co.signal.loadgen.LoadGeneratorBeanInfo.java Source code

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Here is the source code for co.signal.loadgen.LoadGeneratorBeanInfo.java

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/*
 * Copyright 2014 Signal.
 *
 * 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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 co.signal.loadgen;

import java.beans.PropertyDescriptor;
import java.io.IOException;
import java.util.List;

import com.google.common.base.Throwables;
import com.google.common.collect.Iterables;

import org.apache.jmeter.testbeans.BeanInfoSupport;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.jorphan.reflect.ClassFinder;
import org.apache.log.Logger;

/**
 * Creates the fields for the {@link LoadGenerator} GUI in JMeter.
 *
 * @author codyaray
 * @since 6/30/14
 */
public class LoadGeneratorBeanInfo extends BeanInfoSupport {

    private static final Logger log = LoggingManager.getLoggerForClass();

    private static final String FILENAME = "fileName";
    private static final String VARIABLE_NAME = "variableName";
    private static final String CLASS_NAME = "className";

    public LoadGeneratorBeanInfo() {
        super(LoadGenerator.class);

        createPropertyGroup("load_generator", new String[] { CLASS_NAME, FILENAME, VARIABLE_NAME });

        List<String> classes = findAvailableImplementations();
        PropertyDescriptor p = property(CLASS_NAME);
        p.setValue(NOT_UNDEFINED, Boolean.TRUE);
        p.setValue(DEFAULT, classes.get(0));
        p.setValue(NOT_EXPRESSION, Boolean.TRUE);
        p.setValue(NOT_OTHER, Boolean.TRUE);
        p.setValue(TAGS, Iterables.toArray(classes, String.class));

        p = property(FILENAME);
        p.setValue(NOT_UNDEFINED, Boolean.TRUE);
        p.setValue(DEFAULT, "");
        p.setValue(NOT_EXPRESSION, Boolean.TRUE);

        p = property(VARIABLE_NAME);
        p.setValue(NOT_UNDEFINED, Boolean.TRUE);
        p.setValue(DEFAULT, "");
        p.setValue(NOT_EXPRESSION, Boolean.TRUE);
    }

    private static List<String> findAvailableImplementations() {
        try {
            return ClassFinder.findClassesThatExtend(JMeterUtils.getSearchPaths(),
                    new Class[] { SyntheticLoadGenerator.class });
        } catch (IOException e) {
            log.fatalError("Exception finding SyntheticLoadGenerator implementations", e);
            throw Throwables.propagate(e);
        }
    }
}