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expected.rb
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expected.rb
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# frozen_string_literal: true
# MIT License
#
# Copyright (c) 2020 Yurii Dubinka
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
require_relative "../exception"
module Vcs4sql
module Sqlite
# The expected database change log.
# Contains all changes which should be applied to target database.
class Expected
def initialize(home, testdata)
@home = home
@nonprod = ->(f) { !testdata && (f.to_s.end_with? ".testdata.sql") }
end
# Apply all sql files one by one
# @param [Object] conn the connection to the database.
def apply_all(conn)
apply(-1, conn)
end
# Apply sql files which weren't applied yet
# @param [Object] conn the connection to the database.
def apply_mismatch(existing, conn)
version = -1
changelog.each_with_index do |change, i|
break if existing.absent(i)
unless change.matches existing.change(i)
raise ChecksumMismatchError.new change, existing.change(i)
end
version = i
end
apply(version, conn)
end
private
# Apply sql files which weren't applied yet based on version
# @param [Integer] ver The latest applied version to the database
# @param [Object] conn the connection to the database.
def apply(ver, conn)
# @todo #/DEV Raise an exception in case if any of arguments are null or
# empty. Potentially we may add verification of the type, but this is
# optional.
changelog.select { |change| change.version > ver }.each do |change|
change.apply(conn)
end
end
def changelog
return @changelog if defined? @changelog
@changelog = Dir.glob("#{@home}/*.sql")
.select { |f| File.file? f }
.reject(&@nonprod)
.sort
.each_with_index.map do |f, i|
sql = File.read(f).to_s.tr "\r", " "
md5 = Digest::MD5.hexdigest sql
Changelog.new(f, Time.now.iso8601(6), i, md5, sql)
end
end
end
end
end