Visual FoxPro

Upload File to Google Cloud Storage

See more Google Cloud Storage Examples

Demonstrates how to upload a file to Google Cloud Storage. Visual FoxPro

LOCAL lnSuccess
LOCAL loJsonToken
LOCAL loHttp
LOCAL loSbPath
LOCAL lnNumReplaced
LOCAL loReq
LOCAL loResp
LOCAL lnResponseCode

lnSuccess = 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"

loJsonToken = CreateObject('Chilkat.JsonObject')
lnSuccess = loJsonToken.LoadFile("qa_data/tokens/googleCloudStorage.json")
IF (lnSuccess = 0) THEN
    ? loJsonToken.LastErrorText
    RELEASE loJsonToken
    CANCEL
ENDIF

*  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]"

loHttp = CreateObject('Chilkat.Http')
loHttp.AuthToken = loJsonToken.StringOf("access_token")

loSbPath = CreateObject('Chilkat.StringBuilder')
loSbPath.Append("/upload/storage/v1/b/bucket_name/o?uploadType=media&name=object_name")
lnNumReplaced = loSbPath.Replace("bucket_name","chilkat-bucket-b")
lnNumReplaced = loSbPath.Replace("object_name","penguins.jpg")

loReq = CreateObject('Chilkat.HttpRequest')
loReq.HttpVerb = "POST"
loReq.Path = loSbPath.GetAsString()
loReq.ContentType = "image/jpeg"
*  Indicate the file to be streamed in the request body when the HTTP POST is sent.
loReq.StreamBodyFromFile("qa_data/jpg/penguins.jpg")

loResp = CreateObject('Chilkat.HttpResponse')
lnSuccess = loHttp.HttpSReq("www.googleapis.com",443,1,loReq,loResp)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loJsonToken
    RELEASE loHttp
    RELEASE loSbPath
    RELEASE loReq
    RELEASE loResp
    CANCEL
ENDIF

lnResponseCode = loResp.StatusCode
IF (lnResponseCode = 401) THEN
    ? loResp.BodyStr
    ? "If invalid credentials, then it is likely the access token expired."
    ? "Your app should automatically fetch a new access token and re-try."
    RELEASE loJsonToken
    RELEASE loHttp
    RELEASE loSbPath
    RELEASE loReq
    RELEASE loResp
    CANCEL
ENDIF

? "Response code: " + STR(lnResponseCode)
? "Response body"
? loResp.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="
*  }

RELEASE loJsonToken
RELEASE loHttp
RELEASE loSbPath
RELEASE loReq
RELEASE loResp