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A Utilitary package functionalities modules for improve a secure performatic development.
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lib/krug/ecto/enviroment.reader.ex
defmodule Krug.EnviromentReader do
@moduledoc """
Provides a mechanism to simplificate the Ecto db configuration on build time.
Should be used whit a module that implements ```Krug.EctoEnviromentDecisor``` behavior
and other module that implements ```Krug.EctoEnviroment``` behavior.
Utilization Example:
```elixir
defmodule MyApp.Enviroment.Reader do
use Krug.EnviromentReader, decisor: MyApp.EnviromentDecisor, enviroment: MyApp.Enviroment
end
```
After maked this, we could use it to configure a Ecto Repo
```elixir
defmodule MyApp.App.Repo do
use Ecto.Repo, otp_app: :ex_app, adapter: Ecto.Adapters.MyXQL
alias MyApp.Enviroment.Reader
def init(_type, config) do
config = Keyword.put(config, :hostname, Reader.read_key_value("APPDB_HOST"))
config = Keyword.put(config, :port, String.to_integer(Reader.read_key_value("APPDB_PORT")))
config = Keyword.put(config, :database, Reader.read_key_value("APPDB_DATABASE"))
config = Keyword.put(config, :username, Reader.read_key_value("APPDB_USERNAME"))
config = Keyword.put(config, :password, Reader.read_key_value("APPDB_PASSWORD"))
config = Keyword.put(config, :pool_size, 10)
config = Keyword.put(config, :timeout, 60_000)
config = Keyword.put(config, :ownership_timeout, 60_000)
config = Keyword.put(config, :queue_target, 500)
config = Keyword.put(config, :queue_interval, 10_000)
{:ok, config}
end
end
```
"""
@moduledoc since: "0.2.1"
defmacro __using__(opts) do
quote bind_quoted: [opts: opts] do
@decisor Keyword.get(opts,:decisor)
@enviroment Keyword.get(opts,:enviroment)
alias Krug.StructUtil
def read_key_value(key) do
list = @decisor.get_enviroment_type() |> @enviroment.get_enviroment()
StructUtil.get_key_par_value_from_list(key,list)
end
end
end
end