(VB.NET) Upload File to Google Cloud Storage

See more Google Cloud Storage Examples

Demonstrates how to upload a file to Google Cloud Storage.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' 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"

Dim jsonToken As New Chilkat.JsonObject
Dim success As Boolean = jsonToken.LoadFile("qa_data/tokens/googleCloudStorage.json")
If (success = False) Then
    Debug.WriteLine(jsonToken.LastErrorText)
    Exit Sub
End If



' 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]"

Dim http As New Chilkat.Http
http.AuthToken = jsonToken.StringOf("access_token")

Dim sbPath As New Chilkat.StringBuilder
sbPath.Append("/upload/storage/v1/b/bucket_name/o?uploadType=media&name=object_name")
Dim numReplaced As Integer = sbPath.Replace("bucket_name","chilkat-ocean")
numReplaced = sbPath.Replace("object_name","penguins.jpg")

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.Path = sbPath.GetAsString()
req.ContentType = "image/jpeg"
' Indicate the file to be streamed in the request body when the HTTP POST is sent.
req.StreamBodyFromFile("qa_data/jpg/penguins.jpg")

Dim resp As Chilkat.HttpResponse = http.SynchronousRequest("www.googleapis.com",443,True,req)
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim responseCode As Integer = resp.StatusCode
If (responseCode = 401) Then
    Debug.WriteLine(resp.BodyStr)
    Debug.WriteLine("If invalid credentials, then it is likely the access token expired.")
    Debug.WriteLine("Your app should automatically fetch a new access token and re-try.")

    Exit Sub
End If


Debug.WriteLine("Response code: " & responseCode)
Debug.WriteLine("Response body")
Debug.WriteLine(resp.BodyStr)

' A successful response looks like this:
' Response code: 200
' Response body
' {
'  "kind": "storage#object",
'  "id": "chilkat-ocean/penguins.jpg/1502643657837855",
'  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/penguins.jpg",
'  "name": "penguins.jpg",
'  "bucket": "chilkat-ocean",
'  "generation": "1502643657837855",
'  "metageneration": "1",
'  "contentType": "image/jpeg",
'  "timeCreated": "2017-08-13T17:00:57.811Z",
'  "updated": "2017-08-13T17:00:57.811Z",
'  "storageClass": "MULTI_REGIONAL",
'  "timeStorageClassUpdated": "2017-08-13T17:00:57.811Z",
'  "size": "777835",
'  "md5Hash": "nTd7EM53jEk4s8fixjoimg==",
'  "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/penguins.jpg?generation=1502643657837855&alt=media",
'  "crc32c": "ixxYVw==",
'  "etag": "CJ+azOvX1NUCEAE="
' }