masto-fe/spec/lib/connection_pool/shared_timed_stack_spec.rb
Eugen Rochko 0d9ffe56fb
Add request pool to improve delivery performance (#10353)
* Add request pool to improve delivery performance

Fix #7909

* Ensure connection is closed when exception interrupts execution

* Remove Timeout#timeout from socket connection

* Fix infinite retrial loop on HTTP::ConnectionError

* Close sockets on failure, reduce idle time to 90 seconds

* Add MAX_REQUEST_POOL_SIZE option to limit concurrent connections to the same server

* Use a shared pool size, 512 by default, to stay below open file limit

* Add some tests

* Add more tests

* Reduce MAX_IDLE_TIME from 90 to 30 seconds, reap every 30 seconds

* Use a shared pool that returns preferred connection but re-purposes other ones when needed

* Fix wrong connection being returned on subsequent calls within the same thread

* Reduce mutex calls on flushes from 2 to 1 and add test for reaping
2019-07-02 00:34:38 +02:00

61 lines
1.6 KiB
Ruby

# frozen_string_literal: true
require 'rails_helper'
describe ConnectionPool::SharedTimedStack do
class MiniConnection
attr_reader :site
def initialize(site)
@site = site
end
end
subject { described_class.new(5) { |site| MiniConnection.new(site) } }
describe '#push' do
it 'keeps the connection in the stack' do
subject.push(MiniConnection.new('foo'))
expect(subject.size).to eq 1
end
end
describe '#pop' do
it 'returns a connection' do
expect(subject.pop('foo')).to be_a MiniConnection
end
it 'returns the same connection that was pushed in' do
connection = MiniConnection.new('foo')
subject.push(connection)
expect(subject.pop('foo')).to be connection
end
it 'does not create more than maximum amount of connections' do
expect { 6.times { subject.pop('foo', 0) } }.to raise_error Timeout::Error
end
it 'repurposes a connection for a different site when maximum amount is reached' do
5.times { subject.push(MiniConnection.new('foo')) }
expect(subject.pop('bar')).to be_a MiniConnection
end
end
describe '#empty?' do
it 'returns true when no connections on the stack' do
expect(subject.empty?).to be true
end
it 'returns false when there are connections on the stack' do
subject.push(MiniConnection.new('foo'))
expect(subject.empty?).to be false
end
end
describe '#size' do
it 'returns the number of connections on the stack' do
2.times { subject.push(MiniConnection.new('foo')) }
expect(subject.size).to eq 2
end
end
end