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mastodon/lib/tasks/db.rake

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Ruby

# frozen_string_literal: true
namespace :db do
namespace :migrate do
desc 'Setup the db or migrate depending on state of db'
task setup: :environment do
begin
if ActiveRecord::Migrator.current_version.zero?
Rake::Task['db:migrate'].invoke
Rake::Task['db:seed'].invoke
end
rescue ActiveRecord::NoDatabaseError
Rake::Task['db:setup'].invoke
else
Rake::Task['db:migrate'].invoke
end
end
end
task :post_migration_hook do
at_exit do
unless %w(C POSIX).include?(ActiveRecord::Base.connection.select_one('SELECT datcollate FROM pg_database WHERE datname = current_database();')['datcollate'])
warn <<~WARNING
Your database collation may be susceptible to index corruption.
(This warning does not indicate that index corruption has occurred, and it can be ignored if you've previously checked for index corruption)
(To learn more, visit: https://docs.joinmastodon.org/admin/troubleshooting/index-corruption/)
WARNING
end
end
end
task :pre_migration_check do
version = ActiveRecord::Base.connection.select_one("SELECT current_setting('server_version_num') AS v")['v'].to_i
abort 'ERROR: This version of Mastodon requires PostgreSQL 9.5 or newer. Please update PostgreSQL before updating Mastodon.' if version < 90_500
end
Rake::Task['db:migrate'].enhance(['db:pre_migration_check'])
Rake::Task['db:migrate'].enhance(['db:post_migration_hook'])
end