mansueli

Testing RLS policies

To test policies on the database itself (i.e., from the SQL Editor or from psql) without switching to your frontend and logging in as different users, you can utilize the following helper SQL procedures (credits):

grant anon, authenticated to postgres;

create or replace procedure auth.login_as_user (user_email text)
    language plpgsql
    as $$

ityonemo

:net_kernel.start([:"[email protected]"])
:erlang.set_cookie(:cook)
{:ok, peer, peername} =
   :peer.start(%{connection: 0, name: :peer, host: ~C'127.0.0.1'})
:peer.call(peer, :erlang, :set_cookie, [:cook])
Node.connect(peername)

# add code paths
:rpc.call(peername, :code, :add_paths, [:code.get_path()])

ikuz

Nix notes

Nix concepts

packages (and derivations)

• package: a software package
• derivation: a specific version of a software package
  • identified by a hash

alissonsales

awk '{ print "*" NF "\r"; for(i = 1; i <= NF; i++) { print "$" length($i) "\r\n" $i "\r" } }'

lrascao

sudo yum install gcc gcc-c++ make libxslt fop ncurses-devel openssl-devel *openjdk-devel unixODBC unixODBC-devel

KERL_CONFIGURE_OPTIONS="--with-ssl=/home/ec2-user/openssl/releases/1.0.2h --disable-dynamic-ssl-lib" kerl build 18.3 18.3

# without ECC
KERL_CONFIGURE_OPTIONS="CFLAGS=-DOPENSSL_NO_EC=1" kerl build 18.3 18.3

crcastle

Assumed conditions:

• Apache Kafka on Heroku cluster provisioned
• Topic has been created named cli-test (but you can change the name used below)
• Heroku CLI
• Heroku CLI Kafka plugin
• Homebrew, sed

Install C/C++ Kafka Library (librdkafka) and Kafka CLI tool (kafkacat)

For OS X, use the Homebrew command below. For others, see installation instructions at the links above.

josevalim

# You will need fswatch installed (available in homebrew and friends)
# The command below will run tests and wait until fswatch writes something.
# The --stale flag will only run stale entries, it requires Elixir v1.3.
fswatch lib/ test/ | mix test --stale --listen-on-stdin

tam7t

Are your Ruby HTTPS API calls secure?

Let's check:

2.0.0-p481 :001 > OpenSSL::SSL::SSLContext::DEFAULT_PARAMS
 => {:ssl_version=>"SSLv23", :verify_mode=>1, :ciphers=>"ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM:+LOW", :options=>-2147482625}
2.0.0-p481 :002 > rating = JSON.parse(RestClient::Resource.new("https://www.howsmyssl.com/a/check" ).get)['rating']
 => "Bad"

darrencauthon

apt-get -y install build-essential m4 libncurses5-dev libssh-dev unixodbc-dev libgmp3-dev libwxgtk2.8-dev libglu1-mesa-dev fop xsltproc default-jdk
apt-get -y install make
apt-get -y install libncurses5-dev
mkdir -p /src/erlang
cd /src/erlang
wget http://www.erlang.org/download/otp_src_17.0.tar.gz
tar -xvzf otp_src_17.0.tar.gz
chmod -R 777 otp_src_17.0
cd otp_src_17.0
./configure

edgurgel

require "formula"

# https://github.com/Homebrew/homebrew/blob/master/Library/Formula/elixir.rb
class ErlangInstalled < Requirement
  fatal true
  default_formula 'erlang'
  env :userpaths

  satisfy {
    erl = which('erl') and begin