(Objective-C) Amazon Glacier Remove Tags from Vault

Demonstrates how to remove one or more tags from the set of tags attached to a vault.

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#import <CkoRest.h>
#import <CkoAuthAws.h>
#import <CkoJsonObject.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.
BOOL bTls = YES;
int port = 443;
BOOL bAutoReconnect = YES;
BOOL success = [rest Connect: @"glacier.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 = @"glacier";
authAws.Region = @"us-west-2";

success = [rest SetAuthAws: authAws];

// --------------------------------------------------------------------------
// Note: The above REST connection and setup of the AWS credentials
// can be done once.  After connecting, any number of REST calls can be made.
// The "auto reconnect" property passed to rest.Connect indicates that if
// the connection is lost, a REST method call will automatically reconnect
// if needed.
// --------------------------------------------------------------------------

// 
// For more information, see Glacier Remove Tags from Vault Reference Documentation
// 
[rest AddHeader: @"x-amz-glacier-version" value: @"2012-06-01"];

// Create the JSON indicating the tags to be removed:
// Use this online tool to generate the code from sample JSON: 
// Generate Code to Create JSON

// {
//    "TagKeys": [
//       "tagName1",
//       "tagName2"
//    ]
// }

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"TagKeys[0]" value: @"tagName1"];
[json UpdateString: @"TagKeys[1]" value: @"tagName2"];
// ...
// ...

CkoStringBuilder *sbRequestBody = [[CkoStringBuilder alloc] init];
[json EmitSb: sbRequestBody];

// Add tags to the vault named "chilkat"
CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
success = [rest FullRequestSb: @"POST" uriPath: @"/AWS_ACCOUNT_ID/vaults/chilkat/tags?operation=remove" requestBody: sbRequestBody responseBody: sbResponseBody];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

int respStatusCode = [rest.ResponseStatusCode intValue];
if (respStatusCode >= 400) {
    NSLog(@"%@%d",@"Response Status Code = ",respStatusCode);
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",rest.ResponseHeader);
    NSLog(@"%@",@"Response Body:");
    NSLog(@"%@",[sbResponseBody GetAsString]);
    return;
}

// Success is indicated by a 204 response status with an empty response body.
NSLog(@"%@%d",@"response status code = ",respStatusCode);