bump number of empty snake urls from 4 to 10

<% alias BattleSnake.SnakeForm %>

<% initial_empty_snakes = 10 %>
<% n = max((initial_empty_snakes - length(@form.data.snakes)) - 1, 0) + 1 %>
<% snakes = List.duplicate(%SnakeForm{}, n)%>

<fieldset>

    <%= label :f, :width, "Board Width" %>
    <%= number_input @form, :width, required: true %>

    <%= label @form, :height %>
    <%= number_input @form, :height, required: true %>

    <%= label @form, :delay, "Turn delay (ms)" %>
    <%= number_input @form, :delay, required: true %>

    <%= label @form, :recv_timeout, "API timeout (ms)" %>
    <%= number_input @form, :recv_timeout, required: true %>

    <%= label @form, :max_food %>
    <%= number_input @form, :max_food, required: true %>

    <%= label @form, :game_mode %>
    <%= select @form, :game_mode, BattleSnake.GameForm.game_modes(), required: true %>

</fieldset>

<fieldset>

Snakes

        url
        delete

      <%= inputs_for @form, :snakes, [append: snakes], fn g -> %>

          <%= url_input g, :url,
              title: "Please enter a valid url (e.g. http://localhost:4000)",
              pattern: "https?://.+" %>
          <%= checkbox g, :delete %>

      <% end %>

</fieldset>

<% alias BattleSnake.SnakeForm %>

<% initial_empty_snakes = 4 %>
<% n = max((initial_empty_snakes - length(@form.data.snakes)) - 1, 0) + 1 %>
<% snakes = List.duplicate(%SnakeForm{}, n)%>

<fieldset>

    <%= label :f, :width, "Board Width" %>
    <%= number_input @form, :width, required: true %>

    <%= label @form, :height %>
    <%= number_input @form, :height, required: true %>

    <%= label @form, :delay, "Turn delay (ms)" %>
    <%= number_input @form, :delay, required: true %>

    <%= label @form, :recv_timeout, "API timeout (ms)" %>
    <%= number_input @form, :recv_timeout, required: true %>

    <%= label @form, :max_food %>
    <%= number_input @form, :max_food, required: true %>

    <%= label @form, :game_mode %>
    <%= select @form, :game_mode, BattleSnake.GameForm.game_modes(), required: true %>

</fieldset>

<fieldset>

Snakes

        url
        delete

      <%= inputs_for @form, :snakes, [append: snakes], fn g -> %>

          <%= url_input g, :url,
              title: "Please enter a valid url (e.g. http://localhost:4000)",
              pattern: "https?://.+" %>
          <%= checkbox g, :delete %>

      <% end %>

</fieldset>


ref: smaller changes in layout and navigation

<!DOCTYPE html>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <link rel="alternate" type="application/atom+xml" title="WWWTech / Articles" href="<%= article_url(@conn, :index) %>.atom">
    <link rel="alternate" type="application/atom+xml" title="WWWTech / Notes" href="<%= note_url(@conn, :index) %>.atom">
    <link rel="alternate" type="application/atom+xml" title="WWWTech / Pictures" href="<%= picture_url(@conn, :index) %>.atom">
    <link rel="alternate" type="application/atom+xml" title="WWWTech / What’s new? (Combined feed)" href="<%= page_url(@conn, :index) %>whatsnew.atom">

    <link rel="pgpkey" type="application/pgp-keys" href="/A99A9D73.asc">

    <link rel="apple-touch-icon" href="<%= static_path(@conn, "/images/christian-kruse.jpg") %>">
    <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">

    <link rel="author" href="<%= page_path(@conn, :index) %>humans.txt" type="text/plain">

    <link rel="webmention" href="<%= page_url(@conn, :index) %>webmentions">

    <meta name="description" content="<%= description(@conn, assigns) %>">
    <meta name="author" content="Christian Kruse">

    <title><%= page_title(@conn, assigns) %></title>

    <meta property="og:title" content="<%= page_title(@conn, assigns) %>">
    <meta property="og:type" content="website">
    <meta property="og:image" content="<%= static_path(@conn, "/images/christian-kruse.jpg") %>">

    <link rel="stylesheet" href="<%= static_path(@conn, "/css/app.css") %>">
    <link rel="stylesheet" href="<%= static_path(@conn, "/css/font.css") %>" media="none" onload="if(media!='all')media='all'">

<%= link "WWWTech", to: page_url(@conn, :index) %>

Free/Libre Open Source Software and Publications by <%= link "Christian Kruse", to: page_path(@conn, :about) %>

        <%= if get_flash(@conn, :info) do %>
<%= get_flash(@conn, :info) %>
<% end %>
        <%= if get_flash(@conn, :error) do %>
<%= get_flash(@conn, :error) %>
<% end %>

        <%= render @view_module, @view_template, assigns %>

<%= link "Home", to: page_path(@conn, :index) %>

<%= link "About Me", to: page_path(@conn, :about) %>

<%= link "Software", to: page_path(@conn, :software) %>

<%= link "Articles", to: article_path(@conn, :index) %>

<%= link "Notes", to: note_path(@conn, :index) %>

<%= link "Pictures", to: picture_path(@conn, :index) %>

<%= link "More", to: page_path(@conn, :more) %>

          <%= if logged_in?(@conn) do %>

<%= button "Logout", to: session_path(@conn, :delete), method: :delete %>

          <% end %>

<%= link "Legal Notice", to: page_path(@conn, :about), rel: "me" %>

<%= link "cjk@defunct.ch", to: "xmpp:cjk@defunct.ch", rel: "me" %> via Jabber

<%= link "cjk@defunct.ch", to: "mailto:cjk@defunct.ch", rel: "me" %> via Email

    <%= if Application.get_env(:wwwtech, :environment) == :dev do %>

    <% end %>

<!DOCTYPE html>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <link rel="alternate" type="application/atom+xml" title="WWWTech / Articles" href="<%= article_url(@conn, :index) %>.atom">
    <link rel="alternate" type="application/atom+xml" title="WWWTech / Notes" href="<%= note_url(@conn, :index) %>.atom">
    <link rel="alternate" type="application/atom+xml" title="WWWTech / Pictures" href="<%= picture_url(@conn, :index) %>.atom">
    <link rel="alternate" type="application/atom+xml" title="WWWTech / What’s new? (Combined feed)" href="<%= page_url(@conn, :index) %>whatsnew.atom">

    <link rel="pgpkey" type="application/pgp-keys" href="/A99A9D73.asc">

    <link rel="apple-touch-icon" href="<%= static_path(@conn, "/images/christian-kruse.jpg") %>">
    <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">

    <link rel="author" href="<%= page_path(@conn, :index) %>humans.txt" type="text/plain">

    <link rel="webmention" href="<%= page_url(@conn, :index) %>webmentions">

    <meta name="description" content="<%= description(@conn, assigns) %>">
    <meta name="author" content="Christian Kruse">

    <title><%= page_title(@conn, assigns) %></title>

    <meta property="og:title" content="<%= page_title(@conn, assigns) %>">
    <meta property="og:type" content="website">
    <meta property="og:image" content="<%= static_path(@conn, "/images/christian-kruse.jpg") %>">

    <link rel="stylesheet" href="<%= static_path(@conn, "/css/app.css") %>">
    <link rel="stylesheet" href="<%= static_path(@conn, "/css/font.css") %>" media="none" onload="if(media!='all')media='all'">

<%= link "WWWTech", to: page_url(@conn, :index) %>

Free/Libre Open Source Software by <%= link "Christian Kruse", to: page_path(@conn, :about) %>

        <%= if get_flash(@conn, :info) do %>
<%= get_flash(@conn, :info) %>
<% end %>
        <%= if get_flash(@conn, :error) do %>
<%= get_flash(@conn, :error) %>
<% end %>

        <%= render @view_module, @view_template, assigns %>

<%= link "Main", to: page_path(@conn, :index) %>

<%= link "Software", to: page_path(@conn, :software) %>

<%= link "Articles", to: article_path(@conn, :index) %>

<%= link "Notes", to: note_path(@conn, :index) %>

<%= link "Pictures", to: picture_path(@conn, :index) %>

<%= link "About Me", to: page_path(@conn, :about) %>

<%= link "More", to: page_path(@conn, :more) %>

          <%= if logged_in?(@conn) do %>

<%= button "Logout", to: session_path(@conn, :delete), method: :delete %>

          <% end %>

<%= link "Legal Notice", to: page_path(@conn, :about), rel: "me" %>

<%= link "cjk@defunct.ch", to: "xmpp:cjk@defunct.ch", rel: "me" %> via Jabber

<%= link "cjk@defunct.ch", to: "mailto:cjk@defunct.ch", rel: "me" %> via Email

    <%= if Application.get_env(:wwwtech, :environment) == :dev do %>

    <% end %>


Add footer.

Add footer.

<!DOCTYPE html>

XEE.JP

        <%= if logged_in?(@conn) do %>

              <%= current_user(@conn).name %>

トップページ

実験管理画面

<%= link "ログアウト", to: session_path(@conn, :delete) %>

        <% else %>

<%= link "新規登録", to: registration_path(@conn, :new) %>

<%= link "ログイン", to: session_path(@conn, :new) %>

        <% end %>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>Hello Phoenix!</title>
    <link rel="stylesheet" href="<%= static_path(@conn, "/css/app.css") %>">
    <link rel="stylesheet" href="<%= static_path(@conn, "/css/vendor.css") %>">

<%= get_flash(@conn, :info) %>

<%= get_flash(@conn, :error) %>

      <%= @inner %>

  Copyright (C) 2015-2016 Ryohei HAYASHI All Rights Reserved.


fix app not rendering

fix app not rendering

<!DOCTYPE html>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>Hello Phoenix!</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
    <link rel="shortcut icon" href="<%= static_path(@conn, "/js/favicon.ico") %>">
    <link rel="stylesheet" href="<%= static_path(@conn, "/js/app.css") %>">

Get Started

<%= get_flash(@conn, :info) %>

<%= get_flash(@conn, :error) %>

      <%= @inner %>


primary button test

primary button test

 Lista de Asistencia

 Lista de asistencia

    <%= if @current_user do %>
      Bienvenido a la aplicación de administración del alumnado de
      un curso nómada.
      Puedes empezar por:

<%= link "Batches", to: batch_path(@conn, :index) %>

<%= link "Venues", to: venue_path(@conn, :index) %>

<%= link "Senseis", to: sensei_path(@conn, :index) %>

<%= link "Cintas", to: belt_path(@conn, :index) %>

<%= link "Usuarios", to: user_path(@conn, :index) %>

    <%= else %>
      <%= render Boilerplate.SessionView, "new.html", conn: @conn %>
    <% end %>


Split on newlines option

Split on newlines option

    Regex
    <input name="regex" type="text" ng-model="regex"/>

    Subject
    <textarea name="subject" ng-model="subject"></textarea>

    Split on newlines?
    <input type="checkbox" name="split" ng-model="split">

    Submit

  <results data="results">

    Regex
    <input name="regex" type="text" ng-model="regex"/>

    Subject
    <textarea name="subject" ng-model="subject"></textarea>

    Submit

  <results data="results">


Routing helpers require the connection now

<!DOCTYPE html>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>OAuth2/Phoenix!</title>
    <link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
    <link rel="stylesheet" href="/css/phoenix.css">

          OAuth2/Phoenix

OAuth2/Phoenix Example Application!

        This is an application to show an example of how to wire up
        OAuth2 with
        Phoenix.

      <%= if @current_user do %>

Welcome, <%= @current_user["name"] %>!

        <img src="<%= @current_user["avatar_url"] %>" class="img-circle"/>
      <% else %>
        <a class="btn btn-primary btn-lg" href="<%= auth_path @conn, :index %>">

          Sign in with GitHub

      <% end %>

      <%= @inner %>

<!DOCTYPE html>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>OAuth2/Phoenix!</title>
    <link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
    <link rel="stylesheet" href="/css/phoenix.css">

          OAuth2/Phoenix

OAuth2/Phoenix Example Application!

        This is an application to show an example of how to wire up
        OAuth2 with
        Phoenix.

      <%= if @current_user do %>

Welcome, <%= @current_user["name"] %>!

        <img src="<%= @current_user["avatar_url"] %>" class="img-circle"/>
      <% else %>
        <a class="btn btn-primary btn-lg" href="<%= auth_path :index %>">

          Sign in with GitHub

      <% end %>

      <%= @inner %>


tiny changes to json-td

tiny changes to json-td

<a href="https://steemit.com/@<%= @post.author %>/<%= @post.permlink %>"><%= @post.title %>

Author: <a href="https://beyondboinc.net/authors/<%= @post.author %>/"><%= @post.author %>

Tags:
          <%= for tag <- @post.tags do %>
          <a class="ui  label" href="/tags/<%=tag%>">
            <%= format_tag(tag, @conn.assigns.lang) %>

          <% end %>

        <%= raw(@post.body) %>

		  Home
		  /

Author: <a href="https://beyondboinc.net/authors/<%= @post.author %>/"><%= @post.author %>

		  /

<a href="https://beyondboinc.net/authors/<%= @post.author %>/<%= @post.permlink %>/"><%= @post.permlink %>


remove the protocol for the mastodon link text, too

    <img src="<%= Routes.static_path(@conn, "/images/christian-kruse.jpg") %>" alt="" class="u-photo portrait">

<%= link "Christian Kruse", to: Routes.page_url(@conn, :about), class: "p-name u-url" %>

        My name is Christian Kruse. I work as a software developer and
        system administator at <%= link "Termitel GmbH", to: "https://termitel.de/" %>.
        I live in Germany in a small town called
        <%= link "Steinfurt", to: "https://en.wikipedia.org/wiki/Steinfurt" %>.

        I am passionate about software development,
        <%= link "GNU/Linux", to: "https://en.wikipedia.org/wiki/Linux" %>,
        <%= link "FLOSS", to: "https://en.wikipedia.org/wiki/Free_and_open-source_software" %>
        as well as <%= link "macOS", to: "https://en.wikipedia.org/wiki/macOS" %>.
        I am also a do-it-yourself apologetic: I did a lot of things in and
        around my house myself. I love the hacker culture. And last but not
        least I am a dog owner.

        This is my personal replacement for Twitter, Facebook and the other
        data silos. <%= link "My content is mine", to: "http://indiewebcamp.com/" %>
        — so if you are interested in my activity, just have a look at this
        page.

        All content on this site is available under
        CC BY-SA 3.0.

        <img src="<%= Routes.static_path(@conn, "/images/by-sa.svg") %>" width="88" height="31" alt="CC BY-SA" class="badge">
        <img src="<%= Routes.static_path(@conn, "/images/indiewebcamp-button.svg") %>" width="80" height="15" alt="IndieWebCamp" class="badge">
        <img src="<%= Routes.static_path(@conn, "/images/webmention-button.svg") %>" width="80" height="15" alt="WebMentions" class="badge">
        <img src="<%= Routes.static_path(@conn, "/images/microformats-button.svg") %>" width="80" height="15" alt="Microformats" class="badge">

Personal information

Address

Christian Kruse

Friedenau 35

48565 Steinfurt

Germany

Email

<%= link "cjk@defunct.ch", to: "mailto:cjk@defunct.ch", class: "u-email" %>

PGP

A99A9D73

BC5D 9F4E F7FB 4382 6056  E834 B8E0 F342 A99A 9D73

<%= link "wwwtech.de/A99A9D73.asc", to: "/A99A9D73.asc" %>

Please send me encrypted mails if possible (see my public key above). Every
    bit of encrypted traffic increases the encrypted background noise
    and thus makes it harder to distinguish between important and
    unimportant traffic.

Social media

I also take part in several social services:

<%= link "chaos.social/@cjk101010", to: "https://chaos.social/@cjk101010", rel: "me" %> on Mastodon

<%= link "@cjk101010", to: "https://twitter.com/cjk101010", rel: "me" %> on Twitter

<%= link "github.com/ckruse", to: "https://github.com/ckruse", rel: "me" %> on Github

<%= link "www.reddit.com/user/cjk101010/", to: "https://www.reddit.com/user/cjk101010/", rel: "me" %> on Reddit

<%= link "news.ycombinator.com/user?id=cjk101010", to: "https://news.ycombinator.com/user?id=cjk101010", rel: "me" %> on Hackernews

<%= link "keybase.io/ckruse", to: "https://keybase.io/ckruse", rel: "me" %> on Keybase.io

<%= link "stackoverflow.com/users/785998/ckruse", to: "http://stackoverflow.com/users/785998/ckruse", rel: "me" %> on StackOverflow

    <img src="<%= Routes.static_path(@conn, "/images/christian-kruse.jpg") %>" alt="" class="u-photo portrait">

<%= link "Christian Kruse", to: Routes.page_url(@conn, :about), class: "p-name u-url" %>

        My name is Christian Kruse. I work as a software developer and
        system administator at <%= link "Termitel GmbH", to: "https://termitel.de/" %>.
        I live in Germany in a small town called
        <%= link "Steinfurt", to: "https://en.wikipedia.org/wiki/Steinfurt" %>.

        I am passionate about software development,
        <%= link "GNU/Linux", to: "https://en.wikipedia.org/wiki/Linux" %>,
        <%= link "FLOSS", to: "https://en.wikipedia.org/wiki/Free_and_open-source_software" %>
        as well as <%= link "macOS", to: "https://en.wikipedia.org/wiki/macOS" %>.
        I am also a do-it-yourself apologetic: I did a lot of things in and
        around my house myself. I love the hacker culture. And last but not
        least I am a dog owner.

        This is my personal replacement for Twitter, Facebook and the other
        data silos. <%= link "My content is mine", to: "http://indiewebcamp.com/" %>
        — so if you are interested in my activity, just have a look at this
        page.

        All content on this site is available under
        CC BY-SA 3.0.

        <img src="<%= Routes.static_path(@conn, "/images/by-sa.svg") %>" width="88" height="31" alt="CC BY-SA" class="badge">
        <img src="<%= Routes.static_path(@conn, "/images/indiewebcamp-button.svg") %>" width="80" height="15" alt="IndieWebCamp" class="badge">
        <img src="<%= Routes.static_path(@conn, "/images/webmention-button.svg") %>" width="80" height="15" alt="WebMentions" class="badge">
        <img src="<%= Routes.static_path(@conn, "/images/microformats-button.svg") %>" width="80" height="15" alt="Microformats" class="badge">

Personal information

Address

Christian Kruse

Friedenau 35

48565 Steinfurt

Germany

Email

<%= link "cjk@defunct.ch", to: "mailto:cjk@defunct.ch", class: "u-email" %>

PGP

A99A9D73

BC5D 9F4E F7FB 4382 6056  E834 B8E0 F342 A99A 9D73

<%= link "wwwtech.de/A99A9D73.asc", to: "/A99A9D73.asc" %>

Please send me encrypted mails if possible (see my public key above). Every
    bit of encrypted traffic increases the encrypted background noise
    and thus makes it harder to distinguish between important and
    unimportant traffic.

Social media

I also take part in several social services:

<%= link "https://chaos.social/@cjk101010", to: "https://chaos.social/@cjk101010", rel: "me" %> on Mastodon

<%= link "@cjk101010", to: "https://twitter.com/cjk101010", rel: "me" %> on Twitter

<%= link "github.com/ckruse", to: "https://github.com/ckruse", rel: "me" %> on Github

<%= link "www.reddit.com/user/cjk101010/", to: "https://www.reddit.com/user/cjk101010/", rel: "me" %> on Reddit

<%= link "news.ycombinator.com/user?id=cjk101010", to: "https://news.ycombinator.com/user?id=cjk101010", rel: "me" %> on Hackernews

<%= link "keybase.io/ckruse", to: "https://keybase.io/ckruse", rel: "me" %> on Keybase.io

<%= link "stackoverflow.com/users/785998/ckruse", to: "http://stackoverflow.com/users/785998/ckruse", rel: "me" %> on StackOverflow


boot script: fix varname typo breaking code_paths

#!/bin/sh

set -e

# Set VERBOSE to enable verbose logging of the boot script
#VERBOSE=true
if [ ! -z $DEBUG_BOOT ]; then
    set -x
fi;

my_readlink_f() {
    TARGET_FILE="$1"
    cd $(dirname "$TARGET_FILE")
    TARGET_FILE=$(basename "$TARGET_FILE")

    # Iterate down a (possible) chain of symlinks
    while [ -L "$TARGET_FILE" ]
    do
        TARGET_FILE=$(readlink "$TARGET_FILE")
        cd $(dirname "$TARGET_FILE")
        TARGET_FILE=$(basename "$TARGET_FILE")
    done
    # Compute the canonicalized name by finding the physical path
    # for the directory we're in and appending the target file.
    PHYS_DIR=$(pwd -P)
    RESULT="$PHYS_DIR/$TARGET_FILE"
    echo "$RESULT"
}

# Path to this script
if uname | grep -q 'Darwin'; then
  # on OSX, best to install coreutils from homebrew or similar
  # to get greadlink
  if command -v greadlink >/dev/null 2>&1; then
    SCRIPT=$(greadlink -f "$0")
  else
    SCRIPT=$(my_readlink_f "$0" )
  fi
else
  SCRIPT=$(readlink -f "$0" )
fi

# Parent directory of this script
SCRIPT_DIR=$(dirname "${SCRIPT}")
# Root directory of all releases
RELEASE_ROOT_DIR=$(dirname $(dirname ${SCRIPT_DIR}))

# Disable flow control for run_erl
# Flow control can cause several problems. On Linux, if you
# accidentally hit Ctrl-S (instead of Ctrl-D to detach) and
# then some other key, the entire beam process will hang when
# attempting to write to stdout. On Solaris, the beam process
# will hang on writing if ScrollLock is on.
RUN_ERL_DISABLE_FLOWCNTRL="${RUN_ERL_DISABLE_FLOWCNTRL:-true}"
# Name of the release
REL_NAME="<%= release_name %>"
# Current version of the release
REL_VSN="<%= release_version %>"
# Current version of ERTS being used
# If this is not present/unset, it will be detected
<%= unless is_nil(erts_vsn) do %>ERTS_VSN="<%= erts_vsn %>"<% end %>
# VM code loading mode, embedded by default, can also be interactive
# See http://erlang.org/doc/man/code.html
CODE_LOADING_MODE="${CODE_LOADING_MODE:-embedded}"
# Path to start_erl.data
START_ERL_DATA="$RELEASE_ROOT_DIR/releases/start_erl.data"
# Directory containing the current version of this release
REL_DIR="$RELEASE_ROOT_DIR/releases/$REL_VSN"
# The lib directory for this release
REL_LIB_DIR="$RELEASE_ROOT_DIR/lib"
# Options passed to erl
ERL_OPTS="<%= release.profile.erl_opts %>"
# When stdout is piped to a file, this is the directory those files will
# be stored in. defaults to /log in the release root directory

# RELEASE_MUTABLE_DIR
RELEASE_MUTABLE_DIR="${RELEASE_MUTABLE_DIR:-$RELEASE_ROOT_DIR/var}"

RUNNER_LOG_DIR="${RUNNER_LOG_DIR:-$RELEASE_MUTABLE_DIR/log}"
# A string of extra options to pass to erl, here for plugins
EXTRA_OPTS=""

# Pre-start/stop event hook paths
PRE_START_HOOKS="$REL_DIR/hooks/pre_start.d"
POST_START_HOOKS="$REL_DIR/hooks/post_start.d"
PRE_STOP_HOOKS="$REL_DIR/hooks/pre_stop.d"
POST_STOP_HOOKS="$REL_DIR/hooks/post_stop.d"
PRE_UPGRADE_HOOKS="$REL_DIR/hooks/pre_upgrade.d"
POST_UPGRADE_HOOKS="$REL_DIR/hooks/post_upgrade.d"

# Get node pid
get_pid() {
    if output="$(nodetool rpcterms os getpid)"
    then
        echo "$output" | sed -e 's/"//g'
        return 0
    else
        echo "$output"
        return 1
    fi
}

# Generate a unique nodename
gen_nodename() {
    id="longname$(gen_id)-${NAME}"
    "$BINDIR/erl" -boot start_clean -eval '[Host] = tl(string:tokens(atom_to_list(node()),"@")), io:format("~s~n", [Host]), halt()' -noshell ${NAME_TYPE} $id
}

# Generate a random id
gen_id() {
    od -t x -N 4 /dev/urandom | head -n1 | awk '{print $2}'
}

# Control a node
# Use like `nodetool "ping"`
nodetool() {
    command="$1"; shift

    "$ERTS_DIR/bin/escript" "$ROOTDIR/bin/nodetool" "$NAME_TYPE" "$NAME" \
                            -setcookie "$COOKIE" "$command" $@
}

# Run an escript in the node's environment
# Use like `escript "path/to/escript"`
escript() {
    shift; scriptpath="$1"; shift
    export RELEASE_ROOT_DIR

    "$ERTS_DIR/bin/escript" "$ROOTDIR/$scriptpath" $@
}

# Private. Load target cookie, either from vm.args or $HOME/.cookie
_load_cookie() {
    COOKIE_ARG="$(grep '^-setcookie' "$VMARGS_PATH" || true)"
    DEFAULT_COOKIE_FILE="$HOME/.erlang.cookie"
    if [ -z "$COOKIE_ARG" ]; then
        if [ -f "$DEFAULT_COOKIE_FILE" ]; then
            COOKIE="$(cat "$DEFAULT_COOKIE_FILE")"
        fi
    else
        # Extract cookie name from COOKIE_ARG
        COOKIE="$(echo "$COOKIE_ARG" | awk '{print $2}')"
    fi
}

# Private. Ensure that cookie is set.
_check_cookie() {
    # Attempt reloading cookie in case it has been set in a hook
    if [ -z "$COOKIE" ]; then
        _load_cookie
    fi
    # Die if cookie is still not set, as connecting via distribution will fail
    if [ -z "$COOKIE" ]; then
        printf "a secret cookie must be provided in one of the following ways:\n  - with vm.args using the -setcookie parameter,\n  or\n  by writing the cookie to '$DEFAULT_COOKIE_FILE', with permissions set to 0400"
        exit 1
    fi
}

# Private. For determining the version of ERTS available to the release
_detect_erts_vsn() {
    "$BINDIR/erl" -boot start_clean -eval 'Ver = erlang:system_info(version), io:format("~s~n", [Ver]), halt()' -noshell
}

# Private. Gets a list of code paths for this release
_get_code_paths() {
    "$ERTS_DIR/bin/escript" "$ROOTDIR/bin/release_utils.escript" "get_code_paths" "$ROOTDIR" "$ERTS_DIR" "$REL_NAME" "$REL_VSN"
}

# Private. For setting ERTS_DIR and ROOTDIR
_find_erts_dir() {
    __erts_dir="$RELEASE_ROOT_DIR/erts-$ERTS_VSN"
    if [ -d "$__erts_dir" ]; then
        ERTS_DIR="$__erts_dir";
        ROOTDIR="$RELEASE_ROOT_DIR"
    else
        set +e # temporarily disable so we can display a nice error message to the user
        __erl="$(which erl)"
        set -e
        if [ -z "${__erl}"  ]; then
          echo 'erlang runtime not found. If erlang is installed check your $PATH. aborting.'
          exit 1
        fi
        code="io:format(\"~s\", [code:root_dir()]), halt()."
        __erl_root="$("$__erl" -noshell -eval "$code")"
        ERTS_DIR="$__erl_root/erts-$ERTS_VSN"
        ROOTDIR="$__erl_root"
    fi
}

# Private. Open a shell on a remote node
_rem_sh() {
    # Generate a unique id used to allow multiple remsh to the same node
    # transparently
    id="remsh$(gen_id)-${NAME}"

    # Get the node's ticktime so that we use the same thing.
    TICKTIME="$(nodetool rpcterms net_kernel get_net_ticktime)"

    # Setup remote shell command to control node
    if [ ! -z "$USE_ERL_SHELL" ]; then
        exec "$BINDIR/erl" \
            -hidden \
            -boot start_clean -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -kernel net_ticktime $TICKTIME \
            "$NAME_TYPE" "$id" -remsh "$NAME" -setcookie "$COOKIE"
    else
        __code_paths=$(_get_code_paths)
        exec "$BINDIR/erl" \
            -pa "$CONSOLIDATED_DIR" \
            ${__code_paths} \
            -hidden -noshell \
            -boot start_clean -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -kernel net_ticktime $TICKTIME \
            -user Elixir.IEx.CLI "$NAME_TYPE" "$id" -setcookie "$COOKIE" \
            -extra --no-halt +iex -"$NAME_TYPE" "$id" --cookie "$COOKIE" --remsh "$NAME"
    fi
}

# Output a start command for the last argument of run_erl
_start_command() {
    printf "exec \"%s\" \"%s\" -- %s %s" "$RELEASE_ROOT_DIR/bin/$REL_NAME" \
           "$START_OPTION" "${ARGS}" "${EXTRA_OPTS}"
}

# Do a textual replacement of ${VAR} occurances in $1 and pipe to $2
_replace_os_vars() {
    awk '
        function escape(s) {
            gsub(/'\&'/, "\\\\&", s);
            return s;
        }
        {
            while(match($0,"[$]{[^}]*}")) {
                var=substr($0,RSTART+2,RLENGTH-3);
                gsub("[$]{"var"}", escape(ENVIRON[var]))
            }
        }1' < "$1" > "$1.bak"
    mv -- "$1.bak" "$1"
}

# Private. Run hooks from directory.
_run_hooks_from_dir() {
   if [ -d "$1" ]; then
      for file in $1/[0-9a-zA-Z]*.sh; do
        [ -f "$file" ] || continue
        . "$file"
      done
   fi
}

# If TERM is not set, set it to xterm
if [ -z "$TERM" ]; then
    export TERM=xterm
fi

# If ERTS_VSN is not set, detect it
if [ -z "$ERTS_VSN" ]; then
    ERTS_VSN="$(_detect_erts_vsn)"
    echo "$ERTS_VSN $REL_VSN" > "$START_ERL_DATA"
fi

# Allow override of where to read configuration from
# By default it's RELEASE_ROOT_DIR
if [ -z "$RELEASE_CONFIG_DIR" ]; then
    RELEASE_CONFIG_DIR="$RELEASE_ROOT_DIR"
fi

# Make sure directories exist
mkdir -p "$RELEASE_MUTABLE_DIR"
echo "Files in this directory are regenerated frequently, edits will be lost" \
    > "$RELEASE_MUTABLE_DIR/WARNING_README"
mkdir -p "$RUNNER_LOG_DIR"

# Set VMARGS_PATH, the path to the vm.args file to use
# Use $RELEASE_CONFIG_DIR/vm.args if exists, otherwise releases/VSN/vm.args
if [ -z "$VMARGS_PATH" ]; then
    if [ -f "$RELEASE_CONFIG_DIR/vm.args" ]; then
        VMARGS_PATH="$RELEASE_CONFIG_DIR/vm.args"
    else
        VMARGS_PATH="$REL_DIR/vm.args"
    fi
fi
if [ "$VMARGS_PATH" != "$RELEASE_MUTABLE_DIR/vm.args" ]; then
    echo "#### Generated - edit/create $RELEASE_CONFIG_DIR/vm.args instead." \
        >  "$RELEASE_MUTABLE_DIR/vm.args"
    cat  "$VMARGS_PATH"                              \
        >> "$RELEASE_MUTABLE_DIR/vm.args"
    VMARGS_PATH=$RELEASE_MUTABLE_DIR/vm.args
fi
if [ $REPLACE_OS_VARS ]; then
    _replace_os_vars "$VMARGS_PATH"
fi

# Set SYS_CONFIG_PATH, the path to the sys.config file to use
# Use $RELEASE_CONFIG_DIR/sys.config if exists, otherwise releases/VSN/sys.config
if [ -z "$SYS_CONFIG_PATH" ]; then
    if [ -f "$RELEASE_CONFIG_DIR/sys.config" ]; then
        SYS_CONFIG_PATH="$RELEASE_CONFIG_DIR/sys.config"
    else
        SYS_CONFIG_PATH="$REL_DIR/sys.config"
    fi
fi
if [ "$SYS_CONFIG_PATH" != "$RELEASE_MUTABLE_DIR/sys.config" ]; then
    echo "%% Generated - edit/create $RELEASE_CONFIG_DIR/sys.config instead." \
        >  "$RELEASE_MUTABLE_DIR/sys.config"
    cat  "$SYS_CONFIG_PATH"                              \
        >> "$RELEASE_MUTABLE_DIR/sys.config"
    SYS_CONFIG_PATH=$RELEASE_MUTABLE_DIR/sys.config
fi
if [ $REPLACE_OS_VARS ]; then
    _replace_os_vars "$SYS_CONFIG_PATH"
fi

# Extract the target node name from node.args
# Should be `-sname somename` or `-name somename@somehost`
NAME_ARG=$(egrep '^-s?name' "$VMARGS_PATH" || true)
if [ -z "$NAME_ARG" ]; then
    echo "vm.args needs to have either -name or -sname parameter."
    exit 1
fi

# Extract the name type and name from the NAME_ARG for REMSH
# NAME_TYPE should be -name or -sname
NAME_TYPE="$(echo "$NAME_ARG" | awk '{print $1}')"
# NAME will be either `somename` or `somename@somehost`
NAME="$(echo "$NAME_ARG" | awk '{print $2}')"

# Where the pipe will be stored when using `start`
# This is used so you can attach the running application to the current
# shell using `attach`
PIPE_DIR="${PIPE_DIR:-$RELEASE_MUTABLE_DIR/erl_pipes/$NAME/}"

# Extract the target cookie
_load_cookie

_find_erts_dir
export ROOTDIR="$RELEASE_ROOT_DIR"
export BINDIR="$ERTS_DIR/bin"
export EMU="beam"
export PROGNAME="erl"
export LD_LIBRARY_PATH="$ERTS_DIR/lib:$LD_LIBRARY_PATH"
ERTS_LIB_DIR="$ERTS_DIR/../lib"
CONSOLIDATED_DIR="$ROOTDIR/lib/${REL_NAME}-${REL_VSN}/consolidated"

cd "$ROOTDIR"

# User can specify an sname without @hostname
# This will fail when creating remote shell
# So here we check for @ and add @hostname if missing
case $NAME in
    *@*)
        # Nothing to do
        ;;
    *)
        NAME=$NAME@$(gen_nodename)
        ;;
esac

# Check the first argument for instructions
case "$1" in
    start|start_boot)

        # Make sure there is not already a node running
        #RES=`$NODETOOL ping`
        #if [ "$RES" = "pong" ]; then
        #    echo "Node is already running!"
        #    exit 1
        #fi
        # Save this for later.
        CMD=$1
        case "$1" in
            start)
                shift
                START_OPTION="console"
                HEART_OPTION="start"
                ;;
            start_boot)
                shift
                START_OPTION="console_boot"
                HEART_OPTION="start_boot"
                ;;
        esac
        ARGS="$@"
        RUN_PARAM="$@"

        _check_cookie
        _run_hooks_from_dir "$PRE_START_HOOKS"

        # Set arguments for the heart command
        set -- "$SCRIPT_DIR/$REL_NAME" "$HEART_OPTION"
        [ "$RUN_PARAM" ] && set -- "$@" "$RUN_PARAM"

        # Export the HEART_COMMAND
        HEART_COMMAND="$RELEASE_ROOT_DIR/bin/$REL_NAME $CMD"
        export HEART_COMMAND

        mkdir -p "$PIPE_DIR"

        "$BINDIR/run_erl" -daemon "$PIPE_DIR" "$RUNNER_LOG_DIR" \
                          "$(_start_command)"

        _run_hooks_from_dir "$POST_START_HOOKS"
        ;;

    stop)
        _check_cookie
        _run_hooks_from_dir "$PRE_STOP_HOOKS"
        # Wait for the node to completely stop...
        PID="$(get_pid)"
        if ! nodetool "stop"; then
            exit 1
        fi
        while $(kill -s 0 "$PID" 2>/dev/null);
        do
            sleep 1
        done
        _run_hooks_from_dir "$POST_STOP_HOOKS"
        ;;

    restart)
        _check_cookie
        _run_hooks_from_dir "$PRE_START_HOOKS"
        ## Restart the VM without exiting the process
        if ! nodetool "restart"; then
            exit 1
        fi
        ;;

    reboot)
        _check_cookie
        _run_hooks_from_dir "$PRE_START_HOOKS"
        ## Restart the VM completely (uses heart to restart it)
        if ! nodetool "reboot"; then
            exit 1
        fi
        ;;

    pid)
        ## Get the VM's pid
        _check_cookie
        if ! get_pid; then
            exit 1
        fi
        ;;

    ping)
        _check_cookie
        ## See if the VM is alive
        if ! nodetool "ping"; then
            exit 1
        fi
        ;;

    escript)
        _check_cookie
        ## Run an escript under the node's environment
        if ! escript $@; then
            exit 1
        fi
        ;;

    attach)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        exec "$BINDIR/to_erl" "$PIPE_DIR"
        ;;

    remote_console)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        _rem_sh
        ;;

    upgrade|downgrade|install)
        if [ -z "$2" ]; then
            echo "Missing package argument"
            echo "Usage: $REL_NAME $1 {package base name}"
            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
            exit 1
        fi

        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        SOURCE_VERSION="$REL_VSN"
        TARGET_VERSION="$2"

        "$BINDIR/escript" "$ROOTDIR/bin/release_utils.escript" \
             "unpack_release" "$REL_NAME" "$NAME_TYPE"  "$NAME" "$COOKIE" "$TARGET_VERSION"

        _run_hooks_from_dir "$PRE_UPGRADE_HOOKS"

        "$BINDIR/escript" "$ROOTDIR/bin/release_utils.escript" \
             "install_release" "$REL_NAME" "$NAME_TYPE"  "$NAME" "$COOKIE" "$TARGET_VERSION"

        _run_hooks_from_dir "$POST_UPGRADE_HOOKS"

        ;;
    unpack)
        if [ -z "$2" ]; then
            echo "Missing package argument"
            echo "Usage: $REL_NAME $1 {package base name}"
            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
            exit 1
        fi

        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        exec "$BINDIR/escript" "$ROOTDIR/bin/release_utils.escript" \
             "unpack_release" "$REL_NAME" "$NAME_TYPE" "$NAME" "$COOKIE" "$2"
        ;;

    console|console_clean|console_boot)
        # .boot file typically just $REL_NAME (ie, the app name)
        # however, for debugging, sometimes start_clean.boot is useful.
        # For e.g. 'setup', one may even want to name another boot script.
        case "$1" in
            console)
                if [ -f "$REL_DIR/$REL_NAME.boot" ]; then
                  BOOTFILE="$REL_DIR/$REL_NAME"
                else
                  BOOTFILE="$REL_DIR/start"
                fi
                ;;
            console_clean)
                BOOTFILE="$ROOTDIR/bin/start_clean"
                __code_paths=$(_get_code_paths)
                EXTRA_CODE_PATHS=${__code_paths}
                ;;
            console_boot)
                shift
                BOOTFILE="$1"
                shift
                ;;
        esac
        # Setup beam-required vars
        EMU="beam"
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        _check_cookie

        # Start the VM, executing pre_start hook along
        # the way. We can't run the post_start hook because
        # the console will crash with no TTY attached
        _run_hooks_from_dir "$PRE_START_HOOKS"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" \
            -boot "$BOOTFILE" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -env ERL_LIBS "$REL_LIB_DIR" \
            -pa "$CONSOLIDATED_DIR" \
            ${EXTRA_CODE_PATHS} \
            -args_file "$VMARGS_PATH" \
            -config "$SYS_CONFIG_PATH" \
            -mode "$CODE_LOADING_MODE" \
            ${ERL_OPTS} \
            -user Elixir.IEx.CLI \
            -extra --no-halt +iex

        # Dump environment info for logging purposes
        if [ ! -z $VERBOSE ]; then
            echo "Exec: $@" -- ${1+$ARGS} ${EXTRA_OPTS}
            echo "Root: $ROOTDIR"

            # Log the startup
            echo "$RELEASE_ROOT_DIR"
        fi;

        logger -t "$REL_NAME[$$]" "Starting up"

        exec "$@" -- ${1+$ARGS} ${EXTRA_OPTS}
        ;;

    foreground)
        # start up the release in the foreground for use by runit
        # or other supervision services

        [ -f "$REL_DIR/$REL_NAME.boot" ] && BOOTFILE="$REL_NAME" || BOOTFILE=start
        FOREGROUNDOPTIONS="-noshell -noinput +Bd"

        # Setup beam-required vars
        EMU=beam
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        _check_cookie

        # Start the VM, executing pre and post start hooks
        _run_hooks_from_dir "$PRE_START_HOOKS"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" $FOREGROUNDOPTIONS \
            -boot "$REL_DIR/$BOOTFILE" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -env ERL_LIBS "$REL_LIB_DIR" \
            -pa "$CONSOLIDATED_DIR" \
            -args_file "$VMARGS_PATH" \
            -config "$SYS_CONFIG_PATH" \
            -mode "$CODE_LOADING_MODE" \
            ${ERL_OPTS} \
            -extra ${EXTRA_OPTS}

        # Dump environment info for logging purposes
        if [ ! -z $VERBOSE ]; then
            echo "Exec: $@" -- ${1+$ARGS}
            echo "Root: $ROOTDIR"
        fi;

        "$@" -- ${1+$ARGS} &
        __bg_pid=$!
        _run_hooks_from_dir "$POST_START_HOOKS"
        wait $__bg_pid
        ;;
    rpc)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        nodetool rpc $@
        ;;
    rpcterms)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        nodetool rpcterms $@
        ;;
    eval)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        nodetool "eval" $@
        ;;
    command)
        # Execute as command-line utility
        #
        # Like the escript command, this does not start the OTP application.
        # If your command depends on a running OTP application,
        # use
        #
        #     {:ok, _} = Application.ensure_all_started(:your_app)

        _check_cookie

        shift
        MODULE="$1"; shift
        FUNCTION="$1"; shift

        # Save extra arguments
        ARGS="$@"

        # Build arguments for erlexec
        __code_paths=$(_get_code_paths)
        set -- "$ERL_OPTS"
        [ "$SYS_CONFIG_PATH" ] && set -- "$@" -config "$SYS_CONFIG_PATH"
        set -- "$@" -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR"
        set -- "$@" -noshell
        set -- "$@" -boot start_clean
        set -- "$@" -pa "$CONSOLIDATED_DIR"
        set -- "$@" ${__code_paths}
        set -- "$@" -s "$MODULE" "$FUNCTION"

        $BINDIR/erlexec $@ -extra $ARGS
        exit "$?"
        ;;
    *)
        __command_path="$REL_DIR/commands/$1"
        if [ -f "$__command_path" ]; then
            _check_cookie
            . "$__command_path"
        else
            echo "Usage: $REL_NAME {start|start_boot <file>|foreground|stop|restart|reboot|pid|ping|console|console_clean|console_boot <file>|attach|remote_console|upgrade|downgrade|install|escript|rpc|rpcterms|eval|command <module> <function> <args>}"
            exit 1
        fi
        ;;
esac

exit 0

#!/bin/sh

set -e

# Set VERBOSE to enable verbose logging of the boot script
#VERBOSE=true
if [ ! -z $DEBUG_BOOT ]; then
    set -x
fi;

my_readlink_f() {
    TARGET_FILE="$1"
    cd $(dirname "$TARGET_FILE")
    TARGET_FILE=$(basename "$TARGET_FILE")

    # Iterate down a (possible) chain of symlinks
    while [ -L "$TARGET_FILE" ]
    do
        TARGET_FILE=$(readlink "$TARGET_FILE")
        cd $(dirname "$TARGET_FILE")
        TARGET_FILE=$(basename "$TARGET_FILE")
    done
    # Compute the canonicalized name by finding the physical path
    # for the directory we're in and appending the target file.
    PHYS_DIR=$(pwd -P)
    RESULT="$PHYS_DIR/$TARGET_FILE"
    echo "$RESULT"
}

# Path to this script
if uname | grep -q 'Darwin'; then
  # on OSX, best to install coreutils from homebrew or similar
  # to get greadlink
  if command -v greadlink >/dev/null 2>&1; then
    SCRIPT=$(greadlink -f "$0")
  else
    SCRIPT=$(my_readlink_f "$0" )
  fi
else
  SCRIPT=$(readlink -f "$0" )
fi

# Parent directory of this script
SCRIPT_DIR=$(dirname "${SCRIPT}")
# Root directory of all releases
RELEASE_ROOT_DIR=$(dirname $(dirname ${SCRIPT_DIR}))

# Disable flow control for run_erl
# Flow control can cause several problems. On Linux, if you
# accidentally hit Ctrl-S (instead of Ctrl-D to detach) and
# then some other key, the entire beam process will hang when
# attempting to write to stdout. On Solaris, the beam process
# will hang on writing if ScrollLock is on.
RUN_ERL_DISABLE_FLOWCNTRL="${RUN_ERL_DISABLE_FLOWCNTRL:-true}"
# Name of the release
REL_NAME="<%= release_name %>"
# Current version of the release
REL_VSN="<%= release_version %>"
# Current version of ERTS being used
# If this is not present/unset, it will be detected
<%= unless is_nil(erts_vsn) do %>ERTS_VSN="<%= erts_vsn %>"<% end %>
# VM code loading mode, embedded by default, can also be interactive
# See http://erlang.org/doc/man/code.html
CODE_LOADING_MODE="${CODE_LOADING_MODE:-embedded}"
# Path to start_erl.data
START_ERL_DATA="$RELEASE_ROOT_DIR/releases/start_erl.data"
# Directory containing the current version of this release
REL_DIR="$RELEASE_ROOT_DIR/releases/$REL_VSN"
# The lib directory for this release
REL_LIB_DIR="$RELEASE_ROOT_DIR/lib"
# Options passed to erl
ERL_OPTS="<%= release.profile.erl_opts %>"
# When stdout is piped to a file, this is the directory those files will
# be stored in. defaults to /log in the release root directory

# RELEASE_MUTABLE_DIR
RELEASE_MUTABLE_DIR="${RELEASE_MUTABLE_DIR:-$RELEASE_ROOT_DIR/var}"

RUNNER_LOG_DIR="${RUNNER_LOG_DIR:-$RELEASE_MUTABLE_DIR/log}"
# A string of extra options to pass to erl, here for plugins
EXTRA_OPTS=""

# Pre-start/stop event hook paths
PRE_START_HOOKS="$REL_DIR/hooks/pre_start.d"
POST_START_HOOKS="$REL_DIR/hooks/post_start.d"
PRE_STOP_HOOKS="$REL_DIR/hooks/pre_stop.d"
POST_STOP_HOOKS="$REL_DIR/hooks/post_stop.d"
PRE_UPGRADE_HOOKS="$REL_DIR/hooks/pre_upgrade.d"
POST_UPGRADE_HOOKS="$REL_DIR/hooks/post_upgrade.d"

# Get node pid
get_pid() {
    if output="$(nodetool rpcterms os getpid)"
    then
        echo "$output" | sed -e 's/"//g'
        return 0
    else
        echo "$output"
        return 1
    fi
}

# Generate a unique nodename
gen_nodename() {
    id="longname$(gen_id)-${NAME}"
    "$BINDIR/erl" -boot start_clean -eval '[Host] = tl(string:tokens(atom_to_list(node()),"@")), io:format("~s~n", [Host]), halt()' -noshell ${NAME_TYPE} $id
}

# Generate a random id
gen_id() {
    od -t x -N 4 /dev/urandom | head -n1 | awk '{print $2}'
}

# Control a node
# Use like `nodetool "ping"`
nodetool() {
    command="$1"; shift

    "$ERTS_DIR/bin/escript" "$ROOTDIR/bin/nodetool" "$NAME_TYPE" "$NAME" \
                            -setcookie "$COOKIE" "$command" $@
}

# Run an escript in the node's environment
# Use like `escript "path/to/escript"`
escript() {
    shift; scriptpath="$1"; shift
    export RELEASE_ROOT_DIR

    "$ERTS_DIR/bin/escript" "$ROOTDIR/$scriptpath" $@
}

# Private. Load target cookie, either from vm.args or $HOME/.cookie
_load_cookie() {
    COOKIE_ARG="$(grep '^-setcookie' "$VMARGS_PATH" || true)"
    DEFAULT_COOKIE_FILE="$HOME/.erlang.cookie"
    if [ -z "$COOKIE_ARG" ]; then
        if [ -f "$DEFAULT_COOKIE_FILE" ]; then
            COOKIE="$(cat "$DEFAULT_COOKIE_FILE")"
        fi
    else
        # Extract cookie name from COOKIE_ARG
        COOKIE="$(echo "$COOKIE_ARG" | awk '{print $2}')"
    fi
}

# Private. Ensure that cookie is set.
_check_cookie() {
    # Attempt reloading cookie in case it has been set in a hook
    if [ -z "$COOKIE" ]; then
        _load_cookie
    fi
    # Die if cookie is still not set, as connecting via distribution will fail
    if [ -z "$COOKIE" ]; then
        printf "a secret cookie must be provided in one of the following ways:\n  - with vm.args using the -setcookie parameter,\n  or\n  by writing the cookie to '$DEFAULT_COOKIE_FILE', with permissions set to 0400"
        exit 1
    fi
}

# Private. For determining the version of ERTS available to the release
_detect_erts_vsn() {
    "$BINDIR/erl" -boot start_clean -eval 'Ver = erlang:system_info(version), io:format("~s~n", [Ver]), halt()' -noshell
}

# Private. Gets a list of code paths for this release
_get_code_paths() {
    "$ERTS_DIR/bin/escript" "$ROOTDIR/bin/release_utils.escript" "get_code_paths" "$ROOTDIR" "$ERTS_DIR" "$REL_NAME" "$REL_VSN"
}

# Private. For setting ERTS_DIR and ROOTDIR
_find_erts_dir() {
    __erts_dir="$RELEASE_ROOT_DIR/erts-$ERTS_VSN"
    if [ -d "$__erts_dir" ]; then
        ERTS_DIR="$__erts_dir";
        ROOTDIR="$RELEASE_ROOT_DIR"
    else
        set +e # temporarily disable so we can display a nice error message to the user
        __erl="$(which erl)"
        set -e
        if [ -z "${__erl}"  ]; then
          echo 'erlang runtime not found. If erlang is installed check your $PATH. aborting.'
          exit 1
        fi
        code="io:format(\"~s\", [code:root_dir()]), halt()."
        __erl_root="$("$__erl" -noshell -eval "$code")"
        ERTS_DIR="$__erl_root/erts-$ERTS_VSN"
        ROOTDIR="$__erl_root"
    fi
}

# Private. Open a shell on a remote node
_rem_sh() {
    # Generate a unique id used to allow multiple remsh to the same node
    # transparently
    id="remsh$(gen_id)-${NAME}"

    # Get the node's ticktime so that we use the same thing.
    TICKTIME="$(nodetool rpcterms net_kernel get_net_ticktime)"

    # Setup remote shell command to control node
    if [ ! -z "$USE_ERL_SHELL" ]; then
        exec "$BINDIR/erl" \
            -hidden \
            -boot start_clean -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -kernel net_ticktime $TICKTIME \
            "$NAME_TYPE" "$id" -remsh "$NAME" -setcookie "$COOKIE"
    else
        __code_paths=$(_get_code_paths)
        exec "$BINDIR/erl" \
            -pa "$CONSOLIDATED_DIR" \
            ${__code_paths} \
            -hidden -noshell \
            -boot start_clean -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -kernel net_ticktime $TICKTIME \
            -user Elixir.IEx.CLI "$NAME_TYPE" "$id" -setcookie "$COOKIE" \
            -extra --no-halt +iex -"$NAME_TYPE" "$id" --cookie "$COOKIE" --remsh "$NAME"
    fi
}

# Output a start command for the last argument of run_erl
_start_command() {
    printf "exec \"%s\" \"%s\" -- %s %s" "$RELEASE_ROOT_DIR/bin/$REL_NAME" \
           "$START_OPTION" "${ARGS}" "${EXTRA_OPTS}"
}

# Do a textual replacement of ${VAR} occurances in $1 and pipe to $2
_replace_os_vars() {
    awk '
        function escape(s) {
            gsub(/'\&'/, "\\\\&", s);
            return s;
        }
        {
            while(match($0,"[$]{[^}]*}")) {
                var=substr($0,RSTART+2,RLENGTH-3);
                gsub("[$]{"var"}", escape(ENVIRON[var]))
            }
        }1' < "$1" > "$1.bak"
    mv -- "$1.bak" "$1"
}

# Private. Run hooks from directory.
_run_hooks_from_dir() {
   if [ -d "$1" ]; then
      for file in $1/[0-9a-zA-Z]*.sh; do
        [ -f "$file" ] || continue
        . "$file"
      done
   fi
}

# If TERM is not set, set it to xterm
if [ -z "$TERM" ]; then
    export TERM=xterm
fi

# If ERTS_VSN is not set, detect it
if [ -z "$ERTS_VSN" ]; then
    ERTS_VSN="$(_detect_erts_vsn)"
    echo "$ERTS_VSN $REL_VSN" > "$START_ERL_DATA"
fi

# Allow override of where to read configuration from
# By default it's RELEASE_ROOT_DIR
if [ -z "$RELEASE_CONFIG_DIR" ]; then
    RELEASE_CONFIG_DIR="$RELEASE_ROOT_DIR"
fi

# Make sure directories exist
mkdir -p "$RELEASE_MUTABLE_DIR"
echo "Files in this directory are regenerated frequently, edits will be lost" \
    > "$RELEASE_MUTABLE_DIR/WARNING_README"
mkdir -p "$RUNNER_LOG_DIR"

# Set VMARGS_PATH, the path to the vm.args file to use
# Use $RELEASE_CONFIG_DIR/vm.args if exists, otherwise releases/VSN/vm.args
if [ -z "$VMARGS_PATH" ]; then
    if [ -f "$RELEASE_CONFIG_DIR/vm.args" ]; then
        VMARGS_PATH="$RELEASE_CONFIG_DIR/vm.args"
    else
        VMARGS_PATH="$REL_DIR/vm.args"
    fi
fi
if [ "$VMARGS_PATH" != "$RELEASE_MUTABLE_DIR/vm.args" ]; then
    echo "#### Generated - edit/create $RELEASE_CONFIG_DIR/vm.args instead." \
        >  "$RELEASE_MUTABLE_DIR/vm.args"
    cat  "$VMARGS_PATH"                              \
        >> "$RELEASE_MUTABLE_DIR/vm.args"
    VMARGS_PATH=$RELEASE_MUTABLE_DIR/vm.args
fi
if [ $REPLACE_OS_VARS ]; then
    _replace_os_vars "$VMARGS_PATH"
fi

# Set SYS_CONFIG_PATH, the path to the sys.config file to use
# Use $RELEASE_CONFIG_DIR/sys.config if exists, otherwise releases/VSN/sys.config
if [ -z "$SYS_CONFIG_PATH" ]; then
    if [ -f "$RELEASE_CONFIG_DIR/sys.config" ]; then
        SYS_CONFIG_PATH="$RELEASE_CONFIG_DIR/sys.config"
    else
        SYS_CONFIG_PATH="$REL_DIR/sys.config"
    fi
fi
if [ "$SYS_CONFIG_PATH" != "$RELEASE_MUTABLE_DIR/sys.config" ]; then
    echo "%% Generated - edit/create $RELEASE_CONFIG_DIR/sys.config instead." \
        >  "$RELEASE_MUTABLE_DIR/sys.config"
    cat  "$SYS_CONFIG_PATH"                              \
        >> "$RELEASE_MUTABLE_DIR/sys.config"
    SYS_CONFIG_PATH=$RELEASE_MUTABLE_DIR/sys.config
fi
if [ $REPLACE_OS_VARS ]; then
    _replace_os_vars "$SYS_CONFIG_PATH"
fi

# Extract the target node name from node.args
# Should be `-sname somename` or `-name somename@somehost`
NAME_ARG=$(egrep '^-s?name' "$VMARGS_PATH" || true)
if [ -z "$NAME_ARG" ]; then
    echo "vm.args needs to have either -name or -sname parameter."
    exit 1
fi

# Extract the name type and name from the NAME_ARG for REMSH
# NAME_TYPE should be -name or -sname
NAME_TYPE="$(echo "$NAME_ARG" | awk '{print $1}')"
# NAME will be either `somename` or `somename@somehost`
NAME="$(echo "$NAME_ARG" | awk '{print $2}')"

# Where the pipe will be stored when using `start`
# This is used so you can attach the running application to the current
# shell using `attach`
PIPE_DIR="${PIPE_DIR:-$RELEASE_MUTABLE_DIR/erl_pipes/$NAME/}"

# Extract the target cookie
_load_cookie

_find_erts_dir
export ROOTDIR="$RELEASE_ROOT_DIR"
export BINDIR="$ERTS_DIR/bin"
export EMU="beam"
export PROGNAME="erl"
export LD_LIBRARY_PATH="$ERTS_DIR/lib:$LD_LIBRARY_PATH"
ERTS_LIB_DIR="$ERTS_DIR/../lib"
CONSOLIDATED_DIR="$ROOTDIR/lib/${REL_NAME}-${REL_VSN}/consolidated"

cd "$ROOTDIR"

# User can specify an sname without @hostname
# This will fail when creating remote shell
# So here we check for @ and add @hostname if missing
case $NAME in
    *@*)
        # Nothing to do
        ;;
    *)
        NAME=$NAME@$(gen_nodename)
        ;;
esac

# Check the first argument for instructions
case "$1" in
    start|start_boot)

        # Make sure there is not already a node running
        #RES=`$NODETOOL ping`
        #if [ "$RES" = "pong" ]; then
        #    echo "Node is already running!"
        #    exit 1
        #fi
        # Save this for later.
        CMD=$1
        case "$1" in
            start)
                shift
                START_OPTION="console"
                HEART_OPTION="start"
                ;;
            start_boot)
                shift
                START_OPTION="console_boot"
                HEART_OPTION="start_boot"
                ;;
        esac
        ARGS="$@"
        RUN_PARAM="$@"

        _check_cookie
        _run_hooks_from_dir "$PRE_START_HOOKS"

        # Set arguments for the heart command
        set -- "$SCRIPT_DIR/$REL_NAME" "$HEART_OPTION"
        [ "$RUN_PARAM" ] && set -- "$@" "$RUN_PARAM"

        # Export the HEART_COMMAND
        HEART_COMMAND="$RELEASE_ROOT_DIR/bin/$REL_NAME $CMD"
        export HEART_COMMAND

        mkdir -p "$PIPE_DIR"

        "$BINDIR/run_erl" -daemon "$PIPE_DIR" "$RUNNER_LOG_DIR" \
                          "$(_start_command)"

        _run_hooks_from_dir "$POST_START_HOOKS"
        ;;

    stop)
        _check_cookie
        _run_hooks_from_dir "$PRE_STOP_HOOKS"
        # Wait for the node to completely stop...
        PID="$(get_pid)"
        if ! nodetool "stop"; then
            exit 1
        fi
        while $(kill -s 0 "$PID" 2>/dev/null);
        do
            sleep 1
        done
        _run_hooks_from_dir "$POST_STOP_HOOKS"
        ;;

    restart)
        _check_cookie
        _run_hooks_from_dir "$PRE_START_HOOKS"
        ## Restart the VM without exiting the process
        if ! nodetool "restart"; then
            exit 1
        fi
        ;;

    reboot)
        _check_cookie
        _run_hooks_from_dir "$PRE_START_HOOKS"
        ## Restart the VM completely (uses heart to restart it)
        if ! nodetool "reboot"; then
            exit 1
        fi
        ;;

    pid)
        ## Get the VM's pid
        _check_cookie
        if ! get_pid; then
            exit 1
        fi
        ;;

    ping)
        _check_cookie
        ## See if the VM is alive
        if ! nodetool "ping"; then
            exit 1
        fi
        ;;

    escript)
        _check_cookie
        ## Run an escript under the node's environment
        if ! escript $@; then
            exit 1
        fi
        ;;

    attach)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        exec "$BINDIR/to_erl" "$PIPE_DIR"
        ;;

    remote_console)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        _rem_sh
        ;;

    upgrade|downgrade|install)
        if [ -z "$2" ]; then
            echo "Missing package argument"
            echo "Usage: $REL_NAME $1 {package base name}"
            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
            exit 1
        fi

        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        SOURCE_VERSION="$REL_VSN"
        TARGET_VERSION="$2"

        "$BINDIR/escript" "$ROOTDIR/bin/release_utils.escript" \
             "unpack_release" "$REL_NAME" "$NAME_TYPE"  "$NAME" "$COOKIE" "$TARGET_VERSION"

        _run_hooks_from_dir "$PRE_UPGRADE_HOOKS"

        "$BINDIR/escript" "$ROOTDIR/bin/release_utils.escript" \
             "install_release" "$REL_NAME" "$NAME_TYPE"  "$NAME" "$COOKIE" "$TARGET_VERSION"

        _run_hooks_from_dir "$POST_UPGRADE_HOOKS"

        ;;
    unpack)
        if [ -z "$2" ]; then
            echo "Missing package argument"
            echo "Usage: $REL_NAME $1 {package base name}"
            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
            exit 1
        fi

        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        exec "$BINDIR/escript" "$ROOTDIR/bin/release_utils.escript" \
             "unpack_release" "$REL_NAME" "$NAME_TYPE" "$NAME" "$COOKIE" "$2"
        ;;

    console|console_clean|console_boot)
        # .boot file typically just $REL_NAME (ie, the app name)
        # however, for debugging, sometimes start_clean.boot is useful.
        # For e.g. 'setup', one may even want to name another boot script.
        case "$1" in
            console)
                if [ -f "$REL_DIR/$REL_NAME.boot" ]; then
                  BOOTFILE="$REL_DIR/$REL_NAME"
                else
                  BOOTFILE="$REL_DIR/start"
                fi
                ;;
            console_clean)
                BOOTFILE="$ROOTDIR/bin/start_clean"
                __code_paths=$(_get_code_paths)
                EXTRA_CODE_PATHS=${_code_paths}
                ;;
            console_boot)
                shift
                BOOTFILE="$1"
                shift
                ;;
        esac
        # Setup beam-required vars
        EMU="beam"
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        _check_cookie

        # Start the VM, executing pre_start hook along
        # the way. We can't run the post_start hook because
        # the console will crash with no TTY attached
        _run_hooks_from_dir "$PRE_START_HOOKS"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" \
            -boot "$BOOTFILE" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -env ERL_LIBS "$REL_LIB_DIR" \
            -pa "$CONSOLIDATED_DIR" \
            ${EXTRA_CODE_PATHS} \
            -args_file "$VMARGS_PATH" \
            -config "$SYS_CONFIG_PATH" \
            -mode "$CODE_LOADING_MODE" \
            ${ERL_OPTS} \
            -user Elixir.IEx.CLI \
            -extra --no-halt +iex

        # Dump environment info for logging purposes
        if [ ! -z $VERBOSE ]; then
            echo "Exec: $@" -- ${1+$ARGS} ${EXTRA_OPTS}
            echo "Root: $ROOTDIR"

            # Log the startup
            echo "$RELEASE_ROOT_DIR"
        fi;

        logger -t "$REL_NAME[$$]" "Starting up"

        exec "$@" -- ${1+$ARGS} ${EXTRA_OPTS}
        ;;

    foreground)
        # start up the release in the foreground for use by runit
        # or other supervision services

        [ -f "$REL_DIR/$REL_NAME.boot" ] && BOOTFILE="$REL_NAME" || BOOTFILE=start
        FOREGROUNDOPTIONS="-noshell -noinput +Bd"

        # Setup beam-required vars
        EMU=beam
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        _check_cookie

        # Start the VM, executing pre and post start hooks
        _run_hooks_from_dir "$PRE_START_HOOKS"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" $FOREGROUNDOPTIONS \
            -boot "$REL_DIR/$BOOTFILE" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -env ERL_LIBS "$REL_LIB_DIR" \
            -pa "$CONSOLIDATED_DIR" \
            -args_file "$VMARGS_PATH" \
            -config "$SYS_CONFIG_PATH" \
            -mode "$CODE_LOADING_MODE" \
            ${ERL_OPTS} \
            -extra ${EXTRA_OPTS}

        # Dump environment info for logging purposes
        if [ ! -z $VERBOSE ]; then
            echo "Exec: $@" -- ${1+$ARGS}
            echo "Root: $ROOTDIR"
        fi;

        "$@" -- ${1+$ARGS} &
        __bg_pid=$!
        _run_hooks_from_dir "$POST_START_HOOKS"
        wait $__bg_pid
        ;;
    rpc)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        nodetool rpc $@
        ;;
    rpcterms)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        nodetool rpcterms $@
        ;;
    eval)
        _check_cookie

        # Make sure a node IS running
        if ! nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        nodetool "eval" $@
        ;;
    command)
        # Execute as command-line utility
        #
        # Like the escript command, this does not start the OTP application.
        # If your command depends on a running OTP application,
        # use
        #
        #     {:ok, _} = Application.ensure_all_started(:your_app)

        _check_cookie

        shift
        MODULE="$1"; shift
        FUNCTION="$1"; shift

        # Save extra arguments
        ARGS="$@"

        # Build arguments for erlexec
        __code_paths=$(_get_code_paths)
        set -- "$ERL_OPTS"
        [ "$SYS_CONFIG_PATH" ] && set -- "$@" -config "$SYS_CONFIG_PATH"
        set -- "$@" -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR"
        set -- "$@" -noshell
        set -- "$@" -boot start_clean
        set -- "$@" -pa "$CONSOLIDATED_DIR"
        set -- "$@" ${__code_paths}
        set -- "$@" -s "$MODULE" "$FUNCTION"

        $BINDIR/erlexec $@ -extra $ARGS
        exit "$?"
        ;;
    *)
        __command_path="$REL_DIR/commands/$1"
        if [ -f "$__command_path" ]; then
            _check_cookie
            . "$__command_path"
        else
            echo "Usage: $REL_NAME {start|start_boot <file>|foreground|stop|restart|reboot|pid|ping|console|console_clean|console_boot <file>|attach|remote_console|upgrade|downgrade|install|escript|rpc|rpcterms|eval|command <module> <function> <args>}"
            exit 1
        fi
        ;;
esac

exit 0


Fix typo in boot script

Fix typo in boot script

#!/bin/sh

set -e

SCRIPT=$(readlink $0 || true)
if [ -z $SCRIPT ]; then
    SCRIPT=$0
fi;
SCRIPT_DIR="$(cd `dirname "$SCRIPT"` && pwd -P)"
RELEASE_ROOT_DIR="$(cd "$SCRIPT_DIR/../.." && pwd -P)"
REL_NAME="<%= rel_name %>"
REL_VSN="<%= rel_vsn %>"
ERTS_VSN="<%= erts_vsn %>"
CODE_LOADING_MODE="${CODE_LOADING_MODE:-embedded}"
REL_DIR="$RELEASE_ROOT_DIR/releases/$REL_VSN"
REL_LIB_DIR="$RELEASE_ROOT_DIR/lib"
ERL_OPTS="<%= erl_opts %>"
RUNNER_LOG_DIR="${RUNNER_LOG_DIR:-$RELEASE_ROOT_DIR/log}"

# Pre-start/stop event hooks
PRE_START_HOOK="$REL_DIR/hooks/pre_start"
POST_START_HOOK="$REL_DIR/hooks/post_start"
PRE_STOP_HOOK="$REL_DIR/hooks/pre_stop"
POST_STOP_HOOK="$REL_DIR/hooks/post_stop"

run_async() {
    exec "$@" -- ${1+$ARGS}
}

find_erts_dir() {
    __erts_dir="$RELEASE_ROOT_DIR/erts-$ERTS_VSN"
    if [ -d "$__erts_dir" ]; then
        ERTS_DIR="$__erts_dir";
        ROOTDIR="$RELEASE_ROOT_DIR"
    else
        __erl="$(which erl)"
        code="io:format(\"~s\", [code:root_dir()]), halt()."
        __erl_root="$("$__erl" -noshell -eval "$code")"
        ERTS_DIR="$__erl_root/erts-$ERTS_VSN"
        ROOTDIR="$__erl_root"
    fi
}

# Get node pid
_get_pid() {
    if output="$(_nodetool rpcterms os getpid)"
    then
        echo "$output" | sed -e 's/"//g'
        return 0
    else
        echo "$output"
        return 1
    fi
}

_get_nodename() {
    id="longname$(_gen_id)-${NAME}"
    "$BINDIR/erl" -boot start_clean -eval '[Host] = tl(string:tokens(atom_to_list(node()),"@")), io:format("~s~n", [Host]), halt()' -noshell ${NAME_TYPE} $id
}

# Connect to a remote node
_rem_sh() {
    # Generate a unique id used to allow multiple remsh to the same node
    # transparently
    id="remsh$(_gen_id)-${NAME}"

    # Get the node's ticktime so that we use the same thing.
    TICKTIME="$(_nodetool rpcterms net_kernel get_net_ticktime)"

    # Setup remote shell command to control node
    #exec "$BINDIR/erl" "$NAME_TYPE" "$id" -remsh "$NAME" -boot start_clean \
    #    -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
    #    -setcookie "$COOKIE" -hidden -kernel net_ticktime $TICKTIME
    exec "$BINDIR/erl" \
         -pa "$ROOTDIR"/lib/*/ebin -pa "$CONSOLIDATED_DIR" \
         -hidden -noshell \
         -boot start_clean -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
         -kernel net_ticktime $TICKTIME \
         -user Elixir.IEx.CLI "$NAME_TYPE" "$id" -setcookie "$COOKIE" \
         -extra --no-halt +iex -"$NAME_TYPE" "$id" --cookie "$COOKIE" --remsh "$NAME"
}

# Generate a random id
_gen_id() {
    od -t x -N 4 /dev/urandom | head -n1 | awk '{print $2}'
}

# Control a node
_nodetool() {
    command="$1"; shift

    "$ERTS_DIR/bin/escript" "$ROOTDIR/bin/nodetool" "$NAME_TYPE" "$NAME" \
                                -setcookie "$COOKIE" "$command" $@
}

# Run an escript in the node's environment
_escript() {
    shift; scriptpath="$1"; shift
    export RELEASE_ROOT_DIR

    "$ERTS_DIR/bin/escript" "$ROOTDIR/$scriptpath" $@
}

# Output a start command for the last argument of run_erl
_start_command() {
    printf "exec \"%s\" \"%s\"" "$RELEASE_ROOT_DIR/bin/$REL_NAME" \
           "$START_OPTION"
}

# Use $CWD/vm.args if exists, otherwise releases/VSN/vm.args
if [ -z "$VMARGS_PATH" ]; then
    if [ -f "$RELEASE_ROOT_DIR/vm.args" ]; then
        VMARGS_PATH="$RELEASE_ROOT_DIR/vm.args"
    else
        VMARGS_PATH="$REL_DIR/vm.args"
    fi
fi

orig_vmargs_path="$VMARGS_PATH.orig"
if [ $REPLACE_OS_VARS ]; then
    #Make sure we don't break dev mode by keeping the symbolic link to
    #the user's vm.args
    if [ ! -L "$orig_vmargs_path" ]; then
       #we're in copy mode, rename the vm.args file to vm.args.orig
       mv "$VMARGS_PATH" "$orig_vmargs_path"
    fi

    awk '{while(match($0,"[$]{[^}]*}")) {var=substr($0,RSTART+2,RLENGTH -3);gsub("[$]{"var"}",ENVIRON[var])}}1' < "$orig_vmargs_path" > "$VMARGS_PATH"
 else
    #We don't need to replace env. vars, just rename the
    #symlink vm.args.orig to vm.args, and keep it as a
    #symlink.
    if [ -L "$orig_vmargs_path" ]; then
       mv "$orig_vmargs_path" "$VMARGS_PATH"
    fi
fi

# Make sure log directory exists
mkdir -p "$RUNNER_LOG_DIR"

# Use $CWD/sys.config if exists, otherwise releases/VSN/sys.config
if [ -z "$SYS_CONFIG_PATH" ]; then
    if [ -f "$RELEASE_ROOT_DIR/sys.config" ]; then
        SYS_CONFIG_PATH="$RELEASE_ROOT_DIR/sys.config"
    else
        SYS_CONFIG_PATH="$REL_DIR/sys.config"
    fi
fi

orig_sys_config_path="$SYS_CONFIG_PATH.orig"
if [ $REPLACE_OS_VARS ]; then
    #Make sure we don't break dev mode by keeping the symbolic link to
    #the user's sys.config
    if [ ! -L "$orig_sys_config_path" ]; then
       #We're in copy mode, rename sys.config to sys.config.orig
       mv "$SYS_CONFIG_PATH" "$orig_sys_config_path"
    fi

    awk '{while(match($0,"[$]{[^}]*}")) {var=substr($0,RSTART+2,RLENGTH -3);gsub("[$]{"var"}",ENVIRON[var])}}1' < "$orig_sys_config_path" > "$SYS_CONFIG_PATH"
 else
    #We don't need to replace env. vars, just rename the
    #symlink sys.config.orig to sys.config. Keep it as
    #a symlink.
    if [ -L "$orig_sys_config_path" ]; then
       mv "$orig_sys_config_path"  "$SYS_CONFIG_PATH"
    fi
fi

# Extract the target node name from node.args
NAME_ARG=$(egrep '^-s?name' "$VMARGS_PATH" || true)
if [ -z "$NAME_ARG" ]; then
    echo "vm.args needs to have either -name or -sname parameter."
    exit 1
fi

# Extract the name type and name from the NAME_ARG for REMSH
NAME_TYPE="$(echo "$NAME_ARG" | awk '{print $1}')"
NAME="$(echo "$NAME_ARG" | awk '{print $2}')"

PIPE_DIR="${PIPE_DIR:-/tmp/erl_pipes/$NAME/}"

# Extract the target cookie
COOKIE_ARG="$(grep '^-setcookie' "$VMARGS_PATH" || true)"
DEFAULT_COOKIE_FILE="$HOME/.erlang.cookie"
if [ -z "$COOKIE_ARG" ]; then
    if [ -f "$DEFAULT_COOKIE_FILE" ]; then
        COOKIE="$(cat "$DEFAULT_COOKIE_FILE")"
    else
        printf "a secret cookie must be provided in one of the following ways:\n  - with vm.args using the -setcookie parameter,\n  or\n  by writing the cookie to '$DEFAULT_COOKIE_FILE', with permissions set to 0400"
        exit 1
    fi
else
    # Extract cookie name from COOKIE_ARG
    COOKIE="$(echo "$COOKIE_ARG" | awk '{print $2}')"
fi

find_erts_dir
export ROOTDIR="$RELEASE_ROOT_DIR"
export BINDIR="$ERTS_DIR/bin"
export EMU="beam"
export PROGNAME="erl"
export LD_LIBRARY_PATH="$ERTS_DIR/lib:$LD_LIBRARY_PATH"
ERTS_LIB_DIR="$ERTS_DIR/../lib"
CONSOLIDATED_DIR="$ROOTDIR/lib/${REL_NAME}-${REL_VSN}/consolidated"

cd "$ROOTDIR"

# User can specify an sname without @hostname
# This will fail when creating remote shell
# So here we check for @ and add @hostname if missing
case $NAME in
    *@*)
        # Nothing to do
        ;;
    *)
        NAME=$NAME@$(_get_nodename)
        ;;
esac

# Check the first argument for instructions
case "$1" in
    start|start_boot)

        # Make sure there is not already a node running
        #RES=`$NODETOOL ping`
        #if [ "$RES" = "pong" ]; then
        #    echo "Node is already running!"
        #    exit 1
        #fi
        # Save this for later.
        CMD=$1
        case "$1" in
            start)
                shift
                START_OPTION="console"
                HEART_OPTION="start"
                ;;
            start_boot)
                shift
                START_OPTION="console_boot"
                HEART_OPTION="start_boot"
                ;;
        esac
        RUN_PARAM="$@"

        # Set arguments for the heart command
        set -- "$SCRIPT_DIR/$REL_NAME" "$HEART_OPTION"
        [ "$RUN_PARAM" ] && set -- "$@" "$RUN_PARAM"

        # Export the HEART_COMMAND
        HEART_COMMAND="$RELEASE_ROOT_DIR/bin/$REL_NAME $CMD"
        export HEART_COMMAND

        mkdir -p "$PIPE_DIR"

        [ -f "$PRE_START_HOOK" ] && . "$PRE_START_HOOK"

        "$BINDIR/run_erl" -daemon "$PIPE_DIR" "$RUNNER_LOG_DIR" \
                          "$(_start_command)"

        [ -f "$POST_START_HOOK" ] && . "$POST_START_HOOK"
        ;;

    stop)
        [ -f "$PRE_STOP_HOOK" ] && . "$PRE_STOP_HOOK"
        # Wait for the node to completely stop...
        PID="$(_get_pid)"
        if ! _nodetool "stop"; then
            exit 1
        fi
        while $(kill -s 0 "$PID" 2>/dev/null);
        do
            sleep 1
        done
        [ -f "$POST_STOP_HOOK" ] && . "$POST_STOP_HOOK"
        ;;

    restart)
        ## Restart the VM without exiting the process
        if ! _nodetool "restart"; then
            exit 1
        fi
        ;;

    reboot)
        ## Restart the VM completely (uses heart to restart it)
        if ! _nodetool "reboot"; then
            exit 1
        fi
        ;;

    pid)
        ## Get the VM's pid
        if ! _get_pid; then
            exit 1
        fi
        ;;

    ping)
        ## See if the VM is alive
        if ! _nodetool "ping"; then
            exit 1
        fi
        ;;

    escript)
        ## Run an escript under the node's environment
        if ! _escript $@; then
            exit 1
        fi
        ;;

    attach)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        exec "$BINDIR/to_erl" "$PIPE_DIR"
        ;;

    remote_console)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        _rem_sh
        ;;

    upgrade|downgrade|install)
        if [ -z "$2" ]; then
            echo "Missing package argument"
            echo "Usage: $REL_NAME $1 {package base name}"
            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
            exit 1
        fi

        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        exec "$BINDIR/escript" "$ROOTDIR/bin/install_upgrade.escript" \
             "install" "$REL_NAME" "$NAME_TYPE" "$NAME" "$COOKIE" "$2"
        ;;

    unpack)
        if [ -z "$2" ]; then
            echo "Missing package argument"
            echo "Usage: $REL_NAME $1 {package base name}"
            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
            exit 1
        fi

        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        exec "$BINDIR/escript" "$ROOTDIR/bin/install_upgrade.escript" \
             "unpack" "$REL_NAME" "$NAME_TYPE" "$NAME" "$COOKIE" "$2"
        ;;

    console|console_clean|console_boot)
        # .boot file typically just $REL_NAME (ie, the app name)
        # however, for debugging, sometimes start_clean.boot is useful.
        # For e.g. 'setup', one may even want to name another boot script.
        case "$1" in
            console)
                if [ -f "$REL_DIR/$REL_NAME.boot" ]; then
                  BOOTFILE="$REL_DIR/$REL_NAME"
                else
                  BOOTFILE="$REL_DIR/start"
                fi
                ;;
            console_clean)
                BOOTFILE="$ROOTDIR/bin/start_clean"
                ;;
            console_boot)
                shift
                BOOTFILE="$1"
                shift
                ;;
        esac
        # Setup beam-required vars
        EMU="beam"
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" \
            -boot "$BOOTFILE" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -env ERL_LIBS "$REL_LIB_DIR" \
            -pa "$CONSOLIDATED_DIR" \
            -args_file "$VMARGS_PATH" \
            -config "$SYS_CONFIG_PATH" \
            -mode "$CODE_LOADING_MODE" \
            ${ERL_OPTS} \
            -user Elixir.IEx.CLI -extra --no-halt +iex

        # Dump environment info for logging purposes
        echo "Exec: $@" -- ${1+$ARGS}
        echo "Root: $ROOTDIR"

        # Log the startup
        echo "$RELEASE_ROOT_DIR"
        logger -t "$REL_NAME[$$]" "Starting up"

        # Start the VM, executing pre_start hook along
        # the way. We can't run the post_start hook because
        # the console will crash with no TTY attached
        [ -f "$PRE_START_HOOK" ] && . "$PRE_START_HOOK"
        exec "$@" -- ${1+$ARGS}
        ;;

    foreground)
        # start up the release in the foreground for use by runit
        # or other supervision services

        [ -f "$REL_DIR/$REL_NAME.boot" ] && BOOTFILE="$REL_NAME" || BOOTFILE=start
        FOREGROUNDOPTIONS="-noshell -noinput +Bd"

        # Setup beam-required vars
        EMU=beam
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" $FOREGROUNDOPTIONS \
            -boot "$REL_DIR/$BOOTFILE" -mode "$CODE_LOADING_MODE" -config "$SYS_CONFIG_PATH" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -args_file "$VMARGS_PATH" \
            -env ERL_LIBS "$REL_LIB_DIR" \
            -pa "$CONSOLIDATED_DIR" \
            ${ERL_OPTS}

        # Dump environment info for logging purposes
        echo "Exec: $@" -- ${1+$ARGS}
        echo "Root: $ROOTDIR"

        # Start the VM, executing pre and post start hooks
        [ -f "$PRE_START_HOOK" ] && . "$PRE_START_HOOK"
        trap '{}' QUIT TERM KILL HUP SIGUSR1 SIGUSR2
        "$@" -- ${1+$ARGS} &
        __bg_pid=$!
        [ -f "$POST_START_HOOK" ] && . "$POST_START_HOOK"
        wait $__bg_pid
        ;;
    rpc)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        _nodetool rpc $@
        ;;
    rpcterms)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        _nodetool rpcterms $@
        ;;
    eval)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        _nodetool "eval" $@
        ;;
    *)
        echo "Usage: $REL_NAME {start|start_boot <file>|foreground|stop|restart|reboot|pid|ping|console|console_clean|console_boot <file>|attach|remote_console|upgrade|downgrade|install|escript|rpc|rpcterms|eval}"
        exit 1
        ;;
esac

exit 0

#!/bin/sh

set -e

SCRIPT=$(readlink $0 || true)
if [ -z $SCRIPT ]; then
    SCRIPT=$0
fi;
SCRIPT_DIR="$(cd `dirname "$SCRIPT"` && pwd -P)"
RELEASE_ROOT_DIR="$(cd "$SCRIPT_DIR/../.." && pwd -P)"
REL_NAME="<%= rel_name %>"
REL_VSN="<%= rel_vsn %>"
ERTS_VSN="<%= erts_vsn %>"
CODE_LOADING_MODE="${CODE_LOADING_MODE:-embedded}"
REL_DIR="$RELEASE_ROOT_DIR/releases/$REL_VSN"
REL_LIB_DIR="$RELEASE_ROOT_DIR/lib"
ERL_OPTS="<%= erl_opts %>"
RUNNER_LOG_DIR="${RUNNER_LOG_DIR:-$RELEASE_ROOT_DIR/log}"

# Pre-start/stop event hooks
PRE_START_HOOK="$REL_DIR/hooks/pre_start"
POST_START_HOOK="$REL_DIR/hooks/post_start"
PRE_STOP_HOOK="$REL_DIR/hooks/pre_stop"
POST_STOP_HOOK="$REL_DIR/hooks/post_stop"

run_async() {
    exec "$@" -- ${1+$ARGS}
}

find_erts_dir() {
    __erts_dir="$RELEASE_ROOT_DIR/erts-$ERTS_VSN"
    if [ -d "$__erts_dir" ]; then
        ERTS_DIR="$__erts_dir";
        ROOTDIR="$RELEASE_ROOT_DIR"
    else
        __erl="$(which erl)"
        code="io:format(\"~s\", [code:root_dir()]), halt()."
        __erl_root="$("$__erl" -noshell -eval "$code")"
        ERTS_DIR="$__erl_root/erts-$ERTS_VSN"
        ROOTDIR="$__erl_root"
    fi
}

# Get node pid
_get_pid() {
    if output="$(_nodetool rpcterms os getpid)"
    then
        echo "$output" | sed -e 's/"//g'
        return 0
    else
        echo "$output"
        return 1
    fi
}

_get_nodename() {
    id="longname$(_gen_id)-${NAME}"
    "$BINDIR/erl" -boot start_clean -eval '[Host] = tl(string:tokens(atom_to_list(node()),"@")), io:format("~s~n", [Host]), halt()' -noshell ${NAME_TYPE} $id
}

# Connect to a remote node
_rem_sh() {
    # Generate a unique id used to allow multiple remsh to the same node
    # transparently
    id="remsh$(_gen_id)-${NAME}"

    # Get the node's ticktime so that we use the same thing.
    TICKTIME="$(_nodetool rpcterms net_kernel get_net_ticktime)"

    # Setup remote shell command to control node
    #exec "$BINDIR/erl" "$NAME_TYPE" "$id" -remsh "$NAME" -boot start_clean \
    #    -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
    #    -setcookie "$COOKIE" -hidden -kernel net_ticktime $TICKTIME
    exec "$BINDIR/erl" \
         -pa "$ROOTDIR"/lib/*/ebin -pa "$CONSOLIDATED_DIR" \
         -hidden -noshell \
         -boot start_clean -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
         -kernel net_ticktime $TICKTIME \
         -user Elixir.IEx.CLI "$NAME_TYPE" "$id" -setookie "$COOKIE" \
         -extra --no-halt +iex -"$NAME_TYPE" "$id" --cookie "$COOKIE" --remsh "$NAME"
}

# Generate a random id
_gen_id() {
    od -t x -N 4 /dev/urandom | head -n1 | awk '{print $2}'
}

# Control a node
_nodetool() {
    command="$1"; shift

    "$ERTS_DIR/bin/escript" "$ROOTDIR/bin/nodetool" "$NAME_TYPE" "$NAME" \
                                -setcookie "$COOKIE" "$command" $@
}

# Run an escript in the node's environment
_escript() {
    shift; scriptpath="$1"; shift
    export RELEASE_ROOT_DIR

    "$ERTS_DIR/bin/escript" "$ROOTDIR/$scriptpath" $@
}

# Output a start command for the last argument of run_erl
_start_command() {
    printf "exec \"%s\" \"%s\"" "$RELEASE_ROOT_DIR/bin/$REL_NAME" \
           "$START_OPTION"
}

# Use $CWD/vm.args if exists, otherwise releases/VSN/vm.args
if [ -z "$VMARGS_PATH" ]; then
    if [ -f "$RELEASE_ROOT_DIR/vm.args" ]; then
        VMARGS_PATH="$RELEASE_ROOT_DIR/vm.args"
    else
        VMARGS_PATH="$REL_DIR/vm.args"
    fi
fi

orig_vmargs_path="$VMARGS_PATH.orig"
if [ $REPLACE_OS_VARS ]; then
    #Make sure we don't break dev mode by keeping the symbolic link to
    #the user's vm.args
    if [ ! -L "$orig_vmargs_path" ]; then
       #we're in copy mode, rename the vm.args file to vm.args.orig
       mv "$VMARGS_PATH" "$orig_vmargs_path"
    fi

    awk '{while(match($0,"[$]{[^}]*}")) {var=substr($0,RSTART+2,RLENGTH -3);gsub("[$]{"var"}",ENVIRON[var])}}1' < "$orig_vmargs_path" > "$VMARGS_PATH"
 else
    #We don't need to replace env. vars, just rename the
    #symlink vm.args.orig to vm.args, and keep it as a
    #symlink.
    if [ -L "$orig_vmargs_path" ]; then
       mv "$orig_vmargs_path" "$VMARGS_PATH"
    fi
fi

# Make sure log directory exists
mkdir -p "$RUNNER_LOG_DIR"

# Use $CWD/sys.config if exists, otherwise releases/VSN/sys.config
if [ -z "$SYS_CONFIG_PATH" ]; then
    if [ -f "$RELEASE_ROOT_DIR/sys.config" ]; then
        SYS_CONFIG_PATH="$RELEASE_ROOT_DIR/sys.config"
    else
        SYS_CONFIG_PATH="$REL_DIR/sys.config"
    fi
fi

orig_sys_config_path="$SYS_CONFIG_PATH.orig"
if [ $REPLACE_OS_VARS ]; then
    #Make sure we don't break dev mode by keeping the symbolic link to
    #the user's sys.config
    if [ ! -L "$orig_sys_config_path" ]; then
       #We're in copy mode, rename sys.config to sys.config.orig
       mv "$SYS_CONFIG_PATH" "$orig_sys_config_path"
    fi

    awk '{while(match($0,"[$]{[^}]*}")) {var=substr($0,RSTART+2,RLENGTH -3);gsub("[$]{"var"}",ENVIRON[var])}}1' < "$orig_sys_config_path" > "$SYS_CONFIG_PATH"
 else
    #We don't need to replace env. vars, just rename the
    #symlink sys.config.orig to sys.config. Keep it as
    #a symlink.
    if [ -L "$orig_sys_config_path" ]; then
       mv "$orig_sys_config_path"  "$SYS_CONFIG_PATH"
    fi
fi

# Extract the target node name from node.args
NAME_ARG=$(egrep '^-s?name' "$VMARGS_PATH" || true)
if [ -z "$NAME_ARG" ]; then
    echo "vm.args needs to have either -name or -sname parameter."
    exit 1
fi

# Extract the name type and name from the NAME_ARG for REMSH
NAME_TYPE="$(echo "$NAME_ARG" | awk '{print $1}')"
NAME="$(echo "$NAME_ARG" | awk '{print $2}')"

PIPE_DIR="${PIPE_DIR:-/tmp/erl_pipes/$NAME/}"

# Extract the target cookie
COOKIE_ARG="$(grep '^-setcookie' "$VMARGS_PATH" || true)"
DEFAULT_COOKIE_FILE="$HOME/.erlang.cookie"
if [ -z "$COOKIE_ARG" ]; then
    if [ -f "$DEFAULT_COOKIE_FILE" ]; then
        COOKIE="$(cat "$DEFAULT_COOKIE_FILE")"
    else
        printf "a secret cookie must be provided in one of the following ways:\n  - with vm.args using the -setcookie parameter,\n  or\n  by writing the cookie to '$DEFAULT_COOKIE_FILE', with permissions set to 0400"
        exit 1
    fi
else
    # Extract cookie name from COOKIE_ARG
    COOKIE="$(echo "$COOKIE_ARG" | awk '{print $2}')"
fi

find_erts_dir
export ROOTDIR="$RELEASE_ROOT_DIR"
export BINDIR="$ERTS_DIR/bin"
export EMU="beam"
export PROGNAME="erl"
export LD_LIBRARY_PATH="$ERTS_DIR/lib:$LD_LIBRARY_PATH"
ERTS_LIB_DIR="$ERTS_DIR/../lib"
CONSOLIDATED_DIR="$ROOTDIR/lib/${REL_NAME}-${REL_VSN}/consolidated"

cd "$ROOTDIR"

# User can specify an sname without @hostname
# This will fail when creating remote shell
# So here we check for @ and add @hostname if missing
case $NAME in
    *@*)
        # Nothing to do
        ;;
    *)
        NAME=$NAME@$(_get_nodename)
        ;;
esac

# Check the first argument for instructions
case "$1" in
    start|start_boot)

        # Make sure there is not already a node running
        #RES=`$NODETOOL ping`
        #if [ "$RES" = "pong" ]; then
        #    echo "Node is already running!"
        #    exit 1
        #fi
        # Save this for later.
        CMD=$1
        case "$1" in
            start)
                shift
                START_OPTION="console"
                HEART_OPTION="start"
                ;;
            start_boot)
                shift
                START_OPTION="console_boot"
                HEART_OPTION="start_boot"
                ;;
        esac
        RUN_PARAM="$@"

        # Set arguments for the heart command
        set -- "$SCRIPT_DIR/$REL_NAME" "$HEART_OPTION"
        [ "$RUN_PARAM" ] && set -- "$@" "$RUN_PARAM"

        # Export the HEART_COMMAND
        HEART_COMMAND="$RELEASE_ROOT_DIR/bin/$REL_NAME $CMD"
        export HEART_COMMAND

        mkdir -p "$PIPE_DIR"

        [ -f "$PRE_START_HOOK" ] && . "$PRE_START_HOOK"

        "$BINDIR/run_erl" -daemon "$PIPE_DIR" "$RUNNER_LOG_DIR" \
                          "$(_start_command)"

        [ -f "$POST_START_HOOK" ] && . "$POST_START_HOOK"
        ;;

    stop)
        [ -f "$PRE_STOP_HOOK" ] && . "$PRE_STOP_HOOK"
        # Wait for the node to completely stop...
        PID="$(_get_pid)"
        if ! _nodetool "stop"; then
            exit 1
        fi
        while $(kill -s 0 "$PID" 2>/dev/null);
        do
            sleep 1
        done
        [ -f "$POST_STOP_HOOK" ] && . "$POST_STOP_HOOK"
        ;;

    restart)
        ## Restart the VM without exiting the process
        if ! _nodetool "restart"; then
            exit 1
        fi
        ;;

    reboot)
        ## Restart the VM completely (uses heart to restart it)
        if ! _nodetool "reboot"; then
            exit 1
        fi
        ;;

    pid)
        ## Get the VM's pid
        if ! _get_pid; then
            exit 1
        fi
        ;;

    ping)
        ## See if the VM is alive
        if ! _nodetool "ping"; then
            exit 1
        fi
        ;;

    escript)
        ## Run an escript under the node's environment
        if ! _escript $@; then
            exit 1
        fi
        ;;

    attach)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        exec "$BINDIR/to_erl" "$PIPE_DIR"
        ;;

    remote_console)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        _rem_sh
        ;;

    upgrade|downgrade|install)
        if [ -z "$2" ]; then
            echo "Missing package argument"
            echo "Usage: $REL_NAME $1 {package base name}"
            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
            exit 1
        fi

        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        exec "$BINDIR/escript" "$ROOTDIR/bin/install_upgrade.escript" \
             "install" "$REL_NAME" "$NAME_TYPE" "$NAME" "$COOKIE" "$2"
        ;;

    unpack)
        if [ -z "$2" ]; then
            echo "Missing package argument"
            echo "Usage: $REL_NAME $1 {package base name}"
            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
            exit 1
        fi

        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        exec "$BINDIR/escript" "$ROOTDIR/bin/install_upgrade.escript" \
             "unpack" "$REL_NAME" "$NAME_TYPE" "$NAME" "$COOKIE" "$2"
        ;;

    console|console_clean|console_boot)
        # .boot file typically just $REL_NAME (ie, the app name)
        # however, for debugging, sometimes start_clean.boot is useful.
        # For e.g. 'setup', one may even want to name another boot script.
        case "$1" in
            console)
                if [ -f "$REL_DIR/$REL_NAME.boot" ]; then
                  BOOTFILE="$REL_DIR/$REL_NAME"
                else
                  BOOTFILE="$REL_DIR/start"
                fi
                ;;
            console_clean)
                BOOTFILE="$ROOTDIR/bin/start_clean"
                ;;
            console_boot)
                shift
                BOOTFILE="$1"
                shift
                ;;
        esac
        # Setup beam-required vars
        EMU="beam"
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" \
            -boot "$BOOTFILE" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -env ERL_LIBS "$REL_LIB_DIR" \
            -pa "$CONSOLIDATED_DIR" \
            -args_file "$VMARGS_PATH" \
            -config "$SYS_CONFIG_PATH" \
            -mode "$CODE_LOADING_MODE" \
            ${ERL_OPTS} \
            -user Elixir.IEx.CLI -extra --no-halt +iex

        # Dump environment info for logging purposes
        echo "Exec: $@" -- ${1+$ARGS}
        echo "Root: $ROOTDIR"

        # Log the startup
        echo "$RELEASE_ROOT_DIR"
        logger -t "$REL_NAME[$$]" "Starting up"

        # Start the VM, executing pre_start hook along
        # the way. We can't run the post_start hook because
        # the console will crash with no TTY attached
        [ -f "$PRE_START_HOOK" ] && . "$PRE_START_HOOK"
        exec "$@" -- ${1+$ARGS}
        ;;

    foreground)
        # start up the release in the foreground for use by runit
        # or other supervision services

        [ -f "$REL_DIR/$REL_NAME.boot" ] && BOOTFILE="$REL_NAME" || BOOTFILE=start
        FOREGROUNDOPTIONS="-noshell -noinput +Bd"

        # Setup beam-required vars
        EMU=beam
        PROGNAME="${0#*/}"

        export EMU
        export PROGNAME

        # Store passed arguments since they will be erased by `set`
        ARGS="$@"

        # Build an array of arguments to pass to exec later on
        # Build it here because this command will be used for logging.
        set -- "$BINDIR/erlexec" $FOREGROUNDOPTIONS \
            -boot "$REL_DIR/$BOOTFILE" -mode "$CODE_LOADING_MODE" -config "$SYS_CONFIG_PATH" \
            -boot_var ERTS_LIB_DIR "$ERTS_LIB_DIR" \
            -args_file "$VMARGS_PATH" \
            -env ERL_LIBS "$REL_LIB_DIR" \
            -pa "$CONSOLIDATED_DIR" \
            ${ERL_OPTS}

        # Dump environment info for logging purposes
        echo "Exec: $@" -- ${1+$ARGS}
        echo "Root: $ROOTDIR"

        # Start the VM, executing pre and post start hooks
        [ -f "$PRE_START_HOOK" ] && . "$PRE_START_HOOK"
        trap '{}' QUIT TERM KILL HUP SIGUSR1 SIGUSR2
        "$@" -- ${1+$ARGS} &
        __bg_pid=$!
        [ -f "$POST_START_HOOK" ] && . "$POST_START_HOOK"
        wait $__bg_pid
        ;;
    rpc)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        _nodetool rpc $@
        ;;
    rpcterms)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift

        _nodetool rpcterms $@
        ;;
    eval)
        # Make sure a node IS running
        if ! _nodetool "ping" > /dev/null; then
            echo "Node is not running!"
            exit 1
        fi

        shift
        _nodetool "eval" $@
        ;;
    *)
        echo "Usage: $REL_NAME {start|start_boot <file>|foreground|stop|restart|reboot|pid|ping|console|console_clean|console_boot <file>|attach|remote_console|upgrade|downgrade|install|escript|rpc|rpcterms|eval}"
        exit 1
        ;;
esac

exit 0