Arquivo da categoria: Amazon S3

How to Make Files Uploaded to S3 Default to Public

  "Version": "2008-10-17",
  "Statement": [{
    "Sid": "AllowPublicRead",
    "Effect": "Allow",
    "Principal": {
      "AWS": "*"
    "Action": [ "s3:GetObject" ],
    "Resource": [ "arn:aws:s3:::MY_BUCKET_NAME/*" ]

Java S3 Upload for Part

import java.util.ArrayList;
import java.util.List;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
public class UploadObjectMPULowLevelAPI {
    public static void main(String[] args) throws IOException {
        String existingBucketName  = "*** Provide-Your-Existing-BucketName ***"; 
        String keyName             = "*** Provide-Key-Name ***";
        String filePath            = "*** Provide-File-Path ***";   
        AmazonS3 s3Client = new AmazonS3Client(new ProfileCredentialsProvider());        
        // Create a list of UploadPartResponse objects. You get one of these
        // for each part upload.
        List<PartETag> partETags = new ArrayList<PartETag>();
        // Step 1: Initialize.
        InitiateMultipartUploadRequest initRequest = new 
             InitiateMultipartUploadRequest(existingBucketName, keyName);
        InitiateMultipartUploadResult initResponse = 
        File file = new File(filePath);
        long contentLength = file.length();
        long partSize = 5242880; // Set part size to 5 MB.
        try {
            // Step 2: Upload parts.
            long filePosition = 0;
            for (int i = 1; filePosition < contentLength; i++) {
                // Last part can be less than 5 MB. Adjust part size.
            	partSize = Math.min(partSize, (contentLength - filePosition));
                // Create request to upload a part.
                UploadPartRequest uploadRequest = new UploadPartRequest()
                // Upload part and add response to our list.
                filePosition += partSize;
            // Step 3: Complete.
            CompleteMultipartUploadRequest compRequest = new 
        } catch (Exception e) {
            s3Client.abortMultipartUpload(new AbortMultipartUploadRequest(
                    existingBucketName, keyName, initResponse.getUploadId()));

Hospedando o seu site no S3 da Amazon

Eu achava que ia ser mais complicado, mas no fim é bem fácil.

Segue um roteiro básico:

1. Acesse o console do S3
2. Clique em Create Bucket
3. Preencha colocando um subdomínio do seu site (www, no meu caso)

e escolha onde quer que ele fique (meu público alvo é o Brasil, então coloquei em São Paulo)
4. Clique no seu bucket (que apareceu à sua esquerda), clique em Properties (no lado direito da tela)
5. Vá para a aba Website, clique em enabled e escolha o seu documento inicial (no meu caso, index.html)

6. Clique em save
7. Agora você precisa configurar o seu subdomínio no DNS. Basta acrescentar um registro CNAME do seu subdomínio apontando para o endpoint que aparece na parte de baixo da aba Website.
8. Depois que o dns se propagar, seu site funcionará no seu subdomínio. O que você pode fazer é subir uma aplicação em algum lugar que redirecione para o seu subdomínio quando alguém acessar o domínio ou usar um site como WWWizer que automaticamente faz isso pra você.

How to Set Up a Private Maven Repository in Amazon S3

Amazon S3 is a perfect place for keeping private Maven artifacts. I assume you keep public artifacts in Maven Central because you want them to be available to everybody. Private artifacts are those you don’t want visible to anyone except members of your team. Thus, you want to deploy your .jarfiles there and make sure they are visible only by your team. Here is how we do this in all our Java projects.

Create an S3 Bucket

First, you create a new S3 bucket. I would recommend you name it using your project domain and a prefix. For example, with repo.teamed.iorepo is a prefix and is the domain.

There’s no need to configure any permissions for this bucket. Just create it through the Amazon S3 console.

Create an IAM User

Create a new IAM user. I recommend you name it like teamed-maven if your project name is teamed.

Add a new “inline policy” to the user:

  "Statement": [
      "Effect": "Allow",
      "Action": "s3:*",
      "Resource": [

Here, is the name of the S3 bucket you created a minute ago.

Make sure you have an “access key” for this new user. It must look similar to this:

secret: t5tZQCwuaRhmlOXfbGE5aTBMFw34iFyxfCEr32av

The key is 20 characters (all caps), and the secret is 40 characters.

Extend settings.xml

Add this configuration to your ~/.m2/settings.xml file:


Configure pom.xml

Add this configuration to pom.xml:


Then, configure S3 Wagon, also in pom.xml:


You’re ready to go. You can deploy your artifacts just by running Maven from the command line:

$ mvn clean deploy


Now you want to see these artifacts in your browser, in a secure mode, by providing secure credentials. I recommend you use, as explained in Basic HTTP Auth for S3 Buckets.

Configure Rultor


Another recommendation is to configure for deployment of your artifacts to S3 automatically.

First, encrypt your settings.xml with this Rultor remote:

$ gem install rultor
$ rultor encrypt -p me/test settings.xml

Instead of me/test, you should use the name of your GitHub project.

As a result, you will get a new file named settings.xml.asc. Add it to the root directory of your project, then commit and push. The file contains your secret information, but only the Rultor server can decrypt it.

Create a .rultor.yml file in the root directory of your project (The Rultor reference page explains this format in greater detail):

  settings.xml: "repo/settings.xml.asc"
  script: |
    mvn clean deploy --settings ../settings.xml

Now it’s time to see how it all works together. Create a new ticket in the GitHub issue tracker and post something like this into it (read more about Rultor commands):

@rultor deploy

You will get a response in a few seconds. The rest will be done by Rultor.

That’s it.