import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
private void downloadDescriptor() {
	logger.fine("Downloading descriptor for bridge: "+ target);
	try {
		final RouterDescriptor descriptor = directoryDownloader.downloadBridgeDescriptor(target);
		if(descriptor != null) {
			logger.fine("Descriptor received for bridge "+ target +". Adding to list of usable bridges");
			target.setDescriptor(descriptor);
			synchronized(lock) {
				bridgeRouters.add(target);
				lock.notifyAll();
			}
		}
	} catch (DirectoryRequestFailedException e) {
		logger.warning("Failed to download descriptor for bridge: "+ e.getMessage());
	}
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
private static DescriptorCache<RouterDescriptor> createBasicDescriptorCache(DirectoryStore store) {
	return new DescriptorCache<RouterDescriptor>(store, CacheFile.DESCRIPTOR_CACHE, CacheFile.DESCRIPTOR_JOURNAL) {
		@Override
		protected DocumentParser<RouterDescriptor> createDocumentParser(ByteBuffer buffer) {
			return parserFactory.createRouterDescriptorParser(buffer, false);
		}
	};
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
public boolean isHibernating() {
	final RouterDescriptor rd = downcastDescriptor();
	if(rd == null) {
		return false;
	} else {
		return rd.isHibernating();
	}
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
public TorPublicKey getIdentityKey() {
	final RouterDescriptor rd = downcastDescriptor();
	if(rd != null) {
		return rd.getIdentityKey();
	} else {
		return null;
	}
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
public int getAverageBandwidth() {
	final RouterDescriptor rd = downcastDescriptor();
	if(rd == null) {
		return 0;
	} else {
		return rd.getAverageBandwidth();
	}
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
public int getBurstBandwidth() {
	final RouterDescriptor rd = downcastDescriptor();
	if(rd == null) {
		return 0;
	} else {
		return rd.getBurstBandwidth();
	}
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
public int getObservedBandwidth() {
	final RouterDescriptor rd = downcastDescriptor();
	if(rd == null) {
		return 0;
	} else {
		return rd.getObservedBandwidth();
	}
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
private RouterDescriptor downcastDescriptor() {
	refreshDescriptor();
	if(descriptor instanceof RouterDescriptor) {
		return (RouterDescriptor) descriptor;
	} else {
		return null;
	}
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
public boolean parse(DocumentParsingResultHandler<RouterDescriptor> resultHandler) {
	this.resultHandler = resultHandler;
	startNewDescriptor();
	try {
		fieldParser.processDocument();
		return true;
	} catch(TorParsingException e) {
		resultHandler.parsingError(e.getMessage());
		return false;
	}
}
 

import com.subgraph.orchid.RouterDescriptor; //导入依赖的package包/类
public boolean isHibernating() {
	if(descriptor instanceof RouterDescriptor) {
		return ((RouterDescriptor)descriptor).isHibernating();
	} else {
		return false;
	}
}