Migration files are stored in the /site/gatsby-size/migrations folder and their executions are logged in the migrations collection.
Please add a connection string with read/write permissions to the mongo database:
MONGODB_MIGRATIONS_CONNECTION_STRING=
Migrations run automatically as part of Gatsby's onPreBootstrap event, but it is also possible to run them from the command line for debugging or testing purposes:
To run all pending migrations:
node migrator up
To run a specific migration:
node migrator up --name 2022.02.18T16.29.14.increment-report-number.js
To add a new migration, execute the following command and define the up and down processes as pertinent.
node migrator create --name increment-report-number.js --folder migrations
Execution is taken care of by the umzug package. Please refer to its documentation for more information.