com.ipcglobal.awscdh.util.Utils.java Source code

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Here is the source code for com.ipcglobal.awscdh.util.Utils.java

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/**
 *    Copyright 2015 IPC Global (http://www.ipc-global.com) and others.
 * 
 *    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.ipcglobal.awscdh.util;

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

import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
import com.amazonaws.auth.InstanceProfileCredentialsProvider;
import com.amazonaws.auth.PropertiesFileCredentialsProvider;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;

/**
 * The Class Utils.
 */
public class Utils {

    /** The Constant log. */
    private static final Log log = LogFactory.getLog(Utils.class);

    /**
     * Inits the credentials.
     *
     * @return the AWS credentials provider
     */
    public static AWSCredentialsProvider initCredentials() {
        // Get credentials from IMDS. If unsuccessful, get them from the
        // credential profiles file.
        AWSCredentialsProvider credentialsProvider = null;
        try {
            credentialsProvider = new DefaultAWSCredentialsProviderChain();
            // Verify we can fetch credentials from the provider
            credentialsProvider.getCredentials();
            //log.info("Obtained credentials from DefaultAWSCredentialsProviderChain.");
        } catch (AmazonClientException e) {
            log.error("Unable to obtain credentials from DefaultAWSCredentialsProviderChain", e);
        }
        return credentialsProvider;
    }

    /**
     * Inits the credentials.
     *
     * @param credentialsFileName
     *            the credentials file name
     * @return the AWS credentials provider
     */
    public static AWSCredentialsProvider initCredentials(String credentialsFileName) {
        // Get credentials from IMDS. If unsuccessful, get them from the
        // credential profiles file.
        AWSCredentialsProvider credentialsProvider = null;
        try {
            credentialsProvider = new InstanceProfileCredentialsProvider();
            // Verify we can fetch credentials from the provider
            credentialsProvider.getCredentials();
            log.info("Obtained credentials from the IMDS.");
        } catch (AmazonClientException e) {
            log.warn("Unable to obtain credentials from the IMDS, trying credentialsFileName");
            // If the credentialsFileName contains a path, assume it contains
            // the entire drive:/path/name.ext
            // this is necessary when running as a service on Windows
            String credentialsPathNameExt = null;
            // safest to check for both
            if (credentialsFileName.indexOf("/") > -1 || credentialsFileName.indexOf("\\") > -1)
                credentialsPathNameExt = credentialsFileName;
            else
                credentialsPathNameExt = System.getProperty("user.home") + System.getProperty("file.separator")
                        + ".aws" + System.getProperty("file.separator") + credentialsFileName;
            credentialsProvider = new PropertiesFileCredentialsProvider(credentialsPathNameExt);
            log.info("Obtained credentials from the credentialsFileName file.");
        }
        return credentialsProvider;
    }

    /**
     * Inits the profile credentials provider.
     *
     * @param profileName the profile name
     * @return the AWS credentials provider
     * @throws Exception the exception
     */
    public static AWSCredentialsProvider initProfileCredentialsProvider(String profileName) throws Exception {
        // Get credentials from the ~/.aws/credentials file
        AWSCredentialsProvider credentialsProvider = null;
        try {
            credentialsProvider = new ProfileCredentialsProvider(profileName);
            // Verify we can fetch credentials from the provider
            credentialsProvider.getCredentials();
        } catch (AmazonClientException e) {
            log.error("Unable to obtain credentials from ProfileCredentialsProvider, profileName=" + profileName);
            throw e;
        }
        return credentialsProvider;
    }

    /**
     * Convert m secs to h mm ss.
     *
     * @param msecs the msecs
     * @return the string
     */
    public static String convertMSecsToHMmSs(long msecs) {
        return convertSecsToHMmSs(msecs / 1000L);
    }

    /**
     * Convert secs to h mm ss.
     *
     * @param seconds the seconds
     * @return the string
     */
    public static String convertSecsToHMmSs(long seconds) {
        long s = seconds % 60;
        long m = (seconds / 60) % 60;
        long h = (seconds / (60 * 60)) % 24;
        return String.format("%02d:%02d:%02d", h, m, s);
    }

}