AwsS3Uploader.java

package io.evercam.connect.helper;

import android.content.Context;
import android.os.AsyncTask;
import android.os.Environment;
import android.util.Log;

import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.PutObjectRequest;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * AwsS3Uploader
 * <p/>
 * Upload user data to AWS s3
 */

public class AwsS3Uploader
{
    private AmazonS3Client s3Client;
    private PutObjectRequest putObjectRequest;
    private final static String SUFFIX_TXT = ".txt";

    public AwsS3Uploader(String title, String content, Context ctxt)
    {
        String accessKey = new PropertyReader(ctxt).getPropertyStr(PropertyReader.KEY_ACCESS_KEY);
        String secretKey = new PropertyReader(ctxt).getPropertyStr(PropertyReader.KEY_SECRET_KEY);
        s3Client = new AmazonS3Client(new BasicAWSCredentials(accessKey, secretKey));

        s3Client.setRegion(Region.getRegion(Regions.EU_WEST_1));

        S3PutObjectTask task = new S3PutObjectTask();
        task.title = title;
        task.content = content;

        task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);

    }

    private class S3PutObjectTask extends AsyncTask<Void, Void, Void>
    {

        String title = null;
        String content = null;

        @Override
        protected Void doInBackground(Void... params)
        {
            File file = new File(Environment.getExternalStorageDirectory() + File.separator +
                    title + SUFFIX_TXT);
            try
            {
                file.createNewFile();
                if(file.exists())
                {
                    OutputStream outputStream = new FileOutputStream(file);
                    outputStream.write(content.getBytes());
                    outputStream.close();
                    try
                    {
                        putObjectRequest = new PutObjectRequest("evercamconnect-userdata", title
                                + SUFFIX_TXT, file);
                        s3Client.putObject(putObjectRequest);
                    }
                    catch(Exception e)
                    {
                        Log.e("evercamconnect", "Error while upload to S3" + e.toString());
                    }
                }
            }
            catch(IOException e)
            {
                e.printStackTrace();
            }

            file.delete();
            return null;
        }

    }
}