Class: Kafo::ParserCacheReader

Inherits:
Object
  • Object
show all
Defined in:
lib/kafo/parser_cache_reader.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cache) ⇒ ParserCacheReader

Returns a new instance of ParserCacheReader.



28
29
30
 
# File 'lib/kafo/parser_cache_reader.rb', line 28

def initialize(cache)
  @cache = cache
end

Class Method Details

.logger ⇒ Object 



24
25
26
 
# File 'lib/kafo/parser_cache_reader.rb', line 24

def self.logger
  KafoConfigure.logger
end

.new_from_file(cache_path) ⇒ Object 



3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
# File 'lib/kafo/parser_cache_reader.rb', line 3

def self.new_from_file(cache_path)
  if cache_path.nil? || cache_path.empty?
    logger.debug "No parser cache configured in :parser_cache_path, skipping setup"
    return nil
  end

  unless File.exist?(cache_path)
    logger.warn "Parser cache configured at #{cache_path} is missing, skipping setup"
    return nil
  end

  parsed = YAML.load(File.read(cache_path))
  if !parsed.is_a?(Hash) || parsed[:version] != 1 || !parsed[:files].is_a?(Hash)
    logger.warn "Parser cache is from a different version of Kafo, skipping setup"
    return nil
  end

  logger.debug "Using #{cache_path} cache with parsed modules"
  new(parsed)
end

Instance Method Details

#get(key, manifest_path) ⇒ Object 



36
37
38
39
40
41
42
43
44
45
 
# File 'lib/kafo/parser_cache_reader.rb', line 36

def get(key, manifest_path)
  return nil unless @cache[:files].has_key?(key)

  if @cache[:files][key][:mtime] && File.mtime(manifest_path).to_i > @cache[:files][key][:mtime]
    logger.debug "Parser cache for #{manifest_path} is outdated, ignoring cache entry"
    return nil
  end

  @cache[:files][key][:data]
end

#logger ⇒ Object 



32
33
34
 
# File 'lib/kafo/parser_cache_reader.rb', line 32

def logger
  KafoConfigure.logger
end