Lua

Get a Google Drive Access Token using a JSON Private Key

See more Google Drive Examples

Demonstrates how to get a Google Drive API access token using a JSON service account private key. Lua

local chilkat = require("chilkat")

-- 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.
local fac = chilkat.FileAccess.new()
local jsonKey = fac:read_entire_text_file("qa_data/googleApi/chilkatcloud-b8826e030499.json", "utf-8")
if not fac.last_method_success then
    print(fac.last_error_text)
    return
end

local gAuth = chilkat.AuthGoogle.new()
gAuth.json_key = jsonKey

-- Choose a scope.
gAuth.scope = "https://www.googleapis.com/auth/drive"

-- Request an access token that is valid for this many seconds.
gAuth.expire_num_seconds = 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.)
gAuth.sub_email_address = ""

-- 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.
local tlsSock = chilkat.Socket.new()
local success = tlsSock:connect("www.googleapis.com", 443, true, 5000)
if not success then
    print(tlsSock.last_error_text)
    return
end

-- Send the request to obtain the access token.
success = gAuth:obtain_access_token(tlsSock)
if not success then
    print(gAuth.last_error_text)
    return
end

-- Examine the access token:
print("Access Token: " .. gAuth.access_token)