在ruby-smpp中用Eventmachine和EM-Redis發送郵件

Question

我試圖用ruby-smpp發送短信。繼工程實例和一些研究em-redis and eventmachine，我有以下gateway.rb配置：

loop do 
    EventMachine::run do    
    @@tx = EventMachine::connect(
     config[:host], 
     config[:port], 
     Smpp::Transceiver, 
     config, 
     self # delegate that will receive callbacks on MOs and DRs and other events 
    ) 

    MessageSender.next  # gets the messages from redis list and sends at each click of the EventMachine 

    end 
    puts "Disconnected. Reconnecting in 5 seconds.." 
    sleep 5 
end 

messageSender，和將在該模塊：

module MessageSender 

    def self.redis 
    @redis ||= EM::Hiredis.connect 
    end 

    def self.next 
    redis.blpop("company-out", 0) do |item| 
     if item[1] 
     message_hashed = JSON.parse(item[1]) 
     CompanyGateway.send_mt(message_hashed["from"], 
           message_hashed["to"], 
           message_hashed["message"]) 
     end  
     EM.next_tick(&method(:next)) 
    end  
    end 

end 

什麼工作：我啓動網關並連接到SMSC模擬器。我將消息添加到redis列表中，並且發送得很好。 什麼突破：現在已經有值在Redis的列表，並與下面的錯誤運行gateway.rb遊：

Exception in SMS Gateway: Transceiver is unbound. Cannot send MT messages. at /vagrant/lib/ruby-smpp/lib/smpp/transceiver.rb:28:in `send_mt' 
/vagrant/lib/ruby-smpp/gateways/ucellgate.rb:87:in `send_mt' 
/vagrant/lib/ruby-smpp/gateways/ucellgate.rb:66:in `block in next' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/em-hiredis-0.1.0/lib/em-hiredis/client.rb:149:in `block in method_missing' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/eventmachine-0.12.10/lib/em/deferrable.rb:134:in `call' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/eventmachine-0.12.10/lib/em/deferrable.rb:134:in `set_deferred_status' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/eventmachine-0.12.10/lib/em/deferrable.rb:173:in `succeed' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/em-hiredis-0.1.0/lib/em-hiredis/client.rb:75:in `block in connect' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/em-hiredis-0.1.0/lib/em-hiredis/event_emitter.rb:8:in `call' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/em-hiredis-0.1.0/lib/em-hiredis/event_emitter.rb:8:in `block in emit' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/em-hiredis-0.1.0/lib/em-hiredis/event_emitter.rb:8:in `each' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/em-hiredis-0.1.0/lib/em-hiredis/event_emitter.rb:8:in `emit' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/em-hiredis-0.1.0/lib/em-hiredis/connection.rb:21:in `receive_data' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine' 
/home/vagrant/.rvm/gems/ruby-1.9.2-p290/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run' 
/vagrant/lib/ruby-smpp/gateways/ucellgate.rb:103:in `block in start' 
/vagrant/lib/ruby-smpp/gateways/ucellgate.rb:102:in `loop' 
/vagrant/lib/ruby-smpp/gateways/ucellgate.rb:102:in `start' 
/vagrant/lib/ruby-smpp/gateways/ucellgate.rb:186:in `<main>' 

我希望能夠不管運行Redis的列表的網關是空的或沒有，發送存儲的消息和將來到達列表中的消息。有什麼建議？

Answer 1

這看起來不像redis問題。異常來自CompanyGateway.send_mt。我的猜測是，當你在redis隊列中啓動項目時，你會嘗試在連接完成之前發送消息。

您可以嘗試在EM.add_timer（5）{MessageSender.next}中包裝初始MessageSender.next調用，以便將初始呼叫延遲幾秒以允許連接完成。