I've started building an analytical dashboard for Bitshares/Openledger (similar to steempunks and will be open sourcing Elixir libraries along the way. This release adds a simple subscription interface by integrating GenStage, a specification for handling and exchanging events.

Repo and package

• Github Repo
• Hex package

Changelog

• Graphene.Stages.Supervisor module
• Graphene.Stages.Blocks.Producer module
• example of GenStage blocks consumer
• config option to start Stages.Supervisor process
• minor code style improvements and bugfixes

GenStage client example

defmodule Graphene.Stage.Blocks.ExampleConsumer do
  use GenStage
  require Logger
  alias Graphene.Block

  def start_link(args, options \\ []) do
    GenStage.start_link(__MODULE__, args, options)
  end

  def init(args) do
    {:consumer, args, subscribe_to: args[:subscribe_to]}
  end

  def handle_events(events, _from, state) do
    block = hd(events)
    for tx <- Block.unpack_txs(block) do
      Logger.info """
      New transaction:
      #{inspect tx}
      """
    end
    {:noreply, [], state}
  end

end

About Elixir

Elixir is a functional programming language with superior concurrency primitives, distributed computation and fault tolerance capabilities based on Erlang/OTP.
Personally, I am really happy with my bet on Elixir to build cryptotokens related apps and strongly recommend every developer to try it.

Learning resources:

• ElixirConf Jose Valim Keynote
• ElixirConf 2016 Chris McCord Keynote
• Elixir School
• Elixir Crash Course

Roadmap

• Next: assets and feeds
• More utility functions
• Implement subscriptions
• Investigate PubSub implementations
• More tests and docs