76 lines
2.9 KiB
Ruby
76 lines
2.9 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
#
|
|
# Copyright (C) 2016 - present Instructure, Inc.
|
|
#
|
|
# This file is part of Canvas.
|
|
#
|
|
# Canvas is free software: you can redistribute it and/or modify it under
|
|
# the terms of the GNU Affero General Public License as published by the Free
|
|
# Software Foundation, version 3 of the License.
|
|
#
|
|
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
|
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
|
|
# details.
|
|
#
|
|
# You should have received a copy of the GNU Affero General Public License along
|
|
# with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# This config file is used for switching environment variables
|
|
# that need to be set before rails initialization even starts.
|
|
# That's why it is required directly from the Gemfile.
|
|
|
|
# You can set the Rails version to use by:
|
|
# 1. CANVAS_RAILS="<supported version>"
|
|
# 2. Create a file RAILS_VERSION with <supported version> as the contents
|
|
# 3. Create a Consul setting private/canvas/rails_version with <supported version> as the contents
|
|
|
|
# the default version (corresponding to the bare Gemfile.lock) must be listed first
|
|
SUPPORTED_RAILS_VERSIONS = %w[7.0 7.1].freeze
|
|
|
|
unless defined?($canvas_rails)
|
|
file_path = File.expand_path("RAILS_VERSION", __dir__)
|
|
|
|
if ENV["CANVAS_RAILS"]
|
|
$canvas_rails = ENV["CANVAS_RAILS"]
|
|
elsif File.exist?(file_path)
|
|
$canvas_rails = File.read(file_path).strip
|
|
else
|
|
begin
|
|
# have to do the consul communication without any gems, because
|
|
# we're in the context of loading the gemfile
|
|
require "base64"
|
|
require "json"
|
|
require "net/http"
|
|
require "yaml"
|
|
|
|
environment = YAML.safe_load_file(File.expand_path("consul.yml", __dir__)).dig(ENV["RAILS_ENV"] || "development", "environment")
|
|
|
|
keys = [
|
|
["private/canvas", environment, $canvas_cluster, "rails_version"].compact.join("/"),
|
|
["private/canvas", environment, "rails_version"].compact.join("/"),
|
|
["private/canvas", "rails_version"].compact.join("/"),
|
|
["global/private/canvas", environment, "rails_version"].compact.join("/"),
|
|
["global/private/canvas", "rails_version"].compact.join("/")
|
|
].uniq
|
|
|
|
result = nil
|
|
Net::HTTP.start("localhost", 8500, connect_timeout: 1, read_timeout: 1) do |http|
|
|
keys.each do |key|
|
|
result = http.request_get("/v1/kv/#{key}?stale")
|
|
result = nil unless result.is_a?(Net::HTTPSuccess)
|
|
break if result
|
|
end
|
|
end
|
|
$canvas_rails = result ? Base64.decode64(JSON.parse(result.body).first["Value"]).strip : SUPPORTED_RAILS_VERSIONS.first
|
|
rescue
|
|
$canvas_rails = SUPPORTED_RAILS_VERSIONS.first
|
|
end
|
|
end
|
|
end
|
|
|
|
unless SUPPORTED_RAILS_VERSIONS.any?($canvas_rails)
|
|
raise "unsupported Rails version specified #{$canvas_rails}"
|
|
end
|