Simple update a text content in Google Cloud Storage - php

Question

I'm a new user of Google Cloud Storage, so bear with me.
I'm trying to create a file editor, that gets a non-binary file from GCS, and saves it back.
I'm using google-api-php-client. I've been experimenting a lot using the API, browsed, but I just couldn't find the proper answer.
<?php
class GCS_Driver {
/** #var Google_Service_Storage $driver */
public $driver;
/** #var string $bucket */
public $bucket;
public function updateObject($objectPath,$content) {
$updated = false;
try {
$postBody = new Google_Service_Storage_StorageObject();
$updated = $this->driver->objects->patch($this->bucket,$objectPath,$postBody,array(
'data' => $content // I know this is wrong, I am just showing the idea I am looking for to overwrite the content
));
} catch (Exception $ex) {
// error log
return false;
}
if (!$updated) {
// error log
return false;
}
return true;
}
}
Any hint will be appreciated.

Answer 1

I figured out the work around.
Basically, just save a temp file, and upload it to overwrite the existing
Here's the code.
<?php
class GCS_Driver {
/** #var Google_Client $client */
public $client;
/** #var Google_Service_Storage $driver */
public $driver;
/** #var string $bucket */
public $bucket;
public function updateObject($objectPath,$content) {
$updated = false;
try {
$temp = tempnam(sys_get_temp_dir(), 'gcs');
$handle = fopen($temp, "r+b");
fwrite($handle, $content);
fseek($handle, 0);
$postBody = new Google_Service_Storage_StorageObject();
$postBody->setName($objectPath);
$postBody->setUpdated(date("c"));
$postBody->setGeneration(time());
$size = #filesize($temp);
$postBody->setSize($size);
$ext = #pathinfo($objectPath,PATHINFO_EXTENSION);
$ext = strtolower($ext);
$mimeType = $this->getContentType($ext);
$postBody->setContentType($mimeType);
$chunkSizeBytes = 1 * 1024 * 1024;
$this->client->setDefer(true);
$request = $this->driver->objects->insert($this->bucket,$postBody,array(
'name' => $objectPath,
'predefinedAcl' => 'publicRead',
'projection' => 'full',
));
$media = new Google_Http_MediaFileUpload(
$this->client,
$request,
$mimeType,
null,
true,
$chunkSizeBytes
);
$media->setFileSize($size);
$status = false;
while (!$status && !feof($handle)) {
$chunk = fread($handle, $chunkSizeBytes);
$status = $media->nextChunk($chunk);
}
fclose($handle);
unlink($temp);
if ($status) {
$updated = true;
}
} catch (Exception $ex) {
// error log
return false;
}
if (!$updated) {
// error log
return false;
}
// action log
return true;
}
}
Any new feedback is welcome.