Objective-C

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.

Objective-C

#import <CkoRest.h>
#import <CkoAuthAws.h>
#import <CkoStringBuilder.h>

BOOL success = NO;

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

CkoRest *rest = [[CkoRest alloc] init];

// Connect to the Amazon AWS REST server in the desired region.
BOOL bTls = YES;
int port = 443;
BOOL bAutoReconnect = YES;
success = [rest Connect: @"s3-us-west-2.amazonaws.com" port: [NSNumber numberWithInt: port] tls: bTls autoReconnect: bAutoReconnect];

// Provide AWS credentials.
CkoAuthAws *authAws = [[CkoAuthAws alloc] init];
authAws.AccessKey = @"AWS_ACCESS_KEY";
authAws.SecretKey = @"AWS_SECRET_KEY";
authAws.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.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.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" value: @"/chilkat.qa/images/sea_creatures/starfish.jpg"];

CkoStringBuilder *sbResponse = [[CkoStringBuilder alloc] init];
success = [rest FullRequestNoBodySb: @"PUT" uriPath: @"/images/sea_creatures/starfish3.jpg" sb: sbResponse];
if (success == NO) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// When successful, the S3 Storage service will respond with a 200 or 204 response code,
// with an XML body.  
if ([rest.ResponseStatusCode intValue] != 200) {
    // Examine the request/response to see what happened.
    NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
    NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
    NSLog(@"%@%@",@"response body: ",[sbResponse GetAsString]);
    NSLog(@"%@",@"---");
    NSLog(@"%@%@",@"LastRequestStartLine: ",rest.LastRequestStartLine);
    NSLog(@"%@%@",@"LastRequestHeader: ",rest.LastRequestHeader);
}

NSLog(@"%@",[sbResponse GetAsString]);
NSLog(@"%@",@"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" uriPath: @"/images/sea_creatures/starfish.jpg" sb: sbResponse];
if (success == NO) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// If successfully deleted, the response status code is 204 and the response body text will be empty.
int statusCode = [rest.ResponseStatusCode intValue];
NSLog(@"%@%d",@"Response status code = ",statusCode);
NSLog(@"%@",@"Response text = ");
NSLog(@"%@",[sbResponse GetAsString]);