ostinelli

defmodule TravelerWeb.SearchbarLive do
  use TravelerWeb, :live_view

  alias Phoenix.LiveView.JS
  alias Traveler.Places

  def mount(_params, _session, socket) do
    socket = assign(socket, places: [])
    {:ok, socket, layout: false}
  end

ostinelli

RSA Private / Pubic key pair

To generate a private / public RSA key pair, you can either use openssl, like so:

$ openssl genrsa -out private.pem 4096  
$ openssl rsa -in private.pem -outform PEM -pubout -out public.pem  

Or, you can use the following python script:

ostinelli

require 'openssl'
require 'base64'

# ===== \/ sign =====
# generate keys
key = OpenSSL::PKey::EC.new("secp256k1")
key.generate_key
public_key = key.public_key
public_key_hex = public_key.to_bn.to_s(16).downcase # public key in hex format

ostinelli

defmodule Foo do
  defmacro foo(do: block) do
    quote do
      res = unquote(block)
      IO.inspect(res)
    end
  end
end

defmodule Use do

ostinelli

Jenkins CI on OSX

Instructions on how to setup a secured Jenkins CI on a Mac.

Download & Install dependencies

All of these operations are done with your admin user.

Developer tools

Install the command line developer tools.

ostinelli

Jenkins CI

Instructions on how to setup a secured Jenkins CI.

Install Jenkins

$ wget -q -O - https://jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add -
$ sudo sh -c 'echo deb http://pkg.jenkins-ci.org/debian binary/ > /etc/apt/sources.list$ .d/jenkins.list'
$ sudo apt-get update
$ sudo apt-get install jenkins

ostinelli

If you have multiple applications on Heroku and would like to use a single Logentries account for all of them, this is how you do it. Basically, do not use add-ons, and send all drains to your account.

• In your Logentries account, click on Add Log
• Select Manual
• In the form that appears, input the following:
  • Log Name: access.log
  • Select Set: new set named myapp-{environment}, for instance myapp-staging (at least, this is how I like to name my entries)
  • Select the Plain TCP, UDP - logs are sent via syslog option
• Click on Create Log Token

ostinelli

defmodule MyApp.Worker do
  use GenServer

  # api

  @spec start_link(worker_id :: String.t()) :: GenServer.on_start()
  def start_link(worker_id) do
    GenServer.start_link(__MODULE__, [worker_id], name: via_tuple(worker_id))
  end

ostinelli

-module(dvvset_test).
-export([main/0]).

%% NOTE: we always generate a new client ID to enforce consistency.

main() ->
	%% client 1 write
	Dot0 = dvvset:update(dvvset:new("value-0"), generate_id()),

	%% server

ostinelli

-module(kv_bench).

-compile([export_all]).

main(Count) ->
    Values = lists:foldl(fun(C, Acc) ->
        [{C, {v, C}} | Acc]
    end, [], lists:seq(1, Count)),

    {TimeDict, ResultDict} = timer:tc(?MODULE, get_last_dict, [Count, Values]),