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