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#!/usr/bin/env ruby
# frozen_string_literal: true
require 'digest/sha1'
require 'English'
require 'fileutils'
require 'net/http'
class RedisBuilder
TARBALL_CACHE_EXPIRATION = 60 * 60 * 30
def initialize(redis_branch, tmp_dir)
@redis_branch = redis_branch
@tmp_dir = tmp_dir
@build_dir = Servers::CACHE_DIR.join("redis-#{redis_branch}").to_s
end
def bin_path
File.join(@build_dir, "src/redis-server")
end
def install
download_tarball_if_needed
if old_checkum != checksum
build
update_checksum
end
end
private
def download_tarball_if_needed
return if File.exist?(tarball_path) && File.mtime(tarball_path) > Time.now - TARBALL_CACHE_EXPIRATION
FileUtils.mkdir_p(@tmp_dir)
download(tarball_url, tarball_path)
end
def download(url, path)
response = Net::HTTP.get_response(URI(url))
case Integer(response.code)
when 300..399
download(response['Location'], path)
when 200
File.binwrite(tarball_path, response.body)
else
raise "Unexpected HTTP response #{response.code} #{url}"
end
end
def tarball_path
File.join(@tmp_dir, "redis-#{@redis_branch}.tar.gz")
end
def tarball_url
"https://github.com/redis/redis/archive/#{@redis_branch}.tar.gz"
end
def build
FileUtils.rm_rf(@build_dir)
FileUtils.mkdir_p(@build_dir)
command!('tar', 'xf', tarball_path, '-C', File.expand_path('../', @build_dir))
Dir.chdir(@build_dir) do
command!('make', 'BUILD_TLS=yes')
end
end
def update_checksum
File.write(checksum_path, checksum)
end
def old_checkum
File.read(checksum_path)
rescue Errno::ENOENT
nil
end
def checksum_path
File.join(@build_dir, 'build.checksum')
end
def checksum
@checksum ||= Digest::SHA1.file(tarball_path).hexdigest
end
def command!(*args)
puts "$ #{args.join(' ')}"
raise "Command failed with status #{$CHILD_STATUS.exitstatus}" unless system(*args)
end
end
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