// /xml.queues/indexing_p.java
// -------------------------------
// part of the AnomicHTTPD caching proxy
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004, 2005
// last major change: 28.10.2005
// this file is contributed by Alexander Schier
//
// 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// Using this software in any meaning (reading, learning, copying, compiling,
// running) means that you agree that the Author(s) is (are) not responsible
// for cost, loss of data or any harm that may be caused directly or indirectly
// by usage of this softare or this documentation. The usage of this software
// is on your own risk. The installation and usage (starting/running) of this
// software may allow other people or application to access your computer and
// any attached devices and is highly dependent on the configuration of the
// software which must be done by the user of the software; the author(s) is
// (are) also not responsible for proper configuration and usage of the
// software, even if provoked by documentation provided together with
// the software.
//
// Any changes to this file according to the GPL as documented in the file
// gpl.txt aside this file in the shipment you received can be done to the
// lines that follows this copyright notice here, but changes must not be
// done inside the copyright notive above. A re-distribution must contain
// the intact and unchanged copyright notice.
// Contributions and changes to the program code must be marked as such.

// You must compile this file with
// javac -classpath .:../classes IndexCreate_p.java
// if the shell's current path is HTROOT

//package xml.queues;
package xml;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Locale;

import de.anomic.data.wikiCode;
import de.anomic.http.httpHeader;
import de.anomic.plasma.plasmaCrawlLoaderMessage;
import de.anomic.plasma.plasmaCrawlNURL;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.plasma.plasmaSwitchboardQueue;
import de.anomic.plasma.crawler.http.CrawlWorker;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacySeed;

public class queues_p {
    
    private static SimpleDateFormat dayFormatter = new SimpleDateFormat("yyyy/MM/dd", Locale.US);
    private static String daydate(Date date) {
        if (date == null) return "";
        return dayFormatter.format(date);
    }
    
    public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
        // return variable that accumulates replacements
        plasmaSwitchboard switchboard = (plasmaSwitchboard) env;
        //wikiCode wikiTransformer = new wikiCode(switchboard);
        serverObjects prop = new serverObjects();
        prop.put("rejected", 0);
        //int showRejectedCount = 10;
        
        yacySeed initiator;
        
        //indexing queue
        prop.put("indexingSize", Integer.toString(switchboard.getThread("80_indexing").getJobCount()+switchboard.indexingTasksInProcess.size()));
        prop.put("indexingMax", Integer.toString(plasmaSwitchboard.indexingSlots));
        if ((switchboard.sbQueue.size() == 0) && (switchboard.indexingTasksInProcess.size() == 0)) {
            prop.put("list", 0); //is empty
        } else {
            plasmaSwitchboardQueue.Entry pcentry;
            int inProcessCount = 0;
            long totalSize = 0;
            int i=0; //counter
            try {
                ArrayList entryList = new ArrayList();
                
                // getting all entries that are currently in process
                synchronized (switchboard.indexingTasksInProcess) {
                    inProcessCount = switchboard.indexingTasksInProcess.size();
                    entryList.addAll(switchboard.indexingTasksInProcess.values());
                }
                
                // getting all enqueued entries
                if ((switchboard.sbQueue.size() > 0)) {
                    entryList.addAll(switchboard.sbQueue.list(0));
                }
                int size=10;
                if (post!= null) size = post.getInt("num", 10);
                
                if(size>entryList.size()){
                    size=entryList.size();
                }
                
                for (i = 0; i < size; i++) {
                    boolean inProcess = i < inProcessCount;
                    pcentry = (plasmaSwitchboardQueue.Entry) entryList.get(i);
                    long entrySize = pcentry.size();
                    totalSize += entrySize;
                    if ((pcentry != null)&&(pcentry.url() != null)) {
                        initiator = yacyCore.seedDB.getConnected(pcentry.initiator());
                        prop.putNoHTML("list-indexing_"+i+"_initiator", ((initiator == null) ? "proxy" : wikiCode.replaceHTML(initiator.getName())));
                        prop.put("list-indexing_"+i+"_depth", pcentry.depth());
                        prop.put("list-indexing_"+i+"_modified", pcentry.getModificationDate());
                        prop.putNoHTML("list-indexing_"+i+"_anchor", (pcentry.anchorName()==null)?"":wikiCode.replaceHTML(pcentry.anchorName()));
                        prop.putNoHTML("list-indexing_"+i+"_url", pcentry.normalizedURLString());
                        prop.put("list-indexing_"+i+"_size", entrySize);
                        prop.put("list-indexing_"+i+"_inProcess", (inProcess)?1:0);
                        prop.put("list-indexing_"+i+"_hash", pcentry.urlHash());
                    }
                }
                prop.put("list-indexing", i);
            } catch (IOException e) {}
        }
        
        //loader queue
        prop.put("loaderSize", Integer.toString(switchboard.cacheLoader.size()));        
        prop.put("loaderMax", Integer.toString(plasmaSwitchboard.crawlSlots));
        if (switchboard.cacheLoader.size() == 0) {
            prop.put("list-loader", 0);
        } else {
            ThreadGroup loaderThreads = switchboard.cacheLoader.threadStatus();            
            int threadCount  = loaderThreads.activeCount();
            Thread[] threadList = new Thread[threadCount*2];
            threadCount = loaderThreads.enumerate(threadList);
            int size=10;
            if(threadCount<size){
                size=threadCount;
            }
            int i, count = 0;
            for (i = 0; i < size; i++)  {
                CrawlWorker theWorker = (CrawlWorker)threadList[i];
                plasmaCrawlLoaderMessage theMsg = theWorker.theMsg;
                if (theMsg == null) continue;
                
                initiator = yacyCore.seedDB.getConnected(theMsg.initiator);
                prop.putNoHTML("list-loader_"+count+"_initiator", ((initiator == null) ? "proxy" : initiator.getName()));
                prop.put("list-loader_"+count+"_depth", theMsg.depth );
                prop.putNoHTML("list-loader_"+count+"_url", theMsg.url.toString()); // null pointer exception here !!! maybe url = null; check reason.
                count++;
            }
            prop.put("list-loader", count );
        }
        
        //local crawl queue
        prop.put("localCrawlSize", Integer.toString(switchboard.getThread("50_localcrawl").getJobCount()));
        int stackSize = switchboard.urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE);
        addNTable(prop, "list-local", switchboard.urlPool.noticeURL.top(plasmaCrawlNURL.STACK_TYPE_CORE, Math.min(10, stackSize)));
        
        //global crawl queue
        prop.put("remoteCrawlSize", Integer.toString(switchboard.getThread("61_globalcrawltrigger").getJobCount()));
        //prop.put("remoteCrawlSize", Integer.toString(switchboard.getThread("62_remotetriggeredcrawl").getJobCount()));
        stackSize = switchboard.urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_LIMIT);
        if (stackSize == 0) {
            prop.put("list-remote", 0);
        } else {
            addNTable(prop, "list-remote", switchboard.urlPool.noticeURL.top(plasmaCrawlNURL.STACK_TYPE_LIMIT, Math.min(10, stackSize)));
        }

        // return rewrite properties
        return prop;
    }
    
    
    public static final void addNTable(serverObjects prop, String tableName, plasmaCrawlNURL.Entry[] crawlerList) {

        int showNum = 0;
        plasmaCrawlNURL.Entry urle;
        yacySeed initiator;
        for (int i = 0; i < crawlerList.length; i++) {
            urle = crawlerList[i];
            if ((urle != null) && (urle.url() != null)) {
                initiator = yacyCore.seedDB.getConnected(urle.initiator());
                prop.put(tableName + "_" + showNum + "_initiator", ((initiator == null) ? "proxy" : initiator.getName()));
                prop.put(tableName + "_" + showNum + "_depth", urle.depth());
                prop.put(tableName + "_" + showNum + "_modified", daydate(urle.loaddate()));
                prop.putNoHTML(tableName + "_" + showNum + "_anchor", urle.name());
                prop.putNoHTML(tableName + "_" + showNum + "_url", urle.url().toString());
                prop.put(tableName + "_" + showNum + "_hash", urle.hash());
                showNum++;
            }
        }
        prop.put(tableName, showNum);

    }
}