com.kirana.utils.GeneratePresignedUrlAndUploadObject.java Source code

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Here is the source code for com.kirana.utils.GeneratePresignedUrlAndUploadObject.java

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package com.kirana.utils;

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.HttpMethod;
import com.amazonaws.SDKGlobalConfiguration;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSCredentialsProviderChain;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.auth.profile.ProfilesConfigFile;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest;

public class GeneratePresignedUrlAndUploadObject {
    private static String bucketName = "kirana-services";
    private static String objectKey = "test";

    public static void main(String[] args) throws IOException {

        System.setProperty(SDKGlobalConfiguration.ENABLE_S3_SIGV4_SYSTEM_PROPERTY, "true");
        System.setProperty(SDKGlobalConfiguration.ACCESS_KEY_ENV_VAR, "AKIAJ666LALJZHA6THGQ");
        System.setProperty(SDKGlobalConfiguration.SECRET_KEY_ENV_VAR, "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");
        //      AmazonS3 s3client = new AmazonS3Client(new ProfileCredentialsProvider("kirana"));

        ProfilesConfigFile profile = new ProfilesConfigFile("AwsCredentials.properties");
        AmazonS3 s3client = new AmazonS3Client(new ProfileCredentialsProvider());
        s3client.setRegion(Region.getRegion(Regions.AP_SOUTHEAST_1));

        try {
            System.out.println("Generating pre-signed URL.");
            java.util.Date expiration = new java.util.Date();
            long milliSeconds = expiration.getTime();
            milliSeconds += 1000 * 60 * 60; // Add 1 hour.
            expiration.setTime(milliSeconds);

            GeneratePresignedUrlRequest generatePresignedUrlRequest = new GeneratePresignedUrlRequest(bucketName,
                    objectKey);
            generatePresignedUrlRequest.setMethod(HttpMethod.PUT);
            generatePresignedUrlRequest.setExpiration(expiration);

            //                        s3client.putObject(bucketName, objectKey, null);

            URL url = s3client.generatePresignedUrl(generatePresignedUrlRequest);
            UploadObject(url);

            System.out.println("Pre-Signed URL = " + url.toString());
        } catch (AmazonServiceException exception) {
            System.out.println("Caught an AmazonServiceException, " + "which means your request made it "
                    + "to Amazon S3, but was rejected with an error response " + "for some reason.");
            System.out.println("Error Message: " + exception.getMessage());
            System.out.println("HTTP  Code: " + exception.getStatusCode());
            System.out.println("AWS Error Code:" + exception.getErrorCode());
            System.out.println("Error Type:    " + exception.getErrorType());
            System.out.println("Request ID:    " + exception.getRequestId());
        } catch (AmazonClientException ace) {
            System.out.println("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.");
            System.out.println("Error Message: " + ace.getMessage());
        }
    }

    public static void UploadObject(URL url) throws IOException {
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoOutput(true);
        connection.setRequestMethod("PUT");
        OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());
        out.write("This text uploaded as object.");
        out.close();
        int responseCode = connection.getResponseCode();
        System.out.println("Service returned response code " + responseCode);

    }
}