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(PowerShell) Google Drive Refresh Access TokenDemonstrates how to automatically refresh the access token when it expires.
Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll" $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 = New-Object Chilkat.JsonObject $tokenFilePath = "qa_data/tokens/googleDrive.json" $json.LoadFile($tokenFilePath) $oauth2 = New-Object Chilkat.OAuth2 $oauth2.AccessToken = $json.StringOf("access_token") $oauth2.RefreshToken = $json.StringOf("refresh_token") $rest = New-Object Chilkat.Rest # 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.LastMethodSuccess -ne $true) { $($rest.LastErrorText) 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.ResponseStatusCode -eq 401) { $("Refreshing access token...") $oauth2.AuthorizationEndpoint = "https://accounts.google.com/o/oauth2/v2/auth" $oauth2.TokenEndpoint = "https://www.googleapis.com/oauth2/v4/token" # Replace these with actual values. $oauth2.ClientId = "GOOGLE-CLIENT-ID" $oauth2.ClientSecret = "GOOGLE-CLIENT-SECRET" $oauth2.Scope = "https://www.googleapis.com/auth/drive" # Use OAuth2 to refresh the access token. $success = $oauth2.RefreshAccessToken() if ($success -ne $true) { $($oauth2.LastErrorText) 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 = New-Object Chilkat.FileAccess $fac.WriteEntireTextFile($tokenFilePath,$json.Emit(),"utf-8",$false) $("Access Token Refreshed!") # Retry the request with the new access token.. $jsonResponse = $rest.FullRequestNoBody("DELETE","/drive/v3/files/trash") if ($rest.LastMethodSuccess -ne $true) { $($rest.LastErrorText) 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.ResponseStatusCode -ne 204) { $("response status code = " + $rest.ResponseStatusCode) $("response status text = " + $rest.ResponseStatusText) $("response header: " + $rest.ResponseHeader) $("response JSON: " + $jsonResponse) exit } $("Trash Emptied!") |
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