feat: add region and instance id to logger

[abc3]

This PR adds the region and instance id to the logger metadata for the client/db handlers and manager process.

[abc3]

Hey @supabase/dashbit, is there an easy way to globally set up a value in metadata for all processes? For example, it would be nice to see the region and instance id values in all log messages

[josevalim]

Starting from Elixir v1.15, you should be able to set metadata in your config/runtime.exs:

config :logger, :metadata, [...]

[abc3]

Wow, nice! But we cannot upgrade to v1.15 because one of our dependencies doesn't support this version. We'll try to upgrade it first

[josevalim]

Which dep is problematic?

Anyway, you can also do this in your application.ex:

primary_config = :logger.get_primary_config()
:ok = :logger.set_primary_config(:metadata, Enum.into([...yourmetadata...], primary_config.metadata))

It requires Erlang/OTP 24.

[abc3]

Which dep is problematic?

the Logflare Erlang client uses Etso, which doesn't work with Erlang 26 due to an old Ecto version

== Compilation error in file lib/ecto/query.ex ==
** (Kernel.TypespecError) lib/ecto/query.ex:430: type dynamic/0 is a built-in type and it cannot be redefined
    (elixir 1.15.4) lib/kernel/typespec.ex:961: Kernel.Typespec.compile_error/2
    (stdlib 5.0.2) lists.erl:1599: :lists.foldl_1/3
    (elixir 1.15.4) lib/kernel/typespec.ex:226: Kernel.Typespec.translate_typespecs_for_module/2

Anyway, you can also do this in your application.ex:

primary_config = :logger.get_primary_config()
:ok = :logger.set_primary_config(:metadata, Enum.into([...yourmetadata...], primary_config.metadata))

It requires Erlang/OTP 24.

That works perfectly, thanks! 🔥