gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.util / org.gvsig.tools.util.impl / src / main / java / org / gvsig / simplehttpservice / HttpHandler.java @ 2213
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package org.gvsig.simplehttpservice; |
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import java.io.IOException; |
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import java.net.URLDecoder; |
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import java.util.Locale; |
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import org.apache.commons.lang3.StringUtils; |
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import org.apache.http.HttpException; |
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import org.apache.http.HttpRequest; |
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import org.apache.http.HttpResponse; |
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import org.apache.http.HttpStatus; |
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import org.apache.http.MethodNotSupportedException; |
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import org.apache.http.entity.ByteArrayEntity; |
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import org.apache.http.entity.ContentType; |
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import org.apache.http.nio.entity.NStringEntity; |
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import org.apache.http.nio.protocol.BasicAsyncRequestConsumer; |
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import org.apache.http.nio.protocol.BasicAsyncResponseProducer; |
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import org.apache.http.nio.protocol.HttpAsyncExchange; |
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import org.apache.http.nio.protocol.HttpAsyncRequestConsumer; |
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import org.apache.http.nio.protocol.HttpAsyncRequestHandler; |
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import org.apache.http.protocol.HttpContext; |
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import static org.gvsig.simplehttpservice.SimpleServer.INFO; |
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import static org.gvsig.simplehttpservice.SimpleServer.WARN; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import org.gvsig.simplehttpservice.commands.Command; |
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/**
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*
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* @author jjdelcerro
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*/
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public class HttpHandler implements HttpAsyncRequestHandler<HttpRequest> { |
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private static final Logger LOG = LoggerFactory.getLogger(HttpHandler.class); |
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private final SimpleServer server; |
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public HttpHandler(SimpleServer server) {
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super();
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this.server = server;
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} |
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@Override
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public HttpAsyncRequestConsumer<HttpRequest> processRequest(
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final HttpRequest request,
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final HttpContext context) {
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// Buffer request content in memory for simplicity
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return new BasicAsyncRequestConsumer(); |
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} |
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@Override
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public void handle( |
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final HttpRequest request,
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final HttpAsyncExchange httpexchange,
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final HttpContext context) throws HttpException, IOException { |
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final HttpResponse response = httpexchange.getResponse();
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handleInternal(request, response, context); |
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httpexchange.submitResponse(new BasicAsyncResponseProducer(response));
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} |
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private void handleInternal( |
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final HttpRequest request,
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final HttpResponse response,
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final HttpContext context) throws HttpException, IOException { |
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final String method = request.getRequestLine().getMethod().toUpperCase(Locale.ENGLISH); |
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if (!method.equals("GET")) { |
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this.server.log(WARN, "Method not supported, Only GET supported."); |
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throw new MethodNotSupportedException(method + " method not supported"); |
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} |
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final String target = request.getRequestLine().getUri(); |
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final String line = URLDecoder.decode(target, "UTF-8"); |
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final String[] args = StringUtils.split(line, '/'); |
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final int argc = args.length -1; |
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Command command = this.server.getCommand(args[0]); |
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if( command == null) { |
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this.server.log(WARN, "Command '"+line+"' not found."); |
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response.setStatusCode(HttpStatus.SC_NOT_FOUND); |
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final NStringEntity entity = new NStringEntity( |
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"<html><body><h1>Command " + line
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+ " not found</h1></body></html>",
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ContentType.create("text/html", "UTF-8")); |
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response.setEntity(entity); |
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return;
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} |
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if( !command.getNumArgs().contains(argc) ) {
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this.server.log(WARN, "Command '"+line+"', invalid number of arguments."); |
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response.setStatusCode(HttpStatus.SC_BAD_REQUEST); |
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final NStringEntity entity = new NStringEntity( |
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"<html><body><h1>Number of arguments invalid in " + line
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+ "</h1></body></html>",
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ContentType.create("text/html", "UTF-8")); |
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response.setEntity(entity); |
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return;
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} |
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Object ret;
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try {
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ret = command.call(argc, args); |
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} catch(Exception ex) { |
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LOG.warn("Can't server command '"+line+"'.", ex); |
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this.server.log(WARN, "Command '"+line+"', error "+ex.getMessage()+"."); |
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response.setStatusCode(HttpStatus.SC_INTERNAL_SERVER_ERROR); |
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final NStringEntity entity = new NStringEntity( |
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"<html><body><h1>Error processing " + line
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+ "</h1><p>"+ex.toString()+"</p></body></html>", |
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ContentType.create("text/html", "UTF-8")); |
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response.setEntity(entity); |
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return;
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} |
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if( ret == null ) { |
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this.server.log(WARN, "Command '"+line+"' return null."); |
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response.setStatusCode(HttpStatus.SC_INTERNAL_SERVER_ERROR); |
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final NStringEntity entity = new NStringEntity( |
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"<html><body><h1>Process " + line
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+ " return null</h1></body></html>",
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ContentType.create("text/html", "UTF-8")); |
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response.setEntity(entity); |
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return;
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} |
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if( ret instanceof byte[] ) { |
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response.setStatusCode(HttpStatus.SC_OK); |
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final ByteArrayEntity entity = new ByteArrayEntity( |
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(byte[]) ret, |
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ContentType.create(command.getMimeType(), "UTF-8"));
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response.setEntity(entity); |
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this.server.log(INFO, "Command '"+line+"' ok."); |
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return;
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} |
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response.setStatusCode(HttpStatus.SC_OK); |
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final NStringEntity entity = new NStringEntity( |
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ret.toString(), |
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ContentType.create(command.getMimeType(), "UTF-8"));
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response.setEntity(entity); |
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this.server.log(INFO, "Command '"+line+"' ok."); |
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} |
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} |