(Perl) Google Drive - Resumable Upload

Demonstrates how to do a resumable upload to Google Drive.

For more information, see https://developers.google.com/drive/api/v3/manage-uploads#resumable

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$success = 1;

# This example uses a previously obtained access token having permission for the 
# Google Drive scope. 
# See Get Google Drive OAuth2 Access Token

$http = chilkat::CkHttp->new();

$http->put_AuthToken("GOOGLE_DRIVE_ACCESS_TOKEN");

# First we want to initiate the resumable upload.
# We send a POST to get a session URI, which will be used to upload the file, and resume if needed.

# Our POST will look like this:

# POST https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable HTTP/1.1
# Authorization: Bearer [YOUR_AUTH_TOKEN]          <-- Chilkat automatically adds this header because the AuthToken property was set.
# Content-Length: 38                               <-- Chilkat will automatically add this header.
# Content-Type: application/json; charset=UTF-8    <-- This is the type of this POST, and is specified in the call to PostJson3.
# X-Upload-Content-Type: application/zip           <-- The type of file we'll be uploading
# X-Upload-Content-Length: 1366807                 <-- The size of the file we'll be uploading
# 
# {
#   "name": "myObject"
# }

$http->SetRequestHeader("X-Upload-Content-Type","application/zip");
$http->SetRequestHeader("X-Upload-Content-Length","1366807");

$json = chilkat::CkJsonObject->new();
$json->UpdateString("name","myZip");

# resp is a HttpResponse
$resp = $http->PostJson3("https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable","application/json",$json);
if ($http->get_LastMethodSuccess() == 0) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

$statusCode = $resp->get_StatusCode();
if ($statusCode != 200) {
    print $resp->bodyStr() . "\r\n";
    print "response status = " . $statusCode . "\r\n";
    exit;
}

# The session URI is in the "Location" response header:
$sbSessionUri = chilkat::CkStringBuilder->new();
$sbSessionUri->Append($resp->getHeaderField("Location"));
$sessionUri = $sbSessionUri->getAsString();
print "Session URI: " . $sessionUri . "\r\n";

# Here's a sample session URI:  https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable&upload_id=AEnB2UrszR8lDqlo3mtXJw_0rYI_Hi1oVh1NPFcLfoyBq9NcSjk85kFopoZaVEgT38OSmLl0XsObPf4iCSJwHlrOvvIJQ_ckIQ

# -----------------------------------------------------------------------------
# The next step is to upload the file using the session URI:

# We'll send a PUT that looks like this:

# PUT https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable&upload_id=xa298sd_sdlkj2 HTTP/1.1
# Content-Length: 1366807
# Content-Type: application/zip
# 
# [BYTES 0-1366806]

# First remove the X-Upload-Content-Type and X-Upload-Content-Length request headers we specified earlier, so they don't get sent with subsequent requests.
$http->ClearHeaders();

# Because the file is likely large, we'll use SynchronousRequest which allows to to pass an HTTP request object where the body can be streamed directly from a file.
$req = chilkat::CkHttpRequest->new();

$req->put_ContentType("application/zip");
$req->put_HttpVerb("PUT");

$url = chilkat::CkUrl->new();
$url->ParseUrl($sessionUri);

$req->put_Path($url->pathWithQueryParams());
print "Path with Query Param: " . $url->pathWithQueryParams() . "\r\n";

# Specify that the request body is to be streamed directly from a file.
$success = $req->StreamBodyFromFile("qa_data/zips/big.zip");
if ($success == 0) {
    print $req->lastErrorText() . "\r\n";
    exit;
}

# resp is a HttpResponse
$resp = $http->SynchronousRequest($url->host(),$url->get_Port(),$url->get_Ssl(),$req);
if ($http->get_LastMethodSuccess() == 0) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

print $resp->bodyStr() . "\r\n";
print "response status = " . $statusCode . "\r\n";

# Sample output:

# {
#  "kind": "drive#file",
#  "id": "1rx20i53eurtkVQ-RT7Ry8Ct85PgPYMET",
#  "name": "myZip",
#  "mimeType": "application/zip"
# }
# 
# response status = 200