org.jdamico.s3.components.S3Component.java Source code

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Here is the source code for org.jdamico.s3.components.S3Component.java

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/***********************************************************************************************************************
 *
 * s3-batch-uploader - https://github.com/damico/s3-batch-uploader
 * ==========================================
 *
 * Copyright (C) 2015 by JOSE RICARDO DE OLIVEIRA DAMICO
 *
 ***********************************************************************************************************************
 *
 * 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.
 *
 ***********************************************************************************************************************
 *
 * JOSE RICARDO DE OLIVEIRA DAMICO (jd.comment@gmail.com)
 *
 **********************************************************************************************************************/

package org.jdamico.s3.components;

import java.io.File;

import org.jdamico.s3.commons.TopLevelException;
import org.jdamico.s3.commons.Utils;
import org.jdamico.s3.entities.AppProperties;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.AmazonS3Exception;
import com.amazonaws.services.s3.model.GetObjectRequest;
import com.amazonaws.services.s3.model.ObjectMetadata;
import com.amazonaws.services.s3.model.PutObjectRequest;
import com.amazonaws.services.s3.model.S3Object;

public class S3Component {

    private static S3Component INSTANCE = null;

    private S3Component() {
    }

    public AmazonS3Client getS3Client(AppProperties appProperties) {
        AWSCredentials credentials = new BasicAWSCredentials(appProperties.getAws_access_key_id(),
                appProperties.getAws_secret_access_key());
        return new AmazonS3Client(credentials);
    }

    public static S3Component getInstance() {
        if (INSTANCE == null)
            INSTANCE = new S3Component();
        return INSTANCE;
    }

    public void upload(AppProperties appProperties, File uploadFile, String keyName) throws TopLevelException {
        AmazonS3 s3client = getS3Client(appProperties);
        try {

            Utils.getInstance().handleVerboseLog(appProperties, 'i', "Uploading a new object to S3 from a file\n");
            s3client.putObject(new PutObjectRequest(appProperties.getBucketnName(), keyName, uploadFile));

        } catch (AmazonServiceException ase) {
            Utils.getInstance().handleVerboseLog(appProperties, 'e',
                    "Caught an AmazonServiceException, which " + "means your request made it "
                            + "to Amazon S3, but was rejected with an error response" + " for some reason.");
            Utils.getInstance().handleVerboseLog(appProperties, 'e', "Error Message:    " + ase.getMessage());
            Utils.getInstance().handleVerboseLog(appProperties, 'e', "HTTP Status Code: " + ase.getStatusCode());
            Utils.getInstance().handleVerboseLog(appProperties, 'e', "AWS Error Code:   " + ase.getErrorCode());
            Utils.getInstance().handleVerboseLog(appProperties, 'e', "Error Type:       " + ase.getErrorType());
            Utils.getInstance().handleVerboseLog(appProperties, 'e', "Request ID:       " + ase.getRequestId());

            throw new TopLevelException(appProperties, ase);

        } catch (AmazonClientException ace) {
            throw new TopLevelException(appProperties,
                    "Caught an AmazonClientException, which " + "means the client encountered "
                            + "an internal error while trying to " + "communicate with S3, "
                            + "such as not being able to access the network. Error Message: " + ace.getMessage());

        }
    }

    public boolean isValidFile(AppProperties appProperties, String keyName) throws TopLevelException {

        AmazonS3 s3client = getS3Client(appProperties);

        boolean isValidFile = true;
        try {

            S3Object object = s3client.getObject(new GetObjectRequest(appProperties.getBucketnName(), keyName));
            ObjectMetadata objectMetadata = object.getObjectMetadata();
        } catch (AmazonS3Exception s3e) {
            if (s3e.getStatusCode() == 404) {
                isValidFile = false;
            } else {
                throw new TopLevelException(appProperties, s3e);
            }
        }

        return isValidFile;
    }

}