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.github/workflows/ci.yaml

@@ -0,0 +1,63 @@
+name: Continuous integration
+on:
+  push:
+    branches: ["*"]
+    tags: ["v*"]
+  pull_request:
+    branches: ["develop"]
+
+jobs:
+  test:
+    # runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
+
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+      rabbitmq:
+        image: rabbitmq:3.8
+        env:
+          RABBITMQ_DEFAULT_USER: guest
+          RABBITMQ_DEFAULT_PASS: guest
+        ports:
+          - 5672:5672
+
+    strategy:
+      matrix:
+        include:
+          # NOTE: One of the dependecies (rabbit_common) is incompatible with OTP 27.
+          - elixir-version: "1.17"
+            otp-version: "26"
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: erlef/setup-beam@v1
+        id: beam
+        with:
+          elixir-version: ${{ matrix.elixir-version }}
+          otp-version: ${{ matrix.otp-version }}
+
+      - name: Fetch deps
+        run: |
+          mix deps.get
+
+      - name: Run tests
+        run: |
+          # This is basically `mix test` with coverage enabled.
+          mix coveralls.json
+
+      - name: Lints
+        run: |
+          mix format --check-formatted
+          # This will mention FIXME and TODO comments without failing, any
+          # other issue fails the build.
+          mix credo

Dockerfile

@@ -1,4 +1,5 @@
-FROM elixir:1.9 as elixir
+# NOTE: One of the dependecies (rabbit_common) is incompatible with OTP 27.
+FROM elixir:1.17-otp-26 as elixir
 ENV MIX_ENV="prod"
 COPY lib lib
 COPY config config
@@ -10,7 +11,7 @@ RUN mix deps.get
 RUN mix deps.compile
 RUN mix compile
 
-FROM elixir:1.9-alpine
+FROM elixir:1.17-otp-26-alpine
 ENV MIX_ENV="prod"
 RUN mix local.hex --force
 RUN mix local.rebar --force

config/config.exs

@@ -3,7 +3,7 @@
 #
 # This configuration file is loaded before any dependency and
 # is restricted to this project.
-use Mix.Config
+import Config
 
 # Configures the endpoint
 config :turn_junebug_expressway, TurnJunebugExpresswayWeb.Endpoint,

config/dev.exs

@@ -1,4 +1,4 @@
-use Mix.Config
+import Config
 
 # For development, we disable any cache and enable
 # debugging and code reloading.

config/prod.exs

@@ -1,4 +1,4 @@
-use Mix.Config
+import Config
 
 # For production, we often load configuration from external
 # sources, such as your system environment. For this reason,

config/prod.secret.exs

@@ -1,4 +1,4 @@
-use Mix.Config
+import Config
 
 # In this file, we keep production configuration that
 # you'll likely want to automate and keep away from

config/test.exs

@@ -1,4 +1,4 @@
-use Mix.Config
+import Config
 
 # We don't run a server during test. If one is required,
 # you can enable the server option below.
@@ -11,7 +11,7 @@ config :turn_junebug_expressway,
   rapidpro_client: TurnJunebugExpressway.Backends.ClientMock
 
 # Print only warnings and errors during test
-config :logger, level: :warn
+config :logger, level: :warning
 
 config :tesla, adapter: Tesla.Mock
 

lib/turn_junebug_expressway/application.ex

@@ -4,8 +4,6 @@ defmodule TurnJunebugExpressway.Application do
   # See https://hexdocs.pm/elixir/Application.html
   # for more information on OTP Applications
   def start(_type, _args) do
-    import Supervisor.Spec
-
     # Metrics
     TurnJunebugExpresswayWeb.PhoenixInstrumenter.setup()
     TurnJunebugExpresswayWeb.PipelineInstrumenter.setup()
@@ -14,11 +12,11 @@ defmodule TurnJunebugExpressway.Application do
     # Define workers and child supervisors to be supervised
     children = [
       # Start the endpoint when the application starts
-      supervisor(TurnJunebugExpresswayWeb.Endpoint, []),
+      TurnJunebugExpresswayWeb.Endpoint,
       # Start your own worker by calling: TurnJunebugExpressway.Worker.start_link(arg1, arg2, arg3)
-      # worker(TurnJunebugExpressway.Worker, [arg1, arg2, arg3]),
-      worker(TurnJunebugExpressway.MessageEngine, []),
-      worker(TurnJunebugExpressway.HttpPushEngine, []),
+      # {TurnJunebugExpressway.Worker, [arg1, arg2, arg3]},
+      {TurnJunebugExpressway.MessageEngine, name: TurnJunebugExpressway.MessageEngine},
+      {TurnJunebugExpressway.HttpPushEngine, name: TurnJunebugExpressway.HttpPushEngine},
       {Task.Supervisor, name: Task.ExpressSupervisor, restart: :transient}
     ]
 

lib/turn_junebug_expressway/behaviours/client_behaviour.ex

@@ -19,8 +19,7 @@ defmodule TurnJunebugExpressway.Behaviours.ClientBehaviour do
       def format_error(body) when is_map(body) do
         body
         |> Map.keys()
-        |> Enum.map(fn key -> "#{key}: #{format_error(body[key])}" end)
-        |> Enum.join(", ")
+        |> Enum.map_join(", ", fn key -> "#{key}: #{format_error(body[key])}" end)
       end
 
       def format_error(body) do

lib/turn_junebug_expressway_web/utils.ex

@@ -1,8 +1,8 @@
 defmodule TurnJunebugExpresswayWeb.Utils do
   use Tesla
 
-  @turn_client Application.get_env(:turn_junebug_expressway, :turn_client)
-  @rapidpro_client Application.get_env(:turn_junebug_expressway, :rapidpro_client)
+  @turn_client Application.compile_env(:turn_junebug_expressway, :turn_client)
+  @rapidpro_client Application.compile_env(:turn_junebug_expressway, :rapidpro_client)
 
   def get_env(section, key) do
     Application.get_env(:turn_junebug_expressway, section)[key]
@@ -15,7 +15,8 @@ defmodule TurnJunebugExpresswayWeb.Utils do
       |> Map.get("x-turn-hook-signature")
 
     our_hmac =
-      :crypto.hmac(
+      :crypto.mac(
+        :hmac,
         :sha256,
         get_env(:turn, :hmac_secret),
         conn.private[:raw_body]
@@ -112,7 +113,8 @@ defmodule TurnJunebugExpresswayWeb.Utils do
   end
 
   def forward_event(event) do
-    IO.inspect(event)
+    IO.puts("FORWARD_EVENT: #{inspect(event)}")
+
     case event |> get_event_status do
       {:ignore, _} ->
         :ok
@@ -194,7 +196,7 @@ defmodule TurnJunebugExpresswayWeb.Utils do
     end
   end
 
-  def is_queue_stuck(rate, messages) do
+  def queue_stuck?(rate, messages) do
     case {rate, messages} do
       {rate, messages} when rate <= 0 and messages > 0 -> true
       {_, _} -> false
@@ -209,7 +211,7 @@ defmodule TurnJunebugExpresswayWeb.Utils do
 
     %{
       "name" => "#{queue_name}",
-      "stuck" => is_queue_stuck(rate, messages),
+      "stuck" => queue_stuck?(rate, messages),
       "messages" => messages
     }
   end

mix.exs

@@ -5,9 +5,9 @@ defmodule TurnJunebugExpressway.Mixfile do
     [
       app: :turn_junebug_expressway,
       version: "0.0.18",
-      elixir: "~> 1.9",
+      elixir: "~> 1.17",
       elixirc_paths: elixirc_paths(Mix.env()),
-      compilers: [:phoenix, :gettext] ++ Mix.compilers(),
+      compilers: [:gettext] ++ Mix.compilers(),
       start_permanent: Mix.env() == :prod,
       aliases: aliases(),
       deps: deps(),
@@ -40,27 +40,32 @@ defmodule TurnJunebugExpressway.Mixfile do
   # Type `mix help deps` for examples and options.
   defp deps do
     [
-      {:phoenix, "~> 1.4"},
-      {:phoenix_pubsub, "~> 1.1"},
+      {:phoenix, "~> 1.7"},
+      {:phoenix_view, "~> 2.0"},
+      {:phoenix_pubsub, "~> 2.0"},
       {:ecto_sql, "~> 3.0"},
       {:phoenix_ecto, "~> 4.0"},
       {:postgrex, ">= 0.15.0"},
       {:gettext, "~> 0.17.1"},
       {:prometheus_phoenix, "~> 1.3.0"},
       {:prometheus_plugs, "~> 1.1.5"},
-      {:prometheus_process_collector, "~> 1.6.0"},
+      # It looks like we don't actually need this.
+      # {:prometheus_process_collector, "~> 1.6.0"},
       {:plug_cowboy, "~> 2.1"},
       {:jason, "~> 1.1"},
-      {:amqp, "~> 1.3"},
+      {:amqp, "~> 3.3"},
       {:timex, "~> 3.5"},
       {:tesla, "~> 1.2"},
       {:mock, "~> 0.3.2"},
       {:mox, "~> 0.5", only: :test},
       {:sentry, "~> 7.2"},
 
+      # We need to override this to make it compile with newer Elixir/OTP.
+      {:ssl_verify_fun, "~> 1.1.5", manager: :rebar3, override: true},
+
       # Dev/test/build tools.
       {:excoveralls, "~> 0.8", only: :test},
-      {:credo, "~> 0.9", only: [:dev, :test], runtime: false}
+      {:credo, "~> 1.7", only: [:dev, :test], runtime: false}
     ]
   end