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- #!/usr/bin/env escript
- %%! -noshell -noinput
- %% -*- mode: erlang;erlang-indent-level: 4;indent-tabs-mode: nil -*-
- %% ex: ft=erlang ts=4 sw=4 et
-
- -define(TIMEOUT, 60000).
- -define(INFO(Fmt,Args), io:format(Fmt,Args)).
-
- %% TODO: This script currently does NOT support slim releases.
- %% Necessary steps to upgrade a slim release are as follows:
- %% 1. unpack relup archive manually
- %% 2. copy releases directory and necessary libraries
- %% 3. using release_hander:set_unpacked/2 .
- %% For more details, see https://github.com/rebar/rebar/pull/52
- %% and https://github.com/rebar/rebar/issues/202
-
- main([NodeName, Cookie, ReleasePackage]) ->
- TargetNode = start_distribution(NodeName, Cookie),
- {ok, Vsn} = rpc:call(TargetNode, release_handler, unpack_release,
- [ReleasePackage], ?TIMEOUT),
- ?INFO("Unpacked Release ~p~n", [Vsn]),
- {ok, OtherVsn, Desc} = rpc:call(TargetNode, release_handler,
- check_install_release, [Vsn], ?TIMEOUT),
- {ok, OtherVsn, Desc} = rpc:call(TargetNode, release_handler,
- install_release, [Vsn], ?TIMEOUT),
- ?INFO("Installed Release ~p~n", [Vsn]),
- ok = rpc:call(TargetNode, release_handler, make_permanent, [Vsn], ?TIMEOUT),
- ?INFO("Made Release ~p Permanent~n", [Vsn]);
- main(_) ->
- init:stop(1).
-
- start_distribution(NodeName, Cookie) ->
- MyNode = make_script_node(NodeName),
- {ok, _Pid} = net_kernel:start([MyNode, shortnames]),
- erlang:set_cookie(node(), list_to_atom(Cookie)),
- TargetNode = make_target_node(NodeName),
- case {net_kernel:hidden_connect_node(TargetNode),
- net_adm:ping(TargetNode)} of
- {true, pong} ->
- ok;
- {_, pang} ->
- io:format("Node ~p not responding to pings.\n", [TargetNode]),
- init:stop(1)
- end,
- TargetNode.
-
- make_target_node(Node) ->
- [_, Host] = string:tokens(atom_to_list(node()), "@"),
- list_to_atom(lists:concat([Node, "@", Host])).
-
- make_script_node(Node) ->
- list_to_atom(lists:concat([Node, "_upgrader_", os:getpid()])).
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