Init

Author: Yuriy Bodarev

.gitignore

@@ -0,0 +1,16 @@
+# App artifacts
+/_build
+/db
+/deps
+/*.ez
+
+# Generated on crash by the VM
+erl_crash.dump
+
+# Files matching config/*.secret.exs pattern contain sensitive
+# data and you should not commit them into version control.
+#
+# Alternatively, you may comment the line below and commit the
+# secrets files as long as you replace their contents by environment
+# variables.
+/config/*.secret.exs

README.md

@@ -0,0 +1,19 @@
+# Transactions
+
+To start your Phoenix server:
+
+  * Install dependencies with `mix deps.get`
+  * Create and migrate your database with `mix ecto.create && mix ecto.migrate`
+  * Start Phoenix endpoint with `mix phx.server`
+
+Now you can visit [`localhost:4000`](http://localhost:4000) from your browser.
+
+Ready to run in production? Please [check our deployment guides](http://www.phoenixframework.org/docs/deployment).
+
+## Learn more
+
+  * Official website: http://www.phoenixframework.org/
+  * Guides: http://phoenixframework.org/docs/overview
+  * Docs: https://hexdocs.pm/phoenix
+  * Mailing list: http://groups.google.com/group/phoenix-talk
+  * Source: https://github.com/phoenixframework/phoenix

config/config.exs

@@ -0,0 +1,28 @@
+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+#
+# This configuration file is loaded before any dependency and
+# is restricted to this project.
+use Mix.Config
+
+# General application configuration
+config :transactions_api,
+  namespace: Transactions,
+  ecto_repos: [Transactions.Repo]
+
+# Configures the endpoint
+config :transactions_api, TransactionsWeb.Endpoint,
+  url: [host: "localhost"],
+  secret_key_base: "HSQ9nXbQtGtYRs1AMdVAs0afX2p8gb+TxyEV9HgtahqtVp+DbQuUeNnNIcuz45uT",
+  render_errors: [view: TransactionsWeb.ErrorView, accepts: ~w(json)],
+  pubsub: [name: Transactions.PubSub,
+           adapter: Phoenix.PubSub.PG2]
+
+# Configures Elixir's Logger
+config :logger, :console,
+  format: "$time $metadata[$level] $message\n",
+  metadata: [:request_id]
+
+# Import environment specific config. This must remain at the bottom
+# of this file so it overrides the configuration defined above.
+import_config "#{Mix.env}.exs"

config/dev.exs

@@ -0,0 +1,46 @@
+use Mix.Config
+
+# For development, we disable any cache and enable
+# debugging and code reloading.
+#
+# The watchers configuration can be used to run external
+# watchers to your application. For example, we use it
+# with brunch.io to recompile .js and .css sources.
+config :transactions_api, TransactionsWeb.Endpoint,
+  http: [port: 4000],
+  debug_errors: true,
+  code_reloader: true,
+  check_origin: false,
+  watchers: []
+
+# ## SSL Support
+#
+# In order to use HTTPS in development, a self-signed
+# certificate can be generated by running the following
+# command from your terminal:
+#
+#     openssl req -new -newkey rsa:4096 -days 365 -nodes -x509 -subj "/C=US/ST=Denial/L=Springfield/O=Dis/CN=www.example.com" -keyout priv/server.key -out priv/server.pem
+#
+# The `http:` config above can be replaced with:
+#
+#     https: [port: 4000, keyfile: "priv/server.key", certfile: "priv/server.pem"],
+#
+# If desired, both `http:` and `https:` keys can be
+# configured to run both http and https servers on
+# different ports.
+
+# Do not include metadata nor timestamps in development logs
+config :logger, :console, format: "[$level] $message\n"
+
+# Set a higher stacktrace during development. Avoid configuring such
+# in production as building large stacktraces may be expensive.
+config :phoenix, :stacktrace_depth, 20
+
+# Configure your database
+config :transactions_api, Transactions.Repo,
+  adapter: Ecto.Adapters.Postgres,
+  username: "postgres",
+  password: "postgres",
+  database: "transactions_api_dev",
+  hostname: "localhost",
+  pool_size: 10

config/prod.exs

@@ -0,0 +1,64 @@
+use Mix.Config
+
+# For production, we often load configuration from external
+# sources, such as your system environment. For this reason,
+# you won't find the :http configuration below, but set inside
+# TransactionsWeb.Endpoint.init/2 when load_from_system_env is
+# true. Any dynamic configuration should be done there.
+#
+# Don't forget to configure the url host to something meaningful,
+# Phoenix uses this information when generating URLs.
+#
+# Finally, we also include the path to a cache manifest
+# containing the digested version of static files. This
+# manifest is generated by the mix phx.digest task
+# which you typically run after static files are built.
+config :transactions_api, TransactionsWeb.Endpoint,
+  load_from_system_env: true,
+  url: [host: "example.com", port: 80],
+  cache_static_manifest: "priv/static/cache_manifest.json"
+
+# Do not print debug messages in production
+config :logger, level: :info
+
+# ## SSL Support
+#
+# To get SSL working, you will need to add the `https` key
+# to the previous section and set your `:url` port to 443:
+#
+#     config :transactions_api, TransactionsWeb.Endpoint,
+#       ...
+#       url: [host: "example.com", port: 443],
+#       https: [:inet6,
+#               port: 443,
+#               keyfile: System.get_env("SOME_APP_SSL_KEY_PATH"),
+#               certfile: System.get_env("SOME_APP_SSL_CERT_PATH")]
+#
+# Where those two env variables return an absolute path to
+# the key and cert in disk or a relative path inside priv,
+# for example "priv/ssl/server.key".
+#
+# We also recommend setting `force_ssl`, ensuring no data is
+# ever sent via http, always redirecting to https:
+#
+#     config :transactions_api, TransactionsWeb.Endpoint,
+#       force_ssl: [hsts: true]
+#
+# Check `Plug.SSL` for all available options in `force_ssl`.
+
+# ## Using releases
+#
+# If you are doing OTP releases, you need to instruct Phoenix
+# to start the server for all endpoints:
+#
+#     config :phoenix, :serve_endpoints, true
+#
+# Alternatively, you can configure exactly which server to
+# start per endpoint:
+#
+#     config :transactions_api, TransactionsWeb.Endpoint, server: true
+#
+
+# Finally import the config/prod.secret.exs
+# which should be versioned separately.
+import_config "prod.secret.exs"

config/test.exs

@@ -0,0 +1,19 @@
+use Mix.Config
+
+# We don't run a server during test. If one is required,
+# you can enable the server option below.
+config :transactions_api, TransactionsWeb.Endpoint,
+  http: [port: 4001],
+  server: false
+
+# Print only warnings and errors during test
+config :logger, level: :warn
+
+# Configure your database
+config :transactions_api, Transactions.Repo,
+  adapter: Ecto.Adapters.Postgres,
+  username: "postgres",
+  password: "postgres",
+  database: "transactions_api_test",
+  hostname: "localhost",
+  pool: Ecto.Adapters.SQL.Sandbox

lib/transactions_api.ex

@@ -0,0 +1,9 @@
+defmodule Transactions do
+  @moduledoc """
+  Transactions keeps the contexts that define your domain
+  and business logic.
+
+  Contexts are also responsible for managing your data, regardless
+  if it comes from the database, an external API or others.
+  """
+end

lib/transactions_api/application.ex

@@ -0,0 +1,31 @@
+defmodule Transactions.Application do
+  use Application
+
+  # See https://hexdocs.pm/elixir/Application.html
+  # for more information on OTP Applications
+  def start(_type, _args) do
+    import Supervisor.Spec
+
+    # Define workers and child supervisors to be supervised
+    children = [
+      # Start the Ecto repository
+      supervisor(Transactions.Repo, []),
+      # Start the endpoint when the application starts
+      supervisor(TransactionsWeb.Endpoint, []),
+      # Start your own worker by calling: Transactions.Worker.start_link(arg1, arg2, arg3)
+      # worker(Transactions.Worker, [arg1, arg2, arg3]),
+    ]
+
+    # See https://hexdocs.pm/elixir/Supervisor.html
+    # for other strategies and supported options
+    opts = [strategy: :one_for_one, name: Transactions.Supervisor]
+    Supervisor.start_link(children, opts)
+  end
+
+  # Tell Phoenix to update the endpoint configuration
+  # whenever the application is updated.
+  def config_change(changed, _new, removed) do
+    TransactionsWeb.Endpoint.config_change(changed, removed)
+    :ok
+  end
+end

lib/transactions_api/repo.ex

@@ -0,0 +1,11 @@
+defmodule Transactions.Repo do
+  use Ecto.Repo, otp_app: :transactions_api
+
+  @doc """
+  Dynamically loads the repository url from the
+  DATABASE_URL environment variable.
+  """
+  def init(_, opts) do
+    {:ok, Keyword.put(opts, :url, System.get_env("DATABASE_URL"))}
+  end
+end

lib/transactions_api_web.ex

@@ -0,0 +1,64 @@
+defmodule TransactionsWeb do
+  @moduledoc """
+  The entrypoint for defining your web interface, such
+  as controllers, views, channels and so on.
+
+  This can be used in your application as:
+
+      use TransactionsWeb, :controller
+      use TransactionsWeb, :view
+
+  The definitions below will be executed for every view,
+  controller, etc, so keep them short and clean, focused
+  on imports, uses and aliases.
+
+  Do NOT define functions inside the quoted expressions
+  below. Instead, define any helper function in modules
+  and import those modules here.
+  """
+
+  def controller do
+    quote do
+      use Phoenix.Controller, namespace: TransactionsWeb
+      import Plug.Conn
+      import TransactionsWeb.Router.Helpers
+      import TransactionsWeb.Gettext
+    end
+  end
+
+  def view do
+    quote do
+      use Phoenix.View, root: "lib/transactions_api_web/templates",
+                        namespace: TransactionsWeb
+
+      # Import convenience functions from controllers
+      import Phoenix.Controller, only: [get_flash: 2, view_module: 1]
+
+      import TransactionsWeb.Router.Helpers
+      import TransactionsWeb.ErrorHelpers
+      import TransactionsWeb.Gettext
+    end
+  end
+
+  def router do
+    quote do
+      use Phoenix.Router
+      import Plug.Conn
+      import Phoenix.Controller
+    end
+  end
+
+  def channel do
+    quote do
+      use Phoenix.Channel
+      import TransactionsWeb.Gettext
+    end
+  end
+
+  @doc """
+  When used, dispatch to the appropriate controller/view/etc.
+  """
+  defmacro __using__(which) when is_atom(which) do
+    apply(__MODULE__, which, [])
+  end
+end

lib/transactions_api_web/channels/user_socket.ex

@@ -0,0 +1,37 @@
+defmodule TransactionsWeb.UserSocket do
+  use Phoenix.Socket
+
+  ## Channels
+  # channel "room:*", TransactionsWeb.RoomChannel
+
+  ## Transports
+  transport :websocket, Phoenix.Transports.WebSocket
+  # transport :longpoll, Phoenix.Transports.LongPoll
+
+  # Socket params are passed from the client and can
+  # be used to verify and authenticate a user. After
+  # verification, you can put default assigns into
+  # the socket that will be set for all channels, ie
+  #
+  #     {:ok, assign(socket, :user_id, verified_user_id)}
+  #
+  # To deny connection, return `:error`.
+  #
+  # See `Phoenix.Token` documentation for examples in
+  # performing token verification on connect.
+  def connect(_params, socket) do
+    {:ok, socket}
+  end
+
+  # Socket id's are topics that allow you to identify all sockets for a given user:
+  #
+  #     def id(socket), do: "user_socket:#{socket.assigns.user_id}"
+  #
+  # Would allow you to broadcast a "disconnect" event and terminate
+  # all active sockets and channels for a given user:
+  #
+  #     TransactionsWeb.Endpoint.broadcast("user_socket:#{user.id}", "disconnect", %{})
+  #
+  # Returning `nil` makes this socket anonymous.
+  def id(_socket), do: nil
+end