Event Migration Script

The Script uses a single OAuth Account, the OAuth account being used must have write access on both the calendars. By default, the code resorts to an exponential backoff of 5 seconds, this can be changed by setting the BACKOFF_TIME env variable for a maximum of MAX_RETRIES times.

The script is setup to migrate events from first to last in chronological order.

Usage

1. Get Dependencies using go get ./...
2. Create a .local.env file in the root directory.
3. Set the required environment variables in the .local.env file.
4. Set the optional environment variables as per the requirement.
5. Start the program using go run main.go start

Environment Variables

Variable Name	Description	Required
GOOGLE_CREDENTIALS	Credentials for the GCP Project	Yes
REFRESH_TOKEN	OAuth token for the account with Calendar Scope.	Yes
SOURCE_CALENDAR	Calendar ID of the source calendar	Yes
DESTINATION_CALENDAR	Calendar ID of the destination calendar	Yes
EVENT_TIME_MIN	Lower bound for the start time of the events to be migrated.	No
EVENT_TIME_MAX	Upper bound for the start time of the events to be migrated.	No
MAX_RETRIES	Maximum number of retries for the exponential backoff.	No
BACKOFF_TIME	Time to wait between retries.	No

Note: The EVENT_TIME_MIN and EVENT_TIME_MAX are in RFC3339 format. E.g.: 2023-08-10T21:27:37+05:30