/usr/share/doc/ruby-amqp/examples/error_handling/manual_connection_and_channel_recovery.rb is in ruby-amqp 0.9.5-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | #!/usr/bin/env ruby
# encoding: utf-8
require "bundler"
Bundler.setup
$:.unshift(File.expand_path("../../../lib", __FILE__))
require 'amqp'
class ConnectionInterruptionHandler
#
# API
#
def handle(connection)
puts "[network failure] Connection #{connection} detected connection interruption"
end
end
puts "=> Example of AMQP connection & channel recovery API in action"
puts
AMQP.start(:host => "localhost") do |connection, open_ok|
unless connection.auto_recovering?
puts "Connection IS NOT auto-recovering..."
end
ch1 = AMQP::Channel.new(connection)
ch1.on_error do |ch, channel_close|
raise channel_close.reply_text
end
unless ch1.auto_recovering?
puts "Channel #{ch1.id} IS NOT auto-recovering"
end
ch1.on_connection_interruption do |c|
puts "[network failure] Channel #{c.id} reacted to connection interruption"
end
ch1.on_recovery do |c|
puts "[recovery] Channel #{c.id} has recovered"
end
connection.on_tcp_connection_loss do |conn, settings|
puts "[network failure] Trying to reconnect..."
conn.reconnect(false, 2)
end
handler = ConnectionInterruptionHandler.new
connection.on_connection_interruption(&handler.method(:handle))
connection.on_recovery do |conn, settings|
puts "[recovery] Connection has recovered"
end
show_stopper = Proc.new {
connection.disconnect { puts "Disconnected. Exiting…"; EventMachine.stop }
}
Signal.trap "TERM", show_stopper
Signal.trap "INT", show_stopper
EM.add_timer(30, show_stopper)
puts "Connected, authenticated. To really exercise this example, shut AMQP broker down for a few seconds. If you don't it will exit gracefully in 30 seconds."
end
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