Google Calendar | Service Account

The Google Calendar client can work as a service without user interaction, so this is useful when you want to run a Windows service, a daemon, etc.

 

Google Cloud requires creating a Service Account (instead of OAuth2 credentials) to run this type of project, and the Google Calendar API requires that the service account uses Domain-Wide Delegation to get the required credentials to access the calendars.

 

You can read more about how to create Google Service Accounts.

 

Once the Google Cloud account has been configured with a service account and linked to a workspace email account using Domain-Wide Delegation, you can configure the Google Calendar client to work with it by following the next steps:

 

 

• Set the property GoogleCloudOptions.Authentication the value gcaJWT.
• Import the JSON file generated in your Google Cloud Account using the method LoadSettingsFromFile. This file contains the private key to encrypt the JWT and some other properties required by the client.
• After importing the JSON file, the following properties are automatically filled:
  • ClientEmail: is the service account name
  • PrivateKeyId: is the id of the private key file
  • PrivateKey: is the private key file
• Finally, set in the property GoogleCloudOptions.JWT.Subject the Workspace email account linked to the service account. 

 

After configuring the client, you can start sending requests to the Google Calendar API without user interaction.