com.infinities.skyport.util.PemLoader.java Source code

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Here is the source code for com.infinities.skyport.util.PemLoader.java

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/*******************************************************************************
 * Copyright 2015 InfinitiesSoft Solutions 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.infinities.skyport.util;

import java.io.File;
import java.io.IOException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.base.Charsets;
import com.google.common.io.FileWriteMode;
import com.google.common.io.Files;

public class PemLoader {

    private static final Logger logger = LoggerFactory.getLogger(PemLoader.class);
    private static final String PEM_TXT = ".pem.txt";
    private static final String PEM = ".pem";
    private String defaultDirectory;

    public PemLoader(String defaultDirectory) {
        this.defaultDirectory = defaultDirectory;
    }

    public String readPem(String keypairName) throws IOException {
        String fileLocation = keypairName;
        File file = new File(fileLocation);
        if (!file.exists()) {
            fileLocation = defaultDirectory + keypairName + PEM;
            file = new File(fileLocation);
            if (!file.exists()) {
                fileLocation = defaultDirectory + keypairName + PEM_TXT;
                file = new File(fileLocation);
                if (!file.exists()) {
                    throw new IllegalArgumentException("invalid keypairName: " + keypairName);
                }
            }
        }
        logger.info("pem loaded from: {}", fileLocation);
        return Files.asCharSource(new File(fileLocation), Charsets.US_ASCII).read();
    }

    public void savePem(String directory, String keypairName, String privateKey) throws IOException {
        String fileLocation = directory + keypairName + PEM;
        logger.info("pem loaded from: {}", fileLocation);
        Files.asCharSink(new File(fileLocation), Charsets.US_ASCII, FileWriteMode.APPEND).write(privateKey);
    }

    public void savePem(String keypairName, String privateKey) throws IOException {
        this.savePem(defaultDirectory, keypairName, privateKey);
    }
}