ExceptionsView.java

package net.johnewart.gearman.server.web;

import net.johnewart.gearman.engine.core.JobManager;
import net.johnewart.gearman.engine.queue.JobQueue;
import net.johnewart.gearman.engine.storage.ExceptionData;
import net.johnewart.gearman.engine.storage.ExceptionStorageEngine;
import net.johnewart.gearman.server.util.JobQueueMonitor;
import net.johnewart.gearman.server.util.JobQueueSnapshot;
import net.johnewart.gearman.server.util.SystemSnapshot;
import org.joda.time.LocalDateTime;

import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

public class ExceptionsView {
    protected final ExceptionStorageEngine exceptionStorageEngine;
    private final int pageSize;
    private final int pageNum;
    private final int exceptionCount;

    public ExceptionsView(ExceptionStorageEngine exceptionStorageEngine, int pageSize, int pageNum)
    {
        this.exceptionStorageEngine = exceptionStorageEngine;
        this.pageSize = pageSize;
        this.pageNum = pageNum;
        this.exceptionCount = exceptionStorageEngine.getCount();
    }

    public int getPageSize() {
        return pageSize;
    }

    public int getPageNum() {
        return pageNum;
    }

    public int getPageCount() {
        return new Double(Math.ceil((double)exceptionCount / (double)pageSize)).intValue();
    }

    public int getNextPageNumber() {
       return pageNum + 1;
    }

    public int getPreviousPageNumber() {
        return pageNum - 1;
    }

    public boolean hasNextPage() {
        return (pageNum * pageSize < exceptionCount);
    }

    public boolean hasPreviousPage() {
        return pageNum > 1;
    }

    public int getExceptionCount() {
        return exceptionCount;
    }

    public int getStart() {
        return ((pageNum - 1) * pageSize) + 1;
    }

    public int getEnd() {
        int end = pageNum * pageSize;
        return end > exceptionCount ? exceptionCount : end;
    }

    public List<ExceptionData> getExceptions()
    {
        return exceptionStorageEngine.getExceptions(pageNum, pageSize);
    }

    public String getJobHandle(ExceptionData data) {
        return data.jobHandle;
    }

    public String getUniqueId(ExceptionData data) {
        return data.uniqueId;
    }

    public String getJobDataString(ExceptionData data) {
        return new String(data.jobData);
    }

    public String getExceptionDataString(ExceptionData data) {
        return new String(data.exceptionData);
    }

    public String getDateTime(ExceptionData data) {
        return data.when.toString();
    }
}