diff options
Diffstat (limited to 'lib/sasl/src/release_handler.erl')
| -rw-r--r-- | lib/sasl/src/release_handler.erl | 460 |
1 files changed, 373 insertions, 87 deletions
diff --git a/lib/sasl/src/release_handler.erl b/lib/sasl/src/release_handler.erl index bc08f94dff..5efd932c92 100644 --- a/lib/sasl/src/release_handler.erl +++ b/lib/sasl/src/release_handler.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -26,8 +26,9 @@ create_RELEASES/1, create_RELEASES/2, create_RELEASES/4, unpack_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, + install_release/1, install_release/2, new_emulator_upgrade/2, + remove_release/1, which_releases/0, which_releases/1, + 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, upgrade_script/2, downgrade_script/3, @@ -40,7 +41,7 @@ %% Internal exports, a client release_handler may call this functions. -export([do_write_release/3, do_copy_file/2, do_copy_files/2, do_copy_files/1, do_rename_files/1, do_remove_files/1, - do_write_file/2, do_ensure_RELEASES/1]). + remove_file/1, do_write_file/2, do_ensure_RELEASES/1]). -record(state, {unpurged = [], root, @@ -61,10 +62,11 @@ %% remove - %% current make_permanent permanent %% install other old +%% restart node unpacked %% remove - %% permanent make other permanent old %% install permanent -%% old reboot permanen +%% old reboot_old permanent %% install current %% remove - %%----------------------------------------------------------------- @@ -74,6 +76,14 @@ -define(timeout, 10000). %%----------------------------------------------------------------- +%% The version set on the temporary release that will be used when the +%% emulator is upgraded. +-define(tmp_vsn(__BaseVsn__), "__new_emulator__"++__BaseVsn__). + + + + +%%----------------------------------------------------------------- %% Assumes the following file structure: %% root --- lib --- Appl-Vsn1 --- <src> %% | | |- ebin @@ -183,11 +193,15 @@ check_check_install_options([],Purge) -> %%----------------------------------------------------------------- %% Purpose: Executes the relup script for the specified version. %% The release must be unpacked. -%% Returns: {ok, FromVsn, Descr} | {error, Reason} +%% Returns: {ok, FromVsn, Descr} | +%% {continue_after_restart, FromVsn, Descr} | +%% {error, Reason} %% Reason = {already_installed, Vsn} | %% {bad_relup_file, RelFile} | %% {no_such_release, Vsn} | %% {no_such_from_vsn, Vsn} | +%% {could_not_create_hybrid_boot,Why} | +%% {missing_base_app,Vsn,App} | %% {illegal_option, Opt}} | %% exit_reason() %%----------------------------------------------------------------- @@ -230,6 +244,21 @@ check_timeout(Int) when is_integer(Int), Int > 0 -> true; check_timeout(_Else) -> false. %%----------------------------------------------------------------- +%% Purpose: Called by boot script after emulator is restarted due to +%% new erts version. +%% Returns: Same as install_release/2 +%% If this crashes, the emulator restart will fail +%% (since the function is called from the boot script) +%% and there will be a rollback. +%%----------------------------------------------------------------- +new_emulator_upgrade(Vsn, Opts) -> + Result = call({install_release, Vsn, reboot, Opts}), + error_logger:info_msg( + "~p:install_release(~p,~p) completed after node restart " + "with new emulator version~nResult: ~p~n",[?MODULE,Vsn,Opts,Result]), + Result. + +%%----------------------------------------------------------------- %% Purpose: Makes the specified release version be the one that is %% used when the system starts (or restarts). %% The release must be installed (not unpacked). @@ -305,6 +334,14 @@ which_releases() -> call(which_releases). %%----------------------------------------------------------------- +%% Returns: [{Name, Vsn, [LibName], Status}] +%% Status = unpacked | current | permanent | old +%%----------------------------------------------------------------- +which_releases(Status) -> + Releases = which_releases(), + get_releases_with_status(Releases, Status, []). + +%%----------------------------------------------------------------- %% check_script(Script, LibDirs) -> ok | {error, Reason} %%----------------------------------------------------------------- check_script(Script, LibDirs) -> @@ -313,7 +350,7 @@ check_script(Script, LibDirs) -> %%----------------------------------------------------------------- %% eval_script(Script, Apps, LibDirs, NewLibs, Opts) -> %% {ok, UnPurged} | -%% restart_new_emulator | +%% restart_emulator | %% {error, Error} %% {'EXIT', Reason} %% If sync_nodes is present, the calling process must have called @@ -350,7 +387,7 @@ create_RELEASES(Root, RelDir, RelFile, LibDirs) -> %%----------------------------------------------------------------- %% Func: upgrade_app(App, Dir) -> {ok, Unpurged} -%% | restart_new_emulator +%% | restart_emulator %% | {error, Error} %% Types: %% App = atom() @@ -370,7 +407,7 @@ upgrade_app(App, NewDir) -> %%----------------------------------------------------------------- %% Func: downgrade_app(App, Dir) %% downgrade_app(App, Vsn, Dir) -> {ok, Unpurged} -%% | restart_new_emulator +%% | restart_emulator %% | {error, Error} %% Types: %% App = atom() @@ -578,7 +615,7 @@ handle_call({check_install_release, Vsn, Purge}, _From, S) -> handle_call({install_release, Vsn, ErrorAction, Opts}, From, S) -> NS = resend_sync_nodes(S), case catch do_install_release(S, Vsn, Opts) of - {ok, NewReleases, CurrentVsn, Descr} -> + {ok, NewReleases, [], CurrentVsn, Descr} -> {reply, {ok, CurrentVsn, Descr}, NS#state{releases=NewReleases}}; {ok, NewReleases, Unpurged, CurrentVsn, Descr} -> Timer = @@ -593,10 +630,14 @@ handle_call({install_release, Vsn, ErrorAction, Opts}, From, S) -> {reply, {ok, CurrentVsn, Descr}, NewS}; {error, Reason} -> {reply, {error, Reason}, NS}; - {restart_new_emulator, CurrentVsn, Descr} -> + {restart_emulator, CurrentVsn, Descr} -> gen_server:reply(From, {ok, CurrentVsn, Descr}), init:reboot(), {noreply, NS}; + {restart_new_emulator, CurrentVsn, Descr} -> + gen_server:reply(From, {continue_after_restart, CurrentVsn, Descr}), + init:reboot(), + {noreply, NS}; {'EXIT', Reason} -> io:format("release_handler:" "install_release(Vsn=~p Opts=~p) failed, " @@ -801,8 +842,13 @@ do_unpack_release(Root, RelDir, ReleaseName, Releases) -> extract_tar(Root, Tar), NewReleases = [Release#release{status = unpacked} | Releases], write_releases(RelDir, NewReleases, false), + + %% Keeping this for backwards compatibility reasons with older + %% systools:make_tar, where there is no copy of the .rel file in + %% the releases/<vsn> dir. See OTP-9746. Dir = filename:join([RelDir, Vsn]), copy_file(RelFile, Dir, false), + {ok, NewReleases, Vsn}. %% Note that this function is not executed by a client @@ -941,7 +987,38 @@ do_install_release(#state{start_prg = StartPrg, {value, Release} -> LatestRelease = get_latest_release(Releases), case get_rh_script(LatestRelease, Release, RelDir, Masters) of + {ok, {_CurrentVsn, _Descr, [restart_new_emulator|_Script]}} + when Static == true -> + throw(static_emulator); + {ok, {CurrentVsn, Descr, [restart_new_emulator|_Script]}} -> + %% This will only happen if the upgrade includes + %% an emulator upgrade (and it is not a downgrade) + %% - then the new emulator must be started before + %% new code can be loaded. + %% Create a temporary release which includes new + %% emulator, kernel, stdlib and sasl - and old + %% versions of other applications. + {TmpVsn,TmpRelease} = + new_emulator_make_tmp_release(LatestRelease,Release, + RelDir,Opts,Masters), + NReleases = [TmpRelease|Releases], + + %% Then uppgrade to the temporary release. + %% The rest of the upgrade will continue after the restart + prepare_restart_new_emulator(StartPrg, RootDir, + RelDir, TmpVsn, TmpRelease, + NReleases, Masters), + {restart_new_emulator, CurrentVsn, Descr}; {ok, {CurrentVsn, Descr, Script}} -> + %% In case there has been an emulator upgrade, + %% remove the temporary release + NReleases = + new_emulator_rm_tmp_release( + LatestRelease#release.vsn, + LatestRelease#release.erts_vsn, + Vsn,RelDir,Releases,Masters), + + %% Then execute the relup script mon_nodes(true), EnvBefore = application_controller:prep_config_change(), Apps = change_appl_data(RelDir, Release, Masters), @@ -949,31 +1026,19 @@ do_install_release(#state{start_prg = StartPrg, NewLibs = get_new_libs(LatestRelease#release.libs, Release#release.libs), case eval_script(Script, Apps, LibDirs, NewLibs, Opts) of - {ok, []} -> - application_controller:config_change(EnvBefore), - mon_nodes(false), - NewReleases = set_status(Vsn, current, Releases), - {ok, NewReleases, CurrentVsn, Descr}; {ok, Unpurged} -> application_controller:config_change(EnvBefore), mon_nodes(false), - NewReleases = set_status(Vsn, current, Releases), - {ok, NewReleases, Unpurged, CurrentVsn, Descr}; - restart_new_emulator when Static == true -> + NReleases1 = set_status(Vsn, current, NReleases), + {ok, NReleases1, Unpurged, CurrentVsn, Descr}; + restart_emulator when Static == true -> throw(static_emulator); - restart_new_emulator -> + restart_emulator -> mon_nodes(false), - {value, PermanentRelease} = - lists:keysearch(permanent, #release.status, - Releases), - NReleases = set_status(Vsn, current, Releases), - NReleases2 = set_status(Vsn,tmp_current,NReleases), - write_releases(RelDir, NReleases2, Masters), prepare_restart_new_emulator(StartPrg, RootDir, - RelDir, Release, - PermanentRelease, - Masters), - {restart_new_emulator, CurrentVsn, Descr}; + RelDir, Vsn, Release, + NReleases, Masters), + {restart_emulator, CurrentVsn, Descr}; Else -> application_controller:config_change(EnvBefore), mon_nodes(false), @@ -986,6 +1051,158 @@ do_install_release(#state{start_prg = StartPrg, {error, {no_such_release, Vsn}} end. +new_emulator_make_tmp_release(CurrentRelease,ToRelease,RelDir,Opts,Masters) -> + CurrentVsn = CurrentRelease#release.vsn, + ToVsn = ToRelease#release.vsn, + TmpVsn = ?tmp_vsn(CurrentVsn), + case get_base_libs(ToRelease#release.libs) of + {ok,{Kernel,Stdlib,Sasl}=BaseLibs,_} -> + case get_base_libs(ToRelease#release.libs) of + {ok,_,RestLibs} -> + TmpErtsVsn = ToRelease#release.erts_vsn, + TmpLibs = [Kernel,Stdlib,Sasl|RestLibs], + TmpRelease = CurrentRelease#release{vsn=TmpVsn, + erts_vsn=TmpErtsVsn, + libs = TmpLibs, + status = unpacked}, + new_emulator_make_hybrid_boot(CurrentVsn,ToVsn,TmpVsn, + BaseLibs,RelDir,Opts,Masters), + new_emulator_make_hybrid_config(CurrentVsn,ToVsn,TmpVsn, + RelDir,Masters), + {TmpVsn,TmpRelease}; + {error,{missing,Missing}} -> + throw({error,{missing_base_app,CurrentVsn,Missing}}) + end; + {error,{missing,Missing}} -> + throw({error,{missing_base_app,ToVsn,Missing}}) + end. + +%% Get kernel, stdlib and sasl libs, +%% and also return the rest of the libs as a list. +%% Return error if any of kernel, stdlib or sasl does not exist. +get_base_libs(Libs) -> + get_base_libs(Libs,undefined,undefined,undefined,[]). +get_base_libs([{kernel,_,_}=Kernel|Libs],undefined,Stdlib,Sasl,Rest) -> + get_base_libs(Libs,Kernel,Stdlib,Sasl,Rest); +get_base_libs([{stdlib,_,_}=Stdlib|Libs],Kernel,undefined,Sasl,Rest) -> + get_base_libs(Libs,Kernel,Stdlib,Sasl,Rest); +get_base_libs([{sasl,_,_}=Sasl|Libs],Kernel,Stdlib,undefined,Rest) -> + get_base_libs(Libs,Kernel,Stdlib,Sasl,Rest); +get_base_libs([Lib|Libs],Kernel,Stdlib,Sasl,Rest) -> + get_base_libs(Libs,Kernel,Stdlib,Sasl,[Lib|Rest]); +get_base_libs([],undefined,_Stdlib,_Sasl,_Rest) -> + {error,{missing,kernel}}; +get_base_libs([],_Kernel,undefined,_Sasl,_Rest) -> + {error,{missing,stdlib}}; +get_base_libs([],_Kernel,_Stdlib,undefined,_Rest) -> + {error,{missing,sasl}}; +get_base_libs([],Kernel,Stdlib,Sasl,Rest) -> + {ok,{Kernel,Stdlib,Sasl},lists:reverse(Rest)}. + +new_emulator_make_hybrid_boot(CurrentVsn,ToVsn,TmpVsn,BaseLibs,RelDir,Opts,Masters) -> + FromBootFile = filename:join([RelDir,CurrentVsn,"start.boot"]), + ToBootFile = filename:join([RelDir,ToVsn,"start.boot"]), + TmpBootFile = filename:join([RelDir,TmpVsn,"start.boot"]), + ensure_dir(TmpBootFile,Masters), + Args = [ToVsn,Opts], + {ok,FromBoot} = read_file(FromBootFile,Masters), + {ok,ToBoot} = read_file(ToBootFile,Masters), + {{_,_,KernelPath},{_,_,SaslPath},{_,_,StdlibPath}} = BaseLibs, + Paths = {filename:join(KernelPath,"ebin"), + filename:join(StdlibPath,"ebin"), + filename:join(SaslPath,"ebin")}, + case systools_make:make_hybrid_boot(TmpVsn,FromBoot,ToBoot,Paths,Args) of + {ok,TmpBoot} -> + write_file(TmpBootFile,TmpBoot,Masters); + {error,Reason} -> + throw({error,{could_not_create_hybrid_boot,Reason}}) + end. + +new_emulator_make_hybrid_config(CurrentVsn,ToVsn,TmpVsn,RelDir,Masters) -> + FromFile = filename:join([RelDir,CurrentVsn,"sys.config"]), + ToFile = filename:join([RelDir,ToVsn,"sys.config"]), + TmpFile = filename:join([RelDir,TmpVsn,"sys.config"]), + + FromConfig = + case consult(FromFile,Masters) of + {ok,[FC]} -> + FC; + {error,Error1} -> + io:format("Warning: ~p can not read ~p: ~p~n", + [?MODULE,FromFile,Error1]), + [] + end, + + [Kernel,Stdlib,Sasl] = + case consult(ToFile,Masters) of + {ok,[ToConfig]} -> + [lists:keyfind(App,1,ToConfig) || App <- [kernel,stdlib,sasl]]; + {error,Error2} -> + io:format("Warning: ~p can not read ~p: ~p~n", + [?MODULE,ToFile,Error2]), + [false,false,false] + end, + + Config1 = replace_config(kernel,FromConfig,Kernel), + Config2 = replace_config(stdlib,Config1,Stdlib), + Config3 = replace_config(sasl,Config2,Sasl), + + ConfigStr = io_lib:format("~p.~n",[Config3]), + write_file(TmpFile,ConfigStr,Masters). + +%% Take the configuration for application App from the new config and +%% insert in the old config. +%% If no entry exists in the new config, then delete the entry (if it exists) +%% from the old config. +%% If entry exists in the new config, but not in the old config, then +%% add the entry. +replace_config(App,Config,false) -> + lists:keydelete(App,1,Config); +replace_config(App,Config,AppConfig) -> + lists:keystore(App,1,Config,AppConfig). + +%% Remove all files related to the temporary release +new_emulator_rm_tmp_release(?tmp_vsn(_)=TmpVsn,EVsn,NewVsn, + RelDir,Releases,Masters) -> + case os:type() of + {win32, nt} -> + rename_tmp_service(EVsn,TmpVsn,NewVsn); + _ -> + ok + end, + remove_dir(filename:join(RelDir,TmpVsn),Masters), + lists:keydelete(TmpVsn,#release.vsn,Releases); +new_emulator_rm_tmp_release(_,_,_,_,Releases,_) -> + Releases. + +%% Rename the tempoarary service (for erts ugprade) to the real ToVsn +rename_tmp_service(EVsn,TmpVsn,NewVsn) -> + FromName = hd(string:tokens(atom_to_list(node()),"@")) ++ "_" ++ TmpVsn, + ToName = hd(string:tokens(atom_to_list(node()),"@")) ++ "_" ++ NewVsn, + case erlsrv:get_service(EVsn,ToName) of + {error, _Error} -> + ok; + _Data -> + erlsrv:remove_service(ToName) + end, + rename_service(EVsn,FromName,ToName). + + +%% Rename a service and check that it succeeded +rename_service(EVsn,FromName,ToName) -> + case erlsrv:rename_service(EVsn,FromName,ToName) of + {ok,_} -> + case erlsrv:get_service(EVsn,ToName) of + {error,Error1} -> + throw({error,Error1}); + _Data2 -> + ok + end; + Error2 -> + throw({error,{service_rename_failed, Error2}}) + end. + + %%% This code chunk updates the services in one of two ways, %%% Either the emulator is restarted, in which case the old service %%% is to be removed and the new enabled, or the emulator is NOT restarted @@ -1002,26 +1219,16 @@ do_make_services_permanent(PermanentVsn,Vsn, PermanentEVsn, EVsn) -> %% rename. case os:getenv("ERLSRV_SERVICE_NAME") == PermName of true -> - case erlsrv:rename_service(EVsn,PermName,Name) of - {ok,_} -> - case erlsrv:get_service(EVsn,Name) of - {error,Error2} -> - throw({error,Error2}); - _Data2 -> - %% The interfaces for doing this are - %% NOT published and may be subject to - %% change. Do NOT do this anywhere else! - - os:putenv("ERLSRV_SERVICE_NAME", Name), - - %% Restart heart port program, this - %% function is only to be used here. - heart:cycle(), - ok - end; - Error3 -> - throw({error,{service_rename_failed, Error3}}) - end; + rename_service(EVsn,PermName,Name), + %% The interfaces for doing this are + %% NOT published and may be subject to + %% change. Do NOT do this anywhere else! + + os:putenv("ERLSRV_SERVICE_NAME", Name), + + %% Restart heart port program, this + %% function is only to be used here. + heart:cycle(); false -> throw({error,service_name_missmatch}) end; @@ -1260,21 +1467,31 @@ do_set_removed(RelDir, Vsn, Releases, Masters) -> %% corresponding relup instructions, we check if it's possible to %% downgrade from CurrentVsn to ToVsn. %%----------------------------------------------------------------- +get_rh_script(#release{vsn = ?tmp_vsn(CurrentVsn)}, + #release{vsn = ToVsn}, + RelDir, + Masters) -> + {ok,{Vsn,Descr,[restart_new_emulator|Script]}} = + do_get_rh_script(CurrentVsn,ToVsn,RelDir,Masters), + {ok,{Vsn,Descr,Script}}; get_rh_script(#release{vsn = CurrentVsn}, - #release{vsn = Vsn}, + #release{vsn = ToVsn}, RelDir, Masters) -> - Relup = filename:join([RelDir, Vsn, "relup"]), - case try_upgrade(Vsn, CurrentVsn, Relup, Masters) of + do_get_rh_script(CurrentVsn,ToVsn,RelDir,Masters). + +do_get_rh_script(CurrentVsn, ToVsn, RelDir, Masters) -> + Relup = filename:join([RelDir, ToVsn, "relup"]), + case try_upgrade(ToVsn, CurrentVsn, Relup, Masters) of {ok, RhScript} -> {ok, RhScript}; _ -> Relup2 = filename:join([RelDir, CurrentVsn,"relup"]), - case try_downgrade(Vsn, CurrentVsn, Relup2, Masters) of + case try_downgrade(ToVsn, CurrentVsn, Relup2, Masters) of {ok, RhScript} -> {ok, RhScript}; _ -> - throw({error, {no_matching_relup, Vsn, CurrentVsn}}) + throw({error, {no_matching_relup, ToVsn, CurrentVsn}}) end end. @@ -1355,7 +1572,7 @@ memlib(_Lib, []) -> false. %% recursively remove file or directory remove_file(File) -> - case file:read_file_info(File) of + case file:read_link_info(File) of {ok, Info} when Info#file_info.type==directory -> case file:list_dir(File) of {ok, Files} -> @@ -1487,6 +1704,15 @@ prepare_restart_nt(#release{erts_vsn = EVsn, vsn = Vsn}, %% restart is performed by calling init:reboot() higher up. %%----------------------------------------------------------------- prepare_restart_new_emulator(StartPrg, RootDir, RelDir, + Vsn, Release, Releases, Masters) -> + {value, PRelease} = lists:keysearch(permanent, #release.status,Releases), + NReleases1 = set_status(Vsn, current, Releases), + NReleases2 = set_status(Vsn,tmp_current,NReleases1), + write_releases(RelDir, NReleases2, Masters), + prepare_restart_new_emulator(StartPrg, RootDir, RelDir, + Release, PRelease, Masters). + +prepare_restart_new_emulator(StartPrg, RootDir, RelDir, Release, PRelease, Masters) -> #release{erts_vsn = EVsn, vsn = Vsn} = Release, Data = EVsn ++ " " ++ Vsn, @@ -1512,19 +1738,10 @@ check_start_prg({do_check, StartPrg}, Masters) -> check_start_prg({_, StartPrg}, _) -> StartPrg. -write_new_start_erl(Data, RelDir, false) -> - DataFile = filename:join([RelDir, "new_start_erl.data"]), - case do_write_file(DataFile, Data) of - ok -> DataFile; - Error -> throw(Error) - end; write_new_start_erl(Data, RelDir, Masters) -> DataFile = filename:join([RelDir, "new_start_erl.data"]), - case at_all_masters(Masters, ?MODULE, do_write_file, - [DataFile, Data]) of - ok -> DataFile; - Error -> throw(Error) - end. + write_file(DataFile, Data, Masters), + DataFile. %%----------------------------------------------------------------- %% When a new emulator shall be restarted, the current release @@ -1538,27 +1755,41 @@ write_new_start_erl(Data, RelDir, Masters) -> %% If the release is made permanent, this is written to disk. %%----------------------------------------------------------------- transform_release(ReleaseDir, Releases, Masters) -> - F = fun(Release) when Release#release.status == tmp_current -> - Release#release{status = unpacked}; - (Release) -> Release - end, - case lists:map(F, Releases) of - Releases -> - Releases; - DReleases -> + case init:script_id() of + {Name, ?tmp_vsn(_)=TmpVsn} -> + %% This is was a reboot due to a new emulator version. The + %% current release is a temporary internal release, which + %% must be removed. It is the "real new release" that is + %% set to unpacked on disk and current in memory. + DReleases = lists:keydelete(TmpVsn,#release.vsn,Releases), write_releases(ReleaseDir, DReleases, Masters), - F1 = fun(Release) when Release#release.status == tmp_current -> - case init:script_id() of - {_Name, Vsn} when Release#release.vsn == Vsn -> - Release#release{status = current}; - _ -> - Release#release{status = unpacked} - end; - (Release) -> Release - end, - lists:map(F1, Releases) + set_current({Name,TmpVsn},Releases); + ScriptId -> + F = fun(Release) when Release#release.status == tmp_current -> + Release#release{status = unpacked}; + (Release) -> Release + end, + case lists:map(F, Releases) of + Releases -> + Releases; + DReleases -> + write_releases(ReleaseDir, DReleases, Masters), + set_current(ScriptId, Releases) + end end. +set_current(ScriptId, Releases) -> + F1 = fun(Release) when Release#release.status == tmp_current -> + case ScriptId of + {_Name,Vsn} when Release#release.vsn == Vsn -> + Release#release{status = current}; + _ -> + Release#release{status = unpacked} + end; + (Release) -> Release + end, + lists:map(F1, Releases). + %%----------------------------------------------------------------- %% Functions handling files, RELEASES, start_erl.data etc. %% This functions consider if the release_handler is a client and @@ -1617,12 +1848,25 @@ extract_tar(Root, Tar) -> throw({error, {cannot_extract_file, Name, Reason}}) end. -write_releases(Dir, NewReleases, false) -> +write_releases(Dir, Releases, Masters) -> + %% We must never write 'current' to disk, since this will confuse + %% us after a node restart - since we would then have a permanent + %% release running, but state set to current for a non-running + %% release. + NewReleases = lists:zf(fun(Release) when Release#release.status == current -> + {true, Release#release{status = unpacked}}; + (_) -> + true + end, Releases), + write_releases_1(Dir, NewReleases, Masters). + + +write_releases_1(Dir, NewReleases, false) -> case do_write_release(Dir, "RELEASES", NewReleases) of ok -> ok; Error -> throw(Error) end; -write_releases(Dir, NewReleases, Masters) -> +write_releases_1(Dir, NewReleases, Masters) -> all_masters(Masters), write_releases_m(Dir, NewReleases, Masters). @@ -1844,6 +2088,37 @@ read_file(File, false) -> read_file(File, Masters) -> read_master(Masters, File). +write_file(File, Data, false) -> + case file:write_file(File, Data) of + ok -> ok; + Error -> throw(Error) + end; +write_file(File, Data, Masters) -> + case at_all_masters(Masters, file, write_file, [File, Data]) of + ok -> ok; + Error -> throw(Error) + end. + +ensure_dir(File, false) -> + case filelib:ensure_dir(File) of + ok -> ok; + Error -> throw(Error) + end; +ensure_dir(File, Masters) -> + case at_all_masters(Masters,filelib,ensure_dir,[File]) of + ok -> ok; + Error -> throw(Error) + end. + +remove_dir(Dir, false) -> + remove_file(Dir); +remove_dir(Dir, Masters) -> + case at_all_masters(Masters,?MODULE,remove_file,[Dir]) of + ok -> ok; + Error -> throw(Error) + end. + + %% Ignore status of each delete ! remove_files(Master, Files, Masters) -> takewhile(Master, Masters, ?MODULE, do_remove_files, [Files]). @@ -2010,3 +2285,14 @@ get_new_libs([{App,Vsn,_LibDir}|CurrentLibs], NewLibs) -> end; get_new_libs([],_) -> []. + +%%----------------------------------------------------------------- +%% Return a list of releases witch a specific status +%%----------------------------------------------------------------- +get_releases_with_status([], _, Acc) -> + Acc; +get_releases_with_status([ {_, _, _, ReleaseStatus } = Head | Tail], + Status, Acc) when ReleaseStatus == Status -> + get_releases_with_status(Tail, Status, [Head | Acc]); +get_releases_with_status([_ | Tail], Status, Acc) -> + get_releases_with_status(Tail, Status, Acc). |