(Visual FoxPro) Upload String to Google Cloud Storage

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

Note: This example requires Chilkat v9.5.0.69 or later because it uses the http.PTextSb method.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loSbToken
LOCAL loHttp
LOCAL loXml
LOCAL loSbXml
LOCAL lcUrl
LOCAL loResp
LOCAL lnResponseCode

* 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..
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbToken = CreateObject('Chilkat.StringBuilder')
loSbToken.LoadFile("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]"

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Http')
loHttp = CreateObject('Chilkat.Http')
loHttp.AuthToken = loSbToken.GetAsString()

* Create an XML document, and write it to a StringBuilder.
* We'll be uploading this XML document.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Xml')
loXml = CreateObject('Chilkat.Xml')
loXml.Tag = "note"
loXml.UpdateChildContent("to","Tove")
loXml.UpdateChildContent("from","Jani")
loXml.UpdateChildContent("heading","Reminder")
loXml.UpdateChildContent("body","Don't forget me this weekend!")

* Write the XML to sbXml.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbXml = CreateObject('Chilkat.StringBuilder')
loXml.GetXmlSb(loSbXml)

* 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.
loHttp.SetUrlVar("bucket_name","chilkat-ocean")
loHttp.SetUrlVar("object_name","test.xml")
lcUrl = "https://www.googleapis.com/upload/storage/v1/b/{$bucket_name}/o?uploadType=media&name={$object_name}"

* Note: The PTextSb method first appears in Chilkat v9.5.0.69
loResp = loHttp.PTextSb("POST",lcUrl,loSbXml,"utf-8","application/xml",0,0)
IF (loHttp.LastMethodSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loSbToken
    RELEASE loHttp
    RELEASE loXml
    RELEASE loSbXml
    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 loResp
    RELEASE loSbToken
    RELEASE loHttp
    RELEASE loXml
    RELEASE loSbXml
    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/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="
* }

RELEASE loResp

RELEASE loSbToken
RELEASE loHttp
RELEASE loXml
RELEASE loSbXml