}
	if(circuitManager == null) {
		throw new IllegalStateException("Must set CircuitManager instance with setCircuitManager() before starting.");
	}

	downloadTask = new DirectoryDownloadTask(config, directory, this);
	downloadTaskThread = new Thread(downloadTask);
	downloadTaskThread.start();
	isStarted = true;
}
 

import com.subgraph.orchid.Directory; //导入依赖的package包/类
public EntryGuards(TorConfig config, ConnectionCache connectionCache, DirectoryDownloader directoryDownloader, Directory directory) {
	this.config = config;
	this.random = new TorRandom();
	this.nodeChooser = new CircuitNodeChooser(config, directory);
	this.connectionCache = connectionCache;
	this.directory = directory;
	this.pendingProbes = new HashSet<GuardEntry>();
	this.bridges = new Bridges(config, directoryDownloader);
	this.lock = new Object();
	this.executor = Threading.newPool("EntryGuards worker");
}
 

import com.subgraph.orchid.Directory; //导入依赖的package包/类
public HiddenServiceManager(TorConfig config, Directory directory, CircuitManagerImpl circuitManager) {
	this.config = config;
	this.directory = directory;
	this.hiddenServices = new HashMap<String, HiddenService>();
	this.hsDirectories = new HSDirectories(directory);
	this.circuitManager = circuitManager;
}
 

import com.subgraph.orchid.Directory; //导入依赖的package包/类
CircuitCreationTask(TorConfig config, Directory directory, ConnectionCache connectionCache, CircuitPathChooser pathChooser, CircuitManagerImpl circuitManager, TorInitializationTracker initializationTracker) {
	this.config = config;
	this.directory = directory;
	this.connectionCache = connectionCache;
	this.circuitManager = circuitManager;
	this.initializationTracker = initializationTracker;
	this.pathChooser = pathChooser;
	this.executor = Threading.newPool("CircuitCreationTask worker");
	this.buildHandler = createCircuitBuildHandler();
	this.internalBuildHandler = createInternalCircuitBuildHandler();
	this.predictor = new CircuitPredictor();
	this.lastNewCircuit = new AtomicLong();
}
 

import com.subgraph.orchid.Directory; //导入依赖的package包/类
public EntryGuards(TorConfig config, ConnectionCache connectionCache, DirectoryDownloader directoryDownloader, Directory directory) {
	this.config = config;
	this.random = new TorRandom();
	this.nodeChooser = new CircuitNodeChooser(config, directory);
	this.connectionCache = connectionCache;
	this.directory = directory;
	this.pendingProbes = new HashSet<GuardEntry>();
	this.bridges = new Bridges(config, directoryDownloader);
	this.lock = new Object();
	this.executor = Executors.newCachedThreadPool();
}
 

import com.subgraph.orchid.Directory; //导入依赖的package包/类
CircuitCreationTask(TorConfig config, Directory directory, ConnectionCache connectionCache, CircuitPathChooser pathChooser, CircuitManagerImpl circuitManager, TorInitializationTracker initializationTracker) {
	this.config = config;
	this.directory = directory;
	this.connectionCache = connectionCache;
	this.circuitManager = circuitManager;
	this.initializationTracker = initializationTracker;
	this.pathChooser = pathChooser;
	this.executor = Executors.newCachedThreadPool();
	this.buildHandler = createCircuitBuildHandler();
	this.internalBuildHandler = createInternalCircuitBuildHandler();
	this.predictor = new CircuitPredictor();
	this.lastNewCircuit = new AtomicLong();
}