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connection_recovery_spec.rb
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connection_recovery_spec.rb
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require "spec_helper"
require "rabbitmq/http/client"
require "bunny/concurrent/condition"
describe "Connection recovery" do
let(:http_client) { RabbitMQ::HTTP::Client.new("http://127.0.0.1:15672") }
let(:logger) { Logger.new($stderr).tap {|logger| logger.level = ENV["BUNNY_LOG_LEVEL"] || Logger::WARN } }
let(:recovery_interval) { 0.2 }
it "reconnects after grace period" do
with_open do |c|
close_all_connections!
wait_for_recovery_with { connections.any? }
end
end
it "reconnects after grace period (with multiple hosts)" do
with_open_multi_host do |c|
close_all_connections!
wait_for_recovery_with { connections.any? }
end
end
it "reconnects after grace period (with multiple hosts, including a broken one)" do
with_open_multi_broken_host do |c|
close_all_connections!
wait_for_recovery_with { connections.any? }
end
end
it "recovers channels" do
with_open do |c|
ch1 = c.create_channel
ch2 = c.create_channel
sleep 1.5
close_all_connections!
sleep 0.5
poll_until { channels.count == 2 }
expect(ch1).to be_open
expect(ch2).to be_open
end
end
it "provides a recovery completion callback" do
with_open do |c|
latch = Bunny::Concurrent::Condition.new
c.after_recovery_completed do
latch.notify
end
ch = c.create_channel
sleep 1.0
close_all_connections!
poll_until { c.open? && ch.open? }
poll_until { latch.none_threads_waiting? }
end
end
it "recovers channels (with multiple hosts)" do
with_open_multi_host do |c|
ch1 = c.create_channel
ch2 = c.create_channel
sleep 1.5
close_all_connections!
sleep 0.5
poll_until { channels.count == 2 }
expect(ch1).to be_open
expect(ch2).to be_open
end
end
it "recovers channels (with multiple hosts, including a broken one)" do
with_open_multi_broken_host do |c|
ch1 = c.create_channel
ch2 = c.create_channel
sleep 1.5
close_all_connections!
sleep 0.5
poll_until { channels.count == 2 }
expect(ch1).to be_open
expect(ch2).to be_open
end
end
it "recovers basic.qos prefetch setting" do
with_open do |c|
ch = c.create_channel
ch.prefetch(11)
expect(ch.prefetch_count).to eq 11
expect(ch.prefetch_global).to be false
sleep 1.5
close_all_connections!
sleep 0.5
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
expect(ch.prefetch_count).to eq 11
expect(ch.prefetch_global).to be false
end
end
it "recovers basic.qos prefetch global setting" do
with_open do |c|
ch = c.create_channel
ch.prefetch(42, true)
expect(ch.prefetch_count).to eq 42
expect(ch.prefetch_global).to be true
sleep 1.5
close_all_connections!
sleep 0.5
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
expect(ch.prefetch_count).to eq 42
expect(ch.prefetch_global).to be true
end
end
it "recovers publisher confirms setting" do
with_open do |c|
ch = c.create_channel
ch.confirm_select
expect(ch).to be_using_publisher_confirms
sleep 1.5
close_all_connections!
sleep 0.5
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
expect(ch).to be_using_publisher_confirms
end
end
it "recovers transactionality setting" do
with_open do |c|
ch = c.create_channel
ch.tx_select
expect(ch).to be_using_tx
sleep 1.5
close_all_connections!
sleep 0.5
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
expect(ch).to be_using_tx
end
end
it "recovers client-named queues" do
with_open do |c|
ch = c.create_channel
q = ch.queue("bunny.tests.recovery.client-named#{rand}", durable: false)
close_all_connections!
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
ensure_queue_recovery(ch, q)
q.delete
end
end
# a very simplistic test for queues inspired by #422
it "recovers client-named queues declared with no_declare: true" do
with_open do |c|
ch = c.create_channel
ch2 = c.create_channel
n = rand
s = "bunny.tests.recovery.client-named#{n}"
q = ch.queue(s)
q2 = ch2.queue(s, no_declare: true)
close_all_connections!
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
ensure_queue_recovery(ch, q)
q.delete
end
end
# a test for #422
it "recovers client-named queues declared with passive: true" do
with_open do |c|
ch = c.create_channel
ch2 = c.create_channel
n = rand
s = "bunny.tests.recovery.client-named#{n}"
q = ch.queue(s)
q2 = ch2.queue(s, passive: true)
close_all_connections!
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
ensure_queue_recovery(ch, q)
ensure_queue_recovery(ch, q2)
q.delete
end
end
it "recovers server-named queues" do
with_open do |c|
ch = c.create_channel
q = ch.queue("", exclusive: true)
close_all_connections!
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
ensure_queue_recovery(ch, q)
end
end
it "recovers queue bindings" do
with_open do |c|
ch = c.create_channel
x = ch.fanout("amq.fanout")
q = ch.queue("", exclusive: true)
q.bind(x)
close_all_connections!
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
ensure_queue_binding_recovery(ch, x, q)
end
end
it "recovers exchanges and their bindings" do
with_open do |c|
ch = c.create_channel
source = ch.fanout("source.exchange.recovery.example", auto_delete: true)
destination = ch.fanout("destination.exchange.recovery.example", auto_delete: true)
destination.bind(source)
# Exchanges won't get auto-deleted on connection loss unless they have
# had an exclusive queue bound to them.
dst_queue = ch.queue("", exclusive: true)
dst_queue.bind(destination, routing_key: "")
src_queue = ch.queue("", exclusive: true)
src_queue.bind(source, routing_key: "")
close_all_connections!
wait_for_recovery_with { connections.any? && exchange_names_in_vhost("/").include?(source.name) }
ch.confirm_select
source.publish("msg", routing_key: "")
ch.wait_for_confirms
expect(dst_queue.message_count).to eq 1
destination.delete
end
end
it "recovers passively declared exchanges and their bindings" do
with_open do |c|
ch = c.create_channel
ch.confirm_select
source = ch.fanout("amq.fanout", passive: true)
destination = ch.fanout("destination.exchange.recovery.example", auto_delete: true)
destination.bind(source)
# Exchanges won't get auto-deleted on connection loss unless they have
# had an exclusive queue bound to them.
dst_queue = ch.queue("", exclusive: true)
dst_queue.bind(destination, routing_key: "")
src_queue = ch.queue("", exclusive: true)
src_queue.bind(source, routing_key: "")
close_all_connections!
wait_for_recovery_with { connections.any? }
source.publish("msg", routing_key: "")
ch.wait_for_confirms
expect(dst_queue.message_count).to eq 1
destination.delete
end
end
# this is a simplistic test that primarily execises the code path from #412
it "recovers exchanges that were declared with passive = true" do
with_open do |c|
ch = c.create_channel
ch2 = c.create_channel
source = ch.fanout("source.exchange.recovery.example", auto_delete: true)
destination = ch.fanout("destination.exchange.recovery.example", auto_delete: true)
source2 = ch2.fanout("source.exchange.recovery.example", no_declare: true)
destination.bind(source)
# Exchanges won't get auto-deleted on connection loss unless they have
# had an exclusive queue bound to them.
dst_queue = ch.queue("", exclusive: true)
dst_queue.bind(destination, routing_key: "")
src_queue = ch.queue("", exclusive: true)
src_queue.bind(source, routing_key: "")
close_all_connections!
wait_for_recovery_with { connections.any? && exchange_names_in_vhost("/").include?(source.name) }
ch2.confirm_select
source2.publish("msg", routing_key: "")
ch2.wait_for_confirms
expect(dst_queue.message_count).to eq 1
end
end
it "recovers allocated channel ids" do
with_open do |c|
q = "queue#{Bunny::Timestamp.now.to_i}"
10.times { c.create_channel }
expect(c.queue_exists?(q)).to eq false
close_all_connections!
wait_for_recovery_with { channels.any? }
# make sure the connection isn't closed shortly after
# due to "second 'channel.open' seen". MK.
expect(c).to be_open
sleep 0.1
expect(c).to be_open
sleep 0.1
expect(c).to be_open
end
end
it "recovers consumers" do
with_open do |c|
delivered = false
ch = c.create_channel
ch.confirm_select
q = ch.queue("", exclusive: true)
q.subscribe do |_, _, _|
delivered = true
end
close_all_connections!
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
q.publish("")
ch.wait_for_confirms
poll_until { delivered }
end
end
it "recovers all consumers" do
n = 32
with_open do |c|
ch = c.create_channel
q = ch.queue("", exclusive: true)
n.times { q.subscribe { |_, _, _| } }
close_all_connections!
wait_for_recovery_with { connections.any? }
expect(ch).to be_open
sleep 0.5
expect(q.consumer_count).to eq n
end
end
it "recovers all queues" do
n = 32
qs = []
with_open do |c|
ch = c.create_channel
n.times do
qs << ch.queue("", exclusive: true)
end
close_all_connections!
wait_for_recovery_with { queue_names.include?(qs.first.name) }
sleep 0.5
expect(ch).to be_open
qs.each do |q|
ch.queue_declare(q.name, passive: true)
end
end
end
def exchange_names_in_vhost(vhost)
http_client.list_exchanges(vhost).map {|e| e["name"]}
end
def connections
http_client.list_connections
end
def channels
http_client.list_channels
end
def queue_names
http_client.list_queues.map {|q| q["name"]}
end
def close_all_connections!
# let whatever actions were taken before
# this call a chance to propagate, e.g. to make
# sure that connections are accounted for in the
# stats DB.
#
# See bin/ci/before_build for management plugin
# pre-configuration.
#
# MK.
sleep 1.1
connections.each do |conn_info|
close_ignoring_permitted_exceptions(conn_info.name)
end
end
def close_ignoring_permitted_exceptions(connection_name)
http_client.close_connection(connection_name)
rescue Bunny::ConnectionForced, Faraday::ResourceNotFound
# ignored
end
def wait_for_recovery_with(&probe)
poll_until &probe
end
def poll_while(&probe)
Bunny::TestKit.poll_while(&probe)
end
def poll_until(&probe)
Bunny::TestKit.poll_until(&probe)
end
def with_open(c = Bunny.new(network_recovery_interval: recovery_interval,
recover_from_connection_close: true,
logger: logger), &block)
c.start
block.call(c)
ensure
c.close(false) rescue nil
end
def with_open_multi_host(&block)
c = Bunny.new(hosts: ["127.0.0.1", "localhost"],
network_recovery_interval: recovery_interval,
recover_from_connection_close: true,
logger: logger)
with_open(c, &block)
end
def with_open_multi_broken_host(&block)
c = Bunny.new(hosts: ["broken", "127.0.0.1", "localhost"],
hosts_shuffle_strategy: Proc.new { |hosts| hosts }, # We do not shuffle for these tests so we always hit the broken host
network_recovery_interval: recovery_interval,
recover_from_connection_close: true,
logger: logger)
with_open(c, &block)
end
def ensure_queue_recovery(ch, q)
ch.confirm_select
q.purge
x = ch.default_exchange
x.publish("msg", routing_key: q.name)
ch.wait_for_confirms
expect(q.message_count).to eq 1
q.purge
end
def ensure_queue_binding_recovery(ch, x, q, routing_key = "")
ch.confirm_select
q.purge
x.publish("msg", routing_key: routing_key)
ch.wait_for_confirms
expect(q.message_count).to eq 1
q.purge
end
end