com.qwazr.search.index.BackupStatus.java Source code

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Here is the source code for com.qwazr.search.index.BackupStatus.java

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/**
 * Copyright 2015-2016 Emmanuel Keller / QWAZR
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.qwazr.search.index;

import com.fasterxml.jackson.annotation.JsonInclude;
import org.apache.commons.io.filefilter.FileFileFilter;

import java.io.File;
import java.io.FileFilter;
import java.util.Date;

@JsonInclude(JsonInclude.Include.NON_EMPTY)
public class BackupStatus {

    final public Long generation;
    final public Date date;
    final public Long bytes_size;
    final public Integer files_count;

    public BackupStatus() {
        generation = null;
        date = null;
        bytes_size = null;
        files_count = null;
    }

    BackupStatus(Long generation, long date, Long bytes_size, Integer files_count) {
        this.generation = generation;
        this.date = new Date(date);
        this.bytes_size = bytes_size;
        this.files_count = files_count;
    }

    final static BackupStatus newBackupStatus(File backupDir) {
        if (backupDir == null)
            return null;
        try {
            long generation = Long.parseLong(backupDir.getName());
            File[] files = backupDir.listFiles((FileFilter) FileFileFilter.FILE);
            long bytes_size = 0;
            if (files == null)
                return null;
            for (File file : files)
                bytes_size += file.length();
            return new BackupStatus(generation, backupDir.lastModified(), bytes_size, files.length);
        } catch (NumberFormatException e) {
            return null;
        }
    }

    private static final boolean equalsNull(Object o1, Object o2) {
        if (o1 == null)
            return o2 == null;
        if (o2 == null)
            return false;
        return o1.equals(o2);
    }

    public int hashCode() {
        assert false;
        return 42;
    }

    public boolean equals(Object o) {
        if (o == null)
            return false;
        if (!(o instanceof BackupStatus))
            return false;
        BackupStatus s = (BackupStatus) o;
        if (!equalsNull(generation, s.generation))
            return false;
        if (!equalsNull(date, s.date))
            return false;
        if (!equalsNull(bytes_size, s.bytes_size))
            return false;
        return equalsNull(bytes_size, s.bytes_size);
    }

}