xli

# How to find out where a method comes from.
# Learned this from Dave Thomas while teaching Advanced Ruby Studio
# Makes the case for separating method definitions into
# modules, especially when enhancing built-in classes.
module Perpetrator
  def crime
  end
end

class Fixnum

xli

//find out caller's class name (found from log5j)
public static void xxx() { 
    String name = new Exception().getStackTrace()[1].getClassName();
    ....
}

// or

String name = Thread.currentThread().getStackTrace()[3].getClassName()

xli

import static org.jruby.javasupport.JavaEmbedUtils.invokeMethod;

import org.jruby.Ruby;
import org.jruby.runtime.builtin.IRubyObject;

public class JRubyObject {

    public static JRubyObject load(Ruby runtime, String dump) {
        return new JRubyObject(((IRubyObject) marshalClass(runtime).send("load", dump)));
    }

xli

# Load this file before load anything.
# JRuby-Rack will load rack before load rails, so should load this file when JRuby runtime initialized.
# Call AutoloadThreadsafe.eager_load_all! at the end of rails environment rb

module AutoloadThreadsafe
  module Recorder
    def self.included(base)
      base.class_eval do
        alias :unsafe_autoload :autoload
        def autoload(m, filename)

xli

require 'fileutils'
require 'yaml'
require 'erb'
module PlatformConfig
  def load(config_yml)
    unless File.exists?(config_yml)
      FileUtils.cp("#{config_yml}.example", config_yml)
    end

    if platform_config = YAML.load(ERB.new(File.read(config_yml)).result)[RUBY_PLATFORM]

xli

PS1='\u@\h \W$(__git_ps1 "(%s)[$(git config --get user.name)]")\$ '

PS1='\h \W$(__git_ps1 "($(git config --get user.name)@%s)")\$ '

xli

export PATH=$PATH:~/Downloads/IAMCli-1.5.0/bin
export AWS_IAM_HOME=~/Downloads/IAMCli-1.5.0

iam-servercertupload --aws-credential-file <credential.csv> -s <sname> -b <ssl.crt.txt> -k <ssl.key.txt> -c intermediate.crt.txt -p /cloudfront/<sname>/

xli

  # aws-ruby-sdk v1 API
  def s3_multipart_upload_credentials(bucket, key, role_arn)
    sts = AWS::STS.new
    policy = AWS::STS::Policy.new
    policy.allow(:actions => ["s3:PutObject",
                              "s3:GetObject",
                              "s3:AbortMultipartUpload",
                              "s3:ListMultipartUploadParts",
                              "s3:ListBucketMultipartUploads"],
                 :resources => "arn:aws:s3:::#{[bucket,key].join('/')}")

xli

bucket = <s3 bucket name>
s3key = <s3 file key> # use a random uniq key
{
  "data-aws-id" => ENV["S3_MULTIPART_UPLOAD_ACCESS_KEY_ID"],
  "data-bucket" => bucket,
  "data-key" => s3key,
  "data-signer-url" => <your-data-signer-url>
}

xli

// need jQuery and EvaporateJS
var config = $("[data-signer-url]");
var _e_ = new Evaporate({
  signerUrl: config.data("signer-url"),
  bucket: config.data("bucket"),
  aws_key: config.data("aws-id")
});
var configuration = {
  name: config.data("key"),
  // see EvaporateJS document for other configurations need setup here