(SQL Server) Send XML REST Request, Get Response with No Body (Google Cloud Storage)

Demonstrates sending a RESTful XML request, and receiving a response where the expected response is a header with no body (Content-Length = 0). This example will create a bucket in Google Cloud Storage using the Google Cloud Storage XML API.

See Create a Bucket using the XML API for additional request options.

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 will create a bucket in Google Cloud Storage using the XML API.
    DECLARE @success int

    -- It requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @gAuth int
    -- Use "Chilkat_9_5_0.AuthGoogle" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.AuthGoogle', @gAuth OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Obtain an access token as shown in one of the following examples:
    -- See Get Access Token using a Service Account JSON Key
    -- See Get Access Token using a P12 File

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

    -- Connect using TLS.
    DECLARE @bAutoReconnect int
    SELECT @bAutoReconnect = 1
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'www.googleapis.com', 443, 1, @bAutoReconnect

    -- Provide the authentication credentials (i.e. the access key)
    EXEC sp_OAMethod @rest, 'SetAuthGoogle', @success OUT, @gAuth

    -- Build the XML request body for creating a bucket.
    -- See https://cloud.google.com/storage/docs/xml-api/put-bucket-create
    DECLARE @xmlReqBody int
    -- Use "Chilkat_9_5_0.Xml" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Xml', @xmlReqBody OUT

    EXEC sp_OASetProperty @xmlReqBody, 'Tag', 'CreateBucketConfiguration'
    EXEC sp_OAMethod @xmlReqBody, 'NewChild2', NULL, 'LocationConstraint', 'us'
    EXEC sp_OAMethod @xmlReqBody, 'NewChild2', NULL, 'StorageClass', 'STANDARD'

    -- Show the HTTP request body we'll be sending.
    EXEC sp_OAMethod @xmlReqBody, 'GetXml', @sTmp0 OUT
    PRINT @sTmp0

    -- There are no query parameters...

    -- The HOST header must be specified, because it needs to be different than
    -- the domain previously passed to the Connect method.
    -- The name of the bucket is the 1st part of the HOST header.
    EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'Host', 'chilkat-example-bucket.storage.googleapis.com'

    -- The project ID is specified in an HTTP request header
    EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'x-goog-project-id', 'chilkattest-1050'

    -- In this case, the response body is expected to be empty.  We can still
    -- call FullRequestString.  We expect an empty string to be returned.
    DECLARE @responseStr nvarchar(4000)
    EXEC sp_OAMethod @xmlReqBody, 'GetXml', @sTmp0 OUT
    EXEC sp_OAMethod @rest, 'FullRequestString', @responseStr OUT, 'PUT', '/', @sTmp0
    EXEC sp_OAGetProperty @rest, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @gAuth
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @xmlReqBody
        RETURN
      END

    -- Check the response status code to make sure it is 200.
    DECLARE @responseStatus int
    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @responseStatus OUT

    PRINT 'Response Status Code = ' + @responseStatus

    EXEC @hr = sp_OADestroy @gAuth
    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @xmlReqBody


END
GO