Class: Fluent::EventRouter::MatchCache

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent/event_router.rb

Constant Summary collapse

MATCH_CACHE_SIZE = 
1024

Instance Method Summary collapse

Constructor Details

#initialize ⇒ MatchCache

Returns a new instance of MatchCache.



120
121
122
123
124
 
# File 'lib/fluent/event_router.rb', line 120

def initialize
  super
  @map = {}
  @keys = []
end

Instance Method Details

#get(key) ⇒ Object 



126
127
128
129
130
131
132
133
134
135
136
137
 
# File 'lib/fluent/event_router.rb', line 126

def get(key)
  if collector = @map[key]
    return collector
  end
  collector = @map[key] = yield
  if @keys.size >= MATCH_CACHE_SIZE
    # expire the oldest key
    @map.delete @keys.shift
  end
  @keys << key
  collector
end