SQL Server

Calendar: Refresh Expired OAuth2 Access Token

See more Microsoft Calendar Examples

Refreshes an expired OAuth2 access token. SQL Server

-- 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)
    DECLARE @success int
    SELECT @success = 0

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

    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OAMethod @json, 'LoadFile', @success OUT, 'qa_data/tokens/msGraphCalendar.json'
    IF @success <> 1
      BEGIN
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    DECLARE @req int
    EXEC @hr = sp_OACreate 'Chilkat.HttpRequest', @req OUT

    EXEC sp_OAMethod @req, 'AddParam', NULL, 'grant_type', 'refresh_token'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'redirect_uri', 'http://localhost:3017/'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'client_id', 'MICROSOFT-GRAPH-CLIENT-ID'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'client_secret', 'MICROSOFT-GRAPH-CLIENT-SECRET'
    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'refresh_token'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'refresh_token', @sTmp0
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'scope', 'openid profile offline_access user.readwrite calendars.readwrite files.readwrite'

    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT

    EXEC sp_OASetProperty @req, 'HttpVerb', 'POST'
    EXEC sp_OASetProperty @req, 'ContentType', 'application/x-www-form-urlencoded'

    DECLARE @resp int
    EXEC @hr = sp_OACreate 'Chilkat.HttpResponse', @resp OUT

    EXEC sp_OAMethod @http, 'HttpReq', @success OUT, 'https://login.microsoftonline.com/common/oauth2/v2.0/token', @req, @resp
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @req
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END

    -- Load the JSON response.
    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    EXEC sp_OAMethod @json, 'Load', @success OUT, @sTmp0
    EXEC sp_OASetProperty @json, 'EmitCompact', 0

    -- Show the JSON response.
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0


    EXEC sp_OAGetProperty @resp, 'StatusCode', @iTmp0 OUT
    PRINT 'Response status code: ' + @iTmp0

    -- If the response status code is not 200, then it's an error.
    EXEC sp_OAGetProperty @resp, 'StatusCode', @iTmp0 OUT
    IF @iTmp0 <> 200
      BEGIN
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @req
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END

    -- Save the refreshed access token JSON to a file for future requests.
    DECLARE @fac int
    EXEC @hr = sp_OACreate 'Chilkat.FileAccess', @fac OUT

    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    EXEC sp_OAMethod @fac, 'WriteEntireTextFile', @success OUT, 'qa_data/tokens/msGraphCalendar.json', @sTmp0, 'utf-8', 0


    PRINT 'Success.'

    EXEC @hr = sp_OADestroy @json
    EXEC @hr = sp_OADestroy @req
    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @resp
    EXEC @hr = sp_OADestroy @fac


END
GO