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# frozen_string_literal: true
# rubocop:todo all
require 'spec_helper'
describe 'SDAM events' do
let(:subscriber) { Mrss::EventSubscriber.new }
describe 'server closed event' do
it 'is published when client is closed' do
client = ClientRegistry.instance.new_local_client(
SpecConfig.instance.addresses, SpecConfig.instance.test_options)
client.subscribe(Mongo::Monitoring::SERVER_CLOSED, subscriber)
# get the client connected
client.database.command(ping: 1)
expect(subscriber.succeeded_events).to be_empty
client.close
expect(subscriber.succeeded_events).not_to be_empty
event = subscriber.first_event('server_closed_event')
expect(event).not_to be_nil
end
end
describe 'topology closed event' do
it 'is published when client is closed' do
client = ClientRegistry.instance.new_local_client(
SpecConfig.instance.addresses, SpecConfig.instance.test_options)
client.subscribe(Mongo::Monitoring::TOPOLOGY_CLOSED, subscriber)
# get the client connected
client.database.command(ping: 1)
expect(subscriber.succeeded_events).to be_empty
client.close
expect(subscriber.succeeded_events).not_to be_empty
event = subscriber.first_event('topology_closed_event')
expect(event).not_to be_nil
expect(event.topology).to eql(client.cluster.topology)
end
end
describe 'heartbeat event' do
require_topology :single
context 'pre-4.4 servers' do
max_server_version '4.2'
let(:sdam_proc) do
Proc.new do |client|
client.subscribe(Mongo::Monitoring::SERVER_HEARTBEAT, subscriber)
end
end
let(:client) do
new_local_client(SpecConfig.instance.addresses,
# Heartbeat interval is bound by 500 ms
SpecConfig.instance.test_options.merge(
heartbeat_frequency: 0.5,
sdam_proc: sdam_proc
),
)
end
it 'is published every heartbeat interval' do
client
sleep 4
client.close
started_events = subscriber.select_started_events(Mongo::Monitoring::Event::ServerHeartbeatStarted)
# Expect about 8 events, maybe 9 or 7
started_events.length.should >= 6
started_events.length.should <= 10
succeeded_events = subscriber.select_succeeded_events(Mongo::Monitoring::Event::ServerHeartbeatSucceeded)
started_events.length.should > 1
(succeeded_events.length..succeeded_events.length+1).should include(started_events.length)
end
end
context '4.4+ servers' do
min_server_fcv '4.4'
let(:sdam_proc) do
Proc.new do |client|
client.subscribe(Mongo::Monitoring::SERVER_HEARTBEAT, subscriber)
end
end
let(:client) do
new_local_client(SpecConfig.instance.addresses,
# Heartbeat interval is bound by 500 ms
SpecConfig.instance.test_options.merge(
heartbeat_frequency: 0.5,
sdam_proc: sdam_proc
),
)
end
it 'is published up to twice every heartbeat interval' do
client
sleep 3
client.close
started_events = subscriber.select_started_events(
Mongo::Monitoring::Event::ServerHeartbeatStarted
)
# We could have up to 16 events and should have no fewer than 8 events.
# Whenever an awaited hello succeeds while the regular monitor is
# waiting, the regular monitor's next scan is pushed forward.
started_events.length.should >= 6
started_events.length.should <= 18
(started_awaited = started_events.select(&:awaited?)).should_not be_empty
(started_regular = started_events.reject(&:awaited?)).should_not be_empty
completed_events = subscriber.select_completed_events(
Mongo::Monitoring::Event::ServerHeartbeatSucceeded,
Mongo::Monitoring::Event::ServerHeartbeatFailed,
)
completed_events.length.should >= 6
completed_events.length.should <= 18
(succeeded_awaited = completed_events.select(&:awaited?)).should_not be_empty
(succeeded_regular = completed_events.reject(&:awaited?)).should_not be_empty
# There may be in-flight hellos that don't complete, both
# regular and awaited.
started_awaited.length.should > 1
(succeeded_awaited.length..succeeded_awaited.length+1).should include(started_awaited.length)
started_regular.length.should > 1
(succeeded_regular.length..succeeded_regular.length+1).should include(started_regular.length)
end
end
end
describe 'server description changed' do
require_topology :single
let(:sdam_proc) do
Proc.new do |client|
client.subscribe(Mongo::Monitoring::SERVER_DESCRIPTION_CHANGED, subscriber)
end
end
let(:client) do
new_local_client(SpecConfig.instance.addresses,
# Heartbeat interval is bound by 500 ms
SpecConfig.instance.test_options.merge(client_options).merge(
heartbeat_frequency: 0.5,
sdam_proc: sdam_proc,
),
)
end
let(:client_options) do
{}
end
it 'is not published when there are no changes in server state' do
client
sleep 6
client.close
events = subscriber.select_succeeded_events(Mongo::Monitoring::Event::ServerDescriptionChanged)
# In 6 seconds we should have about 10 or 12 heartbeats.
# We expect 1 or 2 description changes:
# The first one from unknown to known,
# The second one because server changes the fields it returns based on
# driver server check payload (e.g. ismaster/isWritablePrimary).
events.length.should >= 1
events.length.should <= 2
end
end
end
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