PureBasic
PureBasic
Google Cloud Storage List Bucket Objects
See more Google Cloud Storage Examples
List the objects in a Google Cloud Storage bucket.Chilkat PureBasic Downloads
IncludeFile "CkHttpResponse.pb"
IncludeFile "CkHttp.pb"
IncludeFile "CkStringBuilder.pb"
IncludeFile "CkJsonObject.pb"
Procedure ChilkatExample()
success.i = 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..
sbToken.i = CkStringBuilder::ckCreate()
If sbToken.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
CkStringBuilder::ckLoadFile(sbToken,"qa_data/tokens/googleCloudStorageAccessToken.txt","utf-8")
http.i = CkHttp::ckCreate()
If http.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
CkHttp::setCkAuthToken(http, CkStringBuilder::ckGetAsString(sbToken))
; For more info see Cloud Storage Documentation - Objects: list
;
success = CkHttp::ckSetUrlVar(http,"bucket","chilkat-ocean")
success = CkHttp::ckSetUrlVar(http,"PROJECT_NAME","ChilkatCloud")
resp.i = CkHttpResponse::ckCreate()
If resp.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkHttp::ckHttpNoBody(http,"GET","https://www.googleapis.com/storage/v1/b/{$bucket}/o?project={$ChilkatCloud}",resp)
If success = 0
Debug CkHttp::ckLastErrorText(http)
CkStringBuilder::ckDispose(sbToken)
CkHttp::ckDispose(http)
CkHttpResponse::ckDispose(resp)
ProcedureReturn
EndIf
responseCode.i = CkHttpResponse::ckStatusCode(resp)
If responseCode = 401
Debug CkHttpResponse::ckBodyStr(resp)
Debug "If invalid credentials, then it is likely the access token expired."
Debug "Your app should automatically fetch a new access token and re-try."
CkStringBuilder::ckDispose(sbToken)
CkHttp::ckDispose(http)
CkHttpResponse::ckDispose(resp)
ProcedureReturn
EndIf
Debug "Response code: " + Str(responseCode)
Debug "Response body"
json.i = CkJsonObject::ckCreate()
If json.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkJsonObject::ckLoad(json,CkHttpResponse::ckBodyStr(resp))
CkJsonObject::setCkEmitCompact(json, 0)
Debug CkJsonObject::ckEmit(json)
; 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
id.s
selfLink.s
mediaLink.s
name.s
bucket.s
generation.s
metageneration.s
contentType.s
storageClass.s
size.s
md5Hash.s
crc32c.s
etag.s
timeCreated.s
updated.s
timeStorageClassUpdated.s
kind.s = CkJsonObject::ckStringOf(json,"kind")
i.i = 0
count_i.i = CkJsonObject::ckSizeOfArray(json,"items")
While i < count_i
CkJsonObject::setCkI(json, i)
kind = CkJsonObject::ckStringOf(json,"items[i].kind")
id = CkJsonObject::ckStringOf(json,"items[i].id")
selfLink = CkJsonObject::ckStringOf(json,"items[i].selfLink")
mediaLink = CkJsonObject::ckStringOf(json,"items[i].mediaLink")
name = CkJsonObject::ckStringOf(json,"items[i].name")
bucket = CkJsonObject::ckStringOf(json,"items[i].bucket")
generation = CkJsonObject::ckStringOf(json,"items[i].generation")
metageneration = CkJsonObject::ckStringOf(json,"items[i].metageneration")
contentType = CkJsonObject::ckStringOf(json,"items[i].contentType")
storageClass = CkJsonObject::ckStringOf(json,"items[i].storageClass")
size = CkJsonObject::ckStringOf(json,"items[i].size")
md5Hash = CkJsonObject::ckStringOf(json,"items[i].md5Hash")
crc32c = CkJsonObject::ckStringOf(json,"items[i].crc32c")
etag = CkJsonObject::ckStringOf(json,"items[i].etag")
timeCreated = CkJsonObject::ckStringOf(json,"items[i].timeCreated")
updated = CkJsonObject::ckStringOf(json,"items[i].updated")
timeStorageClassUpdated = CkJsonObject::ckStringOf(json,"items[i].timeStorageClassUpdated")
i = i + 1
Wend
CkStringBuilder::ckDispose(sbToken)
CkHttp::ckDispose(http)
CkHttpResponse::ckDispose(resp)
CkJsonObject::ckDispose(json)
ProcedureReturn
EndProcedure