Thrift - 结合阅读 http 和原始处理

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【中文标题】Thrift - 结合阅读 http 和原始处理【英文标题】:Thrift - combine reading http and raw processing 【发布时间】:2015-04-13 06:18:17 【问题描述】:

我正在查看Thrift's tutorial example。我正在尝试创建一个处理原始节俭请求(原始)和 javascript 请求(http)的服务器。

java 服务器直接从套接字读取 - new TServerSocket(9090) - 使用 thrift 的协议处理请求。

不过,javascript 示例需要一个 http 服务器 (Httpd.java)。我在下载的源代码中找到了它。见下文。

两者处理传入字节的方式不同。 如何将这两种处理结合起来?拥有快速的原始处理,结合用于读取浏览器请求的 http 处理?

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import java.io.File;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URLDecoder;
import java.util.Locale;

import org.apache.http.ConnectionClosedException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpServerConnection;
import org.apache.http.HttpStatus;
import org.apache.http.MethodNotSupportedException;
import org.apache.http.entity.ContentProducer;
import org.apache.http.entity.EntityTemplate;
import org.apache.http.entity.FileEntity;
import org.apache.http.impl.DefaultHttpResponseFactory;
import org.apache.http.impl.DefaultHttpServerConnection;
import org.apache.http.impl.NoConnectionReuseStrategy;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.BasicHttpProcessor;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.protocol.HttpRequestHandler;
import org.apache.http.protocol.HttpRequestHandlerRegistry;
import org.apache.http.protocol.HttpService;
import org.apache.http.util.EntityUtils;
import org.apache.thrift.TProcessor;
import org.apache.thrift.protocol.TJSONProtocol;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.transport.TMemoryBuffer;

// Generated code
import tutorial.*;
import shared.*;

import java.util.HashMap;

/**
 * Basic, yet fully functional and spec compliant, HTTP/1.1 file server.
 * <p>
 * Please note the purpose of this application is demonstrate the usage of
 * HttpCore APIs. It is NOT intended to demonstrate the most efficient way of
 * building an HTTP file server.
 * 
 * 
 */
public class Httpd 

    public static void main(String[] args) throws Exception 
        if (args.length < 1) 
            System.err.println("Please specify document root directory");
            System.exit(1);
        
        Thread t = new RequestListenerThread(8088, args[0]);
        t.setDaemon(false);
        t.start();
    

    static class HttpFileHandler implements HttpRequestHandler 

        private final String docRoot;

        public HttpFileHandler(final String docRoot) 
            super();
            this.docRoot = docRoot;
        

        public void handle(final HttpRequest request, final HttpResponse response, final HttpContext context) throws HttpException, IOException 

            String method = request.getRequestLine().getMethod().toUpperCase(Locale.ENGLISH);
            if (!method.equals("GET") && !method.equals("HEAD") && !method.equals("POST")) 
                throw new MethodNotSupportedException(method + " method not supported");
            
            String target = request.getRequestLine().getUri();

            if (request instanceof HttpEntityEnclosingRequest && target.equals("/thrift/service/tutorial/")) 
                HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
                byte[] entityContent = EntityUtils.toByteArray(entity);
                System.out.println("Incoming content: " + new String(entityContent));

                final String output = this.thriftRequest(entityContent);

                System.out.println("Outgoing content: "+output);

                EntityTemplate body = new EntityTemplate(new ContentProducer() 

                    public void writeTo(final OutputStream outstream) throws IOException 
                        OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
                        writer.write(output);
                        writer.flush();
                    

                );
                body.setContentType("text/html; charset=UTF-8");
                response.setEntity(body);
             else 
                final File file = new File(this.docRoot, URLDecoder.decode(target, "UTF-8"));
                if (!file.exists()) 

                    response.setStatusCode(HttpStatus.SC_NOT_FOUND);
                    EntityTemplate body = new EntityTemplate(new ContentProducer() 

                        public void writeTo(final OutputStream outstream) throws IOException 
                            OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
                            writer.write("<html><body><h1>");
                            writer.write("File ");
                            writer.write(file.getPath());
                            writer.write(" not found");
                            writer.write("</h1></body></html>");
                            writer.flush();
                        

                    );
                    body.setContentType("text/html; charset=UTF-8");
                    response.setEntity(body);
                    System.out.println("File " + file.getPath() + " not found");

                 else if (!file.canRead() || file.isDirectory()) 

                    response.setStatusCode(HttpStatus.SC_FORBIDDEN);
                    EntityTemplate body = new EntityTemplate(new ContentProducer() 

                        public void writeTo(final OutputStream outstream) throws IOException 
                            OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
                            writer.write("<html><body><h1>");
                            writer.write("Access denied");
                            writer.write("</h1></body></html>");
                            writer.flush();
                        

                    );
                    body.setContentType("text/html; charset=UTF-8");
                    response.setEntity(body);
                    System.out.println("Cannot read file " + file.getPath());

                 else 

                    response.setStatusCode(HttpStatus.SC_OK);
                    FileEntity body = new FileEntity(file, "text/html");
                    response.setEntity(body);
                    System.out.println("Serving file " + file.getPath());

                
            
        

        private String thriftRequest(byte[] input)
            try

                //Input
                TMemoryBuffer inbuffer = new TMemoryBuffer(input.length);           
                inbuffer.write(input);              
                TProtocol  inprotocol   = new TJSONProtocol(inbuffer);                   

                //Output
                TMemoryBuffer outbuffer = new TMemoryBuffer(100);           
                TProtocol outprotocol   = new TJSONProtocol(outbuffer);

                TProcessor processor = new Calculator.Processor(new CalculatorHandler());      
                processor.process(inprotocol, outprotocol);

                byte[] output = new byte[outbuffer.length()];
                outbuffer.readAll(output, 0, output.length);

                return new String(output,"UTF-8");
            catch(Throwable t)
                return "Error:"+t.getMessage();
            


        

    

    static class RequestListenerThread extends Thread 

        private final ServerSocket serversocket;
        private final HttpParams params;
        private final HttpService httpService;

        public RequestListenerThread(int port, final String docroot) throws IOException 
            this.serversocket = new ServerSocket(port);
            this.params = new BasicHttpParams();
            this.params.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 1000).setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
                    .setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false).setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true)
                    .setParameter(CoreProtocolPNames.ORIGIN_SERVER, "HttpComponents/1.1");

            // Set up the HTTP protocol processor
            HttpProcessor httpproc = new BasicHttpProcessor();

            // Set up request handlers
            HttpRequestHandlerRegistry reqistry = new HttpRequestHandlerRegistry();
            reqistry.register("*", new HttpFileHandler(docroot));

            // Set up the HTTP service
            this.httpService = new HttpService(httpproc, new NoConnectionReuseStrategy(), new DefaultHttpResponseFactory());
            this.httpService.setParams(this.params);
            this.httpService.setHandlerResolver(reqistry);
        

        public void run() 
            System.out.println("Listening on port " + this.serversocket.getLocalPort());
            System.out.println("Point your browser to http://localhost:8088/tutorial/js/tutorial.html");

            while (!Thread.interrupted()) 
                try 
                    // Set up HTTP connection
                    Socket socket = this.serversocket.accept();
                    DefaultHttpServerConnection conn = new DefaultHttpServerConnection();
                    System.out.println("Incoming connection from " + socket.getInetAddress());
                    conn.bind(socket, this.params);

                    // Start worker thread
                    Thread t = new WorkerThread(this.httpService, conn);
                    t.setDaemon(true);
                    t.start();
                 catch (InterruptedIOException ex) 
                    break;
                 catch (IOException e) 
                    System.err.println("I/O error initialising connection thread: " + e.getMessage());
                    break;
                
            
        
    

    static class WorkerThread extends Thread 

        private final HttpService httpservice;
        private final HttpServerConnection conn;

        public WorkerThread(final HttpService httpservice, final HttpServerConnection conn) 
            super();
            this.httpservice = httpservice;
            this.conn = conn;
        

        public void run() 
            System.out.println("New connection thread");
            HttpContext context = new BasicHttpContext(null);
            try 
                while (!Thread.interrupted() && this.conn.isOpen()) 
                    this.httpservice.handleRequest(this.conn, context);
                
             catch (ConnectionClosedException ex) 
                System.err.println("Client closed connection");
             catch (IOException ex) 
                System.err.println("I/O error: " + ex.getMessage());
             catch (HttpException ex) 
                System.err.println("Unrecoverable HTTP protocol violation: " + ex.getMessage());
             finally 
                try 
                    this.conn.shutdown();
                 catch (IOException ignore) 
                
            
        

    


【问题讨论】:

这个 Httpd 服务器太棒了。它提供静态页面(作为 GET)以及 Thrift 处理。 【参考方案1】:

一种方法是使用不同的端口。

例如,在教程示例中,端口 8088 可以绑定到 HTTP,而端口 9090 可以绑定到套接字传输。

如果我想使用不同的传输,我会在不同的端口处理它。

** 令人惊讶的是,我只有在提交问题后才会想到答案。有没有办法在我的脑海中提交一个问题以更快地得到答案?至少社区喜欢我的大脑;)

【讨论】:

不加http处理,没看到其他办法。

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