云计算
本篇文章为大家展示了Storm中对于Protocol进行的封装是怎样的，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
对于Protocol的封装
package com.digitalpebble.storm.crawler.fetcher;import com.digitalpebble.storm.crawler.util.Configuration;public interface Protocol { public ProtocolResponse getProtocolOutput(String url) throws Exception; public void configure(Configuration conf);}
对于ProtoclFactory的封装
package com.digitalpebble.storm.crawler.fetcher;import java.net.URL;import java.util.WeakHashMap;import com.digitalpebble.storm.crawler.fetcher.asynchttpclient.AHProtocol;import com.digitalpebble.storm.crawler.util.Configuration;/** * @author Yin Shuai * */public class ProtocolFactory { private final Configuration config; private final WeakHashMap<String, Protocol> cache = new WeakHashMap<String, Protocol>();public ProtocolFactory(Configuration conf) { config = conf; } /** Returns an instance of the protocol to use for a given URL **/ public synchronized Protocol getProtocol(URL url) { // get the protocol String protocol = url.getProtocol(); Protocol pp = cache.get(protocol); if (pp != null) return pp; // yuk! hardcoded for now pp = new AHProtocol(); pp.configure(config); cache.put(protocol,pp); return pp; }}
对于ProtocolResponse的封装
package com.digitalpebble.storm.crawler.fetcher;import java.util.HashMap;public class ProtocolResponse { final byte[] content; final int statusCode; final HashMap<String, String[]> metadata; public ProtocolResponse(byte[] c, int s, HashMap<String, String[]> md){ content = c; statusCode = s; metadata = md; } public byte[] getContent() { return content; } public int getStatusCode() { return statusCode; } public HashMap<String, String[]> getMetadata() { return metadata; }}
上述内容就是Storm中对于Protocol进行的封装是怎样的，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注资讯频道。
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