Remove Mixfile from the main project, replace with example Elixir pro…

…ject (#22)

A dual-language build doesn't seem to be working for me, so this
uses only Erlang for the library and creates an example Elixir
project to verify that functionality.

README.md

@@ -48,6 +48,8 @@ dogstatsd:gauge("users.active", UserCount, #{ shard => ShardId, version => Vsn }
 
 ### Elixir
 
+For more details, see the example application in (examples/elixir)[examples/elixir]
+
 1. List dogstatsd dependency in your `mix.exs` file
 
 ```elixir
@@ -63,7 +65,7 @@ dogstatsd:gauge("users.active", UserCount, #{ shard => ShardId, version => Vsn }
 5. For custom metrics:
 
 ```elixir
-Dogstatsd.gauge("users.active", user_count, %{ :shard => shard_id, :version => vsn })
+:dogstatsd.gauge("users.active", user_count, %{ :shard => shard_id, :version => vsn })
 ```
 
 ### VM Stats

examples/elixir/.gitignore

@@ -0,0 +1,19 @@
+# The directory Mix will write compiled artifacts to.
+/_build
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover
+
+# The directory Mix downloads your dependencies sources to.
+/deps
+
+# Where 3rd-party dependencies like ExDoc output generated docs.
+/doc
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+elixir_example
+mix.lock

examples/elixir/README.md

@@ -0,0 +1,23 @@
+# ElixirExample
+
+Example of some Elixir code using the Dogstatsd library
+
+## Mix.exs
+
+`:dogstatsd` is listed as an application dependency so it will start before your application.
+
+```
+  def application do
+    [applications: [:logger, :dogstatsd]]
+  end
+```
+
+`:dogstatsd` is listed as a dependency so Mix will fetch it. (You will actually want to depend on `{:dogstatsd, "~> <version>", hex: :dogstatsde}`, not a relative path!)
+
+```
+  defp deps do
+    [
+      {:dogstatsd, path: "../../"}
+    ]
+  end
+```

examples/elixir/config/config.exs

@@ -0,0 +1,30 @@
+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+use Mix.Config
+
+# This configuration is loaded before any dependency and is restricted
+# to this project. If another project depends on this project, this
+# file won't be loaded nor affect the parent project. For this reason,
+# if you want to provide default values for your application for
+# 3rd-party users, it should be done in your "mix.exs" file.
+
+# You can configure for your application as:
+#
+#     config :elixir_example, key: :value
+#
+# And access this configuration in your application as:
+#
+#     Application.get_env(:elixir_example, :key)
+#
+# Or configure a 3rd-party app:
+#
+#     config :logger, level: :info
+#
+
+# It is also possible to import configuration files, relative to this
+# directory. For example, you can emulate configuration per environment
+# by uncommenting the line below and defining dev.exs, test.exs and such.
+# Configuration from the imported file will override the ones defined
+# here (which is why it is important to import them last).
+#
+#     import_config "#{Mix.env}.exs"

examples/elixir/lib/elixir_example.ex

@@ -0,0 +1,12 @@
+defmodule ElixirExample do
+  require Logger
+
+  def main(_) do
+    Logger.info "Example dogstatsd calls"
+    :dogstatsd.event("Test", "Testing dogstatsd library", :info, :low)
+    :dogstatsd.gauge("connection.active", 5)
+    :dogstatsd.increment("requests.image", 1, %{:file_type => "png"})
+    :dogstatsd.timer("connection.latency", 35, %{:path => "/hello/world.png"})
+    :dogstatsd.set("user.recent_ids", 2054)
+  end
+end

examples/elixir/mix.exs

@@ -0,0 +1,35 @@
+defmodule Elixir.Mixfile do
+  use Mix.Project
+
+  def project do
+    [app: :elixir_example,
+     version: "0.1.0",
+     elixir: "~> 1.3",
+     build_embedded: Mix.env == :prod,
+     start_permanent: Mix.env == :prod,
+     escript: [main_module: ElixirExample],
+     deps: deps()]
+  end
+
+  # Configuration for the OTP application
+  #
+  # Type "mix help compile.app" for more information
+  def application do
+    [applications: [:logger, :dogstatsd]]
+  end
+
+  # Dependencies can be Hex packages:
+  #
+  #   {:mydep, "~> 0.3.0"}
+  #
+  # Or git/path repositories:
+  #
+  #   {:mydep, git: "https://github.com/elixir-lang/mydep.git", tag: "0.1.0"}
+  #
+  # Type "mix help deps" for more examples and options
+  defp deps do
+    [
+      {:dogstatsd, path: "../../"}
+    ]
+  end
+end

examples/elixir/test/elixir_example_test.exs

@@ -0,0 +1,8 @@
+defmodule ElixirExampleTest do
+  use ExUnit.Case
+  doctest ElixirExample
+
+  test "the truth" do
+    assert 1 + 1 == 2
+  end
+end

examples/elixir/test/test_helper.exs

@@ -0,0 +1 @@
+ExUnit.start()

scripts/install-deps.bash

@@ -13,7 +13,6 @@ elif [ $ELIXIR_VSN ]; then
     source $HOME/.kiex/elixirs/elixir-${ELIXIR_VSN}.env
     mix local.hex --force
     mix local.rebar --force
-    mix deps.get
 else
     echo Unknown rebar version requested: $REBAR_VSN
     exit 1

scripts/run-tests.bash

@@ -12,8 +12,11 @@ elif [ $REBAR_VSN -eq 3 ]; then
     ./vendor/rebar3 eunit
 elif [ $ELIXIR_VSN ]; then
     source $HOME/.kiex/elixirs/elixir-${ELIXIR_VSN}.env
+    cd examples/elixir
+    mix deps.get
     mix compile
-    mix test
+    mix escript.build
+    ./elixir_example
 else
     echo Unknown rebar version requested: $REBAR_VSN
     exit 1

src/dogstatsd.app.src

@@ -17,5 +17,5 @@
   {links, [{"GitHub", "https://github.com/WhoopInc/dogstatsde"}]},
   {pkg_name, "dogstatsde"},
   {include_files, ["mix.exs"]},
-  {build_tools, [<<"rebar3">>, <<"mix">>]}
+  {build_tools, [<<"rebar3">>]}
  ]}.