Package io.druid.cli

Source Code of io.druid.cli.RouterJettyServerInitializer

/*
* Druid - a distributed column store.
* Copyright (C) 2012, 2013  Metamarkets Group Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

package io.druid.cli;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.servlet.GuiceFilter;
import com.metamx.emitter.service.ServiceEmitter;
import io.druid.guice.annotations.Json;
import io.druid.guice.annotations.Smile;
import io.druid.server.AsyncQueryForwardingServlet;
import io.druid.server.initialization.JettyServerInitializer;
import io.druid.server.log.RequestLogger;
import io.druid.server.router.QueryHostFinder;
import io.druid.server.router.Router;
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.DefaultHandler;
import org.eclipse.jetty.server.handler.HandlerList;
import org.eclipse.jetty.servlet.DefaultServlet;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.servlets.AsyncGzipFilter;

/**
*/
public class RouterJettyServerInitializer implements JettyServerInitializer
{
  private final ObjectMapper jsonMapper;
  private final ObjectMapper smileMapper;
  private final QueryHostFinder hostFinder;
  private final HttpClient httpClient;
  private final ServiceEmitter emitter;
  private final RequestLogger requestLogger;

  @Inject
  public RouterJettyServerInitializer(
      @Json ObjectMapper jsonMapper,
      @Smile ObjectMapper smileMapper,
      QueryHostFinder hostFinder,
      @Router HttpClient httpClient,
      ServiceEmitter emitter,
      RequestLogger requestLogger
  )
  {
    this.jsonMapper = jsonMapper;
    this.smileMapper = smileMapper;
    this.hostFinder = hostFinder;
    this.httpClient = httpClient;
    this.emitter = emitter;
    this.requestLogger = requestLogger;
  }

  @Override
  public void initialize(Server server, Injector injector)
  {
    final ServletContextHandler queries = new ServletContextHandler(ServletContextHandler.SESSIONS);
    queries.addServlet(
        new ServletHolder(
            new AsyncQueryForwardingServlet(
                jsonMapper,
                smileMapper,
                hostFinder,
                httpClient,
                emitter,
                requestLogger
            )
        ), "/druid/v2/*"
    );
    queries.addFilter(AsyncGzipFilter.class, "/druid/v2/*", null);
    queries.addFilter(GuiceFilter.class, "/status/*", null);

    final ServletContextHandler root = new ServletContextHandler(ServletContextHandler.SESSIONS);
    root.addServlet(new ServletHolder(new DefaultServlet()), "/*");
    root.addFilter(GuiceFilter.class, "/*", null);

    final HandlerList handlerList = new HandlerList();
    handlerList.setHandlers(new Handler[]{queries, root, new DefaultHandler()});
    server.setHandler(handlerList);
  }
}
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