diff options
Diffstat (limited to 'src/rcl_prv_discover.erl')
| -rw-r--r-- | src/rcl_prv_discover.erl | 189 |
1 files changed, 11 insertions, 178 deletions
diff --git a/src/rcl_prv_discover.erl b/src/rcl_prv_discover.erl index 862bd6e..1ffbece 100644 --- a/src/rcl_prv_discover.erl +++ b/src/rcl_prv_discover.erl @@ -43,71 +43,22 @@ init(State) -> -spec do(rcl_state:t()) -> {ok, rcl_state:t()} | relcool:error(). do(State) -> LibDirs = get_lib_dirs(State), - rcl_log:info(rcl_state:log(State), - fun() -> - ["Resolving OTP Applications from directories:\n", - [[rcl_util:indent(1), LibDir, "\n"] || LibDir <- LibDirs]] - end), - resolve_app_metadata(State, LibDirs). + case rcl_app_discovery:do(State, LibDirs) of + {ok, AppMeta} -> + {ok, rcl_state:available_apps(State, AppMeta)}; + Error -> + Error + end. --spec format_error([ErrorDetail::term()]) -> iolist(). -format_error(ErrorDetails) - when erlang:is_list(ErrorDetails) -> - [[format_detail(ErrorDetail), "\n"] || ErrorDetail <- ErrorDetails]. +%% @doc this is here to comply with the signature. However, we do not actually +%% produce any errors and so simply return an empty string. +-spec format_error(any()) -> iolist(). +format_error(_) -> + "". %%%=================================================================== %%% Internal Functions %%%=================================================================== -resolve_app_metadata(State, LibDirs) -> - AppMeta0 = lists:flatten(ec_plists:map(fun(LibDir) -> - discover_dir([], LibDir) - end, LibDirs)), - AppMeta1 = setup_overrides(State, AppMeta0), - - Errors = [case El of - {error, Ret} -> Ret; - _ -> El - end - || El <- AppMeta1, - case El of - {error, _} -> - true; - _ -> - false - end], - - case Errors of - [] -> - AppMeta2 = lists:flatten(AppMeta1), - rcl_log:debug(rcl_state:log(State), - fun() -> - ["Resolved the following OTP Applications from the system: \n", - [[rcl_app_info:format(1, App), "\n"] || App <- AppMeta2]] - end), - {ok, rcl_state:available_apps(State, AppMeta2)}; - _ -> - ?RCL_ERROR(Errors) - end. - -app_name({error, _}) -> - undefined; -app_name(AppMeta) -> - rcl_app_info:name(AppMeta). - -setup_overrides(State, AppMetas0) -> - Overrides = rcl_state:overrides(State), - AppMetas1 = [AppMeta || AppMeta <- AppMetas0, - not lists:keymember(app_name(AppMeta), 1, Overrides)], - [case is_valid_otp_app(filename:join([FileName, "ebin", - erlang:atom_to_list(AppName) ++ ".app"])) of - [] -> - {error, {invalid_override, AppName, FileName}}; - Error = {error, _} -> - Error; - App -> - rcl_app_info:link(App, true) - end || {AppName, FileName} <- Overrides] ++ AppMetas1. - get_lib_dirs(State) -> LibDirs0 = rcl_state:lib_dirs(State), case rcl_state:get(State, disable_default_libs, false) of @@ -140,121 +91,3 @@ add_system_lib_dir(State, LibDirs) -> LibDirs end end. - --spec format_detail(ErrorDetail::term()) -> iolist(). -format_detail({error, {invalid_override, AppName, FileName}}) -> - io_lib:format("Override {~p, ~p} is not a valid OTP App. Perhaps you forgot to build it?", - [AppName, FileName]); -format_detail({accessing, File, eaccess}) -> - io_lib:format("permission denied accessing file ~s", [File]); -format_detail({accessing, File, Type}) -> - io_lib:format("error (~p) accessing file ~s", [Type, File]); -format_detail({no_beam_files, EbinDir}) -> - io_lib:format("no beam files found in directory ~s", [EbinDir]); -format_detail({not_a_directory, EbinDir}) -> - io_lib:format("~s is not a directory when it should be a directory", [EbinDir]); -format_detail({unable_to_load_app, AppDir, _}) -> - io_lib:format("Unable to load the application metadata from ~s", [AppDir]); -format_detail({invalid_app_file, File}) -> - io_lib:format("Application metadata file exists but is malformed: ~s", - [File]); -format_detail({unversioned_app, AppDir, _AppName}) -> - io_lib:format("Application metadata exists but version is not available: ~s", - [AppDir]); -format_detail({app_info_error, {Module, Detail}}) -> - Module:format_error(Detail). - --spec discover_dir([file:name()], - file:name()) -> - [rcl_app_info:t() | {error, Reason::term()}] | - rcl_app_info:t() | {error, Reason::term()}. -discover_dir(IgnoreDirs, File) -> - case (not lists:member(File, IgnoreDirs)) - andalso filelib:is_dir(File) of - true -> - case file:list_dir(File) of - {error, Reason} -> - {error, {accessing, File, Reason}}; - {ok, List} -> - ec_plists:map(fun(LibDir) -> - discover_dir(IgnoreDirs, LibDir) - end, [filename:join([File, Dir]) || Dir <- List]) - end; - false -> - is_valid_otp_app(File) - end. - --spec is_valid_otp_app(file:name()) -> rcl_app_info:t() | {error, Reason::term()} | []. -is_valid_otp_app(File) -> - %% Is this an ebin dir? - EbinDir = filename:dirname(File), - case filename:basename(EbinDir) of - "ebin" -> - case lists:suffix(".app", File) of - true -> - has_at_least_one_beam(EbinDir, File); - false -> - [] - end; - _ -> - [] - end. - --spec has_at_least_one_beam(file:name(), file:filename()) -> - rcl_app_info:t() | {error, Reason::term()}. -has_at_least_one_beam(EbinDir, File) -> - case file:list_dir(EbinDir) of - {ok, List} -> - case lists:any(fun(NFile) -> lists:suffix(".beam", NFile) end, List) of - true -> - gather_application_info(EbinDir, File); - false -> - {error, {no_beam_files, EbinDir}} - end; - _ -> - {error, {not_a_directory, EbinDir}} - end. - --spec gather_application_info(file:name(), file:filename()) -> - rcl_app_info:t() | {error, Reason::term()}. -gather_application_info(EbinDir, File) -> - AppDir = filename:dirname(EbinDir), - case file:consult(File) of - {ok, [{application, AppName, AppDetail}]} -> - get_vsn(AppDir, AppName, AppDetail); - {error, Reason} -> - {error, {unable_to_load_app, AppDir, Reason}}; - _ -> - {error, {invalid_app_file, File}} - end. - --spec get_vsn(file:name(), atom(), proplists:proplist()) -> - rcl_app_info:t() | {error, Reason::term()}. -get_vsn(AppDir, AppName, AppDetail) -> - case proplists:get_value(vsn, AppDetail) of - undefined -> - {error, {unversioned_app, AppDir, AppName}}; - AppVsn -> - case get_deps(AppDir, AppName, AppVsn, AppDetail) of - {ok, App} -> - App; - {error, Detail} -> - {error, {app_info_error, Detail}} - end - end. - --spec get_deps(file:name(), atom(), string(), proplists:proplist()) -> - {ok, rcl_app_info:t()} | {error, Reason::term()}. -get_deps(AppDir, AppName, AppVsn, AppDetail) -> - ActiveApps = proplists:get_value(applications, AppDetail, []), - LibraryApps = proplists:get_value(included_applications, AppDetail, []), - rcl_app_info:new(AppName, AppVsn, AppDir, ActiveApps, LibraryApps). - -%%%=================================================================== -%%% Test Functions -%%%=================================================================== - --ifndef(NOTEST). --include_lib("eunit/include/eunit.hrl"). - --endif. |