Class: RServiceBus::SubscriptionStorage_Redis

Inherits:
SubscriptionStorage show all
Defined in:
lib/rservicebus/subscription_storage/redis.rb

Overview

Implementation of Subscription Storage to Redis

Instance Method Summary collapse

Methods inherited from SubscriptionStorage

#get_all

Constructor Details

#initialize(appName, uri) ⇒ SubscriptionStorage_Redis

Constructor



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# File 'lib/rservicebus/subscription_storage/redis.rb', line 14

def initialize( appName, uri )
  super(appName, uri)
       port = uri.port.nil? ? 6379 : uri.port
  @redis = Redis.new( :host=>uri.host, :port=>port )
end

Instance Method Details

#add(eventName, queueName) ⇒ Object 



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# File 'lib/rservicebus/subscription_storage/redis.rb', line 43

def add( eventName, queueName )
  content = @redis.get( @appName + '.Subscriptions')
  if content.nil? then
    subscriptions = Hash.new
  else
    subscriptions = YAML::load(content)
  end

  if subscriptions[eventName].nil? then
    subscriptions[eventName] = Array.new
  end
  
  subscriptions[eventName] << queueName
  subscriptions[eventName] = subscriptions[eventName].uniq

  @redis.set( @appName + '.Subscriptions', YAML::dump(subscriptions ) )

  return subscriptions
end

#getAll ⇒ Object 



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# File 'lib/rservicebus/subscription_storage/redis.rb', line 20

def getAll
  RServiceBus.log 'Load subscriptions'
  begin
    content = @redis.get( @appName + '.Subscriptions')
    if content.nil? then
      subscriptions = Hash.new
    else
      subscriptions = YAML::load(content)
    end
    return subscriptions
  rescue Exception => e
    puts 'Error connecting to redis'
    if e.message == 'Redis::CannotConnectError' ||
        e.message == 'Redis::ECONNREFUSED' then
      puts '***Most likely, redis is not running. Start redis, and try running this again.'
    else
      puts e.message
      puts e.backtrace
    end
    abort()
  end
end

#remove(eventName, queueName) ⇒ Object 



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# File 'lib/rservicebus/subscription_storage/redis.rb', line 63

def remove( eventName, queueName )
  raise 'Method, remove, needs to be implemented for this subscription storage'
end