(Objective-C) Google Cloud Storage: Update Object Metadata

See more Google Cloud Storage Examples

Demonstrates how to update (edit) the metadata associated with an object in a Google Cloud Storage bucket.

For more information, see https://cloud.google.com/storage/docs/viewing-editing-metadata#edit

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#import <CkoHttp.h>
#import <CkoBinData.h>
#import <CkoHttpResponse.h>
#import <CkoStringBuilder.h>
#import <CkoJsonObject.h>

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

CkoHttp *http = [[CkoHttp alloc] init];
BOOL success;

// Implements the following CURL command:

// curl -X PATCH --data-binary @JSON_FILE_NAME \
//   -H "Authorization: Bearer OAUTH2_TOKEN" \
//   -H "Content-Type: application/json" \
//   "https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME"

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

CkoBinData *bdRequestBody = [[CkoBinData alloc] init];
success = [bdRequestBody LoadFile: @"JSON_FILE_PATH"];
if (success != YES) {
    NSLog(@"%@",@"Failed to load JSON_FILE_PATH");
    return;
}

// Adds the "Authorization: Bearer OAUTH2_TOKEN" header.
http.AuthToken = @"OAUTH2_TOKEN";

CkoHttpResponse *resp = [http PBinaryBd: @"PATCH" url: @"https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME" data: bdRequestBody contentType: @"application/json" md5: NO gzip: NO];
if (http.LastMethodSuccess == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
[resp GetBodySb: sbResponseBody];

CkoJsonObject *jResp = [[CkoJsonObject alloc] init];
[jResp LoadSb: sbResponseBody];
jResp.EmitCompact = NO;

NSLog(@"%@",@"Response Body:");
NSLog(@"%@",[jResp Emit]);

int respStatusCode = [resp.StatusCode intValue];
NSLog(@"%@%d",@"Response Status Code = ",respStatusCode);
if (respStatusCode >= 400) {
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",resp.Header);
    NSLog(@"%@",@"Failed.");

    return;
}