[WIP] erlup

Upgrade tools for Erlang/OTP. Contains rebar3 plugin and escript.

Overview

It is a tool to support the upgrade and downgrade of OTP application.

1. Automatic generation of the appup file. See also.

Usage

Using rebar3

%% rebar.config
{plugins, [erlup]}.

$ git checkout v0.0.1
$ rebar3 release        # make a previous version package

$ git checkout v0.0.2
$ rebar3 release        # make a current version package

$ rebar3 erlup appup    # generate the appup files (v0.0.1 -> v0.0.2)
$ rebar3 erlup relup    # generate the relup file  (v0.0.1 -> v0.0.2)

Using escript

$ git clone https://github.com/soranoba/erlup
$ cd erlup
$ make

$ ls /usr/local/myapp/releases         # previous versions
0.0.1 0.0.2 RELEASES  start_erl.data
$ ls /tmp/myapp/releases               # a new version
0.0.3 RELEASES start_erl.data

$ erlup appup --dir /tmp/myapp,/usr/local/myapp -p 0.0.1 -c 0.0.2
$ erlup relup --dir /tmp/myapp

More information

$ rebar3 help erlup
$ erlup -h

Configure file

If you use the rebar3.

%% rebar.config
{erlup,
 [
  {appup, [{extra, {[], []}}]},
  {relup, []}
 ]}.

If you use the escript.

%% erlup.config
{appup, [{extra, {[], []}}]}.
{relup, []}.

The escript can read in the form of a rebar3.config.

Attributes