com.eviware.loadui.util.testevents.TestEventSourceSupport.java Source code

Introduction

Here is the source code for com.eviware.loadui.util.testevents.TestEventSourceSupport.java

Source

/*
 * Copyright 2013 SmartBear Software
 * 
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by the European Commission - subsequent
 * versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * 
 * http://ec.europa.eu/idabc/eupl
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the Licence is
 * distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the Licence for the specific language governing permissions and limitations
 * under the Licence.
 */
package com.eviware.loadui.util.testevents;

import java.util.Arrays;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.DigestUtils;

import com.google.common.base.Objects;

/**
 * Support class for generating a unique hash String to be used by
 * TestEvent.Sources, based on a label and arbitrary data.
 * 
 * @author dain.nilsson
 */
public class TestEventSourceSupport {
    private String label;
    private byte[] data = new byte[0];
    private String hash;

    public TestEventSourceSupport(String label, byte[] data) {
        this.label = label;
        setData(data);
    }

    public String getLabel() {
        return label;
    }

    public void setLabel(String newLabel) {
        if (!Objects.equal(label, newLabel)) {
            label = newLabel;
            updateHash();
        }
    }

    public byte[] getData() {
        byte[] dataCopy = new byte[data.length];
        System.arraycopy(data, 0, dataCopy, 0, data.length);

        return dataCopy;
    }

    public final void setData(byte[] newData) {
        if (!Arrays.equals(data, newData)) {
            data = new byte[newData.length];
            System.arraycopy(newData, 0, data, 0, newData.length);
            updateHash();
        }
    }

    private void updateHash() {
        byte[] labelBytes = label.getBytes();
        byte[] combined = new byte[labelBytes.length + data.length];
        System.arraycopy(labelBytes, 0, combined, 0, labelBytes.length);
        System.arraycopy(data, 0, combined, labelBytes.length, data.length);

        hash = Base64.encodeBase64String(DigestUtils.md5(combined));
    }

    public String getHash() {
        return hash;
    }
}