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(SQL Server) Get Google Cloud Storage Access Token using Service Account JSON Private Key

Demonstrates how to get a Google Cloud Storage access token using a JSON service account private key. Obtaining an access token for a service account requires no user interaction (it does not require a browser, nor callback URI's, etc.).

When an access token expires, an application can be (and should be) designed to automatically fetch a new access token.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    --  This example requires the Chilkat API to have been previously unlocked.
    --  See Global Unlock Sample for sample code.

    --  First load the JSON key into a string.
    DECLARE @fac int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.FileAccess', @fac OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @jsonKey nvarchar(4000)
    EXEC sp_OAMethod @fac, 'ReadEntireTextFile', @jsonKey OUT, 'qa_data/googleApi/Chilkat-8b76318b320a-serviceAcct-for-GoogleCloudStorage.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 @fac
        RETURN
      END

    --  A JSON private key should look something 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_9_5_0.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', ''

    --  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_9_5_0.Socket', @tlsSock OUT

    DECLARE @success int
    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 @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 @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

    --  We're going to save this access token to a file to be used
    --  by other examples.
    DECLARE @sbToken int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.StringBuilder', @sbToken OUT

    EXEC sp_OAGetProperty @gAuth, 'AccessToken', @sTmp0 OUT
    EXEC sp_OAMethod @sbToken, 'Append', @success OUT, @sTmp0
    EXEC sp_OAMethod @sbToken, 'WriteFile', @success OUT, 'qa_data/tokens/googleCloudStorageAccessToken.txt', 'utf-8', 0

    EXEC @hr = sp_OADestroy @fac
    EXEC @hr = sp_OADestroy @gAuth
    EXEC @hr = sp_OADestroy @tlsSock
    EXEC @hr = sp_OADestroy @sbToken


END
GO

 

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