diff options
Diffstat (limited to 'lib/sasl/src')
| -rw-r--r-- | lib/sasl/src/release_handler.erl | 50 | ||||
| -rw-r--r-- | lib/sasl/src/release_handler_1.erl | 93 |
2 files changed, 106 insertions, 37 deletions
diff --git a/lib/sasl/src/release_handler.erl b/lib/sasl/src/release_handler.erl index ab54b1d00b..4f01f5f559 100644 --- a/lib/sasl/src/release_handler.erl +++ b/lib/sasl/src/release_handler.erl @@ -25,8 +25,8 @@ -export([start_link/0, create_RELEASES/1, create_RELEASES/2, create_RELEASES/4, unpack_release/1, - check_install_release/1, install_release/1, install_release/2, - remove_release/1, + check_install_release/1, check_install_release/2, + install_release/1, install_release/2, remove_release/1, which_releases/0, make_permanent/1, reboot_old_release/1, set_unpacked/2, set_removed/1, install_file/2]). -export([upgrade_app/2, downgrade_app/2, downgrade_app/3, @@ -149,15 +149,35 @@ unpack_release(ReleaseName) -> %%----------------------------------------------------------------- %% Purpose: Checks the relup script for the specified version. %% The release must be unpacked. +%% Options = [purge] - all old code that can be soft purged +%% will be purged if all checks succeeds. This can be usefull +%% in order to reduce time needed in the following call to +%% install_release. %% Returns: {ok, FromVsn, Descr} | {error, Reason} -%% Reason = {already_installed, Vsn} | +%% Reason = {illegal_option, IllegalOpt} | +%% {already_installed, Vsn} | %% {bad_relup_file, RelFile} | %% {no_such_release, Vsn} | %% {no_such_from_vsn, Vsn} | %% exit_reason() %%----------------------------------------------------------------- check_install_release(Vsn) -> - call({check_install_release, Vsn}). + check_install_release(Vsn, []). + +check_install_release(Vsn, Opts) -> + case check_check_install_options(Opts, false) of + {ok,Purge} -> + call({check_install_release, Vsn, Purge}); + Error -> + Error + end. + +check_check_install_options([purge|Opts], _) -> + check_check_install_options(Opts, true); +check_check_install_options([Illegal|_],Purge) -> + {error,{illegal_option,Illegal}}; +check_check_install_options([],Purge) -> + {ok,Purge}. %%----------------------------------------------------------------- @@ -541,11 +561,12 @@ handle_call({unpack_release, ReleaseName}, _From, S) handle_call({unpack_release, _ReleaseName}, _From, S) -> {reply, {error, client_node}, S}; -handle_call({check_install_release, Vsn}, _From, S) -> +handle_call({check_install_release, Vsn, Purge}, _From, S) -> case catch do_check_install_release(S#state.rel_dir, Vsn, S#state.releases, - S#state.masters) of + S#state.masters, + Purge) of {ok, CurrentVsn, Descr} -> {reply, {ok, CurrentVsn, Descr}, S}; {error, Reason} -> @@ -855,7 +876,7 @@ check_path_response(Path, {ok, _Info}) -> check_path_response(Path, {error, _Reason}) -> throw({error, {no_such_directory, Path}}). -do_check_install_release(RelDir, Vsn, Releases, Masters) -> +do_check_install_release(RelDir, Vsn, Releases, Masters, Purge) -> case lists:keysearch(Vsn, #release.vsn, Releases) of {value, #release{status = current}} -> {error, {already_installed, Vsn}}; @@ -880,7 +901,20 @@ do_check_install_release(RelDir, Vsn, Releases, Masters) -> case get_rh_script(LatestRelease, Release, RelDir, Masters) of {ok, {CurrentVsn, Descr, Script}} -> case catch check_script(Script, Libs) of - ok -> + {ok,SoftPurgeMods} when Purge=:=true -> + %% Get modules with brutal_purge + %% instructions, but that can be + %% soft purged + {ok,BrutalPurgeMods} = + release_handler_1:check_old_processes( + Script,brutal_purge), + lists:foreach( + fun(Mod) -> + catch erlang:purge_module(Mod) + end, + SoftPurgeMods ++ BrutalPurgeMods), + {ok, CurrentVsn, Descr}; + {ok,_} -> {ok, CurrentVsn, Descr}; Else -> Else diff --git a/lib/sasl/src/release_handler_1.erl b/lib/sasl/src/release_handler_1.erl index ff62f847ac..ef95606bb5 100644 --- a/lib/sasl/src/release_handler_1.erl +++ b/lib/sasl/src/release_handler_1.erl @@ -19,7 +19,8 @@ -module(release_handler_1). %% External exports --export([eval_script/1, eval_script/5, check_script/2]). +-export([eval_script/1, eval_script/5, + check_script/2, check_old_processes/2]). -export([get_current_vsn/1]). %% exported because used in a test case -record(eval_state, {bins = [], stopped = [], suspended = [], apps = [], @@ -47,17 +48,20 @@ %%% This is a low-level release handler. %%%----------------------------------------------------------------- check_script(Script, LibDirs) -> - case catch check_old_processes(Script) of - ok -> + case catch check_old_processes(Script,soft_purge) of + {ok, PurgeMods} -> {Before, _After} = split_instructions(Script), case catch lists:foldl(fun(Instruction, EvalState1) -> eval(Instruction, EvalState1) end, #eval_state{libdirs = LibDirs}, Before) of - EvalState2 when is_record(EvalState2, eval_state) -> ok; - {error, Error} -> {error, Error}; - Other -> {error, Other} + EvalState2 when is_record(EvalState2, eval_state) -> + {ok,PurgeMods}; + {error, Error} -> + {error, Error}; + Other -> + {error, Other} end; {error, Mod} -> {error, {old_processes, Mod}} @@ -68,8 +72,8 @@ eval_script(Script) -> eval_script(Script, [], [], [], []). eval_script(Script, Apps, LibDirs, NewLibs, Opts) -> - case catch check_old_processes(Script) of - ok -> + case catch check_old_processes(Script,soft_purge) of + {ok,_} -> {Before, After} = split_instructions(Script), case catch lists:foldl(fun(Instruction, EvalState1) -> eval(Instruction, EvalState1) @@ -112,32 +116,63 @@ split_instructions([], Before) -> {[], lists:reverse(Before)}. %%----------------------------------------------------------------- -%% Func: check_old_processes/1 +%% Func: check_old_processes/2 %% Args: Script = [instruction()] +%% PrePurgeMethod = soft_purge | brutal_purge %% Purpose: Check if there is any process that runs an old version -%% of a module that should be soft_purged, (i.e. not purged -%% at all if there is any such process). Returns {error, Mod} -%% if so, ok otherwise. -%% Returns: ok | {error, Mod} +%% of a module that should be purged according to PrePurgeMethod. +%% Returns a list of modules that can be soft_purged. +%% +%% If PrePurgeMethod == soft_purge, the function will succeed +%% only if there is no process running old code of any of the +%% modules. Else it will throw {error,Mod}, where Mod is the +%% first module found that can not be soft_purged. +%% +%% If PrePurgeMethod == brutal_purge, the function will +%% always succeed and return a list of all modules that are +%% specified in the script with PrePurgeMethod brutal_purge, +%% but that can be soft_purged. +%% +%% Returns: {ok,PurgeMods} | {error, Mod} +%% PurgeMods = [Mod] %% Mod = atom() %%----------------------------------------------------------------- -check_old_processes(Script) -> - lists:foreach(fun({load, {Mod, soft_purge, _PostPurgeMethod}}) -> - check_old_code(Mod); - ({remove, {Mod, soft_purge, _PostPurgeMethod}}) -> - check_old_code(Mod); - (_) -> ok - end, - Script). +check_old_processes(Script,PrePurgeMethod) -> + Procs = erlang:processes(), + {ok,lists:flatmap( + fun({load, {Mod, PPM, _PostPurgeMethod}}) when PPM==PrePurgeMethod -> + check_old_code(Mod,Procs,PrePurgeMethod); + ({remove, {Mod, PPM, _PostPurgeMethod}}) when PPM==PrePurgeMethod -> + check_old_code(Mod,Procs,PrePurgeMethod); + (_) -> [] + end, + Script)}. + +check_old_code(Mod,Procs,PrePurgeMethod) -> + case erlang:check_old_code(Mod) of + true when PrePurgeMethod==soft_purge -> + do_check_old_code(Mod,Procs); + true when PrePurgeMethod==brutal_purge -> + case catch do_check_old_code(Mod,Procs) of + {error,Mod} -> []; + R -> R + end; + false -> + [] + end. + + +do_check_old_code(Mod,Procs) -> + lists:foreach( + fun(Pid) -> + case erlang:check_process_code(Pid, Mod) of + false -> ok; + true -> throw({error, Mod}) + end + end, + Procs), + [Mod]. -check_old_code(Mod) -> - lists:foreach(fun(Pid) -> - case erlang:check_process_code(Pid, Mod) of - false -> ok; - true -> throw({error, Mod}) - end - end, - erlang:processes()). %%----------------------------------------------------------------- %% An unpurged module is a module for which there exist an old |