Tcl Requires Chilkat v11.0.0+
Upload String to Google Cloud Storage

Demonstrates how to upload an in-memory string to Google Cloud Storage.
Chilkat Tcl Downloads

Tcl

load ./chilkat.dll

set success 0

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

#  This example uses a previously obtained access token having permission for the 
#  scope "https://www.googleapis.com/auth/cloud-platform"

#  In this example, Get Google Cloud Storage OAuth2 Access Token, 
#  the service account access token was saved to a text file.  This example fetches the access token from the file..
set sbToken [new_CkStringBuilder]

CkStringBuilder_LoadFile $sbToken "qa_data/tokens/googleCloudStorageAccessToken.txt" "utf-8"

#  Send a POST equivalent to this curl command.
#  The content of the file is contained in the request body.

#  curl -X POST --data-binary @[OBJECT] \
#      -H "Authorization: Bearer [OAUTH2_TOKEN]" \
#      -H "Content-Type: [OBJECT_CONTENT_TYPE]" \
#      "https://www.googleapis.com/upload/storage/v1/b/[BUCKET_NAME]/o?uploadType=media&name=[OBJECT_NAME]"

set http [new_CkHttp]

CkHttp_put_AuthToken $http [CkStringBuilder_getAsString $sbToken]

#  Create an XML document, and write it to a StringBuilder.
#  We'll be uploading this XML document.
set xml [new_CkXml]

CkXml_put_Tag $xml "note"
CkXml_UpdateChildContent $xml "to" "Tove"
CkXml_UpdateChildContent $xml "from" "Jani"
CkXml_UpdateChildContent $xml "heading" "Reminder"
CkXml_UpdateChildContent $xml "body" "Don't forget me this weekend!"

#  Write the XML to sbXml.
set sbXml [new_CkStringBuilder]

CkXml_GetXmlSb $xml $sbXml

#  sbXml contains this:

#  <note>
#      <to>Tove</to>
#      <from>Jani</from>
#      <heading>Reminder</heading>
#      <body>Don't forget me this weekend!</body>
#  </note>

#  Construct a URL to upload to an object named "test.xml" in the "chilkat-ocean" bucket.
CkHttp_SetUrlVar $http "bucket_name" "chilkat-ocean"
CkHttp_SetUrlVar $http "object_name" "test.xml"
set url "https://www.googleapis.com/upload/storage/v1/b/{$bucket_name}/o?uploadType=media&name={$object_name}"

set resp [new_CkHttpResponse]

set success [CkHttp_HttpSb $http "POST" $url $sbXml "utf-8" "application/xml" $resp]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkStringBuilder $sbToken
    delete_CkHttp $http
    delete_CkXml $xml
    delete_CkStringBuilder $sbXml
    delete_CkHttpResponse $resp
    exit
}

set responseCode [CkHttpResponse_get_StatusCode $resp]
if {$responseCode == 401} then {
    puts [CkHttpResponse_bodyStr $resp]
    puts "If invalid credentials, then it is likely the access token expired."
    puts "Your app should automatically fetch a new access token and re-try."
    delete_CkStringBuilder $sbToken
    delete_CkHttp $http
    delete_CkXml $xml
    delete_CkStringBuilder $sbXml
    delete_CkHttpResponse $resp
    exit
}

puts "Response code: $responseCode"
puts "Response body"
puts [CkHttpResponse_bodyStr $resp]

#  A successful response looks like this:
#  Response code: 200
#  Response body
#  {
#   "kind": "storage#object",
#   "id": "chilkat-ocean/test.xml/1502669565429870",
#   "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/test.xml",
#   "name": "test.xml",
#   "bucket": "chilkat-ocean",
#   "generation": "1502669565429870",
#   "metageneration": "1",
#   "contentType": "application/xml",
#   "timeCreated": "2017-08-14T00:12:45.379Z",
#   "updated": "2017-08-14T00:12:45.379Z",
#   "storageClass": "MULTI_REGIONAL",
#   "timeStorageClassUpdated": "2017-08-14T00:12:45.379Z",
#   "size": "181",
#   "md5Hash": "TCR0L7TWsw2TzOvfNvgEfA==",
#   "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/test.xml?generation=1502669565429870&alt=media",
#   "crc32c": "ZFd5sA==",
#   "etag": "CO6Qpq241dUCEAE="
#  }

delete_CkStringBuilder $sbToken
delete_CkHttp $http
delete_CkXml $xml
delete_CkStringBuilder $sbXml
delete_CkHttpResponse $resp