ismasan

# A Pipeline extension to process steps concurrently
# Example
# class ConcurrentPipeline < Pipeline
#   include ConcurrentProcessing
# end
#
# MyPipeline = ConcurrentPipeline.new do |pl|
#   pl.step ValidateInput
#
#   # These steps run concurrently

ismasan

# https://github.com/ismasan/parametric

require 'parametric'

class InputValidator
  def initialize(&block)
    @schema = Parametric::Schema.new(&block)
  end

  # @param result [Result]

ismasan

// Copyright (c) 2017 Ismael Celis

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all

ismasan

require 'json'
require 'csv'

# ruby json_to_csv.rb /path/to/data.json > /path/to/data.csv
#
MAP_VALUE = ->(value) {
  case value
  when Array
    value.join('|')
  when Hash

ismasan

// fileResponseWriter wraps an http.ResponseWriter and a File
// passing it to an http.Handler's ServeHTTP
// will write to both the file and the response.

type fileResponseWriter struct {
	file  io.Writer
	resp  http.ResponseWriter
	multi io.Writer
}

ismasan

/*
The MIT License (MIT)

Copyright (c) 2014 Ismael Celis

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

ismasan

module Hash64
  # Turn a string into a well distributed 64 bit integer
  # This matches the hash_64() PGSQL function used to partition streams.
  #
  # @param value [String] the string to hash
  # @return [Integer] a 64 bit integer
  def self.call(value)
    binary_string = ('0' + Digest::MD5.hexdigest(value)[0...16]).hex.to_s(2)
    # Convert the binary string to a signed BigInt
    bigint_value = binary_string.to_i(2)

ismasan

CREATE OR REPLACE FUNCTION public.rebalance_consumers_all_groups()
 RETURNS void
 LANGUAGE plpgsql
AS $function$
DECLARE
  group_ids uuid[];
  min_last_seq bigint;
  consumers_deleted bigint;
  group_min_seq bigint;
  p_group_id uuid;

ismasan

require 'digest'

class ConsistentHash
  Node = Data.define(:position, :updated_at)

  def initialize(size = 1)
    @hash_ring = {}
    (0...size).each { |i| add(i) }
  end

ismasan

require 'pg'
require 'connection_pool'
require 'async'

DB = ConnectionPool.new(size: 5, timeout: 5) do
  PG.connect(dbname: 'test_db')
end

class DBClient
  def initialize(db)