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Contents
require 'yaml'
require 'dotenv'
module DockerSync
module ConfigSerializer
class << self
# @param [String] config_path path to the yaml configuration to load
# @return [Object] returns a Yaml hashmap, expaneded by ENV vars
def default_deserializer_file(config_path)
config_string = File.read(config_path)
default_deserializer_string(config_string)
end
# @param [String] config_string the configuration string inf yaml format
# @return [Object] a yaml hashmap
def default_deserializer_string(config_string)
deserialize_config( expand_env_variables(config_string) )
end
private
# Replaces our tokens, in this case all ENV variables we defined. Find those in the string an replace
# them with then values from our ENV, including the dotenv file
# @param [String] config_string
# @return [String]
def expand_env_variables(config_string)
load_dotenv
env_hash = {}
ENV.each {|k,v| env_hash[k.to_sym] = v }
config_string.gsub!('${', '%{')
config_string % env_hash
end
# deserializes the configuration string, right now as a yaml formatted string
# @param [String] config_string
# @return [Object]
def deserialize_config(config_string)
# noinspection RubyResolve
YAML.load(config_string)
end
# Loads the dotenv file but also lets us overide the source not being .env but anything you put
# into the ENV variable DOCKER_SYNC_ENV_FILE
# @return [Object]
def load_dotenv
# TODO: ensure we do this once only
env_file = ENV.fetch('DOCKER_SYNC_ENV_FILE', '.env')
# noinspection RubyResolve
Dotenv.load(env_file)
end
end
end
end
Version data entries
54 entries across 54 versions & 1 rubygems