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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
-module(rebar_plugins).
-export([top_level_install/1
,project_apps_install/1
,install/2
,handle_plugins/3
,handle_plugins/4]).
-include("rebar.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
-spec top_level_install(rebar_state:t()) -> rebar_state:t().
top_level_install(State) ->
Profiles = rebar_state:current_profiles(State),
lists:foldl(fun(Profile, StateAcc) ->
Plugins = rebar_state:get(State, {plugins, Profile}, []),
handle_plugins(Profile, Plugins, StateAcc)
end, State, Profiles).
-spec project_apps_install(rebar_state:t()) -> rebar_state:t().
project_apps_install(State) ->
Profiles = rebar_state:current_profiles(State),
ProjectApps = rebar_state:project_apps(State),
lists:foldl(fun(Profile, StateAcc) ->
Plugins = rebar_state:get(State, {plugins, Profile}, []),
StateAcc1 = handle_plugins(Profile, Plugins, StateAcc),
lists:foldl(fun(AppInfo, StateAcc2) ->
C = rebar_config:consult(rebar_app_info:dir(AppInfo)),
AppInfo0 = rebar_app_info:update_opts(AppInfo, rebar_app_info:opts(AppInfo), C),
Plugins2 = rebar_app_info:get(AppInfo0, {plugins, Profile}, []),
handle_plugins(Profile, Plugins2, StateAcc2)
end, StateAcc1, ProjectApps)
end, State, Profiles).
-spec install(rebar_state:t(), rebar_app_info:t()) -> rebar_state:t().
install(State, AppInfo) ->
Profiles = rebar_state:current_profiles(State),
%% don't lose the overrides of the dep we are processing plugins for
Overrides = rebar_app_info:get(AppInfo, overrides, []),
StateOverrides = rebar_state:get(State, overrides, []),
AllOverrides = Overrides ++ StateOverrides,
State1 = rebar_state:set(State, overrides, AllOverrides),
State2 = lists:foldl(fun(Profile, StateAcc) ->
Plugins = rebar_app_info:get(AppInfo, {plugins, Profile}, []),
handle_plugins(Profile, Plugins, StateAcc)
end, State1, Profiles),
%% Reset the overrides after processing the dep
rebar_state:set(State2, overrides, StateOverrides).
handle_plugins(Profile, Plugins, State) ->
handle_plugins(Profile, Plugins, State, false).
handle_plugins(Profile, Plugins, State, Upgrade) ->
%% Set deps dir to plugins dir so apps are installed there
Locks = rebar_state:lock(State),
DepsDir = rebar_state:get(State, deps_dir, ?DEFAULT_DEPS_DIR),
State1 = rebar_state:set(State, deps_dir, ?DEFAULT_PLUGINS_DIR),
%% Install each plugin individually so if one fails to install it doesn't effect the others
{_PluginProviders, State2} =
lists:foldl(fun(Plugin, {PluginAcc, StateAcc}) ->
{NewPlugins, NewState} = handle_plugin(Profile, Plugin, StateAcc, Upgrade),
NewState1 = rebar_state:create_logic_providers(NewPlugins, NewState),
{PluginAcc++NewPlugins, NewState1}
end, {[], State1}, Plugins),
%% reset deps dir
State3 = rebar_state:set(State2, deps_dir, DepsDir),
rebar_state:lock(State3, Locks).
handle_plugin(Profile, Plugin, State, Upgrade) ->
try
{Apps, State2} = rebar_prv_install_deps:handle_deps_as_profile(Profile, State, [Plugin], Upgrade),
{no_cycle, Sorted} = rebar_prv_install_deps:find_cycles(Apps),
ToBuild = rebar_prv_install_deps:cull_compile(Sorted, []),
%% Add already built plugin deps to the code path
CodePaths = [rebar_app_info:ebin_dir(A) || A <- Apps -- ToBuild],
code:add_pathsa(CodePaths),
%% Build plugin and its deps
[build_plugin(AppInfo, Apps, State2) || AppInfo <- ToBuild],
%% Add newly built deps and plugin to code path
State3 = rebar_state:update_all_plugin_deps(State2, Apps),
NewCodePaths = [rebar_app_info:ebin_dir(A) || A <- ToBuild],
code:add_pathsa(CodePaths),
%% Store plugin code paths so we can remove them when compiling project apps
State4 = rebar_state:update_code_paths(State3, all_plugin_deps, CodePaths++NewCodePaths),
{plugin_providers(Plugin), State4}
catch
C:T ->
?DEBUG("~p ~p ~p", [C, T, erlang:get_stacktrace()]),
?WARN("Plugin ~p not available. It will not be used.", [Plugin]),
{[], State}
end.
build_plugin(AppInfo, Apps, State) ->
Providers = rebar_state:providers(State),
%Providers1 = rebar_state:providers(rebar_app_info:state(AppInfo)),
%rebar_app_info:state_or_new(State, AppInfo)
S = rebar_state:all_deps(State, Apps),
S1 = rebar_state:set(S, deps_dir, ?DEFAULT_PLUGINS_DIR),
rebar_prv_compile:compile(S1, Providers, AppInfo).
plugin_providers({Plugin, _, _, _}) when is_atom(Plugin) ->
validate_plugin(Plugin);
plugin_providers({Plugin, _, _}) when is_atom(Plugin) ->
validate_plugin(Plugin);
plugin_providers({Plugin, _}) when is_atom(Plugin) ->
validate_plugin(Plugin);
plugin_providers(Plugin) when is_atom(Plugin) ->
validate_plugin(Plugin).
validate_plugin(Plugin) ->
_ = application:load(Plugin),
case application:get_env(Plugin, providers) of
{ok, Providers} ->
Providers;
undefined ->
Exports = Plugin:module_info(exports),
case lists:member({init,1}, Exports) of
false ->
?WARN("Plugin ~p does not export init/1. It will not be used.", [Plugin]),
[];
true ->
[Plugin]
end
end.
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