kakoni

require 'rbnacl'
require 'base64'
class Example

  attr_reader :secret_box, :index_key

  def initialize
    key = RbNaCl::Random.random_bytes(RbNaCl::SecretBox.key_bytes)
    @index_key = RbNaCl::Random.random_bytes(RbNaCl::SecretBox.key_bytes)
    @secret_box = RbNaCl::SecretBox.new(key)

kakoni

1) Make sure YARN is installed (https://yarnpkg.com/en/docs/install)

2) Install rails 5.1 beta
gem install rails --pre

3) Create new app
rails new myapp --webpack=vue

4) Create home controller
rails g controller home index --no-assets

kakoni

CREATE EXTENSION file_fdw;
CREATE SERVER import FOREIGN DATA WRAPPER file_fdw;
CREATE FOREIGN TABLE table1_import (
  col1 text,
  col2 text,
  ...
) SERVER import OPTIONS ( filename '/path/to/file.csv', format 'csv' );

kakoni

Dependencies:
1. Python 2.7
2. Redis
3. PostgreSQL 
4. Node.js

1. Install Python 2.7
Get python 2.7 from IUS
rpm -i https://rhel6.iuscommunity.org/ius-release.rpm
yum install python27 python27-virtualenv

kakoni

Rakefile
========
require 'rake/testtask'

Rake::TestTask.new do |t|
  t.libs << 'test'
  t.libs << 'lib'
  t.test_files = FileList['test/**/*_test*.rb']
  t.verbose = true
end

kakoni

require 'csv'

class MyCSV < CSV

  def <<(row)
    # make sure headers have been assigned
    if header_row? and [Array, String].include? @use_headers.class
      parse_headers  # won't read data for Array or String
      self << @headers if @write_headers
    end

kakoni

Perhaps the most important
- max_connections: the number of concurrent sessions. rule-of-thumb formula is "number of spindles+number of processors+X"
- work_mem : the maximal amount of memory to be used for intermediate results such as hash tables. 
- shared_buffers the amount of memory dedicated to 'pinned' buffer space.Normally it is advised to set it to about 1/4...1/2 of all available "free" memory
- effective_cache_size the amount of memory assumed to be used by the OS's LRU buffers. Set too all available "free" memory. 3/4 aggressive, reasonable amount
- random_page_cost : an estimate for the relative cost of disk seeks.

kakoni

in:
  type: file
  path_prefix: fail.csv
  parser:
    type: csv
    charset: utf-8
    delimiter: ','
    stop_on_invalid_record: true
    columns:
      - {name: a, type: string}

kakoni

XMPP
----
- Extensions
- XEP-0364 OTR
- XEP-0357 Push Notifications
- XEP-XXXX OMEMO(multiclient end-to-end) (Adaption of Axolotl now known as signal protocol)

- Chatsecure for android and ios.
Conversations.io to become the new ChatSecure Android.
- Zom is fork of chatsecure

kakoni

require 'fluent/plugin/parser'

require 'csv'

module Fluent
  module Plugin
    class CSV2Parser < ValuesParser

      Plugin.register_parser('csv2', self)