Packages

logger_streaming_backend

0.1.0
0.2.0-rc 0.1.0

A backend for the Elixir Logger that streams logs over HTTP, with per-stream log level and filtering based on metadata

HexDocs

Current section

Files

Jump to
Readme
2 Versions
2 Dependencies
Dependants
Files
Activity
logger_streaming_backend lib logger_streaming_backend html.ex
Raw

lib/logger_streaming_backend/html.ex 

defmodule LoggerStreamingBackend.Html do

  use Eml

  use Eml.Language.HTML



  precompile log_template do

    p [class: :level] do

      span [class: "time"], :timestamp

      span [class: "level"], :level

      span [class: "metadata"], :metadata

      br []

      span [class: "message colorlevel"], :message

    end

  end



  @spec format(atom(), String.t, {tuple(), tuple()}, Keyword.t) :: String.t

  def format(level, message, {_date, time}, metadata) do

    bound_template = log_template(

      message: message,

      level: Atom.to_string(level),

      timestamp: Logger.Utils.format_time(time) |> :erlang.list_to_binary,

      metadata: Logger.Formatter.format([:metadata], nil, nil, nil, metadata) |> :erlang.list_to_binary

    )

    Eml.render(bound_template)

  end



  def header do

    # Can't use eml for this as need to open html and body tags without closing them

    """

    <html>

      <head>

        <style>

        p { font-family: sans-serif; margin-bottom: 1em; }

        span { margin-right: 0.5em }

        .error > .colorlevel { color: red; }

        .warn  > .colorlevel { color: darkorange; }

        .info  > .colorlevel { color: black; }

        .debug > .colorlevel { color: darkcyan; }

        .time { font-style: italic; font-size: 85%; }

        .level { font-size: 85%; }

        .metadata { font-style: italic; font-size: 85%; }

        </style>

      </head>

      <body>

    """

  end



  def footer do

    "</body></html>"

  end

end