(SQL Server) Google Cloud Storage List Bucket Objects

See more Google Cloud Storage Examples

List the objects in a Google Cloud Storage bucket.

For more information, see https://cloud.google.com/storage/docs/json_api/v1/objects/list

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- 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..
    DECLARE @sbToken int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbToken OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int
    EXEC sp_OAMethod @sbToken, 'LoadFile', @success OUT, 'qa_data/tokens/googleCloudStorageAccessToken.txt', 'utf-8'

    DECLARE @http int
    -- Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT

    EXEC sp_OAMethod @sbToken, 'GetAsString', @sTmp0 OUT
    EXEC sp_OASetProperty @http, 'AuthToken', @sTmp0

    -- For more info see Cloud Storage Documentation - Objects: list 
    -- 
    DECLARE @success int
    EXEC sp_OAMethod @http, 'SetUrlVar', @success OUT, 'bucket', 'chilkat-ocean'
    EXEC sp_OAMethod @http, 'SetUrlVar', @success OUT, 'PROJECT_NAME', 'ChilkatCloud'

    DECLARE @resp int
    EXEC sp_OAMethod @http, 'QuickGetObj', @resp OUT, 'https://www.googleapis.com/storage/v1/b/{$bucket}/o?project={$ChilkatCloud}'
    EXEC sp_OAGetProperty @http, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sbToken
        EXEC @hr = sp_OADestroy @http
        RETURN
      END

    DECLARE @responseCode int
    EXEC sp_OAGetProperty @resp, 'StatusCode', @responseCode OUT
    IF @responseCode = 401
      BEGIN
        EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
        PRINT @sTmp0

        PRINT 'If invalid credentials, then it is likely the access token expired.'

        PRINT 'Your app should automatically fetch a new access token and re-try.'
        EXEC @hr = sp_OADestroy @resp

        EXEC @hr = sp_OADestroy @sbToken
        EXEC @hr = sp_OADestroy @http
        RETURN
      END


    PRINT 'Response code: ' + @responseCode

    PRINT 'Response body'

    DECLARE @json int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    EXEC sp_OAMethod @json, 'Load', @success OUT, @sTmp0
    EXEC @hr = sp_OADestroy @resp

    EXEC sp_OASetProperty @json, 'EmitCompact', 0

    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    -- 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

    DECLARE @id nvarchar(4000)

    DECLARE @selfLink nvarchar(4000)

    DECLARE @mediaLink nvarchar(4000)

    DECLARE @name nvarchar(4000)

    DECLARE @bucket nvarchar(4000)

    DECLARE @generation nvarchar(4000)

    DECLARE @metageneration nvarchar(4000)

    DECLARE @contentType nvarchar(4000)

    DECLARE @storageClass nvarchar(4000)

    DECLARE @size nvarchar(4000)

    DECLARE @md5Hash nvarchar(4000)

    DECLARE @crc32c nvarchar(4000)

    DECLARE @etag nvarchar(4000)

    DECLARE @timeCreated nvarchar(4000)

    DECLARE @updated nvarchar(4000)

    DECLARE @timeStorageClassUpdated nvarchar(4000)

    DECLARE @kind nvarchar(4000)
    EXEC sp_OAMethod @json, 'StringOf', @kind OUT, 'kind'
    DECLARE @i int
    SELECT @i = 0
    DECLARE @count_i int
    EXEC sp_OAMethod @json, 'SizeOfArray', @count_i OUT, 'items'
    WHILE @i < @count_i
      BEGIN
        EXEC sp_OASetProperty @json, 'I', @i
        EXEC sp_OAMethod @json, 'StringOf', @kind OUT, 'items[i].kind'
        EXEC sp_OAMethod @json, 'StringOf', @id OUT, 'items[i].id'
        EXEC sp_OAMethod @json, 'StringOf', @selfLink OUT, 'items[i].selfLink'
        EXEC sp_OAMethod @json, 'StringOf', @mediaLink OUT, 'items[i].mediaLink'
        EXEC sp_OAMethod @json, 'StringOf', @name OUT, 'items[i].name'
        EXEC sp_OAMethod @json, 'StringOf', @bucket OUT, 'items[i].bucket'
        EXEC sp_OAMethod @json, 'StringOf', @generation OUT, 'items[i].generation'
        EXEC sp_OAMethod @json, 'StringOf', @metageneration OUT, 'items[i].metageneration'
        EXEC sp_OAMethod @json, 'StringOf', @contentType OUT, 'items[i].contentType'
        EXEC sp_OAMethod @json, 'StringOf', @storageClass OUT, 'items[i].storageClass'
        EXEC sp_OAMethod @json, 'StringOf', @size OUT, 'items[i].size'
        EXEC sp_OAMethod @json, 'StringOf', @md5Hash OUT, 'items[i].md5Hash'
        EXEC sp_OAMethod @json, 'StringOf', @crc32c OUT, 'items[i].crc32c'
        EXEC sp_OAMethod @json, 'StringOf', @etag OUT, 'items[i].etag'
        EXEC sp_OAMethod @json, 'StringOf', @timeCreated OUT, 'items[i].timeCreated'
        EXEC sp_OAMethod @json, 'StringOf', @updated OUT, 'items[i].updated'
        EXEC sp_OAMethod @json, 'StringOf', @timeStorageClassUpdated OUT, 'items[i].timeStorageClassUpdated'
        SELECT @i = @i + 1
      END

    EXEC @hr = sp_OADestroy @sbToken
    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @json


END
GO