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Contents
module DaemonKit
# Simplify simple config file loading for daemons. Assumes the
# config files all live in DAEMON_ROOT/config and are YAML
# files. Loaded configs are accessed like a hash with string
# keys.
#
# Config files can either be keyed by environment (default behavior)
# or be a normal hash.
#
# Load a config by passing the filename (with or without the .yml
# extension) to #load.
#
# At this stage the configs are read-only.
#
# Any of the keys can be called as methods as well.
class Config
class << self
# Load the +config+.yml file from DAEMON_ROOT/config
def load( config )
config = config.to_s
config += '.yml' unless config =~ /\.yml$/
path = File.join( DAEMON_ROOT, 'config', config )
raise ArgumentError, "Can't find #{path}" unless File.exists?( path )
new( YAML.load_file( path ) )
end
# Return the +config+.yml file as a raw hash.
def hash( config, symbolize = false )
self.load( config ).to_h( symbolize )
end
end
# Expects a hash, looks for DAEMON_ENV key
def initialize( config_data ) #:nodoc:
if config_data.has_key?( DAEMON_ENV )
@data = config_data[ DAEMON_ENV ]
else
@data = config_data
end
end
# Pick out a config by name
def []( key )
@data[ key.to_s ]
end
# Return the internal hash structure used, optionally symbolizing
# the first level of keys in the hash
def to_h( symbolize = false )
symbolize ? @data.inject({}) { |m,c| m[c[0].to_sym] = c[1]; m } : @data
end
def method_missing( method_name, *args ) #:nodoc:
# don't match setters
unless method_name.to_s =~ /[\w_]+=$/
# pick a key if we have it
return @data[ method_name.to_s ] if @data.keys.include?( method_name.to_s )
end
super
end
end
end
Version data entries
11 entries across 11 versions & 2 rubygems