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diff --git a/1.1.x/src/couchdb/couch_server.erl b/1.1.x/src/couchdb/couch_server.erl
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--- a/1.1.x/src/couchdb/couch_server.erl
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-% Licensed 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.
-
--module(couch_server).
--behaviour(gen_server).
-
--export([open/2,create/2,delete/2,all_databases/0,get_version/0]).
--export([init/1, handle_call/3,sup_start_link/0]).
--export([handle_cast/2,code_change/3,handle_info/2,terminate/2]).
--export([dev_start/0,is_admin/2,has_admins/0,get_stats/0]).
-
--include("couch_db.hrl").
-
--record(server,{
- root_dir = [],
- dbname_regexp,
- max_dbs_open=100,
- dbs_open=0,
- start_time=""
- }).
-
-dev_start() ->
- couch:stop(),
- up_to_date = make:all([load, debug_info]),
- couch:start().
-
-get_version() ->
- Apps = application:loaded_applications(),
- case lists:keysearch(couch, 1, Apps) of
- {value, {_, _, Vsn}} ->
- Vsn;
- false ->
- "0.0.0"
- end.
-
-get_stats() ->
- {ok, #server{start_time=Time,dbs_open=Open}} =
- gen_server:call(couch_server, get_server),
- [{start_time, ?l2b(Time)}, {dbs_open, Open}].
-
-sup_start_link() ->
- gen_server:start_link({local, couch_server}, couch_server, [], []).
-
-open(DbName, Options) ->
- case gen_server:call(couch_server, {open, DbName, Options}, infinity) of
- {ok, Db} ->
- Ctx = couch_util:get_value(user_ctx, Options, #user_ctx{}),
- {ok, Db#db{user_ctx=Ctx}};
- Error ->
- Error
- end.
-
-create(DbName, Options) ->
- case gen_server:call(couch_server, {create, DbName, Options}, infinity) of
- {ok, Db} ->
- Ctx = couch_util:get_value(user_ctx, Options, #user_ctx{}),
- {ok, Db#db{user_ctx=Ctx}};
- Error ->
- Error
- end.
-
-delete(DbName, Options) ->
- gen_server:call(couch_server, {delete, DbName, Options}, infinity).
-
-check_dbname(#server{dbname_regexp=RegExp}, DbName) ->
- case re:run(DbName, RegExp, [{capture, none}]) of
- nomatch ->
- case DbName of
- "_users" -> ok;
- "_replicator" -> ok;
- _Else ->
- {error, illegal_database_name}
- end;
- match ->
- ok
- end.
-
-is_admin(User, ClearPwd) ->
- case couch_config:get("admins", User) of
- "-hashed-" ++ HashedPwdAndSalt ->
- [HashedPwd, Salt] = string:tokens(HashedPwdAndSalt, ","),
- couch_util:to_hex(crypto:sha(ClearPwd ++ Salt)) == HashedPwd;
- _Else ->
- false
- end.
-
-has_admins() ->
- couch_config:get("admins") /= [].
-
-get_full_filename(Server, DbName) ->
- filename:join([Server#server.root_dir, "./" ++ DbName ++ ".couch"]).
-
-hash_admin_passwords() ->
- hash_admin_passwords(true).
-
-hash_admin_passwords(Persist) ->
- lists:foreach(
- fun({_User, "-hashed-" ++ _}) ->
- ok; % already hashed
- ({User, ClearPassword}) ->
- Salt = ?b2l(couch_uuids:random()),
- Hashed = couch_util:to_hex(crypto:sha(ClearPassword ++ Salt)),
- couch_config:set("admins",
- User, "-hashed-" ++ Hashed ++ "," ++ Salt, Persist)
- end, couch_config:get("admins")).
-
-init([]) ->
- % read config and register for configuration changes
-
- % just stop if one of the config settings change. couch_server_sup
- % will restart us and then we will pick up the new settings.
-
- RootDir = couch_config:get("couchdb", "database_dir", "."),
- MaxDbsOpen = list_to_integer(
- couch_config:get("couchdb", "max_dbs_open")),
- Self = self(),
- ok = couch_config:register(
- fun("couchdb", "database_dir") ->
- exit(Self, config_change)
- end),
- ok = couch_config:register(
- fun("couchdb", "max_dbs_open", Max) ->
- gen_server:call(couch_server,
- {set_max_dbs_open, list_to_integer(Max)})
- end),
- ok = couch_file:init_delete_dir(RootDir),
- hash_admin_passwords(),
- ok = couch_config:register(
- fun("admins", _Key, _Value, Persist) ->
- % spawn here so couch_config doesn't try to call itself
- spawn(fun() -> hash_admin_passwords(Persist) end)
- end, false),
- {ok, RegExp} = re:compile("^[a-z][a-z0-9\\_\\$()\\+\\-\\/]*$"),
- ets:new(couch_dbs_by_name, [set, private, named_table]),
- ets:new(couch_dbs_by_pid, [set, private, named_table]),
- ets:new(couch_dbs_by_lru, [ordered_set, private, named_table]),
- ets:new(couch_sys_dbs, [set, private, named_table]),
- process_flag(trap_exit, true),
- {ok, #server{root_dir=RootDir,
- dbname_regexp=RegExp,
- max_dbs_open=MaxDbsOpen,
- start_time=httpd_util:rfc1123_date()}}.
-
-terminate(_Reason, _Srv) ->
- [couch_util:shutdown_sync(Pid) || {_, {Pid, _LruTime}} <-
- ets:tab2list(couch_dbs_by_name)],
- ok.
-
-all_databases() ->
- {ok, #server{root_dir=Root}} = gen_server:call(couch_server, get_server),
- NormRoot = couch_util:normpath(Root),
- Filenames =
- filelib:fold_files(Root, "^[a-z0-9\\_\\$()\\+\\-]*[\\.]couch$", true,
- fun(Filename, AccIn) ->
- NormFilename = couch_util:normpath(Filename),
- case NormFilename -- NormRoot of
- [$/ | RelativeFilename] -> ok;
- RelativeFilename -> ok
- end,
- [list_to_binary(filename:rootname(RelativeFilename, ".couch")) | AccIn]
- end, []),
- {ok, lists:usort(Filenames)}.
-
-
-maybe_close_lru_db(#server{dbs_open=NumOpen, max_dbs_open=MaxOpen}=Server)
- when NumOpen < MaxOpen ->
- {ok, Server};
-maybe_close_lru_db(#server{dbs_open=NumOpen}=Server) ->
- % must free up the lru db.
- case try_close_lru(now()) of
- ok ->
- {ok, Server#server{dbs_open=NumOpen - 1}};
- Error -> Error
- end.
-
-try_close_lru(StartTime) ->
- LruTime = get_lru(),
- if LruTime > StartTime ->
- % this means we've looped through all our opened dbs and found them
- % all in use.
- {error, all_dbs_active};
- true ->
- [{_, DbName}] = ets:lookup(couch_dbs_by_lru, LruTime),
- [{_, {opened, MainPid, LruTime}}] = ets:lookup(couch_dbs_by_name, DbName),
- case couch_db:is_idle(MainPid) of
- true ->
- ok = shutdown_idle_db(DbName, MainPid, LruTime);
- false ->
- % this still has referrers. Go ahead and give it a current lru time
- % and try the next one in the table.
- NewLruTime = now(),
- true = ets:insert(couch_dbs_by_name, {DbName, {opened, MainPid, NewLruTime}}),
- true = ets:insert(couch_dbs_by_pid, {MainPid, DbName}),
- true = ets:delete(couch_dbs_by_lru, LruTime),
- true = ets:insert(couch_dbs_by_lru, {NewLruTime, DbName}),
- try_close_lru(StartTime)
- end
- end.
-
-get_lru() ->
- get_lru(ets:first(couch_dbs_by_lru)).
-
-get_lru(LruTime) ->
- [{LruTime, DbName}] = ets:lookup(couch_dbs_by_lru, LruTime),
- case ets:member(couch_sys_dbs, DbName) of
- false ->
- LruTime;
- true ->
- [{_, {opened, MainPid, _}}] = ets:lookup(couch_dbs_by_name, DbName),
- case couch_db:is_idle(MainPid) of
- true ->
- NextLru = ets:next(couch_dbs_by_lru, LruTime),
- ok = shutdown_idle_db(DbName, MainPid, LruTime),
- get_lru(NextLru);
- false ->
- get_lru(ets:next(couch_dbs_by_lru, LruTime))
- end
- end.
-
-shutdown_idle_db(DbName, MainPid, LruTime) ->
- couch_util:shutdown_sync(MainPid),
- true = ets:delete(couch_dbs_by_lru, LruTime),
- true = ets:delete(couch_dbs_by_name, DbName),
- true = ets:delete(couch_dbs_by_pid, MainPid),
- true = ets:delete(couch_sys_dbs, DbName),
- ok.
-
-open_async(Server, From, DbName, Filepath, Options) ->
- Parent = self(),
- Opener = spawn_link(fun() ->
- Res = couch_db:start_link(DbName, Filepath, Options),
- gen_server:call(
- Parent, {open_result, DbName, Res, Options}, infinity
- ),
- unlink(Parent),
- case Res of
- {ok, DbReader} ->
- unlink(DbReader);
- _ ->
- ok
- end
- end),
- true = ets:insert(couch_dbs_by_name, {DbName, {opening, Opener, [From]}}),
- true = ets:insert(couch_dbs_by_pid, {Opener, DbName}),
- DbsOpen = case lists:member(sys_db, Options) of
- true ->
- true = ets:insert(couch_sys_dbs, {DbName, true}),
- Server#server.dbs_open;
- false ->
- Server#server.dbs_open + 1
- end,
- Server#server{dbs_open = DbsOpen}.
-
-handle_call({set_max_dbs_open, Max}, _From, Server) ->
- {reply, ok, Server#server{max_dbs_open=Max}};
-handle_call(get_server, _From, Server) ->
- {reply, {ok, Server}, Server};
-handle_call({open_result, DbName, {ok, OpenedDbPid}, Options}, _From, Server) ->
- link(OpenedDbPid),
- [{DbName, {opening,Opener,Froms}}] = ets:lookup(couch_dbs_by_name, DbName),
- lists:foreach(fun({FromPid,_}=From) ->
- gen_server:reply(From,
- catch couch_db:open_ref_counted(OpenedDbPid, FromPid))
- end, Froms),
- LruTime = now(),
- true = ets:insert(couch_dbs_by_name,
- {DbName, {opened, OpenedDbPid, LruTime}}),
- true = ets:delete(couch_dbs_by_pid, Opener),
- true = ets:insert(couch_dbs_by_pid, {OpenedDbPid, DbName}),
- true = ets:insert(couch_dbs_by_lru, {LruTime, DbName}),
- case lists:member(create, Options) of
- true ->
- couch_db_update_notifier:notify({created, DbName});
- false ->
- ok
- end,
- {reply, ok, Server};
-handle_call({open_result, DbName, Error, Options}, _From, Server) ->
- [{DbName, {opening,Opener,Froms}}] = ets:lookup(couch_dbs_by_name, DbName),
- lists:foreach(fun(From) ->
- gen_server:reply(From, Error)
- end, Froms),
- true = ets:delete(couch_dbs_by_name, DbName),
- true = ets:delete(couch_dbs_by_pid, Opener),
- DbsOpen = case lists:member(sys_db, Options) of
- true ->
- true = ets:delete(couch_sys_dbs, DbName),
- Server#server.dbs_open;
- false ->
- Server#server.dbs_open - 1
- end,
- {reply, ok, Server#server{dbs_open = DbsOpen}};
-handle_call({open, DbName, Options}, {FromPid,_}=From, Server) ->
- LruTime = now(),
- case ets:lookup(couch_dbs_by_name, DbName) of
- [] ->
- open_db(DbName, Server, Options, From);
- [{_, {opening, Opener, Froms}}] ->
- true = ets:insert(couch_dbs_by_name, {DbName, {opening, Opener, [From|Froms]}}),
- {noreply, Server};
- [{_, {opened, MainPid, PrevLruTime}}] ->
- true = ets:insert(couch_dbs_by_name, {DbName, {opened, MainPid, LruTime}}),
- true = ets:delete(couch_dbs_by_lru, PrevLruTime),
- true = ets:insert(couch_dbs_by_lru, {LruTime, DbName}),
- {reply, couch_db:open_ref_counted(MainPid, FromPid), Server}
- end;
-handle_call({create, DbName, Options}, From, Server) ->
- case ets:lookup(couch_dbs_by_name, DbName) of
- [] ->
- open_db(DbName, Server, [create | Options], From);
- [_AlreadyRunningDb] ->
- {reply, file_exists, Server}
- end;
-handle_call({delete, DbName, _Options}, _From, Server) ->
- DbNameList = binary_to_list(DbName),
- case check_dbname(Server, DbNameList) of
- ok ->
- FullFilepath = get_full_filename(Server, DbNameList),
- UpdateState =
- case ets:lookup(couch_dbs_by_name, DbName) of
- [] -> false;
- [{_, {opening, Pid, Froms}}] ->
- couch_util:shutdown_sync(Pid),
- true = ets:delete(couch_dbs_by_name, DbName),
- true = ets:delete(couch_dbs_by_pid, Pid),
- [gen_server:reply(F, not_found) || F <- Froms],
- true;
- [{_, {opened, Pid, LruTime}}] ->
- couch_util:shutdown_sync(Pid),
- true = ets:delete(couch_dbs_by_name, DbName),
- true = ets:delete(couch_dbs_by_pid, Pid),
- true = ets:delete(couch_dbs_by_lru, LruTime),
- true
- end,
- Server2 = case UpdateState of
- true ->
- DbsOpen = case ets:member(couch_sys_dbs, DbName) of
- true ->
- true = ets:delete(couch_sys_dbs, DbName),
- Server#server.dbs_open;
- false ->
- Server#server.dbs_open - 1
- end,
- Server#server{dbs_open = DbsOpen};
- false ->
- Server
- end,
-
- %% Delete any leftover .compact files. If we don't do this a subsequent
- %% request for this DB will try to open the .compact file and use it.
- couch_file:delete(Server#server.root_dir, FullFilepath ++ ".compact"),
-
- case couch_file:delete(Server#server.root_dir, FullFilepath) of
- ok ->
- couch_db_update_notifier:notify({deleted, DbName}),
- {reply, ok, Server2};
- {error, enoent} ->
- {reply, not_found, Server2};
- Else ->
- {reply, Else, Server2}
- end;
- Error ->
- {reply, Error, Server}
- end.
-
-handle_cast(Msg, _Server) ->
- exit({unknown_cast_message, Msg}).
-
-code_change(_OldVsn, State, _Extra) ->
- {ok, State}.
-
-handle_info({'EXIT', _Pid, config_change}, Server) ->
- {noreply, shutdown, Server};
-handle_info(Error, _Server) ->
- ?LOG_ERROR("Unexpected message, restarting couch_server: ~p", [Error]),
- exit(kill).
-
-open_db(DbName, Server, Options, From) ->
- DbNameList = binary_to_list(DbName),
- case check_dbname(Server, DbNameList) of
- ok ->
- Filepath = get_full_filename(Server, DbNameList),
- case lists:member(sys_db, Options) of
- true ->
- {noreply, open_async(Server, From, DbName, Filepath, Options)};
- false ->
- case maybe_close_lru_db(Server) of
- {ok, Server2} ->
- {noreply, open_async(Server2, From, DbName, Filepath, Options)};
- CloseError ->
- {reply, CloseError, Server}
- end
- end;
- Error ->
- {reply, Error, Server}
- end.