Module: Moneta

Defined in:
lib/moneta.rb,
lib/moneta/lock.rb,
lib/moneta/cache.rb,
lib/moneta/proxy.rb,
lib/moneta/stack.rb,
lib/moneta/logger.rb,
lib/moneta/mixins.rb,
lib/moneta/server.rb,
lib/moneta/shared.rb,
lib/moneta/builder.rb,
lib/moneta/expires.rb,
lib/moneta/version.rb,
lib/moneta/wrapper.rb,
lib/moneta/transformer.rb,
lib/moneta/adapters/dbm.rb,
lib/moneta/adapters/fog.rb,
lib/moneta/optionmerger.rb,
lib/moneta/adapters/file.rb,
lib/moneta/adapters/gdbm.rb,
lib/moneta/adapters/null.rb,
lib/moneta/adapters/riak.rb,
lib/moneta/adapters/sdbm.rb,
lib/moneta/adapters/yaml.rb,
lib/moneta/adapters/couch.rb,
lib/moneta/adapters/hbase.rb,
lib/moneta/adapters/mongo.rb,
lib/moneta/adapters/redis.rb,
lib/moneta/adapters/client.rb,
lib/moneta/adapters/cookie.rb,
lib/moneta/adapters/memory.rb,
lib/moneta/adapters/pstore.rb,
lib/moneta/adapters/sequel.rb,
lib/moneta/adapters/sqlite.rb,
lib/moneta/adapters/leveldb.rb,
lib/moneta/adapters/lruhash.rb,
lib/moneta/adapters/cassandra.rb,
lib/moneta/adapters/memcached.rb,
lib/moneta/transformer/config.rb,
lib/moneta/transformer/helper.rb,
lib/moneta/adapters/datamapper.rb,
lib/moneta/adapters/activerecord.rb,
lib/moneta/adapters/tokyocabinet.rb,
lib/moneta/adapters/localmemcache.rb,
lib/moneta/adapters/memcached/dalli.rb,
lib/moneta/adapters/memcached/native.rb

Defined Under Namespace

Modules: Adapters, Defaults, HashAdapter, IncrementSupport, Net, OptionSupport Classes: Builder, Cache, Expires, Lock, Logger, OptionMerger, Proxy, Server, Shared, Stack, Transformer, Wrapper

Constant Summary collapse

VERSION =

Moneta version number

'0.7.2'

Class Method Summary collapse

Class Method Details

.build(&block) ⇒ Moneta store

Configure your own Moneta proxy stack!

Examples:

Moneta builder

Moneta.build do
  use :Expires
  adapter :Memory
end

Returns:

  • (Moneta store) —

    newly created Moneta store



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# File 'lib/moneta.rb', line 139

def self.build(&block)
  Builder.new(&block).build.last
end

.new(name, options = {}) ⇒ Moneta store

Create new Moneta store with default proxies

This works in most cases if you don’t want fine control over the proxy stack. It uses Marshal on the keys and values. Use Moneta#build if you want to have fine control!

Supported adapters:

  • :HashFile (Store which spreads the entries using a md5 hash, e.g. cache/42/391dd7535aebef91b823286ac67fcd)

  • :File (normal file store)

  • :Memcached (Memcached store)

  • … (All other adapters from Moneta::Adapters)

Parameters:

  • name (Symbol) —

    Name of adapter (See Moneta::Adapters)

  • options (Hash) (defaults to: {})

Options Hash (options):

  • :expires (Boolean/Integer) —

    Ensure that store supports expiration by inserting ‘Moneta::Expires` if the underlying adapter doesn’t support it natively and set default expiration time

  • :threadsafe (Boolean) — default: false —

    Ensure that the store is thread safe by inserting Moneta::Lock

  • :logger (Boolean/Hash) — default: false —

    Add logger to proxy stack (Hash is passed to logger as options)

  • :compress (Boolean/Symbol) — default: false —

    If true, compress value with zlib, or specify custom compress, e.g. :quicklz

  • :serializer (Symbol) — default: :marshal —

    Serializer used for key and value, disable with nil

  • :key_serializer (Symbol) — default: options[:serializer] —

    Serializer used for key, disable with nil

  • :value_serializer (Symbol) — default: options[:serializer] —

    Serializer used for value, disable with nil

  • :prefix (String) —

    Key prefix used for namespacing (default none)

  • All (Object) —

    other options passed to the adapter

Returns:

  • (Moneta store) —

    newly created Moneta store

Raises:

  • (ArgumentError) 


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# File 'lib/moneta.rb', line 79

def self.new(name, options = {})
  expires = options.delete(:expires)
  logger = options.delete(:logger)
  threadsafe = options.delete(:threadsafe)
  compress = options.delete(:compress)
  serializer = options.include?(:serializer) ? options.delete(:serializer) : :marshal
  key_serializer = options.include?(:key_serializer) ? options.delete(:key_serializer) : serializer
  value_serializer = options.include?(:value_serializer) ? options.delete(:value_serializer) : serializer
  transformer = { :key => [key_serializer, :prefix], :value => [value_serializer], :prefix => options.delete(:prefix) }
  transformer[:value] << (Symbol === compress ? compress : :zlib) if compress
  raise ArgumentError, 'Name must be Symbol' unless Symbol === name
  case name
  when :Sequel, :ActiveRecord, :Couch, :DataMapper
    # Sequel accept only base64 keys and values
    # FIXME: Couch should work only with :marshal but this raises an error on 1.9
    transformer[:key] << :base64
    transformer[:value] << :base64
  when :Riak
    # Riak accepts only utf-8 keys over the http interface
    # We use base64 encoding therefore.
    transformer[:key] << :base64
  when :Memcached, :MemcachedDalli, :MemcachedNative
    # Memcached supports expires already
    options[:expires] = expires if Integer === expires
    expires = false
  when :PStore, :YAML, :Null
    # For PStore and YAML only the key has to be a string
    transformer.delete(:value) if transformer[:value] == [:marshal]
  when :HashFile
    # Use spreading hashes
    transformer[:key] << :md5 << :spread
    name = :File
  when :File
    # Use escaping
    transformer[:key] << :escape
  when :Cassandra, :Redis
    # Expires already supported
    options[:expires] = expires if Integer === expires
    expires = false
  end
  build do
    use :Logger, Hash === logger ? logger : {} if logger
    use :Expires, :expires => (Integer === expires ? expires : nil) if expires
    use :Transformer, transformer
    use :Lock if threadsafe
    adapter name, options
  end
end