upload to google cloud storage signed url with javascript

Question

With the following code I\'m able to upload to my publicly writable bucket in google cloud storage. (allUsers has write permission). However If the bucket isn\'t publicly writab

Answer 1

I was implementing the same issue. The problem is with SignedURL. After correcting the signedurl the upload worked like a charm.

As I was using php. Below is the code for generating signed urls.

private function createSignedUrl($objectName, $bucketName, $key, $serviceEmailAddress, $method = 'GET', $duration = 600)
{
    $expires = time() + $duration;

// Line breaks are important!
$toSign = (
    $method . "\n" .
    /* Content-MD5 */ "\n" .
    /* Content Type */ "\n" .
    $expires . "\n" .
    $objectName
);
$signature = urlencode(base64_encode(JWT::encode($toSign, $key, 'HS256')));
return array(
    'expires' => $expires,
    'accessid' => $serviceEmailAddress,
    'signature' => $signature,
);
}

Answer 2

Use https://storage.googleapis.com as a host to compose the URL that points to the desired resource. You can choose between a few ways to construct your base URL. Here are some possible combinations.

For reference, you can also check out a very simple snippet Python that could be helpful.

Hope it helps.