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# encoding: utf-8
require "spec_helper"
describe "Topic-based subscription" do
#
# Environment
#
include EventedSpec::AMQPSpec
include EventedSpec::SpecHelper
em_before { AMQP.cleanup_state }
em_after { AMQP.cleanup_state }
default_options AMQP_OPTS
default_timeout 10
amqp_before do
@channel = AMQP::Channel.new
@channel.should be_open
@exchange = @channel.topic
end
after(:all) do
AMQP.cleanup_state
done
end
#
# Examples
#
context "when keys match exactly" do
it "routes messages to bound queues" do
@aapl_queue = @channel.queue("AAPL queue", :auto_delete => true)
@amzn_queue = @channel.queue("AMZN queue", :auto_delete => true)
received_messages = {
@aapl_queue.name => 0,
@amzn_queue.name => 0
}
expected_messages = {
@aapl_queue.name => 4,
@amzn_queue.name => 2
}
@aapl_queue.bind(@exchange, :key => "nasdaq.aapl").subscribe do |payload|
received_messages[@aapl_queue.name] += 1
end
@amzn_queue.bind(@exchange, :key => "nasdaq.amzn").subscribe do |payload|
received_messages[@amzn_queue.name] += 1
end
4.times do
@exchange.publish(332 + rand(1000)/400.0, :key => "nasdaq.aapl")
end
2.times do
@exchange.publish(181 + rand(1000)/400.0, :key => "nasdaq.amzn")
end
# publish some messages none of our queues should be receiving
3.times do
@exchange.publish(626 + rand(1000)/400.0, :key => "nasdaq.goog")
end
done(0.5) {
received_messages.should == expected_messages
@aapl_queue.unsubscribe
@amzn_queue.unsubscribe
}
end # it
end # context
context "when key matches on * (single word globbing)" do
it "routes messages to bound queues" do
@nba_queue = @channel.queue("NBA queue", :auto_delete => true)
@knicks_queue = @channel.queue("New York Knicks queue", :auto_delete => true)
@celtics_queue = @channel.queue("Boston Celtics queue", :auto_delete => true)
received_messages = {
@nba_queue.name => 0,
@knicks_queue.name => 0,
@celtics_queue.name => 0
}
expected_messages = {
@nba_queue.name => 7,
@knicks_queue.name => 2,
@celtics_queue.name => 3
}
@nba_queue.bind(@exchange, :key => "sports.nba.*").subscribe do |payload|
received_messages[@nba_queue.name] += 1
end
@knicks_queue.bind(@exchange, :key => "sports.nba.knicks").subscribe do |payload|
received_messages[@knicks_queue.name] += 1
end
@celtics_queue.bind(@exchange, :key => "sports.nba.celtics").subscribe do |payload|
received_messages[@celtics_queue.name] += 1
end
@exchange.publish("Houston Rockets 104 : New York Knicks 89", :key => "sports.nba.knicks")
@exchange.publish("Phoenix Suns 129 : New York Knicks 121", :key => "sports.nba.knicks")
@exchange.publish("Ray Allen hit a 21-foot jumper with 24.5 seconds remaining on the clock to give Boston a win over Detroit last night in the TD Garden", :key => "sports.nba.celtics")
@exchange.publish("Garnett's Return Sparks Celtics Over Magic at Garden", :key => "sports.nba.celtics")
@exchange.publish("Tricks of the Trade: Allen Reveals Magic of Big Shots", :key => "sports.nba.celtics")
@exchange.publish("Blatche, Wall lead Wizards over Jazz 108-101", :key => "sports.nba.jazz")
@exchange.publish("Deron Williams Receives NBA Cares Community Assist Award", :key => "sports.nba.jazz")
done(0.6) {
received_messages.should == expected_messages
@nba_queue.unsubscribe
@knicks_queue.unsubscribe
@celtics_queue.unsubscribe
}
end # it
end # context
context "when key matches on # (multiple words globbing)" do
it "routes messages to bound queues" do
@sports_queue = @channel.queue("Sports queue", :auto_delete => true)
@nba_queue = @channel.queue("NBA queue", :auto_delete => true)
@knicks_queue = @channel.queue("New York Knicks queue", :auto_delete => true)
@celtics_queue = @channel.queue("Boston Celtics queue", :auto_delete => true)
received_messages = {
@sports_queue.name => 0,
@nba_queue.name => 0,
@knicks_queue.name => 0,
@celtics_queue.name => 0
}
expected_messages = {
@sports_queue.name => 9,
@nba_queue.name => 7,
@knicks_queue.name => 2,
@celtics_queue.name => 3
}
@sports_queue.bind(@exchange, :key => "sports.#").subscribe do |payload|
received_messages[@sports_queue.name] += 1
end
@nba_queue.bind(@exchange, :key => "*.nba.*").subscribe do |payload|
received_messages[@nba_queue.name] += 1
end
@knicks_queue.bind(@exchange, :key => "sports.nba.knicks").subscribe do |payload|
received_messages[@knicks_queue.name] += 1
end
@celtics_queue.bind(@exchange, :key => "#.celtics").subscribe do |payload|
received_messages[@celtics_queue.name] += 1
end
@exchange.publish("Houston Rockets 104 : New York Knicks 89", :key => "sports.nba.knicks")
@exchange.publish("Phoenix Suns 129 : New York Knicks 121", :key => "sports.nba.knicks")
@exchange.publish("Ray Allen hit a 21-foot jumper with 24.5 seconds remaining on the clock to give Boston a win over Detroit last night in the TD Garden", :key => "sports.nba.celtics")
@exchange.publish("Garnett's Return Sparks Celtics Over Magic at Garden", :key => "sports.nba.celtics")
@exchange.publish("Tricks of the Trade: Allen Reveals Magic of Big Shots", :key => "sports.nba.celtics")
@exchange.publish("Blatche, Wall lead Wizards over Jazz 108-101", :key => "sports.nba.jazz")
@exchange.publish("Deron Williams Receives NBA Cares Community Assist Award", :key => "sports.nba.jazz")
@exchange.publish("Philadelphia's Daniel Briere has been named as an All-Star replacement for Jarome Iginla.", :key => "sports.nhl.allstargame")
@exchange.publish("Devils blank Sid- and Malkin-less Penguins 2-0", :key => "sports.nhl.penguins")
done(0.5) {
received_messages.should == expected_messages
@sports_queue.unsubscribe
@nba_queue.unsubscribe
@knicks_queue.unsubscribe
@celtics_queue.unsubscribe
}
end # it
end # context
end # describe
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