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phauxth
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0.8.0
Authentication library for Phoenix, and other Plug-based, web applications
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Files
lib/phauxth/log.ex
defmodule Phauxth.Log do
@moduledoc """
Logging functions for Phauxth.
## Format
Phauxth uses logfmt to provide a standard logging format.
15:31:08.575 [warn] path=/session/create user=ray@mail.com message=invalid password
* path - the request path
* user - the user identifier (one of email, username, nil)
* message - error / info message
* meta - additional metadata that does not fit into any of the other categories
"""
require Logger
defstruct user: "nil", message: "", meta: []
@doc """
Returns the log message.
The level at which logging starts can be configured by changing
the `log_level` value in the config file.
The default log_level is :info, but if you only want warnings printed
out, add the following to the config file:
config :phauxth,
log_level: :warn
And if you do not want Phauxth to print out any logs, set the
log_level to false.
"""
def log(_, false, _, _), do: :ok
def log(level, log_level, path, %Phauxth.Log{user: user, message: message, meta: meta}) do
if Logger.compare_levels(level, log_level) != :lt do
Logger.log level, fn ->
Enum.map_join([{"path", path}, {"user", user}, {"message", message}] ++
meta, " ", &format/1)
end
end
:ok
end
@doc """
Returns the id of the currently logged-in user, if present.
"""
def current_user_id(%{current_user: %{id: id}}), do: "#{id}"
def current_user_id(_), do: "nil"
defp format({key, val}) when is_binary(val) do
if String.contains?(val, [" ", "="]) do
~s(#{key}="#{val}")
else
~s(#{key}=#{val})
end
end
defp format({key, val}), do: format({key, to_string(val)})
end