Class: Tml::CacheAdapters::Cdn

Inherits:
Tml::Cache show all
Defined in:
lib/tml/cache_adapters/cdn.rb

Overview

– Copyright © 2015 Translation Exchange, Inc

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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ++

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Tml::Cache

#cached_by_source?, #enabled?, #info, #reset_version, #update_version, #upgrade_version, #version, #versioned_key, #warn

Class Method Details

.cache ⇒ Object 



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# File 'lib/tml/cache_adapters/cdn.rb', line 35

def self.cache
  @cache ||= {}
end

.cache_path ⇒ Object 



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# File 'lib/tml/cache_adapters/cdn.rb', line 39

def self.cache_path
  "#{Tml.config.cache[:base_url]}/#{Tml.config.cache[:version]}"
end

.cdn_path(key) ⇒ Object 



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# File 'lib/tml/cache_adapters/cdn.rb', line 43

def self.cdn_path(key)
  File.join(cache_path, "#{key}.json")
end

Instance Method Details

#cache_name ⇒ Object 



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# File 'lib/tml/cache_adapters/cdn.rb', line 47

def cache_name
  'cdn'
end

#clear(opts = {}) ⇒ Object 



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# File 'lib/tml/cache_adapters/cdn.rb', line 93

def clear(opts = {})
  warn('This is a readonly cache')
end

#delete(key, opts = {}) ⇒ Object 



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# File 'lib/tml/cache_adapters/cdn.rb', line 85

def delete(key, opts = {})
  warn('This is a readonly cache')
end

#exist?(key, opts = {}) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tml/cache_adapters/cdn.rb', line 89

def exist?(key, opts = {})
  File.exists?(self.class.file_path(key))
end

#fetch(key, opts = {}) ⇒ Object 



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# File 'lib/tml/cache_adapters/cdn.rb', line 56

def fetch(key, opts = {})
  if self.class.cache[key]
    info("Memory hit: #{key}")
    return self.class.cache[key]
  end

  path = self.class.cdn_path(key)


  # load data from cdn


  if File.exists?(path)
    info("Cache hit: #{key}")
    self.class.cache[key] = JSON.parse(File.read(path))
    return self.class.cache[key]
  end

  info("Cache miss: #{key}")

  return nil unless block_given?

  yield
end

#read_only? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tml/cache_adapters/cdn.rb', line 97

def read_only?
  true
end

#segmented? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tml/cache_adapters/cdn.rb', line 51

def segmented?
  return true if Tml.config.cache[:segmented].nil?
  Tml.config.cache[:segmented]
end

#store(key, data, opts = {}) ⇒ Object 



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# File 'lib/tml/cache_adapters/cdn.rb', line 81

def store(key, data, opts = {})
  warn('This is a readonly cache')
end