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我首先使用send.rb向rabbitmq發送100條消息,然後使用rabbitmqctl list_queues
來查看狀態,並且它是100條隊列中的消息。然後我開始recv.rb recv消息,我實際上得到100個消息。爲什麼rabbitmq丟失消息?
然後,我先啓動recv.rb,然後用send.rb發送100條消息,最後我只能得到95條消息。我嘗試了很多次,在這個場合我從來沒有收到過100封郵件。
爲什麼我迷失信息?
recv.rb
require 'amqp'
AMQP.start(:host => '127.0.0.1') do |connection|
channel = AMQP::Channel.new(connection)
queue = channel.queue("test_queue", :durable => true)
Signal.trap("INT") do
connection.close do
EM.stop { exit }
end
end
channel.prefetch(1)
queue.subscribe(:ack => true) do |header, body|
puts body
header.ack # A
end
end
如果我更換# A
行成
EM.add_timer(body.count(".")) do
puts " [x] Done"
header.ack
end
一樣的RabbitMQ-教程,這個腳本崩潰:
/usr/local/lib/ruby/gems/1.9.1/gems/amq-client-0.9.10/lib/amq/client/async/adapter.rb:247:in `send_frame': Trying to send frame through a closed connection. Frame is #<AMQ::Protocol::MethodFrame:0x000000019dc6e0 @payload="\x00<\x00P\x00\x00\x00\x00\x00\x00\x00\x03\x00", @channel=2> (AMQ::Client::ConnectionClosedError)
from /usr/local/lib/ruby/gems/1.9.1/gems/amq-client-0.9.10/lib/amq/client/async/channel.rb:138:in `acknowledge'
from /usr/local/lib/ruby/gems/1.9.1/gems/amqp-0.9.8/lib/amqp/channel.rb:1003:in `acknowledge'
from /usr/local/lib/ruby/gems/1.9.1/gems/amqp-0.9.8/lib/amqp/header.rb:35:in `ack'
from recv.rb:22:in `block (3 levels) in <main>'
from /usr/local/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `call'
from /usr/local/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `run_machine'
from /usr/local/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in `run'
from /usr/local/lib/ruby/gems/1.9.1/gems/amqp-0.9.8/lib/amqp/connection.rb:38:in `start'
from recv.rb:5:in `<main>'
你可以發佈你的send.rb嗎?只看到照片的一面很難診斷。 – charleyc 2013-02-21 08:24:35