edu.cornell.mannlib.vitro.webapp.application.BuildProperties.java Source code

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Here is the source code for edu.cornell.mannlib.vitro.webapp.application.BuildProperties.java

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/* $This file is distributed under the terms of the license in /doc/license.txt$ */

package edu.cornell.mannlib.vitro.webapp.application;

import java.io.IOException;
import java.io.InputStream;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import javax.servlet.ServletContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Obtains and provides the contents of the build.properties file.
 */
public class BuildProperties {
    private static final Log log = LogFactory.getLog(BuildProperties.class);

    /** Path to the file of build properties baked into the webapp. */
    public static final String WEBAPP_PATH_BUILD_PROPERTIES = "/WEB-INF/resources/build.properties";

    private final Map<String, String> propertyMap;

    public BuildProperties(ServletContext ctx) {
        Map<String, String> map = new HashMap<>();

        try (InputStream stream = ctx.getResourceAsStream(WEBAPP_PATH_BUILD_PROPERTIES)) {
            if (stream == null) {
                log.debug("Didn't find a resource at '" + WEBAPP_PATH_BUILD_PROPERTIES + "'.");
            } else {
                Properties props = new Properties();
                props.load(stream);
                for (String key : props.stringPropertyNames()) {
                    map.put(key, props.getProperty(key));
                }
            }
        } catch (IOException e) {
            throw new RuntimeException("Failed to load from '" + WEBAPP_PATH_BUILD_PROPERTIES + "'.", e);
        }
        propertyMap = Collections.unmodifiableMap(map);
    }

    public Map<String, String> getMap() {
        return this.propertyMap;
    }

}