hadoop jetty的应用
private HttpServer infoServer = null;...
private void startInfoServer(Configuration conf) throws IOException {
// create a servlet to serve full-file content
InetSocketAddress infoSocAddr = DataNode.getInfoAddr(conf);
String infoHost = infoSocAddr.getHostName();
int tmpInfoPort = infoSocAddr.getPort();
this.infoServer = (secureResources == null)
? new HttpServer("datanode", infoHost, tmpInfoPort, tmpInfoPort == 0,
conf, new AccessControlList(conf.get(DFS_ADMIN, " ")))
: new HttpServer("datanode", infoHost, tmpInfoPort, tmpInfoPort == 0,
conf, new AccessControlList(conf.get(DFS_ADMIN, " ")),
secureResources.getListener());
LOG.info("Opened info server at " + infoHost + ":" + tmpInfoPort);
.....
this.infoServer.addInternalServlet(null, "/streamFile/*", StreamFile.class); //添加datanode专属的servlet
this.infoServer.addInternalServlet(null, "/getFileChecksum/*",
FileChecksumServlets.GetServlet.class);
this.infoServer.setAttribute("datanode", this);
this.infoServer.setAttribute(JspHelper.CURRENT_CONF, conf);
this.infoServer.addServlet(null, "/blockScannerReport",
DataBlockScanner.Servlet.class);
if (WebHdfsFileSystem.isEnabled(conf, LOG)) {
infoServer.addJerseyResourcePackage(DatanodeWebHdfsMethods.class
.getPackage().getName() + ";" + Param.class.getPackage().getName(),
WebHdfsFileSystem.PATH_PREFIX + "/*");
}
this.infoServer.start();
}
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