Paxa

What I want to have: all logs in JSON format, with additional tags and per-request tags (similar to java's MDC)

How to make it:

1. Use lograge with logstash-event to change default request logs
2. Make custom log formatter
3. Override ActiveSupport::TaggedLogging format
4. Add own error handlers with config.exceptions_app = self.routes
5. Override default logger at the right time

Use environment variables JSON_LOGGER = true/false and RAILS_LOG_LEVEL = info / debug / etc

Paxa

doctype html
html[lang="en"]
  head
    meta(charset="UTF-8")
    title Installments API
    link[rel="stylesheet" type="text/css" href="//unpkg.com/swagger-ui-dist@3/swagger-ui.css"]

  body
    #swagger-ui

Paxa

# run with:
#   nginx -c $(pwd)/debug.conf

daemon            off;
worker_processes  1;

events {
    worker_connections  128;
}

Paxa

gem 'fog-core', '>2.0'
gem 'fog-backblaze'

require 'fog/core'
require 'fog/backblaze'

TEST_BUCKET = ENV['B2_BUCKET'] || 'fog-demo-1505931432'

if !ENV['B2_ACCOUNT_ID'] || ENV['B2_ACCOUNT_ID'] == ""
  puts "Missing env B2_ACCOUNT_ID"

Paxa

tcp_socket = Socket.tcp("mysite.com", 32500, connect_timeout: 60)
ssl_context = OpenSSL::SSL::SSLContext.new()

ssl_context.client_cert_cb = Proc.new do
  [
    OpenSSL::X509::Certificate.new(File.open("./client.crt")),
    OpenSSL::PKey.read(File.open("./client.key"))
  ]
end

Paxa

const express = require('express');
const asyncRouter = require('../lib/async_router');

var router = asyncRouter(express.Router());

router.get('/', async (req, res, next) => {
  // mkaing async errors
});

Paxa

desc "Create rabbitmq setup"
task :setup_rabbit => :environment do
  QueueWorker::HostSelector.mute_logger
  Rails.logger = Logger.new(STDOUT)
  options = {}
  if ENV['UNDO']
    options = {delete_all: true, raise_errors: false}
  end
  if ENV['RECREATE']

Paxa

Run from cloud server in Jakarta, sending requests to cloud server in Singapore

Warming up --------------------------------------
               excon     1.000  i/100ms
           net-http2     1.000  i/100ms
            net-http     1.000  i/100ms
net-http2 persistent     6.000  i/100ms
    excon persistent     5.000  i/100ms
     http persistent     6.000  i/100ms
Calculating -------------------------------------

Paxa

module Async
  ##
  # Run code in thread, handle exceptions, release DB connections
  #
  #   Async(:send_email) { Mailer.send }
  #
  def self.run(name)
    parent_t = Thread.current
    working_thread = Thread.new do
      begin

Paxa

unless ActiveRecord::ConnectionAdapters::ConnectionPool.method_defined?(:stat) # will be in Rails 5.1
  class ActiveRecord::ConnectionAdapters::ConnectionPool
    def stat
      synchronize do
        {
          size: size,
          connections: @connections.size,
          busy: @connections.count { |c| c.in_use? && c.owner.alive? },
          dead: @connections.count { |c| c.in_use? && !c.owner.alive? },
          idle: @connections.count { |c| !c.in_use? },