Class: AtomicCache::Storage::Memory

Inherits:
Store
  • Object
show all
Defined in:
lib/atomic_cache/storage/memory.rb

Overview

An abstract storage adapter which keeps all values in memory

Direct Known Subclasses

InstanceMemory, SharedMemory

Instance Method Summary collapse

Instance Method Details

#add(raw_key, new_value, ttl, user_options = {}) ⇒ Object 



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# File 'lib/atomic_cache/storage/memory.rb', line 17

def add(raw_key, new_value, ttl, user_options={})
  store_op(raw_key, user_options) do |key, options|
    return false if store.has_key?(key) && !ttl_expired?(store[key])
    write(key, new_value, ttl, user_options)
  end
end

#delete(raw_key) ⇒ Object 



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# File 'lib/atomic_cache/storage/memory.rb', line 47

def delete(raw_key)
  store_op(raw_key) do |key, options|
    store.delete(key)
    true
  end
end

#read(raw_key, user_options = {}) ⇒ Object 



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# File 'lib/atomic_cache/storage/memory.rb', line 24

def read(raw_key, user_options={})
  store_op(raw_key, user_options) do |key, options|
    entry = store[key]
    return nil unless entry.present?

    unmarshaled = unmarshal(entry[:value], user_options)
    return unmarshaled if entry[:ttl].nil? or entry[:ttl] == false

    if ttl_expired?(entry)
      store.delete(key)
      nil
    else
      unmarshaled
    end
  end
end

#set(raw_key, new_value, user_options = {}) ⇒ Object 



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# File 'lib/atomic_cache/storage/memory.rb', line 41

def set(raw_key, new_value, user_options={})
  store_op(raw_key, user_options) do |key, options|
    write(key, new_value, options[:expires_in], user_options)
  end
end

#store ⇒ Object

This method is abstract.

implement returning a Hash of the in-memory representation

Raises:

  • (NotImplementedError) 


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# File 'lib/atomic_cache/storage/memory.rb', line 12

def store; raise NotImplementedError end

#store_op(key, user_options = {}) ⇒ Object

This method is abstract.

implement performing an operation on the store

Raises:

  • (NotImplementedError) 


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# File 'lib/atomic_cache/storage/memory.rb', line 15

def store_op(key, user_options={}); raise NotImplementedError end