Specifies the API for using a custom HTTP Client.

The default HTTP client is LoggerTelegramBackend.HTTPClient.Finch.

To configure a different HTTP client, implement the LoggerTelegramBackend.HTTPClient behaviour and change the :client configuration:

config :logger, LoggerTelegramBackend,
  client: MyHTTPClient

Example

A client implementation based on :hackney could look like this:

defmodule MyHTTPClient do
  @behaviour LoggerTelegramBackend.HTTPClient

  @hackney_pool_name :logger_telegram_backend_pool

  @impl true
  def child_spec(opts) do
    :hackney_pool.child_spec(@hackney_pool_name, opts)
  end

  @impl true
  def request(method, url, headers, body, opts) do
    opts = Keyword.merge(opts, pool: @hackney_pool_name) ++ [:with_body]

    case :hackney.request(method, url, headers, body, opts) do
      {:ok, _status, _headers, _body} = result -> result
      {:error, _reason} = error -> error
    end
  end
end