SQL Server
SQL Server
Get Google API Access Token using JSON Private Key using NIST Time Server Date/Time
Demonstrates how to get a Google API access token using a JSON service account private key, using the NIST time server date/time rather than the local system date/time.Chilkat SQL Server Downloads
-- 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.
-- First, let's get the current date/time from time-c.nist.gov
DECLARE @socket int
EXEC @hr = sp_OACreate 'Chilkat.Socket', @socket OUT
IF @hr <> 0
BEGIN
PRINT 'Failed to create ActiveX component'
RETURN
END
-- Connect to an NIST time server and read the current date/time
DECLARE @maxWaitMs int
SELECT @maxWaitMs = 8000
DECLARE @useTls int
SELECT @useTls = 0
EXEC sp_OAMethod @socket, 'Connect', @success OUT, 'time-c.nist.gov', 37, @useTls, @maxWaitMs
IF @success <> 1
BEGIN
EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
PRINT @sTmp0
EXEC @hr = sp_OADestroy @socket
RETURN
END
-- The time server will send a big-endian 32-bit integer representing
-- the number of seconds since since 00:00 (midnight) 1 January 1900 GMT.
-- The ReceiveInt32 method will receive a 4-byte integer, but returns
-- 1 or 0 to indicate success. If successful, the integer
-- is obtained via the ReceivedInt property.
DECLARE @bigEndian int
SELECT @bigEndian = 1
EXEC sp_OAMethod @socket, 'ReceiveInt32', @success OUT, @bigEndian
IF @success <> 1
BEGIN
EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
PRINT @sTmp0
EXEC @hr = sp_OADestroy @socket
RETURN
END
DECLARE @dt int
EXEC @hr = sp_OACreate 'Chilkat.CkDateTime', @dt OUT
EXEC sp_OAGetProperty @socket, 'ReceivedInt', @iTmp0 OUT
EXEC sp_OAMethod @dt, 'SetFromNtpTime', @success OUT, @iTmp0
-- Show the current local date/time
DECLARE @bLocalTime int
SELECT @bLocalTime = 1
EXEC sp_OAMethod @dt, 'GetAsRfc822', @sTmp0 OUT, @bLocalTime
PRINT 'Current local date/time: ' + @sTmp0
SELECT @maxWaitMs = 10
EXEC sp_OAMethod @socket, 'Close', @success OUT, @maxWaitMs
-- ------------------------------------------------------------------------
-- OK, we have the current date/time. We'll use it to set the IAT property
-- in the code below.
-- First load the JSON key into a string.
DECLARE @fac int
EXEC @hr = sp_OACreate 'Chilkat.FileAccess', @fac OUT
DECLARE @jsonKey nvarchar(4000)
EXEC sp_OAMethod @fac, 'ReadEntireTextFile', @jsonKey OUT, 'qa_data/googleApi/ChilkatTest-ab2ecd52ef98.json', 'utf-8'
EXEC sp_OAGetProperty @fac, 'LastMethodSuccess', @iTmp0 OUT
IF @iTmp0 <> 1
BEGIN
EXEC sp_OAGetProperty @fac, 'LastErrorText', @sTmp0 OUT
PRINT @sTmp0
EXEC @hr = sp_OADestroy @socket
EXEC @hr = sp_OADestroy @dt
EXEC @hr = sp_OADestroy @fac
RETURN
END
-- A JSON private key should look like this:
-- {
-- "type": "service_account",
-- "project_id": "chilkattest-1350",
-- "private_key_id": "fa2e36ee26986eab628b59868af8bec1d1c64c38",
-- "private_key": "-----BEGIN PRIVATE KEY-----\nMIIEvgIjFa...28N64N2n1E4FYzBZjSdy\n-----END PRIVATE KEY-----\n",
-- "client_email": "598922945226-00rb0ppfg0sndajo6bhvd4v17jtj2d3a@developer.gserviceaccount.com",
-- "client_id": "598922945226-00rb0ppfg0snd9jo7bhvd4v17jtj2d3a.apps.googleusercontent.com",
-- "auth_uri": "https://accounts.google.com/o/oauth2/auth",
-- "token_uri": "https://accounts.google.com/o/oauth2/token",
-- "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
-- "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/598922945226-00rb0ppfg0sndajo6bhvd4v17jtj2d3a%40developer.gserviceaccount.com"
-- }
DECLARE @gAuth int
EXEC @hr = sp_OACreate 'Chilkat.AuthGoogle', @gAuth OUT
EXEC sp_OASetProperty @gAuth, 'JsonKey', @jsonKey
-- Choose a scope.
EXEC sp_OASetProperty @gAuth, 'Scope', 'https://www.googleapis.com/auth/cloud-platform'
-- Request an access token that is valid for this many seconds.
EXEC sp_OASetProperty @gAuth, 'ExpireNumSeconds', 3600
-- If the application is requesting delegated access:
-- The email address of the user for which the application is requesting delegated access,
-- then set the email address here. (Otherwise leave it empty.)
EXEC sp_OASetProperty @gAuth, 'SubEmailAddress', ''
-- ------------------------------------------------------------------------
-- Set the IAT using the date/time from the NIST time server.
DECLARE @unixTime int
EXEC sp_OAMethod @dt, 'GetAsUnixTime', @unixTime OUT, 0
PRINT 'unixTime = ' + @unixTime
EXEC sp_OASetProperty @gAuth, 'Iat', @unixTime
-- Connect to www.googleapis.com using TLS (TLS 1.2 is the default.)
-- The Chilkat socket object is used so that the connection can be established
-- through proxies or an SSH tunnel if desired.
DECLARE @tlsSock int
EXEC @hr = sp_OACreate 'Chilkat.Socket', @tlsSock OUT
EXEC sp_OAMethod @tlsSock, 'Connect', @success OUT, 'www.googleapis.com', 443, 1, 5000
IF @success <> 1
BEGIN
EXEC sp_OAGetProperty @tlsSock, 'LastErrorText', @sTmp0 OUT
PRINT @sTmp0
EXEC @hr = sp_OADestroy @socket
EXEC @hr = sp_OADestroy @dt
EXEC @hr = sp_OADestroy @fac
EXEC @hr = sp_OADestroy @gAuth
EXEC @hr = sp_OADestroy @tlsSock
RETURN
END
-- Send the request to obtain the access token.
EXEC sp_OAMethod @gAuth, 'ObtainAccessToken', @success OUT, @tlsSock
IF @success <> 1
BEGIN
EXEC sp_OAGetProperty @gAuth, 'LastErrorText', @sTmp0 OUT
PRINT @sTmp0
EXEC @hr = sp_OADestroy @socket
EXEC @hr = sp_OADestroy @dt
EXEC @hr = sp_OADestroy @fac
EXEC @hr = sp_OADestroy @gAuth
EXEC @hr = sp_OADestroy @tlsSock
RETURN
END
-- Examine the access token:
EXEC sp_OAGetProperty @gAuth, 'AccessToken', @sTmp0 OUT
PRINT 'Access Token: ' + @sTmp0
EXEC @hr = sp_OADestroy @socket
EXEC @hr = sp_OADestroy @dt
EXEC @hr = sp_OADestroy @fac
EXEC @hr = sp_OADestroy @gAuth
EXEC @hr = sp_OADestroy @tlsSock
END
GO