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# encoding: UTF-8
# frozen_string_literal: true
require 'stringio'
class Riddle::Configuration::Parser
SOURCE_CLASSES = {
'mysql' => Riddle::Configuration::SQLSource,
'pgsql' => Riddle::Configuration::SQLSource,
'mssql' => Riddle::Configuration::SQLSource,
'xmlpipe' => Riddle::Configuration::XMLSource,
'xmlpipe2' => Riddle::Configuration::XMLSource,
'odbc' => Riddle::Configuration::SQLSource,
'tsvpipe' => Riddle::Configuration::TSVSource
}
INDEX_CLASSES = {
'plain' => Riddle::Configuration::Index,
'distributed' => Riddle::Configuration::DistributedIndex,
'rt' => Riddle::Configuration::RealtimeIndex,
'template' => Riddle::Configuration::TemplateIndex
}
def initialize(input)
@input = input
end
def parse!
set_common
set_indexer
set_searchd
set_sources
set_indices
add_orphan_sources
configuration
end
private
def add_orphan_sources
all_names = sources.keys
attached_names = configuration.indices.collect { |index|
index.respond_to?(:sources) ? index.sources.collect(&:name) : []
}.flatten
(all_names - attached_names).each do |name|
configuration.sources << sources[name]
end
end
def inner
@inner ||= InnerParser.new(@input).parse!
end
def configuration
@configuration ||= Riddle::Configuration.new
end
def sources
@sources ||= {}
end
def each_with_prefix(prefix)
inner.keys.select { |key| key[/^#{prefix}\s+/] }.each do |key|
yield key.gsub(/^#{prefix}\s+/, '').gsub(/\s*\{$/, ''), inner[key]
end
end
def set_common
set_settings configuration.common, inner['common'] || {}
end
def set_indexer
set_settings configuration.indexer, inner['indexer'] || {}
end
def set_searchd
set_settings configuration.searchd, inner['searchd'] || {}
end
def set_sources
each_with_prefix 'source' do |name, settings|
names = name.split(/\s*:\s*/)
types = settings.delete('type')
parent = names.length > 1 ? names.last : nil
types ||= [sources[parent].type] if parent
type = types.first
source = SOURCE_CLASSES[type].new names.first, type
source.parent = parent
set_settings source, settings
sources[source.name] = source
end
end
def set_indices
each_with_prefix 'index' do |name, settings|
names = name.split(/\s*:\s*/)
type = (settings.delete('type') || ['plain']).first
index = INDEX_CLASSES[type].new names.first
index.parent = names.last if names.length > 1
(settings.delete('source') || []).each do |source_name|
index.sources << sources[source_name]
end
set_settings index, settings
configuration.indices << index
end
end
def set_settings(object, hash)
hash.each do |key, values|
values.each do |value|
set_setting object, key, value
end
end
end
def set_setting(object, key, value)
if object.send(key).is_a?(Array)
object.send(key) << value
else
object.send "#{key}=", value
end
end
class InnerParser
SETTING_PATTERN = /^(\w+)\s*=\s*(.*)$/
EndOfFileError = Class.new StandardError
def initialize(input)
@stream = StringIO.new(input.gsub("\\\n", ''))
@sections = {}
end
def parse!
while label = next_line do
@sections[label] = next_settings
end
@sections
rescue EndOfFileError
@sections
end
private
def next_line
line = @stream.gets
raise EndOfFileError if line.nil?
line = line.strip
(line.empty? || line[/^#/]) ? next_line : line
end
def next_settings
settings = Hash.new { |hash, key| hash[key] = [] }
line = ''
while line.empty? || line == '{' do
line = next_line
end
while line != '}' do
begin
match = SETTING_PATTERN.match(line)
unless match.nil?
key, value = *match.captures
settings[key] << value
while value[/\\$/] do
value = next_line
settings[key].last << "\n" << value
end
end
rescue => error
raise error, "Error handling line '#{line}': #{error.message}",
error.backtrace
end
line = next_line
end
settings
end
end
end
|
