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# frozen_string_literal: true
require 'set'
module Gitlab
module Database
module Migrations
class Squasher
RSPEC_FILENAME_REGEXP = /\A([0-9]+_)?([_a-z0-9]*)\.rb\z/
def initialize(git_output)
@migration_data = migration_files_from_git(git_output).filter_map do |mf|
basename = Pathname(mf).basename.to_s
file_name_match = ActiveRecord::Migration::MigrationFilenameRegexp.match(basename)
slug = file_name_match[2]
unless slug == 'init_schema'
{
path: mf,
basename: basename,
timestamp: file_name_match[1],
slug: slug
}
end
end
end
def files_to_delete
@migration_data.pluck(:path) + schema_migrations + find_migration_specs
end
private
def schema_migrations
@migration_data.map { |m| "db/schema_migrations/#{m[:timestamp]}" }
end
def find_migration_specs
@file_slugs = Set.new @migration_data.pluck(:slug)
(migration_specs + ee_migration_specs).select { |f| file_has_slug?(f) }
end
def migration_files_from_git(body)
body.chomp
.split("\n")
.select { |fn| fn.end_with?('.rb') }
end
def match_file_slug(filename)
m = RSPEC_FILENAME_REGEXP.match(filename)
return if m.nil?
m[2].sub(/_spec$/, '')
end
def file_has_slug?(filename)
spec_slug = match_file_slug(Pathname(filename).basename.to_s)
return false if spec_slug.nil?
@file_slugs.include?(spec_slug)
end
def migration_specs
Dir.glob(Rails.root.join('spec/migrations/*.rb'))
end
def ee_migration_specs
Dir.glob(Rails.root.join('ee/spec/migrations/*.rb'))
end
end
end
end
end
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