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(CkPython) Google Drive Refresh Access TokenDemonstrates how to automatically refresh the access token when it expires.
import sys import chilkat success = True # It requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. # This example uses a previously obtained access token having permission for the # Google Drive scope. # The access token (and refresh token) was previously saved to a JSON file with this format: # See Get Google Drive OAuth2 Access Token # { # "access_token": "ya29.Gls-BsdxTWuenChv ... yzVIrXikkLxu5T6dy4I6GjADFardoz4Lruw", # "expires_in": 3600, # "refresh_token": "1/tMBJ ... 27D-Hk6rpQYBA", # "scope": "https://www.googleapis.com/auth/drive", # "token_type": "Bearer" # } json = chilkat.CkJsonObject() tokenFilePath = "qa_data/tokens/googleDrive.json" json.LoadFile(tokenFilePath) oauth2 = chilkat.CkOAuth2() oauth2.put_AccessToken(json.stringOf("access_token")) oauth2.put_RefreshToken(json.stringOf("refresh_token")) rest = chilkat.CkRest() # Connect using TLS. bAutoReconnect = True success = rest.Connect("www.googleapis.com",443,True,bAutoReconnect) # Provide the authentication credentials (i.e. the access token) rest.SetAuthOAuth2(oauth2) # We'll test with a simple request to empty trash. # If our access token expired, we'll get a 401 response.. jsonResponse = rest.fullRequestNoBody("DELETE","/drive/v3/files/trash") if (rest.get_LastMethodSuccess() != True): print(rest.lastErrorText()) sys.exit() # If the access token expired, we'll get a 401 response status with this response body: # { # "error": { # "errors": [ # { # "domain": "global", # "reason": "authError", # "message": "Invalid Credentials", # "locationType": "header", # "location": "Authorization" # } # ], # "code": 401, # "message": "Invalid Credentials" # } # } if (rest.get_ResponseStatusCode() == 401): print("Refreshing access token...") oauth2.put_AuthorizationEndpoint("https://accounts.google.com/o/oauth2/v2/auth") oauth2.put_TokenEndpoint("https://www.googleapis.com/oauth2/v4/token") # Replace these with actual values. oauth2.put_ClientId("GOOGLE-CLIENT-ID") oauth2.put_ClientSecret("GOOGLE-CLIENT-SECRET") oauth2.put_Scope("https://www.googleapis.com/auth/drive") # Use OAuth2 to refresh the access token. success = oauth2.RefreshAccessToken() if (success != True): print(oauth2.lastErrorText()) sys.exit() # Save the new access token to our XML file (so we can refresh it again when needed). json.UpdateString("access_token",oauth2.accessToken()) fac = chilkat.CkFileAccess() fac.WriteEntireTextFile(tokenFilePath,json.emit(),"utf-8",False) print("Access Token Refreshed!") # Retry the request with the new access token.. jsonResponse = rest.fullRequestNoBody("DELETE","/drive/v3/files/trash") if (rest.get_LastMethodSuccess() != True): print(rest.lastErrorText()) sys.exit() # A successful response will have a status code equal to 204 and the response body is empty. # (If not successful, then there should be a JSON response body with information..) if (rest.get_ResponseStatusCode() != 204): print("response status code = " + str(rest.get_ResponseStatusCode())) print("response status text = " + rest.responseStatusText()) print("response header: " + rest.responseHeader()) print("response JSON: " + jsonResponse) sys.exit() print("Trash Emptied!") |
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