Classic ASP
Google Cloud Storage List Bucket Objects

List the objects in a Google Cloud Storage bucket.
Chilkat Classic ASP Downloads

Classic ASP
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<%
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 = Server.CreateObject("Chilkat.StringBuilder")
success = sbToken.LoadFile("qa_data/tokens/googleCloudStorageAccessToken.txt","utf-8")

set http = Server.CreateObject("Chilkat.Http")
http.AuthToken = sbToken.GetAsString()

' For more info see Cloud Storage Documentation - Objects: list 
' 
success = http.SetUrlVar("bucket","chilkat-ocean")
success = http.SetUrlVar("PROJECT_NAME","ChilkatCloud")

set resp = Server.CreateObject("Chilkat.HttpResponse")
success = http.HttpNoBody("GET","https://www.googleapis.com/storage/v1/b/{$bucket}/o?project={$ChilkatCloud}",resp)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

responseCode = resp.StatusCode
If (responseCode = 401) Then
    Response.Write "<pre>" & Server.HTMLEncode( resp.BodyStr) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "If invalid credentials, then it is likely the access token expired.") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Your app should automatically fetch a new access token and re-try.") & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Response code: " & responseCode) & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( "Response body") & "</pre>"

set json = Server.CreateObject("Chilkat.JsonObject")
success = json.Load(resp.BodyStr)

json.EmitCompact = 0

Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>"

' A response code = 200 indicates success, and the response body contains JSON such as this:

' {
'   "kind": "storage#objects",
'   "items": [
'     {
'       "kind": "storage#object",
'       "id": "chilkat-ocean/file with space char.jpg/1555776690752366",
'       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/file%20with%20space%20char.jpg",
'       "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/file%20with%20space%20char.jpg?generation=1555776690752366&alt=media",
'       "name": "file with space char.jpg",
'       "bucket": "chilkat-ocean",
'       "generation": "1555776690752366",
'       "metageneration": "1",
'       "contentType": "image/jpeg",
'       "storageClass": "MULTI_REGIONAL",
'       "size": "6229",
'       "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
'       "crc32c": "9RjgwQ==",
'       "etag": "CO6WguiH3+ECEAE=",
'       "timeCreated": "2019-04-20T16:11:30.752Z",
'       "updated": "2019-04-20T16:11:30.752Z",
'       "timeStorageClassUpdated": "2019-04-20T16:11:30.752Z"
'     },
'     {
'       "kind": "storage#object",
' 
'       "id": "chilkat-ocean/penguins.jpg/1555775749593296",
'       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/penguins.jpg",
'       "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/penguins.jpg?generation=1555775749593296&alt=media",
'       "name": "penguins.jpg",
'       "bucket": "chilkat-ocean",
'       "generation": "1555775749593296",
'       "metageneration": "1",
'       "contentType": "image/jpeg",
'       "storageClass": "MULTI_REGIONAL",
'       "size": "777835",
'       "md5Hash": "nTd7EM53jEk4s8fixjoimg==",
'       "crc32c": "ixxYVw==",
'       "etag": "CNCxnqeE3+ECEAE=",
'       "timeCreated": "2019-04-20T15:55:49.593Z",
'       "updated": "2019-04-20T15:55:49.593Z",
'       "timeStorageClassUpdated": "2019-04-20T15:55:49.593Z"
'     },
'     {
'       "kind": "storage#object",
'       "id": "chilkat-ocean/starfish.jpg/1628958192639968",
'       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg",
'       "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/starfish.jpg?generation=1628958192639968&alt=media",
'       "name": "starfish.jpg",
'       "bucket": "chilkat-ocean",
'       "generation": "1628958192639968",
'       "metageneration": "1",
'       "contentType": "image/jpeg",
'       "storageClass": "MULTI_REGIONAL",
'       "size": "6229",
'       "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
'       "crc32c": "9RjgwQ==",
'       "etag": "COC/tJP2sPICEAE=",
'       "timeCreated": "2021-08-14T16:23:12.660Z",
'       "updated": "2021-08-14T16:23:12.660Z",
'       "timeStorageClassUpdated": "2021-08-14T16:23:12.660Z"
'     }
'   ]
' }

' Use this online tool to generate parsing code from sample JSON: 
' Generate Parsing Code from JSON

kind = json.StringOf("kind")
i = 0
count_i = json.SizeOfArray("items")
Do While i < count_i
    json.I = i
    kind = json.StringOf("items[i].kind")
    id = json.StringOf("items[i].id")
    selfLink = json.StringOf("items[i].selfLink")
    mediaLink = json.StringOf("items[i].mediaLink")
    name = json.StringOf("items[i].name")
    bucket = json.StringOf("items[i].bucket")
    generation = json.StringOf("items[i].generation")
    metageneration = json.StringOf("items[i].metageneration")
    contentType = json.StringOf("items[i].contentType")
    storageClass = json.StringOf("items[i].storageClass")
    size = json.StringOf("items[i].size")
    md5Hash = json.StringOf("items[i].md5Hash")
    crc32c = json.StringOf("items[i].crc32c")
    etag = json.StringOf("items[i].etag")
    timeCreated = json.StringOf("items[i].timeCreated")
    updated = json.StringOf("items[i].updated")
    timeStorageClassUpdated = json.StringOf("items[i].timeStorageClassUpdated")
    i = i + 1
Loop

%>
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