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# frozen_string_literal: true
require_relative '../mastodon/snowflake'
def each_schema_load_environment
# If we're in development, also run this for the test environment.
# This is a somewhat hacky way to do this, so here's why:
# 1. We have to define this before we load the schema, or we won't
# have a timestamp_id function when we get to it in the schema.
# 2. db:setup calls db:schema:load_if_ruby, which calls
# db:schema:load, which we define above as having a prerequisite
# of this task.
# 3. db:schema:load ends up running
# ActiveRecord::Tasks::DatabaseTasks.load_schema_current, which
# calls a private method `each_current_configuration`, which
# explicitly also does the loading for the `test` environment
# if the current environment is `development`, so we end up
# needing to do the same, and we can't even use the same method
# to do it.
if Rails.env.development?
test_conf = ActiveRecord::Base.configurations['test']
if test_conf['database']&.present?
ActiveRecord::Base.establish_connection(:test)
yield
ActiveRecord::Base.establish_connection(Rails.env.to_sym)
end
end
yield
end
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.execute('SELECT datcollate FROM pg_database WHERE datname = current_database();').first['datcollate'])
warn <<~WARNING
Your database collation is susceptible to index corruption.
(This warning does not indicate that index corruption has occured and can be ignored)
(To learn more, visit: https://docs.joinmastodon.org/admin/troubleshooting/index-corruption/)
WARNING
end
end
end
Rake::Task['db:migrate'].enhance(['db:post_migration_hook'])
# Before we load the schema, define the timestamp_id function.
# Idiomatically, we might do this in a migration, but then it
# wouldn't end up in schema.rb, so we'd need to figure out a way to
# get it in before doing db:setup as well. This is simpler, and
# ensures it's always in place.
Rake::Task['db:schema:load'].enhance ['db:define_timestamp_id']
# After we load the schema, make sure we have sequences for each
# table using timestamp IDs.
Rake::Task['db:schema:load'].enhance do
Rake::Task['db:ensure_id_sequences_exist'].invoke
end
task :define_timestamp_id do
each_schema_load_environment do
Mastodon::Snowflake.define_timestamp_id
end
end
task :ensure_id_sequences_exist do
each_schema_load_environment do
Mastodon::Snowflake.ensure_id_sequences_exist
end
end
end
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