Ok, I’ve an app that I intend to use releases on future, so I decided to create a runtime.exs, that means: generic configuration file that is evaluated on runtime on every env, correct?
Also, as a Phoenix app, we have config.exs, a config file that is evaluated at compile time, correct?
Doubt number one: which one come first: runtime or compile time?
My problem:
This is my config.exs:
import Config
config :lovelace,
ecto_repos: [Lovelace.Repo],
generators: [binary_id: true]
# Configures the endpoint
config :lovelace, LovelaceWeb.Endpoint,
url: [host: "localhost"],
secret_key_base: "+41x5h8Xbn3ilu0YZ5UShcHI2/qhY3JGZpT8ockkzdkTHahMJe177aE2dcyQ5CAn",
render_errors: [view: LovelaceWeb.ErrorView, accepts: ~w(html json), layout: false],
pubsub_server: Lovelace.PubSub,
live_view: [signing_salt: "XP1985o+"]
# Configures Elixir's Logger
config :logger, :console,
format: "$time $metadata[$level] $message\n",
metadata: [:request_id]
# Use Jason for JSON parsing in Phoenix
config :phoenix, :json_library, Jason
config :tesla, adapter: Tesla.Adapter.Hackney
config :lovelace, pubsub_channel: Lovelace.PubSub
# Import environment specific config. This must remain at the bottom
# of this file so it overrides the configuration defined above.
import_config "#{config_env()}.exs"
And this is my runtime.exs:
import Config
get_env_var = fn var_name, default ->
value = System.get_env(var_name)
cond do
default != :none ->
default
is_nil(value) or value == "" ->
raise """
Environment variable #{var_name} is missing!
"""
true ->
value
end
end
# server config
app_host = get_env_var.("HOST", "localhost")
app_port = get_env_var.("PORT", "4000") |> String.to_integer()
# general config
config :lovelace, bot_name: "lovelace"
if config_env() == :prod do
# bot config
bot_token = get_env_var.("BOT_TOKEN", :none)
# database config
db_url = get_env_var.("DB_URL", :none)
pool_size = get_env_var.("POOL_SIZE", "2") |> String.to_integer()
# server config
secret_key_base = get_env_var.("SECRET_KEY_BASE", :none)
config :lovelace, bot_token: bot_token
config :lovelace, Lovelace.Repo,
url: db_url,
pool_size: pool_size
config :lovelace, Lovelace.Endpoint,
server: true,
url: [host: app_host, port: app_port],
http: [
port: app_port,
transport_options: [socket_opts: [:inet6]]
],
secret_key_base: secret_key_base
end
When I run:
MIX_ENV=prod DB_URL=xxxxx SECRET_KEY_BASE=xxxxx BOT_TOKEN=xxxx PORT=4000 mix phx.server
where “xxxx…” == some real config,
I receive this output:
21:54:54.910 [info] Starting Elixir.LovelaceIntegration.Telegram.Consumers.MessageHandler
21:54:55.071 [info] Access LovelaceWeb.Endpoint at http://localhost
So, the server don’t really starts…
When I execute the same command, but using iex -S mix, and then running Application.get_all_env :lovelace, I receive this result:
iex(1)> Application.get_all_env :lovelace
[
{Lovelace.Repo,
[
url: "xxxxxx",
pool_size: 2
]},
{:pubsub_channel, Lovelace.PubSub},
{:ecto_repos, [Lovelace.Repo]},
{:bot_token, "xxxxx"},
{:bot_name, "lovelace"},
{Lovelace.Endpoint,
[
server: true,
url: [host: "localhost", port: 4000],
http: [port: 4000, transport_options: [socket_opts: [:inet6]]],
secret_key_base: "xxxxxx"
]},
{:generators, [binary_id: true]},
{LovelaceWeb.Endpoint,
[
url: [host: "localhost"],
secret_key_base: "xxxxx",
render_errors: [
view: LovelaceWeb.ErrorView,
accepts: ["html", "json"],
layout: false
],
pubsub_server: Lovelace.PubSub,
live_view: [signing_salt: "XP1985o+"]
]}
]
Again, “xxxx” == sensity info
So, it seems that the config.exs and runtime.exs configs, actually, only the LovelaceWeb.Endpoint config, isn’t being merged, so the last one (config.exs) is being evaluated.
If I run mix phx.server, on dev env, server starts correctly:
Generated lovelace app
[info] Starting Elixir.LovelaceIntegration.Telegram.Consumers.MessageHandler
[info] Running LovelaceWeb.Endpoint with cowboy 2.8.0 at 0.0.0.0:4000 (http)
[info] Access LovelaceWeb.Endpoint at http://localhost:4000
webpack is watching the files…
[hardsource:321e22a3] Using 1 MB of disk space.
[hardsource:321e22a3] Tracking node dependencies with: yarn.lock.
[hardsource:321e22a3] Reading from cache 321e22a3...
Hash: 59927b50d778eaad2717
Version: webpack 4.41.5
Time: 212ms
Built at: 02/16/2021 10:02:48 PM
Asset Size Chunks Chunk Names
../css/app.css 12.9 KiB app [emitted] app
../favicon.ico 1.23 KiB [emitted]
../images/phoenix.png 13.6 KiB [emitted]
../robots.txt 202 bytes [emitted]
app.js 278 KiB app [emitted] app
Entrypoint app = ../css/app.css app.js
[0] multi ./js/app.js 28 bytes {app} [built]
+ 9 hidden modules
Also tests works fine!
What I’m doing wrong?
