net.nicholaswilliams.java.teamcity.plugin.linux.AbstractLinuxPropertiesLocator.java Source code

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Here is the source code for net.nicholaswilliams.java.teamcity.plugin.linux.AbstractLinuxPropertiesLocator.java

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/*
 * AbstractLinuxPropertiesLocator.java from TeamCityPlugins modified Friday, September 21, 2012 23:48:37 CDT (-0500).
 *
 * Copyright 2010-2012 the original author or authors.
 *
 * 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 net.nicholaswilliams.java.teamcity.plugin.linux;

import com.intellij.openapi.diagnostic.Logger;
import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Hashtable;
import java.util.Map;
import java.util.Properties;

/**
 * An abstract class for locating the Linux properties os.linux.flavor, os.linux.distribution.name and
 * os.linux.distribution.version.
 *
 * @author Nick Williams
 * @version 1.0.0
 * @since 1.0.0
 */
public abstract class AbstractLinuxPropertiesLocator implements LinuxPropertiesLocator {
    private static final Logger logger = Logger
            .getInstance("jetbrains.buildServer.PLUGIN.linuxSystemProperties.COMMON");

    @Override
    public Map<String, String> locateProperties(File pluginRoot) {
        Hashtable<String, String> properties = new Hashtable<String, String>();

        this.determinePluginVersion(pluginRoot, properties);
        this.locateLinuxProperties(properties);

        return properties;
    }

    private void determinePluginVersion(File pluginRoot, Map<String, String> properties) {
        File versionFile = new File(pluginRoot, "version.properties");
        if (versionFile.exists()) {
            if (versionFile.canRead()) {
                Properties versionProperties = new Properties();
                FileInputStream stream = null;
                try {
                    stream = FileUtils.openInputStream(versionFile);
                    versionProperties.load(stream);
                    if (versionProperties.getProperty(LinuxPropertiesLocator.PLUGIN_VERSION_KEY) != null) {
                        properties.put(LinuxPropertiesLocator.PLUGIN_VERSION_KEY,
                                versionProperties.getProperty(LinuxPropertiesLocator.PLUGIN_VERSION_KEY));
                    }
                } catch (IOException e) {
                    AbstractLinuxPropertiesLocator.logger
                            .error("linux-system-properties plugin version file could not be read.", e);
                } finally {
                    try {
                        if (stream != null)
                            stream.close();
                    } catch (IOException e) {
                        AbstractLinuxPropertiesLocator.logger.warn("Unable to close version file after reading.",
                                e);
                    }
                }
            } else {
                AbstractLinuxPropertiesLocator.logger
                        .warn("linux-system-properties plugin version file not readable.");
            }
        } else {
            AbstractLinuxPropertiesLocator.logger.warn("linux-system-properties plugin version file not found.");
        }
    }

    protected abstract void locateLinuxProperties(Map<String, String> properties);
}