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authorEric B Merritt <[email protected]>2013-04-03 18:35:01 -0700
committerEric B Merritt <[email protected]>2013-04-03 18:39:49 -0700
commit449d8e1f5cf114fe74bcb89c88ff74e98194e5ac (patch)
treeb529adfedda77762cdd551f29a130769df15d18e
parent8dde5e2607eb18c9e1ea9a19d5b1f563ace11251 (diff)
downloadrelx-449d8e1f5cf114fe74bcb89c88ff74e98194e5ac.tar.gz
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support shared resoure as far as discovery goes
also correctly handles symlinks without infinite loops
-rw-r--r--src/rcl_app_discovery.erl82
-rw-r--r--src/rcl_dscv_util.erl144
-rw-r--r--src/rcl_rel_discovery.erl75
3 files changed, 208 insertions, 93 deletions
diff --git a/src/rcl_app_discovery.erl b/src/rcl_app_discovery.erl
index 20df1cf..43557c4 100644
--- a/src/rcl_app_discovery.erl
+++ b/src/rcl_app_discovery.erl
@@ -53,39 +53,33 @@ format_error(ErrorDetails)
%%% 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, _} ->
+ AppMeta0 = lists:flatten(rcl_dscv_util:do(fun discover_dir/2, LibDirs)),
+ case [case Err of
+ {error, Ret} ->
+ Ret
+ end
+ || Err <- AppMeta0,
+ case Err of
+ {error, _} ->
true;
_ ->
false
- end],
-
- case Errors of
+ end] of
[] ->
- AppMeta2 = lists:flatten(AppMeta1),
+ AppMeta1 = [App || {ok, App} <- setup_overrides(State, AppMeta0)],
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]]
+ [[rcl_app_info:format(1, App), "\n"] || App <- AppMeta1]]
end),
- {ok, AppMeta2};
- _ ->
+ {ok, AppMeta1};
+ Errors ->
?RCL_ERROR(Errors)
end.
app_name({error, _}) ->
undefined;
-app_name(AppMeta) ->
+app_name({ok, AppMeta}) ->
rcl_app_info:name(AppMeta).
setup_overrides(State, AppMetas0) ->
@@ -94,16 +88,15 @@ setup_overrides(State, 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
- [] ->
+ {noresult, false} ->
{error, {invalid_override, AppName, FileName}};
Error = {error, _} ->
Error;
- App ->
- rcl_app_info:link(App, true)
+ {ok, App} ->
+ {ok, rcl_app_info:link(App, true)}
end || {AppName, FileName} <- Overrides] ++ AppMetas1.
-
-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?",
@@ -127,27 +120,16 @@ format_detail({unversioned_app, AppDir, _AppName}) ->
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 discover_dir([file:name()], directory | file) ->
+ {ok, rcl_app_info:t()} | {error, Reason::term()}.
+discover_dir(_File, directory) ->
+ {noresult, true};
+discover_dir(File, file) ->
+ is_valid_otp_app(File).
+
+-spec is_valid_otp_app(file:name()) -> {ok, rcl_app_info:t()} | {error, Reason::term()} |
+ {noresult, false}.
--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),
@@ -157,14 +139,14 @@ is_valid_otp_app(File) ->
true ->
has_at_least_one_beam(EbinDir, File);
false ->
- []
+ {noresult, false}
end;
_ ->
- []
+ {noresult, false}
end.
-spec has_at_least_one_beam(file:name(), file:filename()) ->
- rcl_app_info:t() | {error, Reason::term()}.
+ {ok, rcl_app_info:t()} | {error, Reason::term()}.
has_at_least_one_beam(EbinDir, File) ->
case file:list_dir(EbinDir) of
{ok, List} ->
@@ -179,7 +161,7 @@ has_at_least_one_beam(EbinDir, File) ->
end.
-spec gather_application_info(file:name(), file:filename()) ->
- rcl_app_info:t() | {error, Reason::term()}.
+ {ok, rcl_app_info:t()} | {error, Reason::term()}.
gather_application_info(EbinDir, File) ->
AppDir = filename:dirname(EbinDir),
case file:consult(File) of
@@ -192,7 +174,7 @@ gather_application_info(EbinDir, File) ->
end.
-spec get_vsn(file:name(), atom(), proplists:proplist()) ->
- rcl_app_info:t() | {error, Reason::term()}.
+ {ok, rcl_app_info:t()} | {error, Reason::term()}.
get_vsn(AppDir, AppName, AppDetail) ->
case proplists:get_value(vsn, AppDetail) of
undefined ->
@@ -200,7 +182,7 @@ get_vsn(AppDir, AppName, AppDetail) ->
AppVsn ->
case get_deps(AppDir, AppName, AppVsn, AppDetail) of
{ok, App} ->
- App;
+ {ok, App};
{error, Detail} ->
{error, {app_info_error, Detail}}
end
diff --git a/src/rcl_dscv_util.erl b/src/rcl_dscv_util.erl
new file mode 100644
index 0000000..4fb6126
--- /dev/null
+++ b/src/rcl_dscv_util.erl
@@ -0,0 +1,144 @@
+%% -*- erlang-indent-level: 4; indent-tabs-mode: nil; fill-column: 80 -*-
+%%% Copyright 2012 Erlware, LLC. All Rights Reserved.
+%%%
+%%% This file is provided to you under the Apache License,
+%%% Version 2.0 (the "License"); you may not use this file
+%%% except in compliance with the License. You may obtain
+%%% a copy of the License at
+%%%
+%%% http://www.apache.org/licenses/LICENSE-2.0
+%%%
+%%% Unless required by applicable law or agreed to in writing,
+%%% software distributed under the License is distributed on an
+%%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+%%% KIND, either express or implied. See the License for the
+%%% specific language governing permissions and limitations
+%%% under the License.
+%%%---------------------------------------------------------------------------
+%%% @author Eric Merritt <[email protected]>
+%%% @copyright (C) 2012 Erlware, LLC.
+%%%
+%%% @doc This provider uses the lib_dir setting of the state. It searches the
+%%% Lib Dirs looking for all OTP Applications that are available. When it finds
+%%% those OTP Applications it loads the information about them and adds them to
+%%% the state of available apps. This implements the rcl_provider behaviour.
+-module(rcl_dscv_util).
+
+-export([do/2,
+ format_error/1]).
+
+-include_lib("relcool/include/relcool.hrl").
+
+%%============================================================================
+%% Types
+%%============================================================================
+
+-type process_fun(Result) :: fun((filename:name(), file | directory) ->
+ {ok, Result} |
+ {error, term()} |
+ {ok, Result, Recurse::boolean()} |
+ {noresult, Recurse::boolean()} |
+ {error, term()}).
+
+%%============================================================================
+%% API
+%%============================================================================
+
+%% @doc recursively dig down into the library directories specified in the state
+%% looking for OTP Applications
+-spec do(process_fun([term()] | term()), [filename:name()]) ->
+ [term() | {error, term()}].
+do(ProcessDir, LibDirs) ->
+ lists:flatten(ec_plists:map(fun(LibDir) ->
+ discover_dir(ProcessDir, LibDir,
+ ec_file:type(LibDir))
+ end, LibDirs)).
+
+-spec format_error([ErrorDetail::term()]) -> iolist().
+format_error(ErrorDetails)
+ when erlang:is_list(ErrorDetails) ->
+ [[format_detail(ErrorDetail), "\n"] || ErrorDetail <- ErrorDetails].
+
+%%%===================================================================
+%%% Internal Functions
+%%%===================================================================
+-spec format_detail(ErrorDetail::term()) -> iolist().
+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({not_a_directory, EbinDir}) ->
+ io_lib:format("~s is not a directory when it should be a directory", [EbinDir]).
+
+-spec discover_dir(process_fun([term()] | term()),
+ file:name(),
+ directory | file | symlink) ->
+ [{ok, term()}
+ | {error, Reason::term()}]
+ | []
+ | {ok, term()}
+ | {error, Reason::term()}.
+discover_dir(ProcessDir, File, directory) ->
+ case ProcessDir(File, directory) of
+ {ok, Result, true} ->
+ [{ok, Result} | recurse(ProcessDir, File)];
+ {noresult, true} ->
+ recurse(ProcessDir, File);
+ {ok, Result, _} ->
+ [{ok, Result}];
+ {noresult, _} ->
+ [];
+ Err = {error, _} ->
+ [Err]
+ end;
+discover_dir(ProcessDir, File, file) ->
+ Res = ProcessDir(File, file),
+ io:format("Result -> ~p~n", [Res]),
+ case ProcessDir(File, file) of
+ {ok, Result} ->
+ [{ok, Result}];
+ {noresult, _} ->
+ [];
+ Err = {error, _} ->
+ [Err]
+ end;
+discover_dir(ProcessDir, File, symlink) ->
+ case filelib:is_dir(File) of
+ false ->
+ discover_dir(ProcessDir, File, file);
+ true ->
+ discover_real_symlink_dir(ProcessDir, File)
+ end.
+
+discover_real_symlink_dir(ProcessDir, File) ->
+ {ok, CurCwd} = file:get_cwd(),
+ ok = file:set_cwd(File),
+ {ok, ActualRealDir} = file:get_cwd(),
+ ok = file:set_cwd(CurCwd),
+ lists:prefix(iolist_to_list(filename:absname(ActualRealDir)),
+ iolist_to_list(filename:absname(File))),
+ case ProcessDir(File, directory) of
+ {ok, Result, true} ->
+ [{ok, Result} | recurse(ProcessDir, File)];
+ {noresult, true} ->
+ recurse(ProcessDir, File);
+ {ok, Result, _} ->
+ [{ok, Result}];
+ {noresult, _} ->
+ [];
+ Err = {error, _} ->
+ [Err]
+ end.
+
+recurse(ProcessDir, File) ->
+ case file:list_dir(File) of
+ {error, Reason} ->
+ {error, {accessing, File, Reason}};
+ {ok, List} ->
+ ec_plists:map(fun(LibDir) ->
+ discover_dir(ProcessDir, LibDir, ec_file:type(LibDir))
+ end, [filename:join([File, Dir]) || Dir <- List])
+ end.
+
+iolist_to_list(IoList) ->
+ erlang:binary_to_list(erlang:iolist_to_binary(IoList)).
diff --git a/src/rcl_rel_discovery.erl b/src/rcl_rel_discovery.erl
index 0f923a0..38d7913 100644
--- a/src/rcl_rel_discovery.erl
+++ b/src/rcl_rel_discovery.erl
@@ -54,31 +54,32 @@ format_error(ErrorDetails)
%%% Internal Functions
%%%===================================================================
resolve_rel_metadata(State, LibDirs, AppMeta) ->
- ReleaseMeta0 =
- lists:flatten(ec_plists:map(fun(LibDir) ->
- discover_dir([], LibDir, AppMeta)
- end, LibDirs)),
- Errors = [case El of
- {error, Ret} -> Ret;
- _ -> El
- end
- || El <- ReleaseMeta0,
- case El of
- {error, _} ->
- true;
- _ ->
- false
- end],
+ ReleaseMeta0 = lists:flatten(rcl_dscv_util:do(fun(LibDir, FileType) ->
+ discover_dir(LibDir,
+ AppMeta,
+ FileType)
+ end, LibDirs)),
+
+ Errors = [case El of
+ {error, Ret} -> Ret;
+ _ -> El
+ end
+ || El <- ReleaseMeta0,
+ case El of
+ {error, _} ->
+ true;
+ _ ->
+ false
+ end],
case Errors of
[] ->
- ReleaseMeta1 = lists:flatten(ReleaseMeta0),
rcl_log:debug(rcl_state:log(State),
fun() ->
["Resolved the following OTP Releases from the system: \n",
- [[rcl_release:format(1, Rel), "\n"] || Rel <- ReleaseMeta1]]
+ [[rcl_release:format(1, Rel), "\n"] || Rel <- ReleaseMeta0]]
end),
- {ok, ReleaseMeta1};
+ {ok, ReleaseMeta0};
_ ->
?RCL_ERROR(Errors)
end.
@@ -89,38 +90,26 @@ format_detail({accessing, File, eaccess}) ->
format_detail({accessing, File, Type}) ->
io_lib:format("error (~p) accessing file ~s", [Type, File]).
--spec discover_dir([file:name()], file:name(), [rcl_app_info:t()]) ->
- [rcl_release:t() | {error, Reason::term()}]
- | rcl_release:t()
- | {error, Reason::term()}.
-discover_dir(IgnoreDirs, File, AppMeta) ->
- 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, AppMeta)
- end,
- [filename:join([File, Dir]) || Dir <- List])
- end;
- false ->
- is_valid_release(File, AppMeta)
- end.
+-spec discover_dir(file:name(), [rcl_app_info:t()], directory | file) ->
+ {ok, rcl_release:t()}
+ | {error, Reason::term()}
+ | {noresult, false}.
+discover_dir(_File, _AppMeta, directory) ->
+ {noresult, true};
+discover_dir(File, AppMeta, file) ->
+ is_valid_release(File, AppMeta).
-spec is_valid_release(file:name(),
[rcl_app_info:t()]) ->
- rcl_release:t()
- | {error, Reason::term()}
- | [].
+ {ok, rcl_release:t()}
+ | {error, Reason::term()}
+ | {noresult, false}.
is_valid_release(File, AppMeta) ->
case lists:suffix(".rel", File) of
true ->
resolve_release(File, AppMeta);
false ->
- []
+ {noresult, false}
end.
resolve_release(RelFile, AppMeta) ->
@@ -141,7 +130,7 @@ build_release(RelName, RelVsn, ErtsVsn, Apps, AppMeta) ->
resolve_apps(Apps, AppMeta, Release, []).
resolve_apps([], _AppMeta, Release, Acc) ->
- rcl_release:application_details(Release, Acc);
+ {ok, rcl_release:application_details(Release, Acc)};
resolve_apps([AppInfo | Apps], AppMeta, Release, Acc) ->
AppName = erlang:element(1, AppInfo),
AppVsn = ec_semver:parse(erlang:element(2, AppInfo)),