/
code_reloader.ex
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/
code_reloader.ex
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defmodule Phoenix.CodeReloader do
@moduledoc """
A plug and module to handle automatic code reloading.
For each request, Phoenix goes through all modules and checks if any of
them implement a `__phoenix_recompile__?/0` function. If they do and
it returns true, the module source file is touched, forcing it to be
recompiled. For this functionality to work, Phoenix requires you to add
the `:phoenix` compiler to your list of compilers:
compilers: [:phoenix] ++ Mix.compilers()
This is useful, for example, to recompile modules that depend on external
systems, such as directories, databases, etc. Note if you simply depend on
external files, `@external_resource` annotation should be used.
To avoid race conditions, all code reloads are funneled through a
sequential call operation.
"""
## Server delegation
@doc """
Reloads code for the current Mix project by invoking the
`:reloadable_compilers` on the list of `:reloadable_apps`.
This is configured in your application environment like:
config :your_app, YourApp.Endpoint,
reloadable_compilers: [:gettext, :phoenix, :elixir],
reloadable_apps: [:ui, :backend]
Keep in mind `:reloadable_compilers` must be a subset of the
`:compilers` specified in `project/0` in your `mix.exs`.
The `:reloadable_apps` defaults to `nil`. In such case
default behaviour is to reload current project if it
consists of single app, or all applications within umbrella
project. You can set `:reloadable_apps` to subset of default
applications to reload only some of them, empty list - to
effectively disable code reloader, or include external
applications from library dependencies.
"""
@spec reload!(module) :: :ok | {:error, binary()}
defdelegate reload!(endpoint), to: Phoenix.CodeReloader.Server
## Plug
@behaviour Plug
import Plug.Conn
@style %{
primary: "#EB532D",
accent: "#a0b0c0",
text_color: "#304050",
logo: 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",
monospace_font: "menlo, consolas, monospace"
}
@doc """
API used by Plug to start the code reloader.
"""
def init(opts), do: Keyword.put_new(opts, :reloader, &Phoenix.CodeReloader.reload!/1)
@doc """
API used by Plug to invoke the code reloader on every request.
"""
def call(conn, opts) do
case opts[:reloader].(conn.private.phoenix_endpoint) do
:ok ->
conn
{:error, output} ->
conn
|> put_resp_content_type("text/html")
|> send_resp(500, template(output))
|> halt()
end
end
defp template(output) do
{error, headline} = get_error_details(output)
"""
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CompileError</title>
<meta name="viewport" content="width=device-width">
<style>/*! normalize.css v4.2.0 | MIT License | github.com/necolas/normalize.css */html{font-family:sans-serif;line-height:1.15;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}body{margin:0}article,aside,details,figcaption,figure,footer,header,main,menu,nav,section,summary{display:block}audio,canvas,progress,video{display:inline-block}audio:not([controls]){display:none;height:0}progress{vertical-align:baseline}template,[hidden]{display:none}a{background-color:transparent;-webkit-text-decoration-skip:objects}a:active,a:hover{outline-width:0}abbr[title]{border-bottom:none;text-decoration:underline;text-decoration:underline dotted}b,strong{font-weight:inherit}b,strong{font-weight:bolder}dfn{font-style:italic}h1{font-size:2em;margin:0.67em 0}mark{background-color:#ff0;color:#000}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-0.25em}sup{top:-0.5em}img{border-style:none}svg:not(:root){overflow:hidden}code,kbd,pre,samp{font-family:monospace, monospace;font-size:1em}figure{margin:1em 40px}hr{box-sizing:content-box;height:0;overflow:visible}button,input,optgroup,select,textarea{font:inherit;margin:0}optgroup{font-weight:bold}button,input{overflow:visible}button,select{text-transform:none}button,html [type="button"],[type="reset"],[type="submit"]{-webkit-appearance:button}button::-moz-focus-inner,[type="button"]::-moz-focus-inner,[type="reset"]::-moz-focus-inner,[type="submit"]::-moz-focus-inner{border-style:none;padding:0}button:-moz-focusring,[type="button"]:-moz-focusring,[type="reset"]:-moz-focusring,[type="submit"]:-moz-focusring{outline:1px dotted ButtonText}fieldset{border:1px solid #c0c0c0;margin:0 2px;padding:0.35em 0.625em 0.75em}legend{box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}textarea{overflow:auto}[type="checkbox"],[type="radio"]{box-sizing:border-box;padding:0}[type="number"]::-webkit-inner-spin-button,[type="number"]::-webkit-outer-spin-button{height:auto}[type="search"]{-webkit-appearance:textfield;outline-offset:-2px}[type="search"]::-webkit-search-cancel-button,[type="search"]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-input-placeholder{color:inherit;opacity:0.54}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}</style>
<style>
html, body, td, input {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
}
* {
box-sizing: border-box;
}
html {
font-size: 15px;
line-height: 1.6;
background: #fff;
color: #{@style.text_color};
}
@media (max-width: 768px) {
html {
font-size: 14px;
}
}
@media (max-width: 480px) {
html {
font-size: 13px;
}
}
button:focus,
summary:focus {
outline: 0;
}
summary {
cursor: pointer;
}
pre {
font-family: #{@style.monospace_font};
max-width: 100%;
}
.heading-block {
background: #f9f9fa;
}
.heading-block,
.output-block {
padding: 48px;
}
@media (max-width: 768px) {
.heading-block,
.output-block {
padding: 32px;
}
}
@media (max-width: 480px) {
.heading-block,
.output-block {
padding: 16px;
}
}
/*
* Exception logo
*/
.exception-logo {
position: absolute;
right: 48px;
top: 48px;
pointer-events: none;
width: 100%;
}
.exception-logo:before {
content: '';
display: block;
height: 64px;
width: 100%;
background-size: auto 100%;
background-image: url("#{@style.logo}");
background-position: right 0;
background-repeat: no-repeat;
margin-bottom: 16px;
}
@media (max-width: 768px) {
.exception-logo {
position: static;
}
.exception-logo:before {
height: 32px;
background-position: left 0;
}
}
@media (max-width: 480px) {
.exception-logo {
display: none;
}
}
/*
* Exception info
*/
/* Compensate for logo placement */
@media (min-width: 769px) {
.exception-info {
max-width: 90%;
}
}
.exception-info > .error,
.exception-info > .subtext,
.exception-info > .title {
margin: 0;
padding: 0;
}
.exception-info > .error {
font-size: 1em;
font-weight: 700;
color: #{@style.primary};
}
.exception-info > .subtext {
font-size: 1em;
font-weight: 400;
color: #{@style.accent};
}
.exception-info > .title {
font-size: #{:math.pow(1.2, 4)}em;
line-height: 1.4;
font-weight: 300;
color: #{@style.primary};
}
@media (max-width: 768px) {
.exception-info > .title {
font-size: #{:math.pow(1.15, 4)}em;
}
}
@media (max-width: 480px) {
.exception-info > .title {
font-size: #{:math.pow(1.1, 4)}em;
}
}
.code-block {
margin: 0;
font-size: .85em;
line-height: 1.6;
}
</style>
</head>
<body>
<div class="heading-block">
<aside class="exception-logo"></aside>
<header class="exception-info">
<h5 class="error">#{error}</h5>
<h1 class="title">#{headline}</h1>
<h5 class="subtext">Console output is shown below.</h5>
</header>
</div>
<div class="output-block">
<pre class="code code-block">#{format_output(output)}</pre>
</div>
</body>
</html>
"""
end
defp format_output(output) do
output
|> String.trim
|> Plug.HTML.html_escape
end
defp get_error_details(output) do
case Regex.run(~r/(?:\n|^)\*\* \(([^ ]+)\) (.*)(?:\n|$)/, output) do
[_, error, headline] -> {error, format_output(headline)}
_ -> {"CompileError", "Compilation error"}
end
end
end