(Objective-C) S3 Add Tags to an Object

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Demonstrates how to add one or more tags to an S3 object.

For more information, see https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObjectTagging.html

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

// 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.
// (for us-east-1, we use "s3.amazonaws.com", but for another region, such as us-west-2, we would use "s3-us-west-2.amazonaws.com")
BOOL bTls = YES;
int port = 443;
BOOL bAutoReconnect = YES;
BOOL success = [rest Connect: @"s3.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";
authAws.Region = @"us-east-1";

[rest SetAuthAws: authAws];

// Set the bucket name via the HOST header.
// In this case, the bucket name is "chilkat100".
// Note that the Host header should use "bucketName.s3.amazonaws.com", not "bucketName.s3-us-east-1.amazonaws.com"
// The same applies to aother regions.  The Host header should simply be <bucketName>.s3.amazonaws.com regardless of the region.
rest.Host = @"chilkat100.s3.amazonaws.com";

CkoXml *xml = [[CkoXml alloc] init];
xml.Tag = @"Tagging";
[xml UpdateChildContent: @"TagSet|Tag|Key" value: @"plant"];
[xml UpdateChildContent: @"TagSet|Tag|Value" value: @"chili pepper"];

CkoStringBuilder *sbRequestBody = [[CkoStringBuilder alloc] init];
[xml GetXmlSb: sbRequestBody];

// It is important to add the terminating "=" after the "?tagging".
CkoStringBuilder *sbResponse = [[CkoStringBuilder alloc] init];
success = [rest FullRequestSb: @"PUT" uriPath: @"/chiliPepper.gif?tagging=" requestBody: sbRequestBody responseBody: sbResponse];
if (success == NO) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

NSLog(@"%@%d",@"Response status code: ",[rest.ResponseStatusCode intValue]);

// When successful, the S3 Storage service will respond with a 200 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(@"%@",@"Success.");