Java

S3 Rename File

See more Amazon S3 (new) Examples

Demonstrates how to rename a file on Amazon S3.

Renaming an object (file) in AWS S3 using the AWS S3 API involves copying the object to a new location with the desired name and then deleting the original object.

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkRest rest = new CkRest();

    // Connect to the Amazon AWS REST server in the desired region.
    boolean bTls = true;
    int port = 443;
    boolean bAutoReconnect = true;
    success = rest.Connect("s3-us-west-2.amazonaws.com",port,bTls,bAutoReconnect);

    // Provide AWS credentials.
    CkAuthAws authAws = new CkAuthAws();
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("s3");

    // This particular bucket is in the Oregon region, as opposed to the US Standard,
    // therefore the Region must be set appropriately.
    // Also note that we connected to "s3-us-west-2.amazonaws.com".
    authAws.put_Region("us-west-2");

    rest.SetAuthAws(authAws);

    // Set the bucket name via the HOST header.
    // In this case, the bucket name is "chilkat.qa".
    // Note that the Host header should use "bucketName.s3.amazonaws.com", not "bucketName.s3-us-west-2.amazonaws.com"
    rest.put_Host("chilkat.qa.s3.amazonaws.com");

    // Copy /images/sea_creatures/starfish.jpg to /images/sea_creatures/starfish3.jpg
    // Notice here that the x-amz-copy-source includes the bucket in the source path,
    // but the target path passed to FullRequestNoBody does NOT contain the bucket (because the bucket
    // was already specified in the Host header).
    rest.AddHeader("x-amz-copy-source","/chilkat.qa/images/sea_creatures/starfish.jpg");

    CkStringBuilder sbResponse = new CkStringBuilder();
    success = rest.FullRequestNoBodySb("PUT","/images/sea_creatures/starfish3.jpg",sbResponse);
    if (success == false) {
        System.out.println(rest.lastErrorText());
        return;
        }

    // When successful, the S3 Storage service will respond with a 200 or 204 response code,
    // with an XML body.  
    if (rest.get_ResponseStatusCode() != 200) {
        // Examine the request/response to see what happened.
        System.out.println("response status code = " + rest.get_ResponseStatusCode());
        System.out.println("response status text = " + rest.responseStatusText());
        System.out.println("response header: " + rest.responseHeader());
        System.out.println("response body: " + sbResponse.getAsString());
        System.out.println("---");
        System.out.println("LastRequestStartLine: " + rest.lastRequestStartLine());
        System.out.println("LastRequestHeader: " + rest.lastRequestHeader());
        }

    System.out.println(sbResponse.getAsString());
    System.out.println("Copy Successful.");

    // --------------------------------------
    // Now we can delete the original file..
    // --------------------------------------

    // We no longer want to send the x-amz-copy-source header.  Remove it.
    rest.RemoveHeader("x-amz-copy-source");

    success = rest.FullRequestNoBodySb("DELETE","/images/sea_creatures/starfish.jpg",sbResponse);
    if (success == false) {
        System.out.println(rest.lastErrorText());
        return;
        }

    // If successfully deleted, the response status code is 204 and the response body text will be empty.
    int statusCode = rest.get_ResponseStatusCode();
    System.out.println("Response status code = " + statusCode);
    System.out.println("Response text = ");
    System.out.println(sbResponse.getAsString());
  }
}