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require 'spec_helper'
describe "Send Signals" do
old_cld_trap = nil
before do
old_cld_trap = Signal.trap("CLD", "IGNORE")
end
after do
Signal.trap("CLD", old_cld_trap)
end
let(:config) do
{
:master_process => 'on',
:daemon => 'on',
:workers => 1,
:header_template => 'HEADER',
:footer_template => 'FOOTER',
:message_ttl => '60s',
:subscriber_connection_ttl => '65s'
}
end
it "should disconnect subscribers when receives TERM signal" do
channel = 'ch_test_send_term_signal'
body = 'body'
response = ''
nginx_run_server(config, :timeout => 5) do |conf|
EventMachine.run do
sub_1 = EventMachine::HttpRequest.new(nginx_address + '/sub/' + channel.to_s).get :head => headers.merge('X-Nginx-PushStream-Mode' => 'long-polling')
sub_1.callback do
expect(sub_1).to be_http_status(304).without_body
expect(Time.parse(sub_1.response_header['LAST_MODIFIED'].to_s).utc.to_i).to be_in_the_interval(Time.now.utc.to_i-1, Time.now.utc.to_i)
expect(sub_1.response_header['ETAG'].to_s).to eql("W/0")
end
sub_2 = EventMachine::HttpRequest.new(nginx_address + '/sub/' + channel.to_s).get :head => headers
sub_2.stream do |chunk|
# send stop signal
`#{ nginx_executable } -c #{ conf.configuration_filename } -s stop > /dev/null 2>&1`
response += chunk
end
sub_2.callback do
expect(response).to include("FOOTER")
EventMachine.stop
end
end
end
end
it "should reload normaly when receives HUP signal" do
channel = 'ch_test_send_hup_signal'
body = 'body'
response = response2 = ''
pid = pid2 = 0
open_sockets_1 = 0
socket = nil
nginx_run_server(config, :timeout => 60) do |conf|
error_log_pre = File.readlines(conf.error_log)
EventMachine.run do
# create subscriber
sub_1 = EventMachine::HttpRequest.new(nginx_address + '/sub/' + channel.to_s).get :head => headers
sub_1.stream do |chunk|
response = response + chunk
if response.strip == conf.header_template
# check statistics
pub_1 = EventMachine::HttpRequest.new(nginx_address + '/channels-stats').get :head => headers
pub_1.callback do
expect(pub_1).to be_http_status(200).with_body
resp_1 = JSON.parse(pub_1.response)
expect(resp_1.has_key?("channels")).to be_truthy
expect(resp_1["channels"].to_i).to eql(1)
expect(resp_1["by_worker"].count).to eql(1)
pid = resp_1["by_worker"][0]['pid'].to_i
open_sockets_1 = `lsof -p #{Process.getpgid pid} | grep socket | wc -l`.strip
socket = open_socket(nginx_host, nginx_port)
socket.print "GET /sub/#{channel} HTTP/1.1\r\nHost: test\r\nX-Nginx-PushStream-Mode: long-polling\r\n\r\n"
# send reload signal
`#{ nginx_executable } -c #{ conf.configuration_filename } -s reload > /dev/null 2>&1`
end
end
end
# check if first worker die
timer = EM.add_periodic_timer(0.5) do
# check statistics again
pub_4 = EventMachine::HttpRequest.new(nginx_address + '/channels-stats').get :head => headers
pub_4.callback do
resp_3 = JSON.parse(pub_4.response)
expect(resp_3.has_key?("by_worker")).to be_truthy
old_process_running = Process.getpgid(pid) rescue false
if !old_process_running && (resp_3["by_worker"].count == 1) && (pid != resp_3["by_worker"][0]['pid'].to_i)
timer.cancel
# publish a message
pub_2 = EventMachine::HttpRequest.new(nginx_address + '/pub?id=' + channel.to_s).post :head => headers, :body => body
pub_2.callback do
# add new subscriber
sub_2 = EventMachine::HttpRequest.new(nginx_address + '/sub/' + channel.to_s + '.b1').get :head => headers
sub_2.stream do |chunk|
response2 = response2 + chunk
if response2.strip == conf.header_template
# check statistics again
pub_3 = EventMachine::HttpRequest.new(nginx_address + '/channels-stats').get :head => headers
pub_3.callback do
resp_2 = JSON.parse(pub_3.response)
expect(resp_2.has_key?("channels")).to be_truthy
expect(resp_2["channels"].to_i).to eql(1)
expect(resp_2["published_messages"].to_i).to eql(1)
expect(resp_2["subscribers"].to_i).to eql(1)
open_sockets_2 = `lsof -p #{Process.getpgid resp_3["by_worker"][0]['pid'].to_i} | grep socket | wc -l`.strip
expect(open_sockets_2).to eql(open_sockets_1)
EventMachine.stop
# send stop signal
`#{ nginx_executable } -c #{ conf.configuration_filename } -s stop > /dev/null 2>&1`
error_log_pos = File.readlines(conf.error_log)
expect((error_log_pos - error_log_pre).join).not_to include("open socket")
socket.close unless socket.nil?
end
end
end
end
end
end
end
end
end
end
shared_examples_for "reload server" do
it "should reload fast" do
channel = 'ch_test_send_hup_signal'
pid = pid2 = 0
nginx_run_server(config.merge(custom_config), :timeout => 5) do |conf|
EventMachine.run do
# create subscriber
sub_1 = EventMachine::HttpRequest.new(nginx_address + '/sub/' + channel.to_s).get :head => headers
sub_1.stream do |chunk|
end
EM.add_timer(1) do
# check statistics
pub_1 = EventMachine::HttpRequest.new(nginx_address + '/channels-stats').get :head => headers
pub_1.callback do
expect(pub_1).to be_http_status(200).with_body
resp_1 = JSON.parse(pub_1.response)
expect(resp_1["subscribers"].to_i).to eql(1)
expect(resp_1["channels"].to_i).to eql(1)
expect(resp_1["by_worker"].count).to eql(1)
pid = resp_1["by_worker"][0]['pid'].to_i
# send reload signal
`#{ nginx_executable } -c #{ conf.configuration_filename } -s reload > /dev/null 2>&1`
# check if first worker die
EM.add_periodic_timer(1) do
# check statistics
pub_4 = EventMachine::HttpRequest.new(nginx_address + '/channels-stats').get :head => headers
pub_4.callback do
resp_3 = JSON.parse(pub_4.response)
expect(resp_3.has_key?("by_worker")).to be_truthy
if resp_3["by_worker"].count == 1
expect(resp_3["subscribers"].to_i).to eql(0)
expect(resp_3["channels"].to_i).to eql(1)
pid2 = resp_3["by_worker"][0]['pid'].to_i
expect(pid).not_to eql(pid2)
EventMachine.stop
end
end
end
end
end
end
end
end
end
context "with a big ping message interval" do
let(:custom_config) do
{
:ping_message_interval => "10m",
:subscriber_connection_ttl => '10s'
}
end
it_should_behave_like "reload server"
end
context "with a big subscriber connection ttl" do
let(:custom_config) do
{
:ping_message_interval => "1s",
:subscriber_connection_ttl => '10m'
}
end
it_should_behave_like "reload server"
end
it "should ignore changes on shared memory size when doing a reload" do
channel = 'ch_test_reload_with_different_shared_memory_size'
body = 'body'
response = response2 = ''
pid = pid2 = 0
nginx_run_server(config, :timeout => 10) do |conf|
EventMachine.run do
publish_message(channel, {}, body)
# check statistics
pub_1 = EventMachine::HttpRequest.new(nginx_address + '/channels-stats').get :head => headers
pub_1.callback do
expect(pub_1).to be_http_status(200).with_body
resp_1 = JSON.parse(pub_1.response)
expect(resp_1.has_key?("channels")).to be_truthy
expect(resp_1["channels"].to_i).to eql(1)
expect(resp_1["published_messages"].to_i).to eql(1)
conf.configuration[:shared_memory_size] = '20m'
conf.create_configuration_file
# send reload signal
`#{ nginx_executable } -c #{ conf.configuration_filename } -s reload > /dev/null 2>&1`
sleep 5
pub_2 = EventMachine::HttpRequest.new(nginx_address + '/channels-stats').get :head => headers
pub_2.callback do
expect(pub_2).to be_http_status(200).with_body
resp_2 = JSON.parse(pub_2.response)
expect(resp_2.has_key?("channels")).to be_truthy
expect(resp_2["channels"].to_i).to eql(1)
expect(resp_2["published_messages"].to_i).to eql(1)
error_log = File.read(conf.error_log)
expect(error_log).to include("Cannot change memory area size without restart, ignoring change")
EventMachine.stop
end
end
end
end
end
end
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