com.arcbees.plugin.template.util.FetchProperties.java Source code

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Here is the source code for com.arcbees.plugin.template.util.FetchProperties.java

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/**
 * Copyright 2013 ArcBees Inc.
 *
 * 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 com.arcbees.plugin.template.util;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;

public class FetchProperties {
    public enum Config {
        FILE, REQUIRED, TASKS, OPTIONAL;

        public String toString() {
            return name().toLowerCase();
        }
    }

    private String path;
    private PropertiesConfiguration configuration;

    public FetchProperties(String path) {
        this.path = path;
    }

    /**
     * TODO retry on failures
     * TODO report error
     * @throws MalformedURLException 
     * @throws ConfigurationException 
     */
    public PropertiesConfiguration fetch() throws MalformedURLException, ConfigurationException {
        URL url;
        try {
            url = new URL(path);
        } catch (MalformedURLException e) {
            // TODO
            e.printStackTrace();
            throw e;
        }

        try {
            configuration = new PropertiesConfiguration(url);
        } catch (ConfigurationException e) {
            e.printStackTrace();
            throw e;
        }

        System.out.println(configuration.toString());

        return configuration;
    }

    public PropertiesConfiguration getConfiguration() {
        return configuration;
    }

    public List<String> getFiles() {
        return getList(Config.FILE);
    }

    public List<String> getRequired() {
        return getList(Config.FILE);
    }

    public List<String> getTasks() {
        return getList(Config.TASKS);
    }

    public List<String> getOptional() {
        return getList(Config.OPTIONAL);
    }

    private List<String> getList(Config config) {
        if (configuration == null) {
            System.out.println("Did you fecth... exiting...");
            throw (new NullPointerException());
        }

        String key = config.toString();
        List<Object> objects = configuration.getList(key);

        List<String> strings = new ArrayList<String>();
        for (Object object : objects) {
            if (object != null) {
                strings.add(object.toString());
            }
        }
        return strings;
    }
}