com.logsniffer.web.controller.sniffer.SnifferStatusController.java Source code

Introduction

Here is the source code for com.logsniffer.web.controller.sniffer.SnifferStatusController.java

Source

/*******************************************************************************
 * logsniffer, open source tool for viewing, monitoring and analysing log data.
 * Copyright (c) 2015 Scaleborn UG, www.scaleborn.com
 *
 * logsniffer 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 3 of the License, or
 * (at your option) any later version.
 *
 * logsniffer 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, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package com.logsniffer.web.controller.sniffer;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;

import org.quartz.SchedulerException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import com.logsniffer.event.IncrementData;
import com.logsniffer.event.Sniffer;
import com.logsniffer.model.Log;
import com.logsniffer.model.LogPointer;
import com.logsniffer.model.LogRawAccess;
import com.logsniffer.model.LogSource;
import com.logsniffer.web.ViewController;
import com.logsniffer.web.controller.exception.ResourceNotFoundException;

/**
 * Controller for sniffer state and scheduling issues.
 * 
 * @author mbok
 * 
 */
@ViewController
public class SnifferStatusController extends SniffersBaseController {
    private static Logger logger = LoggerFactory.getLogger(SnifferStatusController.class);

    public static class LogSniffingStatus {
        private final long currentOffset;
        private final long logSize;
        private final Log log;
        private final LogPointer currentPointer;

        public LogSniffingStatus(final Log log, final LogPointer currentPointer, final long currentOffset,
                final long logSize) {
            super();
            this.logSize = logSize;
            this.currentPointer = currentPointer;
            this.log = log;
            this.currentOffset = currentOffset;
        }

        /**
         * @return the logSize
         */
        public long getLogSize() {
            return logSize;
        }

        /**
         * @return the log
         */
        public Log getLog() {
            return log;
        }

        /**
         * @return the currentOffset
         */
        public long getCurrentOffset() {
            return currentOffset;
        }

        /**
         * @return the currentPointer
         */
        public LogPointer getCurrentPointer() {
            return currentPointer;
        }

    }

    @RequestMapping(value = "/sniffers/{snifferId}/status", method = RequestMethod.GET)
    String showState(@PathVariable("snifferId") final long snifferId, final Model model)
            throws ResourceNotFoundException, SchedulerException, IOException, InterruptedException,
            ExecutionException {
        final Sniffer activeSniffer = getAndBindActiveSniffer(model, snifferId);
        final LogSource<?> logSource = getLogSource(activeSniffer.getLogSourceId());
        final Map<Log, IncrementData> logsIncData = snifferPersistence.getIncrementDataByLog(activeSniffer,
                logSource);
        final List<LogSniffingStatus> logsStatus = new ArrayList<LogSniffingStatus>();
        for (final Log log : logsIncData.keySet()) {
            final LogRawAccess<?> logAccess = logSource.getLogAccess(log);
            final IncrementData incData = logsIncData.get(log);
            LogPointer currentPointer = null;
            long currentOffset = 0;
            if (incData.getNextOffset() != null) {
                currentPointer = logAccess.refresh(logAccess.getFromJSON(incData.getNextOffset().getJson())).get();
            }
            if (currentPointer != null) {
                currentOffset = Math.abs(logAccess.getDifference(null, currentPointer));
            }
            logsStatus.add(new LogSniffingStatus(log, currentPointer, currentOffset, log.getSize()));
        }
        model.addAttribute("scheduleInfo", snifferScheduler.getScheduleInfo(snifferId));
        model.addAttribute("logsStatus", logsStatus);
        model.addAttribute("source", logSource);
        return "sniffers/status";
    }

    @RequestMapping(value = "/sniffers/{snifferId}/stopForm", method = RequestMethod.POST)
    String stop(@PathVariable("snifferId") final long snifferId, final Model model,
            final RedirectAttributes redirectAttrs) throws ResourceNotFoundException, SchedulerException {
        logger.info("Stopping sniffer: {}", snifferId);
        final Sniffer activeSniffer = getAndBindActiveSniffer(model, snifferId);
        snifferScheduler.stopSniffing(activeSniffer.getId());
        logger.info("Stopped sniffer: {}", snifferId);
        redirectAttrs.addFlashAttribute("stopped", true);
        return "redirect:status";
    }
}