sheenobu

Architecture Thoughts

A quick writeup of architecture ideas for developing and deploying ruby applications.

(NOTE: I'm still semi-new to ruby so I'm mainly compiling untested ideas I hear about).

TODO

• Mocking
• Unit Testing

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require 'eventmachine'
require 'aquarium'

class Promise

  def null_method(*args)

  end

  def initialize

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API

A proposed external API, does not include functions like 'managed' which are internal to the object migrations.

Toplevel

ShardDSL - includes the API

shard(&blk) - activate and configure sharding on this object.

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class ProdOpenstackExternalInterfaceH(logger: ActorRef, xActorSystem: ActorSystem, _httpClient: ActorRef)
    extends OpenstackExternalInterfaceH
    with HttpHelper with JsonProcessor {

  implicit val system = xActorSystem
  implicit val httpClient = _httpClient

  def parseIpAddress = { json: JValue =>
    ((json \ "server" \ "addresses" \ "public").filter({
      case JObject(List(JField("version", JInt(x)), JField("addr", JString(_)))) => x == 4

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class ProductionDomainNameServiceExternal(logger: ActorRef, xActorSystem: ActorSystem, _httpClient: ActorRef)
    extends DomainNameServiceExternal
    with HttpHelper with JsonProcessor {

  implicit val system = xActorSystem
  implicit val httpClient = _httpClient

  def with_json(resp: HttpResponse)(callback: JValue => Unit) {
    callback(parse(resp.bodyAsString))
  }

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  module AuthenticateBeforeRequests
    def self.append_features mod
      Aquarium::Aspects::Aspect.new :around, :type => mod, 
          :methods => [:create_dns_entry,:create_arpa,:exists?,:zone],
          :method_options => [:exclude_ancestor_methods] do |jp, object, *args|
            object.authenticate
            jp.proceed
      end
    end
  end

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Stuff to learn and do

By Sheena Artrip

Java

• Continue developing on spring-data-jdbc.
  • Build example application.
• Webhook OSGI engine.

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TODO blog posts.

 * Iterative integration development using resque and resque-steps.
 * Continue the OSGI webhook blog post.
 * Development using octorake.
 * Being agile with Java, an opinion post and series of experiments
 * Inherited Resources and Versioncake, together.
 * Revisiting Jobs: Introduction
 * Revisiting Jobs: Electronic Filing.

sheenobu

#convert a list of integers into a list of booleans.
1.9.3p194 :026 > [1,2,3,4].map { |x| x == 3 } => [false, false, true, false] 

# return true if any integer is three
1.9.3p194 :027 > [1,2,3,4].map { |x| x == 3 }.reduce(false,:or) => true 

# return true if ALL integers are three
1.9.3p194 :028 > [1,2,3,4].map { |x| x == 3 }.reduce(true,:and) => false 

# return true if ALL integers are three

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interface GenderModifier {
  public void visit(GenderWords words);
}

class PropertiesTranslationGenderModifier implements GenderModifier {
  final String prefix;
  final Properties properties;
  final Locale locale;
  public void visit(GenderWords words) {
    words.setPossessive(properties.get("genderTranslator." + locale.toString() + "." + prefix + ".possessive"));