fr.pilato.elasticsearch.tools.SettingsReader.java Source code

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Here is the source code for fr.pilato.elasticsearch.tools.SettingsReader.java

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/*
 * Licensed to David Pilato (the "Author") under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Author licenses this
 * file to you 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 fr.pilato.elasticsearch.tools;

import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.InputStream;

public class SettingsReader {

    private static final Logger logger = LoggerFactory.getLogger(SettingsReader.class);

    /**
     * Read a file content from the classpath
     * @param file filename
     */
    public static String readFileFromClasspath(String file) {
        logger.trace("Reading file [{}]...", file);
        String content = null;

        try (InputStream asStream = SettingsReader.class.getClassLoader().getResourceAsStream(file)) {
            if (asStream == null) {
                logger.trace("Can not find [{}] in class loader.", file);
                return null;
            }
            content = IOUtils.toString(asStream, "UTF-8");
        } catch (IOException e) {
            logger.warn("Can not read [{}].", file);
        }

        return content;
    }
}