stockpile-redis¶ ↑

code

github.com/halostatue/stockpile-redis/

bugs

github.com/halostatue/stockpile-redis/issues

continuous integration

<img src=“https://travis-ci.org/halostatue/stockpile-redis.svg?branch=master” alt=“Build Status” />

stockpile-redis is a connection manager for Redis to be used with Stockpile.

stockpile-redis supports both normal Redis connections (Redis.new), and Redis::Namespace connections (Redis::Namespace.new('namespace', redis: Redis.new)).

stockpile-redis provides special-case handling for connections for Resque when the name of the client is :resque.

Release 2.0 fixes an issue with initialization using OpenStruct for options. Ruby 1.9 is no longer supported.

require 'stockpile/redis'

wide = Stockpile.new(manager: Stockpile::Redis) # A Stockpile to Redis.
wide.connection.set('hello', 'world') # => 'OK'
wide.connection.get('hello') # => 'world'

# Connections are independent from one another.
wide.connection_for(:other) != wide.connection # => true

# A 'narrow' Stockpile to Redis.
narrow = Stockpile.new(manager: Stockpile::Redis, narrow: true)
# Or set ENV['STOCKPILE_CONNECTION_WIDTH'] = 'narrow' and call Stockpile.new
# normally.
narrow.connection_for(:other) == narrow.connection # => true

# Special Redis::Namespace handling for Resque clients.
narrow.connection_for(:resque) != narrow.connection # => true
narrow.connection_for(:resque).redis == narrow.connection # => true

# Standard namespace handling.
narrow.connection_for(:other, namespace: 'other') !=
  narrow.connection # => true
narrow.connection_for(:other, namespace: 'other').redis !=
  narrow.connection # => true

# Show a Stockpile with no adapter capabilities, but name the method
# stockpile, not cache. This will still usefully manage connections.
# The use of inject_redis! makes Stockpile::Redis the default connection
# manager for the Cacher module Stockpile.
module Cacher
  Stockpile.inject_redis!(self, method: :stockpile, adaptable: false)
end
Cacher.respond_to?(:stockpile) # => true
Cacher.respond_to?(:stockpile_adapter) # => false
Cacher.stockpile.connection.set('hello', 'world') # => 'OK'
Cacher.stockpile.connection.get('hello') # => 'world'

# Now a Stockpile with adapter capabilities.
module Jobber
  module LastRunTime
    def last_run_time(key, value = nil)
      if value
        connection.hset(__method__, key, value.utc.iso8601)
      else
        value = connection.hget(__method__, key)
        Time.parse(value) if value
      end
    end
  end

  Stockpile.inject_redis!(self)
end
Jobber.respond_to?(:cache) # => true
Jobber.respond_to?(:cache_adapter) # => true

# Four ways:
# 1. Adapt Jobber.cache to recognize #last_run_time.
Jobber.cache_adapter(Jobber::LastRunTime)
Jobber.cache.last_run_time('hello', t = Time.now) # => true
Jobber.cache.last_run_time('hello') # => approximately t

# 2. Adapt Jobber.cache and another module to recognize #last_run_time.
module Foo; end
Jobber.cache_adapter(Jobber::LastRunTime, Foo)
Foo.last_run_time('hello', t = Time.now) # => true
Foo.last_run_time('hello') # => approximately t

# 3. Adapt Jobber.cache and Jobber to recognize #last_run_time.
Jobber.cache_adapter(Jobber::LastRunTime, Jobber)
Jobber.last_run_time('hello', t = Time.now) # => true
Jobber.last_run_time('hello') # => approximately t

# 4. Adapt Jobber.cache and Jobber::LastRunTime to recognize #last_run_time.
Jobber.cache_adapter!(Jobber::LastRunTime)
# or Jobber.cache_adapter(Jobber::LastRunTime, Jobber::LastRunTime)
Jobber::LastRunTime.last_run_time('hello', t = Time.now) # => true
Jobber::LastRunTime.last_run_time('hello') # => approximately t

Put stockpile-redis in your Gemfile:

gem 'stockpile-redis', '~> 2.0'

Or manually install:

% gem install stockpile-redis

and require Stockpile in your code:

require 'stockpile/redis'

stockpile-redis uses a Semantic Versioning scheme with one change:

• When PATCH is zero (0), it will be omitted from version references.

:include: Contributing.rdoc

:include: Licence.rdoc