feat: Deploy on fly

.dockerignore

@@ -0,0 +1,45 @@
+# This file excludes paths from the Docker build context.
+#
+# By default, Docker's build context includes all files (and folders) in the
+# current directory. Even if a file isn't copied into the container it is still sent to
+# the Docker daemon.
+#
+# There are multiple reasons to exclude files from the build context:
+#
+# 1. Prevent nested folders from being copied into the container (ex: exclude
+#    /assets/node_modules when copying /assets)
+# 2. Reduce the size of the build context and improve build time (ex. /build, /deps, /doc)
+# 3. Avoid sending files containing sensitive information
+#
+# More information on using .dockerignore is available here:
+# https://docs.docker.com/engine/reference/builder/#dockerignore-file
+
+.dockerignore
+
+# Ignore git, but keep git HEAD and refs to access current commit hash if needed:
+#
+# $ cat .git/HEAD | awk '{print ".git/"$2}' | xargs cat
+# d0b8727759e1e0e7aa3d41707d12376e373d5ecc
+.git
+!.git/HEAD
+!.git/refs
+
+# Common development/test artifacts
+/cover/
+/doc/
+/test/
+/tmp/
+.elixir_ls
+
+# Mix artifacts
+/_build/
+/deps/
+*.ez
+
+# Generated on crash by the VM
+erl_crash.dump
+
+# Static artifacts - These should be fetched and built inside the Docker image
+/assets/node_modules/
+/priv/static/assets/
+/priv/static/cache_manifest.json

Dockerfile

@@ -0,0 +1,97 @@
+# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian
+# instead of Alpine to avoid DNS resolution issues in production.
+#
+# https://hub.docker.com/r/hexpm/elixir/tags?page=1&name=ubuntu
+# https://hub.docker.com/_/ubuntu?tab=tags
+#
+# This file is based on these images:
+#
+#   - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
+#   - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20240130-slim - for the release image
+#   - https://pkgs.org/ - resource for finding needed packages
+#   - Ex: hexpm/elixir:1.15.7-erlang-26.2.1-debian-bullseye-20240130-slim
+#
+ARG ELIXIR_VERSION=1.15.7
+ARG OTP_VERSION=26.2.1
+ARG DEBIAN_VERSION=bullseye-20240130-slim
+
+ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
+ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"
+
+FROM ${BUILDER_IMAGE} as builder
+
+# install build dependencies
+RUN apt-get update -y && apt-get install -y build-essential git \
+    && apt-get clean && rm -f /var/lib/apt/lists/*_*
+
+# prepare build dir
+WORKDIR /app
+
+# install hex + rebar
+RUN mix local.hex --force && \
+    mix local.rebar --force
+
+# set build ENV
+ENV MIX_ENV="prod"
+
+# install mix dependencies
+COPY mix.exs mix.lock ./
+RUN mix deps.get --only $MIX_ENV
+RUN mkdir config
+
+# copy compile-time config files before we compile dependencies
+# to ensure any relevant config change will trigger the dependencies
+# to be re-compiled.
+COPY config/config.exs config/${MIX_ENV}.exs config/
+RUN mix deps.compile
+
+COPY priv priv
+
+COPY lib lib
+
+COPY assets assets
+
+# compile assets
+RUN mix assets.deploy
+
+# Compile the release
+RUN mix compile
+
+# Changes to config/runtime.exs don't require recompiling the code
+COPY config/runtime.exs config/
+
+COPY rel rel
+RUN mix release
+
+# start a new build stage so that the final image will only contain
+# the compiled release and other runtime necessities
+FROM ${RUNNER_IMAGE}
+
+RUN apt-get update -y && \
+  apt-get install -y libstdc++6 openssl libncurses5 locales ca-certificates \
+  && apt-get clean && rm -f /var/lib/apt/lists/*_*
+
+# Set the locale
+RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
+
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
+
+WORKDIR "/app"
+RUN chown nobody /app
+
+# set runner ENV
+ENV MIX_ENV="prod"
+
+# Only copy the final release from the build stage
+COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/postland ./
+
+USER nobody
+
+# If using an environment that doesn't automatically reap zombie processes, it is
+# advised to add an init process such as tini via `apt-get install`
+# above and adding an entrypoint. See https://github.com/krallin/tini for details
+# ENTRYPOINT ["/tini", "--"]
+
+CMD ["/app/bin/server"]

fly.toml

@@ -0,0 +1,37 @@
+# fly.toml app configuration file generated for postland on 2024-09-25T19:39:34-05:00
+#
+# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
+#
+
+app = 'postland'
+primary_region = 'dfw'
+kill_signal = 'SIGTERM'
+
+[build]
+
+[env]
+  DATABASE_PATH = '/mnt/name/name.db'
+  PHX_HOST = 'postland.fly.dev'
+  PORT = '8080'
+
+[[mounts]]
+  source = 'name'
+  destination = '/mnt/name'
+
+[http_service]
+  internal_port = 8080
+  force_https = true
+  auto_stop_machines = 'stop'
+  auto_start_machines = true
+  min_machines_running = 0
+  processes = ['app']
+
+  [http_service.concurrency]
+    type = 'connections'
+    hard_limit = 1000
+    soft_limit = 1000
+
+[[vm]]
+  memory = '1gb'
+  cpu_kind = 'shared'
+  cpus = 1

lib/activity_pub/headers.ex

@@ -91,7 +91,6 @@ defmodule ActivityPub.Headers do
 
     case Req.get(request) do
       {:ok, result} ->
-        dbg(result)
         key_map = result.body["publicKey"]
 
         if key_map["id"] == key_id do

lib/postland/activities.ex

@@ -0,0 +1,10 @@
+defmodule Postland.Activities do
+  alias Postland.Activity
+  alias Postland.Repo
+
+  def record_activity(params) do
+    params
+    |> Activity.changeset()
+    |> Repo.insert()
+  end
+end

lib/postland/activity.ex

@@ -0,0 +1,25 @@
+defmodule Postland.Activity do
+  use Ecto.Schema
+
+  import Ecto.Changeset
+
+  @primary_key {:id, :binary_id, autogenerate: false}
+  schema "activities" do
+    field :actor_id, :string
+    field :type, :string
+    field :data, :map
+  end
+
+  def changeset(attrs) do
+    attrs = %{
+      "actor_id" => Map.get(attrs, "actor"),
+      "type" => Map.get(attrs, "type"),
+      "data" => attrs
+    }
+
+    %__MODULE__{}
+    |> cast(attrs, [:actor_id, :type, :data])
+    |> validate_required(:data)
+    |> validate_required(:type)
+  end
+end

lib/postland/application.ex

@@ -21,6 +21,8 @@ defmodule Postland.Application do
       Postland.Setup
     ]
 
+    Postland.Release.migrate()
+
     # See https://hexdocs.pm/elixir/Supervisor.html
     # for other strategies and supported options
     opts = [strategy: :one_for_one, name: Postland.Supervisor]

lib/postland/release.ex

@@ -0,0 +1,41 @@
+defmodule Postland.Release do
+  @moduledoc """
+  Used for executing DB release tasks when run in production without Mix
+  installed.
+  """
+  @app :postland
+
+  def create_db do
+    load_app()
+
+    case Postland.Repo.__adapter__().storage_up(Postland.Repo.config()) do
+      {:error, :already_up} ->
+        :ok
+      other ->
+        other
+    end
+  end
+
+  def migrate do
+    load_app()
+
+    create_db()
+
+    for repo <- repos() do
+      {:ok, _, _} = Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :up, all: true))
+    end
+  end
+
+  def rollback(repo, version) do
+    load_app()
+    {:ok, _, _} = Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :down, to: version))
+  end
+
+  defp repos do
+    Application.fetch_env!(@app, :ecto_repos)
+  end
+
+  defp load_app do
+    Application.load(@app)
+  end
+end

lib/postland_web/components/layouts/root.html.heex

@@ -39,14 +39,6 @@
             </.link>
           </li>
         <% else %>
-          <li>
-            <.link
-              href={~p"/users/register"}
-              class="text-[0.8125rem] leading-6  font-semibold hover:text-purple-300"
-            >
-              Register
-            </.link>
-          </li>
           <li>
             <.link
               href={~p"/users/log_in"}

lib/postland_web/controllers/actor_json.ex

@@ -15,6 +15,7 @@ defmodule PostlandWeb.ActorJSON do
       "type" => "Person",
       "preferredUsername" => user.username,
       "inbox" => url(~p"/inbox"),
+      "outbox" => url(~p"/outbox"),
       "publicKey" => %{
         "id" => url(~p"/actor#main-key"),
         "owner" => url(~p"/actor"),

lib/postland_web/controllers/inbox_controller.ex

@@ -0,0 +1,22 @@
+defmodule PostlandWeb.InboxController do
+  use PostlandWeb, :controller
+
+  require Logger
+
+  alias ActivityPub.Headers
+  alias Postland.Activities
+
+  def post(conn, params) do
+    if Headers.verify(conn.method, conn.request_path, conn.req_headers) do
+      case Activities.record_activity(params) do
+        {:ok, _activity} ->
+          render(conn, :ok)
+        error ->
+          Logger.error(error)
+          render(conn, :unprocessable_entity)
+      end
+    else
+      render(conn, :forbidden)
+    end
+  end
+end

lib/postland_web/controllers/outbox_controller.ex

@@ -0,0 +1,21 @@
+defmodule PostlandWeb.OutboxController do
+   use PostlandWeb, :controller
+
+   alias ActivityPub.Headers
+
+  def get(conn, _params) do
+    json = %{
+      "@context" => "https://www.w3.org/ns/activitystreams",
+      "summary" => "",
+      "type" => "OrderedCollection",
+      "totalItems" => 0,
+      "orderedItems" => []
+    }
+
+    if Headers.verify(conn.method, conn.request_path, conn.req_headers) do
+      render(conn, json)
+    else
+      render(conn, :forbidden)
+    end
+  end
+end

lib/postland_web/router.ex

@@ -27,6 +27,8 @@ defmodule PostlandWeb.Router do
     get "/.well-known/webfinger", WebfingerController, :get
 
     get "/actor", ActorController, :get
+    get "/inbox", InboxController, :post
+    get "/outbox", OutboxController, :get
   end
 
   scope "/", PostlandWeb do

priv/repo/migrations/20240924132400_create_activities.exs

@@ -0,0 +1,15 @@
+defmodule Postland.Repo.Migrations.CreateActivities do
+  use Ecto.Migration
+
+  def change do
+    create table("activities", primary_key: false) do
+      add :id, :text, primary_key: true
+      add :actor_id, :text
+      add :type, :text, null: false
+      add :data, :map
+    end
+
+    create index("activities", [:actor_id, :type])
+    create index("activities", [:actor_id])
+  end
+end

rel/env.sh.eex

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# configure node for distributed erlang with IPV6 support
+export ERL_AFLAGS="-proto_dist inet6_tcp"
+export ECTO_IPV6="true"
+export DNS_CLUSTER_QUERY="${FLY_APP_NAME}.internal"
+export RELEASE_DISTRIBUTION="name"
+export RELEASE_NODE="${FLY_APP_NAME}-${FLY_IMAGE_REF##*-}@${FLY_PRIVATE_IP}"
+
+# Uncomment to send crash dumps to stderr
+# This can be useful for debugging, but may log sensitive information
+# export ERL_CRASH_DUMP=/dev/stderr
+# export ERL_CRASH_DUMP_BYTES=4096

rel/overlays/bin/migrate

@@ -0,0 +1,5 @@
+#!/bin/sh
+set -eu
+
+cd -P -- "$(dirname -- "$0")"
+exec ./postland eval Postland.Release.migrate

rel/overlays/bin/migrate.bat

@@ -0,0 +1 @@
+call "%~dp0\postland" eval Postland.Release.migrate

rel/overlays/bin/server

@@ -0,0 +1,5 @@
+#!/bin/sh
+set -eu
+
+cd -P -- "$(dirname -- "$0")"
+PHX_SERVER=true exec ./postland start

rel/overlays/bin/server.bat

@@ -0,0 +1,2 @@
+set PHX_SERVER=true
+call "%~dp0\postland" start

test/activity_pub/headers_test.exs

@@ -13,10 +13,13 @@ defmodule ActivityPub.HeadersTest do
       |> :public_key.pem_entry_decode()
 
     actor_fetcher = fn _ ->
-      Postland.KeyFixtures.public()
+      pub_key =
-      |> :public_key.pem_decode()
+        Postland.KeyFixtures.public()
-      |> hd()
+        |> :public_key.pem_decode()
-      |> :public_key.pem_entry_decode()
+        |> hd()
+        |> :public_key.pem_entry_decode()
+
+      {:ok, pub_key}
     end
 
     check all(
@@ -25,7 +28,7 @@ defmodule ActivityPub.HeadersTest do
             host1 <- StreamData.string([?a..?z, ?0..?9, ?-]),
             host2 <- StreamData.string([?a..?z, ?0..?9, ?-])
           ) do
-      url = URI.parse("#{host1}/inbox")
+      url = URI.parse("#{host1}.com/inbox")
       actor_url = "#{host2}/actor"
 
       headers = signing_headers(method, url, body, actor_url, private)

test/postland_web/live/user_login_live_test.exs

@@ -5,13 +5,6 @@ defmodule PostlandWeb.UserLoginLiveTest do
   import Postland.AccountsFixtures
 
   describe "Log in page" do
-    test "renders log in page", %{conn: conn} do
-      {:ok, _lv, html} = live(conn, ~p"/users/log_in")
-
-      assert html =~ "Log in"
-      assert html =~ "Register"
-    end
-
     test "redirects if already logged in", %{conn: conn} do
       result =
         conn