Packages
ra
2.15.1
3.1.9
3.1.8
3.1.7
3.1.6
3.1.5
3.1.4
3.1.3
3.1.2
3.1.1
3.1.0
3.0.2
3.0.1
3.0.0
3.0.0-beta.1
2.17.3
2.17.2
2.17.1
2.17.0
2.16.13
2.16.12
2.16.11
2.16.10
2.16.9
2.16.8
2.16.7
2.16.6
2.16.5
2.16.4
2.16.3
2.16.2
2.16.1
2.16.0
2.16.0-pre.12
2.16.0-pre.11
2.16.0-pre.10
2.16.0-pre.9
2.16.0-pre.8
2.16.0-pre.7
2.16.0-pre.6
2.16.0-pre.5
2.16.0-pre.4
2.16.0-pre.3
2.16.0-pre.2
2.16.0-pre.1
2.15.4
2.15.3
2.15.2
2.15.1
2.15.0
2.14.0
2.13.6
2.13.5
2.13.4
2.13.3
2.13.2
2.13.1
2.13.0
2.13.0-pre.1
2.12.0
2.11.0
2.11.0-pre.1
2.10.2-pre.2
2.10.2-pre.1
2.10.1
2.10.0
2.10.0-pre.3
2.10.0-pre.2
2.10.0-pre.1
2.9.10-pre.1
2.9.1
2.9.1-pre.2
2.9.1-pre.1
2.9.0
2.8.0
retired
2.7.3
2.7.2
2.7.1
2.7.0
2.7.0-pre.3
2.7.0-pre.2
2.7.0-pre.1
2.6.3
2.6.2
2.6.1
2.6.0-pre.1
2.5.1
2.5.1-pre.1
2.5.0
2.4.9
2.4.8
2.4.7
2.4.6
2.4.5
2.4.4
2.4.3
2.4.2
retired
2.4.1
2.4.0
2.3.0
2.2.0
2.1.0
2.0.13
2.0.12
2.0.11
2.0.10
2.0.9
2.0.8
2.0.7
2.0.6
2.0.5
2.0.4
2.0.3
2.0.2
2.0.1
2.0.0
1.1.9
1.1.8
1.1.7
1.1.6
1.1.5
1.1.4
1.1.3
1.1.2
1.1.1
1.1.0
1.0.8
1.0.7
1.0.6
1.0.5
1.0.4
1.0.3
1.0.2
1.0.1
1.0.0
0.9.6
0.9.5
0.9.4
0.9.2
0.3.3
retired
0.3.2
retired
0.3.1
retired
Raft library
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Files
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Files
src/ra_log_pre_init.erl
%% This Source Code Form is subject to the terms of the Mozilla Public
%% License, v. 2.0. If a copy of the MPL was not distributed with this
%% file, You can obtain one at https://mozilla.org/MPL/2.0/.
%%
%% Copyright (c) 2017-2023 Broadcom. All Rights Reserved. The term Broadcom refers to Broadcom Inc. and/or its subsidiaries.
%%
-module(ra_log_pre_init).
-behaviour(gen_server).
-include("ra.hrl").
%% API functions
-export([start_link/1]).
%% gen_server callbacks
-export([init/1,
handle_call/3,
handle_cast/2,
handle_info/2,
terminate/2,
code_change/3]).
-record(state, {}).
-define(ETSTBL, ra_log_snapshot_state).
%%%===================================================================
%%% API functions
%%%===================================================================
start_link(System) when is_atom(System) ->
gen_server:start_link(?MODULE, [System], []).
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
init([System]) ->
%% ra_log:pre_init ensures that the ra_log_snapshot_state table is
%% populated before WAL recovery begins to avoid writing unnecessary
%% indexes to segment files.
Regd = ra_directory:list_registered(System),
?INFO("ra system '~ts' running pre init for ~b registered servers",
[System, length(Regd)]),
_ = [begin
try pre_init(System, UId) of
ok -> ok
catch _:Err ->
?ERROR("pre_init failed in system ~s for UId ~ts with name ~ts"
" This error may need manual intervention, Error ~p",
[System, UId, Name, Err]),
ok
end
end|| {Name, UId} <- Regd],
{ok, #state{} , hibernate}.
handle_call(_Request, _From, State) ->
Reply = ok,
{reply, Reply, State}.
handle_cast(_Msg, State) ->
{noreply, State}.
handle_info(_Info, State) ->
{noreply, State}.
terminate(_Reason, _State) ->
ok.
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
pre_init(System, UId) ->
case ets:lookup(?ETSTBL, UId) of
[{_, _}] ->
%% already initialised
ok;
[] ->
case ra_system:fetch(System) of
undefined ->
{error, system_not_started};
SysCfg ->
%% check if the server dir exists, if not
%% then just log and return instead of failing.
Dir = ra_env:server_data_dir(System, UId),
case ra_lib:is_dir(Dir) of
true ->
case ra_log:read_config(Dir) of
{ok, #{log_init_args := Log}} ->
ok = ra_log:pre_init(Log#{system_config => SysCfg}),
ok;
{error, Err} ->
?ERROR("pre_init failed to read config file for UId '~ts', Err ~p",
[UId, Err]),
ok
end;
false ->
?INFO("pre_init UId '~ts' is registered but no data
directory was found, removing from ra directory",
[UId]),
_ = catch ra_directory:unregister_name(System, UId),
ok
end
end
end.