class SgtnClient::Core::Cache
Constants
- Entry
Public Class Methods
clear()
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# File lib/sgtn-client/core/cache.rb, line 68 def self.clear @mutex.synchronize do if @@data == nil return nil end SgtnClient.logger.debug "[Cache][clear]clear cache!" @@data = Hash.new end end
delete(key)
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# File lib/sgtn-client/core/cache.rb, line 58 def self.delete(key) @mutex.synchronize do if @@data == nil return nil end SgtnClient.logger.debug "[Cache][delete]delete cache for key: " + key @@data.delete key end end
get(key)
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# File lib/sgtn-client/core/cache.rb, line 30 def self.get(key) if @@data == nil return nil, nil end SgtnClient.logger.debug "[Cache][get]get cache for key: " + key invalidate(key) end
has(key)
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# File lib/sgtn-client/core/cache.rb, line 38 def self.has(key) if @@data == nil return nil end SgtnClient.logger.debug "[Cache][has]check if the cache has key: #{(@@data.has_key? key)}" @@data.has_key? key end
initialize(disabled=false, opts={})
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# File lib/sgtn-client/core/cache.rb, line 10 def self.initialize(disabled=false, opts={}) @@opts = opts @mutex = Mutex.new if disabled == false @@data = Hash.new SgtnClient.logger.debug "[Cache][initialize]cache is enabled!" else @@data = nil SgtnClient.logger.debug "[Cache][initialize]cache is disabled!" end end
invalidate(key)
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# File lib/sgtn-client/core/cache.rb, line 78 def self.invalidate(key) @mutex.synchronize do if @@data == nil return nil, nil end SgtnClient.logger.debug "[Cache][invalidate]invalidate expired cache......" now = Time.now if has(key) v = @@data[key] expired = false SgtnClient.logger.debug "[Cache][invalidate]check cache: key=#{key}, expiredtime=#{v[:expiry]}, now=#{now}, expired=#{(v[:expiry] < now)}" if v[:expiry] < now SgtnClient.logger.debug "[Cache][invalidate]before deleting the cache: data=#{@@data}" @@data.delete(key) SgtnClient.logger.debug "[Cache][invalidate]after deleting the cache: data=#{@@data}" expired = true end return expired, v[:value] else return nil, nil end end end
keys()
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# File lib/sgtn-client/core/cache.rb, line 22 def self.keys if @@data == nil return nil end SgtnClient.logger.debug "[Cache][keys]get cache keys" @@data.keys end
put(key, value, ttl=nil)
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# File lib/sgtn-client/core/cache.rb, line 46 def self.put(key, value, ttl=nil) @mutex.synchronize do if @@data == nil || value == nil return nil end ttl ||= @@opts[:ttl] # hours from new SgtnClient.logger.debug "[Cache][put]put cache for key '" + key + "' with expired time at'" + (Time.now + ttl*60).to_s @@data[key] = Entry.new(Time.now + ttl*60, value) end end