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|
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
%%
%% Permission is hereby granted, free of charge, to any person obtaining a copy
%% of this software and associated documentation files (the "Software"), to deal
%% in the Software without restriction, including without limitation the rights
%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
%% copies of the Software, and to permit persons to whom the Software is
%% furnished to do so, subject to the following conditions:
%%
%% The above copyright notice and this permission notice shall be included in
%% all copies or substantial portions of the Software.
%%
%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
%% THE SOFTWARE.
%% -------------------------------------------------------------------
-module(rebar_reltool).
-export([generate/2,
clean/2]).
-include("rebar.hrl").
-include_lib("reltool/src/reltool.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
generate(Config, ReltoolFile) ->
%% Load the reltool configuration from the file
ReltoolConfig = load_config(ReltoolFile),
%% Spin up reltool server and load our config into it
{ok, Server} = reltool:start_server([{sys, ReltoolConfig}]),
%% Do some validation of the reltool configuration; error messages out of
%% reltool are still pretty cryptic
validate_rel_apps(Server, ReltoolConfig),
%% Finally, run reltool
case catch(run_reltool(Config, ReltoolConfig)) of
ok ->
ok;
{error, failed} ->
?FAIL;
Other2 ->
?ERROR("Unexpected error: ~p\n", [Other2]),
?FAIL
end.
clean(Config, ReltoolFile) ->
ReltoolConfig = load_config(ReltoolFile),
TargetDir = target_dir(Config, ReltoolConfig),
rebar_file_utils:rm_rf(TargetDir),
rebar_file_utils:delete_each(["reltool.spec"]).
%% ===================================================================
%% Internal functions
%% ===================================================================
load_config(ReltoolFile) ->
%% Load the reltool configuration from the file
case file:consult(ReltoolFile) of
{ok, [{sys, ReltoolConfig}]} ->
ReltoolConfig;
Other ->
?ERROR("Failed to load expected config from ~s: ~p\n", [ReltoolFile, Other]),
?FAIL
end.
%%
%% Determine the name of the target directory; try the user provided name
%% first, or fall back to the release name if that's available. If neither
%% is available, just use "target"
%%
target_dir(Config, ReltoolConfig) ->
case rebar_config:get(Config, target_name, undefined) of
undefined ->
case lists:keysearch(rel, 1, ReltoolConfig) of
{value, {rel, Name, _Vsn, _Apps}} ->
Name;
false ->
"target"
end;
Name ->
Name
end.
validate_rel_apps(ReltoolServer, ReltoolConfig) ->
case lists:keysearch(rel, 1, ReltoolConfig) of
{value, {rel, _Name, _Vsn, Apps}} ->
%% Identify all the apps that do NOT exist, based on what's available
%% from the reltool server
Missing = lists:sort([App || App <- Apps,
app_exists(App, ReltoolServer) == false]),
case Missing of
[] ->
ok;
_ ->
?ERROR("Apps in {rel, ...} section not found by reltool: ~p\n", [Missing]),
?FAIL
end;
{value, Rel} ->
%% Invalid release format!
?ERROR("Invalid {rel, ...} section in reltools.config: ~p\n", [Rel]),
?FAIL;
false ->
ok
end.
app_exists(App, Server) when is_atom(App) ->
case reltool_server:get_app(Server, App) of
{ok, _} ->
true;
_ ->
false
end;
app_exists(AppTuple, Server) when is_tuple(AppTuple) ->
app_exists(element(1, AppTuple), Server).
run_reltool(Config, ReltoolConfig) ->
{ok, Server} = reltool:start_server([{sys, ReltoolConfig}]),
case reltool:get_target_spec(Server) of
{ok, Spec} ->
dump_spec(Spec),
TargetDir = target_dir(Config, ReltoolConfig),
case file:make_dir(TargetDir) of
ok ->
ok;
{error, eexist} ->
%% Output directory already exists; if force=1, wipe it out
case rebar_config:get_global(force, "0") of
"1" ->
rebar_file_utils:rm_rf(TargetDir),
ok = file:make_dir(TargetDir);
_ ->
?ERROR("Release target directory ~p already exists!\n", [TargetDir]),
?FAIL
end
end,
case reltool:eval_target_spec(Spec, code:root_dir(), TargetDir) of
ok ->
ok;
{error, Reason} ->
?ERROR("Failed to generate target from spec: ~p\n", [Reason]),
?FAIL
end;
{error, Reason} ->
?ERROR("Unable to generate spec: ~s\n", [Reason]),
?FAIL
end.
dump_spec(Spec) ->
case rebar_config:get_global(dump_spec, "0") of
"1" ->
SpecBin = list_to_binary(io_lib:print(Spec, 1, 120, -1)),
ok = file:write_file("reltool.spec", SpecBin);
_ ->
ok
end.
|
