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644bb0a312
While building an upgrade the sys.config file should be copied into the upgrade tarball so release_handler:install_releases/1 does not clobber the existing configuration from the application environment.
221 lines
8.8 KiB
Erlang
221 lines
8.8 KiB
Erlang
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
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%% ex: ts=4 sw=4 et
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%% -------------------------------------------------------------------
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%%
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%% rebar: Erlang Build Tools
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%%
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%% Copyright (c) 2011 Joe Williams (joe@joetify.com)
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%%
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%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%% of this software and associated documentation files (the "Software"), to deal
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%% in the Software without restriction, including without limitation the rights
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%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%% copies of the Software, and to permit persons to whom the Software is
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%% furnished to do so, subject to the following conditions:
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%%
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%% The above copyright notice and this permission notice shall be included in
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%% all copies or substantial portions of the Software.
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%%
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%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%% THE SOFTWARE.
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%% -------------------------------------------------------------------
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-module(rebar_upgrade).
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-include("rebar.hrl").
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-include_lib("kernel/include/file.hrl").
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-export(['generate-upgrade'/2]).
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-define(TMP, "_tmp").
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%% ====================================================================
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%% Public API
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%% ====================================================================
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'generate-upgrade'(_Config, ReltoolFile) ->
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%% Get the old release path
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ReltoolConfig = rebar_rel_utils:load_config(ReltoolFile),
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TargetParentDir = rebar_rel_utils:get_target_parent_dir(ReltoolConfig),
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TargetDir = rebar_rel_utils:get_target_dir(ReltoolConfig),
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OldVerPath = filename:join([TargetParentDir,
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rebar_rel_utils:get_previous_release_path()]),
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%% Run checks to make sure that building a package is possible
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{NewVerPath, NewName, NewVer} = run_checks(OldVerPath, ReltoolConfig),
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NameVer = NewName ++ "_" ++ NewVer,
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%% Save the code path prior to doing anything
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OrigPath = code:get_path(),
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%% Prepare the environment for building the package
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ok = setup(OldVerPath, NewVerPath, NewName, NewVer, NameVer),
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%% Build the package
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run_systools(NameVer, NewName),
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%% Boot file changes
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{ok, _} = boot_files(TargetDir, NewVer, NewName),
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%% Extract upgrade and tar it back up with changes
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make_tar(NameVer),
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%% Clean up files that systools created
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ok = cleanup(NameVer),
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%% Restore original path
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true = code:set_path(OrigPath),
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ok.
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%% ===================================================================
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%% Internal functions
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%% ==================================================================
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run_checks(OldVerPath, ReltoolConfig) ->
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true = rebar_utils:prop_check(filelib:is_dir(OldVerPath),
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"Release directory doesn't exist (~p)~n", [OldVerPath]),
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{Name, Ver} = rebar_rel_utils:get_reltool_release_info(ReltoolConfig),
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NewVerPath = filename:join([
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rebar_rel_utils:get_target_parent_dir(ReltoolConfig),
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Name]),
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true = rebar_utils:prop_check(filelib:is_dir(NewVerPath),
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"Release directory doesn't exist (~p)~n", [NewVerPath]),
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{NewName, NewVer} = rebar_rel_utils:get_rel_release_info(Name, NewVerPath),
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{OldName, OldVer} = rebar_rel_utils:get_rel_release_info(Name, OldVerPath),
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true = rebar_utils:prop_check(NewName == OldName,
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"New and old .rel release names do not match~n", []),
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true = rebar_utils:prop_check(Name == NewName,
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"Reltool and .rel release names do not match~n", []),
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true = rebar_utils:prop_check(NewVer =/= OldVer,
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"New and old .rel contain the same version~n", []),
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true = rebar_utils:prop_check(Ver == NewVer,
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"Reltool and .rel versions do not match~n", []),
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{NewVerPath, NewName, NewVer}.
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setup(OldVerPath, NewVerPath, NewName, NewVer, NameVer) ->
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Src = filename:join([NewVerPath, "releases",
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NewVer, NewName ++ ".rel"]),
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Dst = filename:join([".", NameVer ++ ".rel"]),
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{ok, _} = file:copy(Src, Dst),
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ok = code:add_pathsa(
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lists:append([
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filelib:wildcard(filename:join([OldVerPath,
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"releases", "*"])),
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filelib:wildcard(filename:join([OldVerPath,
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"lib", "*", "ebin"])),
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filelib:wildcard(filename:join([NewVerPath,
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"lib", "*", "ebin"])),
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filelib:wildcard(filename:join([NewVerPath, "*"]))
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])).
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run_systools(NewVer, Name) ->
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Opts = [silent],
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NameList = [Name],
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case systools:make_relup(NewVer, NameList, NameList, Opts) of
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{error, _, Msg} ->
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?ABORT("Systools [systools:make_relup/4] aborted with: ~p~n",
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[Msg]);
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_ ->
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?DEBUG("Relup created~n", []),
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case systools:make_script(NewVer, Opts) of
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{error, _, Msg1} ->
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?ABORT("Systools [systools:make_script/2] "
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"aborted with: ~p~n", [Msg1]);
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_ ->
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?DEBUG("Script created~n", []),
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case systools:make_tar(NewVer, Opts) of
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{error, _, Msg2} ->
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?ABORT("Systools [systools:make_tar/2] "
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"aborted with: ~p~n", [Msg2]);
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_ ->
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?DEBUG("Tarball created~n", []),
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ok
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end
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end
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end.
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boot_files(TargetDir, Ver, Name) ->
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ok = file:make_dir(filename:join([".", ?TMP])),
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ok = file:make_dir(filename:join([".", ?TMP, "releases"])),
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ok = file:make_dir(filename:join([".", ?TMP, "releases", Ver])),
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ok = file:make_symlink(
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filename:join(["start.boot"]),
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filename:join([".", ?TMP, "releases", Ver, Name ++ ".boot"])),
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{ok, _} =
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file:copy(
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filename:join([TargetDir, "releases", Ver, "start_clean.boot"]),
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filename:join([".", ?TMP, "releases", Ver, "start_clean.boot"])),
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{ok, _} = file:copy(
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filename:join([TargetDir, "releases", Ver, "sys.config"]),
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filename:join([".", ?TMP, "releases", Ver, "sys.config"])),
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{ok, _} = file:copy(
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filename:join([TargetDir, "releases", Ver, "vm.args"]),
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filename:join([".", ?TMP, "releases", Ver, "vm.args"])).
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make_tar(NameVer) ->
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Filename = NameVer ++ ".tar.gz",
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{ok, Cwd} = file:get_cwd(),
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Absname = filename:join([Cwd, Filename]),
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ok = file:set_cwd(?TMP),
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ok = erl_tar:extract(Absname, [compressed]),
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ok = file:delete(Absname),
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{ok, Tar} = erl_tar:open(Absname, [write, compressed]),
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ok = erl_tar:add(Tar, "lib", []),
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ok = erl_tar:add(Tar, "releases", []),
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ok = erl_tar:close(Tar),
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ok = file:set_cwd(Cwd),
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?CONSOLE("~s upgrade package created~n", [NameVer]).
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cleanup(NameVer) ->
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?DEBUG("Removing files needed for building the upgrade~n", []),
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Files = [
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filename:join([".", NameVer ++ ".rel"]),
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filename:join([".", NameVer ++ ".boot"]),
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filename:join([".", NameVer ++ ".script"]),
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filename:join([".", "relup"])
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],
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lists:foreach(fun(F) -> ok = file:delete(F) end, Files),
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ok = remove_dir_tree(?TMP).
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%% adapted from http://www.erlang.org/doc/system_principles/create_target.html
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remove_dir_tree(Dir) ->
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remove_all_files(".", [Dir]).
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remove_all_files(Dir, Files) ->
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lists:foreach(fun(File) ->
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FilePath = filename:join([Dir, File]),
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{ok, FileInfo, Link} = file_info(FilePath),
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case {Link, FileInfo#file_info.type} of
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{false, directory} ->
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{ok, DirFiles} = file:list_dir(FilePath),
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remove_all_files(FilePath, DirFiles),
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file:del_dir(FilePath);
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_ ->
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file:delete(FilePath)
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end
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end, Files).
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file_info(Path) ->
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case file:read_file_info(Path) of
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{ok, Info} ->
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{ok, Info, false};
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{error, enoent} ->
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{ok, Info} = file:read_link_info(Path),
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{ok, Info, true};
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Error ->
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Error
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end.
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