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# This class allows you to configure how Geocoder should treat errors that occur when
# the cache is not available.
# Configure it like this
# config/initializers/geocoder.rb
# Geocoder.configure(
# :cache => Geocoder::CacheBypass.new(Redis.new)
# )
#
# Depending on the value of @bypass this will either
# raise the exception (true) or swallow it and pretend the cache did not return a hit (false)
#
class Geocoder::CacheBypass
def initialize(target, bypass = true)
@target = target
@bypass = bypass
end
def [](key)
with_bypass { @target[key] }
end
def []=(key, value)
with_bypass(value) { @target[key] = value }
end
def keys
with_bypass([]) { @target.keys }
end
def del(key)
with_bypass { @target.del(key) }
end
private
def with_bypass(return_value_if_exception = nil, &block)
begin
yield
rescue
if @bypass
return_value_if_exception
else
raise # reraise original exception
end
end
end
end
|
