126 lines
3.8 KiB
Ruby
Executable File
126 lines
3.8 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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# Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
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require 'yaml'
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require 'resolv'
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#
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# Configures the CI system
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# - either (randomly) mysql or postgresql, if it is available
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# - (randomly) Redis or File as web socket session back end, if Redis is available
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#
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# Database config happens directly in config/database.yml, other settings are written to
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# .gitlab/environment.env which must be sourced in the CI configuration.
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#
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class ConfigureEnvironment
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@env_file_content = <<~ENV_FILE_CONTENT
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#!/bin/bash
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FRESHENVFILE=fresh.env && test -f $FRESHENVFILE && source $FRESHENVFILE
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true
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ENV_FILE_CONTENT
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def self.configure_redis
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if ENV['REDIS_URL'].nil? || ENV['REDIS_URL'].empty? # rubocop:disable Rails/Blank
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puts 'Redis is not available, using File as web socket session store.'
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return
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end
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if [true, false].sample
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puts 'Using Redis as web socket session store.'
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return
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end
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puts 'Using File as web socket session store.'
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@env_file_content += "unset REDIS_URL\n"
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end
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def self.configure_memcached
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if ENV['MEMCACHE_SERVERS'].nil? || ENV['MEMCACHE_SERVERS'].empty? # rubocop:disable Rails/Blank
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puts 'Memcached is not available, using File as Rails cache store.'
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return
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end
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if [true, false].sample
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puts 'Using memcached as Rails cache store.'
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return
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end
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puts "Using Zammad's file store as Rails cache store."
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@env_file_content += "unset MEMCACHE_SERVERS\n"
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end
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def self.configure_database # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
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if File.exist? File.join(__dir__, '../config/database.yml')
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puts "'config/database.yml' already exists and will not be changed."
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return
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end
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cnf = YAML.load_file(File.join(__dir__, '../config/database/database.yml'))
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cnf.delete('default')
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database = ENV['ENFORCE_DB_SERVICE']
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# Lookup in /etc/hosts first: gitlab uses that if FF_NETWORK_PER_BUILD is not set.
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if !database
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hostsfile = '/etc/hosts'
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database = %w[postgresql mysql].shuffle.find do |possible_database|
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File.foreach(hostsfile).any? { |l| l[possible_database] }
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end
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end
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# Lookup via DNS if needed: gitlab uses that if FF_NETWORK_PER_BUILD is enabled.
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if !database
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dns = Resolv::DNS.new
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dns.timeouts = 3
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database = %w[postgresql mysql].shuffle.find do |possible_database|
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# Perform a lookup of the database host to check if it is configured as a service.
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if dns.getaddress possible_database
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next possible_database
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end
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rescue Resolv::ResolvError
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# Ignore DNS lookup errors
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end
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end
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raise "Can't find any supported database." if database.nil?
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puts "Using #{database} as database service."
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db_settings_map = {
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'postgresql' => {
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'adapter' => 'postgresql',
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'username' => 'zammad',
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'password' => 'zammad',
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'host' => 'postgresql', # db alias from gitlab-ci.yml
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},
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'mysql' => {
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'adapter' => 'mysql2',
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'username' => 'root',
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'password' => 'zammad',
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'host' => 'mysql', # db alias from gitlab-ci.yml
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}
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}
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# fetch DB settings from settings map and fallback to postgresql
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db_settings = db_settings_map.fetch(database) { db_settings_map['postgresql'] }
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%w[development test production].each do |environment|
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cnf[environment].merge!(db_settings)
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end
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File.write(File.join(__dir__, '../config/database.yml'), Psych.dump(cnf))
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end
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def self.write_env_file
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File.write(File.join(__dir__, 'environment.env'), @env_file_content)
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end
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def self.run
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configure_redis
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configure_memcached
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configure_database
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write_env_file
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end
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end
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ConfigureEnvironment.run
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