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# frozen_string_literal: true
# The purpose of this code is to transform legacy `database.yml`
# into a `database.yml` containing `main:` as a name of a first database
#
# This should be removed once all places using legacy `database.yml`
# are fixed. The likely moment to remove this check is the %14.0.
#
# This converts the following syntax:
#
# production:
# adapter: postgresql
# database: gitlabhq_production
# username: git
# password: "secure password"
# host: localhost
#
# Into:
#
# production:
# main:
# adapter: postgresql
# database: gitlabhq_production
# username: git
# password: "secure password"
# host: localhost
#
module Gitlab
module Patch
module LegacyDatabaseConfig
extend ActiveSupport::Concern
prepended do
attr_reader :uses_legacy_database_config
end
def load_database_yaml
return super unless Gitlab.ee?
super.deep_merge(load_geo_database_yaml)
end
# This method is taken from Rails to load a database YAML file without
# evaluating ERB. This allows us to create the rake tasks for the Geo
# tracking database without filling in the configuration values or
# loading the environment. To be removed when we start configure Geo
# tracking database in database.yml instead of custom database_geo.yml
#
# https://github.com/rails/rails/blob/v6.1.4/railties/lib/rails/application/configuration.rb#L255
def load_geo_database_yaml
path = Rails.root.join("config/database_geo.yml")
return {} unless File.exist?(path)
require "rails/application/dummy_erb_compiler"
yaml = DummyERB.new(Pathname.new(path).read).result
config = YAML.load(yaml) || {} # rubocop:disable Security/YAMLLoad
config.to_h do |env, configs|
# This check is taken from Rails where the transformation
# of a flat database.yml is done into `primary:`
# https://github.com/rails/rails/blob/v6.1.4/activerecord/lib/active_record/database_configurations.rb#L169
if configs.is_a?(Hash) && !configs.all? { |_, v| v.is_a?(Hash) }
configs = { "geo" => configs }
end
[env, configs]
end
end
def database_configuration
@uses_legacy_database_config = false # rubocop:disable Gitlab/ModuleWithInstanceVariables
super.to_h do |env, configs|
# This check is taken from Rails where the transformation
# of a flat database.yml is done into `primary:`
# https://github.com/rails/rails/blob/v6.1.4/activerecord/lib/active_record/database_configurations.rb#L169
if configs.is_a?(Hash) && !configs.all? { |_, v| v.is_a?(Hash) }
configs = { "main" => configs }
@uses_legacy_database_config = true # rubocop:disable Gitlab/ModuleWithInstanceVariables
end
if Gitlab.ee? && File.exist?(Rails.root.join("config/database_geo.yml"))
migrations_paths = ["ee/db/geo/migrate"]
migrations_paths << "ee/db/geo/post_migrate" unless ENV['SKIP_POST_DEPLOYMENT_MIGRATIONS']
configs["geo"] =
Rails.application.config_for(:database_geo)
.merge(migrations_paths: migrations_paths, schema_migrations_path: "ee/db/geo/schema_migrations")
.stringify_keys
end
[env, configs]
end
end
end
end
end
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