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%%============================================================================== |
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%% Copyright 2017 Erlang Solutions Ltd. |
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%% |
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%% Licensed under the Apache License, Version 2.0 (the "License"); |
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%% you may not use this file except in compliance with the License. |
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%% You may obtain a copy of the License at |
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%% |
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%% http://www.apache.org/licenses/LICENSE-2.0 |
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%% |
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%% Unless required by applicable law or agreed to in writing, software |
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%% distributed under the License is distributed on an "AS IS" BASIS, |
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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%% See the License for the specific language governing permissions and |
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%% limitations under the License. |
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%%============================================================================== |
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-module(mod_global_distrib_server_mgr). |
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-author('piotr.nosek@erlang-solutions.com'). |
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|
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-include("mongoose.hrl"). |
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-behaviour(gen_server). |
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|
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-export([start_link/2]). |
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-export([get_connection/1, ping_proc/1, get_state_info/1]). |
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-export([force_refresh/1, close_disabled/1]). |
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-export([init/1, handle_continue/2, handle_call/3, handle_cast/2, |
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handle_info/2, terminate/2, code_change/3]). |
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|
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%% Debug |
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-export([get_enabled_endpoints/1, get_disabled_endpoints/1]). |
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|
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-ignore_xref([close_disabled/1, force_refresh/1, get_disabled_endpoints/1, |
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get_enabled_endpoints/1, get_state_info/1, start_link/2]). |
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|
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-type endpoint() :: mod_global_distrib_utils:endpoint(). |
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-type endpoint_pid_tuple() :: {endpoint(), pid()}. |
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|
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-record(endpoint_info, { |
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endpoint :: endpoint(), |
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conn_pool_ref :: atom(), |
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conn_pool_pid :: pid(), |
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monitor_ref :: reference() |
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}). |
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|
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-type endpoint_info() :: #endpoint_info{}. |
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-type endpoints_changes() :: [{enable | disable, endpoint()}]. |
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|
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-record(state, { |
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server :: jid:lserver(), |
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supervisor :: pid(), |
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enabled :: [endpoint_info()], |
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disabled :: [endpoint_info()], |
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pending_endpoints :: endpoints_changes(), |
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pending_gets :: queue:queue(tuple()), |
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refresh_interval :: pos_integer(), |
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refresh_interval_when_disconnected :: pos_integer(), |
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gc_interval :: pos_integer(), |
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%% Used by force_refresh to block until refresh is fully done. |
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%% Listeners are notified only once and then this list is cleared. |
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pending_endpoints_listeners = [] :: [pid()], |
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%% Containts last result of get_endpoints |
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last_endpoints :: [endpoint()] | undefined, |
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conn_opts :: map() |
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}). |
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|
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-type state() :: #state{}. |
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%%-------------------------------------------------------------------- |
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%% API |
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%%-------------------------------------------------------------------- |
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|
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-spec start_link(Server :: jid:lserver(), ServerSup :: pid()) -> {ok, pid()} | {error, any()}. |
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start_link(Server, ServerSup) when is_binary(Server) -> |
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:-( |
Name = mod_global_distrib_utils:server_to_mgr_name(Server), |
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:-( |
gen_server:start_link({local, Name}, ?MODULE, [Server, ServerSup], []). |
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|
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%% Will return only when endpoints changes (if there are any) are fully applied. |
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%% If force refresh is already in progress, new concurrent calls won't trigger another refresh |
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%% but will return 'ok' when the current one is finished. |
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-spec force_refresh(Server :: jid:lserver()) -> ok. |
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force_refresh(Server) -> |
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:-( |
do_call(Server, force_refresh). |
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|
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-spec close_disabled(Server :: jid:lserver()) -> ok. |
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close_disabled(Server) -> |
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:-( |
do_call(Server, close_disabled). |
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|
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-spec get_connection(Server :: jid:lserver()) -> {ok, pid()} | no_return(). |
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get_connection(Server) -> |
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:-( |
{ok, CPoolRef} = do_call(Server, get_connection_pool), |
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:-( |
{ok, cpool:get_connection(CPoolRef)}. |
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|
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%% `ping_proc` instead of just `ping` to emphasize that this call does not ping |
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%% some remote server but the manager process instead |
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-spec ping_proc(Server :: jid:lserver()) -> pong | pang. |
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ping_proc(Server) -> |
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:-( |
case catch do_call(Server, ping_proc) of |
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:-( |
pong -> pong; |
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:-( |
_Error -> pang |
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end. |
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|
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-spec get_state_info(Server :: jid:lserver()) -> map(). |
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get_state_info(Server) -> |
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:-( |
do_call(Server, get_state_info). |
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|
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%%-------------------------------------------------------------------- |
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%% Debug API |
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%%-------------------------------------------------------------------- |
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|
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-spec get_enabled_endpoints(Server :: jid:lserver()) -> [endpoint()]. |
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get_enabled_endpoints(Server) -> |
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:-( |
do_call(Server, get_enabled_endpoints). |
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|
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-spec get_disabled_endpoints(Server :: jid:lserver()) -> [endpoint()]. |
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get_disabled_endpoints(Server) -> |
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:-( |
do_call(Server, get_disabled_endpoints). |
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%%-------------------------------------------------------------------- |
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%% gen_server callbacks |
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%%-------------------------------------------------------------------- |
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init([Server, Supervisor]) -> |
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:-( |
process_flag(trap_exit, true), |
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|
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:-( |
HostType = mod_global_distrib_utils:host_type(), |
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:-( |
ConnOpts = gen_mod:get_module_opt(HostType, mod_global_distrib_hosts_refresher, connections), |
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:-( |
#{endpoint_refresh_interval := RefreshInterval, |
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endpoint_refresh_interval_when_empty := DisRefreshInterval, |
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disabled_gc_interval := GCInterval} = ConnOpts, |
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|
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:-( |
State = #state{ |
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server = Server, |
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supervisor = Supervisor, |
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enabled = [], |
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disabled = [], |
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pending_endpoints = [], |
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pending_gets = queue:new(), |
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refresh_interval = RefreshInterval, |
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refresh_interval_when_disconnected = DisRefreshInterval, |
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gc_interval = GCInterval, |
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conn_opts = ConnOpts |
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}, |
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|
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:-( |
?LOG_INFO(ls(#{what => gd_mgr_started}, State)), |
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:-( |
{ok, State, {continue, initial_refresh}}. |
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|
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handle_continue(initial_refresh, State) -> |
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:-( |
State2 = refresh_connections(State), |
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:-( |
schedule_refresh(State2), |
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:-( |
schedule_gc(State2), |
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:-( |
{noreply, State2}. |
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|
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handle_call(get_connection_pool, From, #state{ enabled = [], |
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pending_gets = PendingGets } = State) -> |
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:-( |
{noreply, State#state{ pending_gets = queue:in(From, PendingGets) }}; |
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handle_call(get_connection_pool, _From, #state{ enabled = Enabled } = State) -> |
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:-( |
{reply, {ok, pick_connection_pool(Enabled)}, State}; |
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handle_call(force_refresh, From, #state{ pending_endpoints_listeners = [] } = State) -> |
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:-( |
State2 = refresh_connections(State), |
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:-( |
case State2#state.pending_endpoints of |
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:-( |
[] -> {reply, ok, State2}; |
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:-( |
_ -> {noreply, State2#state{ pending_endpoints_listeners = [From] }} |
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end; |
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handle_call(force_refresh, From, #state{ pending_endpoints_listeners = Listeners } = State) -> |
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:-( |
{noreply, State#state{ pending_endpoints_listeners = [From | Listeners] }}; |
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handle_call(close_disabled, _From, #state{ disabled = Disabled } = State) -> |
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:-( |
lists:foreach( |
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fun(#endpoint_info{ endpoint = Endpoint }) -> |
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:-( |
stop_disabled(Endpoint, State) |
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end, Disabled), |
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:-( |
{reply, ok, State}; |
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handle_call(get_enabled_endpoints, _From, State) -> |
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:-( |
{reply, [ CI#endpoint_info.endpoint || CI <- State#state.enabled ], State}; |
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handle_call(get_disabled_endpoints, _From, State) -> |
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:-( |
{reply, [ CI#endpoint_info.endpoint || CI <- State#state.disabled ], State}; |
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handle_call(ping_proc, _From, State) -> |
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:-( |
{reply, pong, State}; |
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handle_call(get_state_info, _From, State) -> |
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:-( |
{reply, state_info(State), State}. |
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|
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handle_cast({call_timeout, FromPid, Msg}, State) -> |
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:-( |
?LOG_WARNING(ls(#{what => gd_mgr_call_timeout, |
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:-( |
caller_pid => FromPid, caller_msg => Msg}, State)), |
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:-( |
{noreply, State}; |
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handle_cast(Msg, State) -> |
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:-( |
?UNEXPECTED_CAST(Msg), |
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:-( |
{noreply, State}. |
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|
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handle_info(refresh, State) -> |
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:-( |
State2 = case State#state.pending_endpoints of |
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:-( |
[] -> refresh_connections(State); |
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:-( |
_ -> State % May occur if we are in the middle of force_refresh |
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end, |
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:-( |
case State#state.pending_endpoints == State2#state.pending_endpoints of |
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true -> |
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:-( |
ok; |
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_ -> |
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:-( |
?LOG_INFO(ls(#{what => gd_mgr_refresh, |
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text => <<"A list of pending_endpoints has changed in GD server manager">>, |
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pending_endpoints_before => State#state.pending_endpoints, |
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:-( |
pending_endpoints_after => State2#state.pending_endpoints}, State)) |
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end, |
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:-( |
schedule_refresh(State2), |
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:-( |
{noreply, State2}; |
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handle_info(disabled_gc, #state{ disabled = Disabled } = State) -> |
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:-( |
StoppedEndpoints = lists:flatmap( |
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fun(#endpoint_info{ endpoint = Endpoint, conn_pool_ref = ConnPool }) -> |
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:-( |
try cpool:get_connection(ConnPool, no_wait_for_reconnect) of |
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_ConnPid -> |
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:-( |
[] |
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catch error:no_connections -> |
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:-( |
stop_disabled(Endpoint, State), |
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:-( |
[Endpoint] |
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end |
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end, Disabled), |
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:-( |
case StoppedEndpoints of |
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[] -> |
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:-( |
ok; |
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_ -> |
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:-( |
?LOG_INFO(ls(#{what => gd_mgr_disabled_gc, |
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text => <<"GD server manager stops some inactive endpoints">>, |
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:-( |
stopped_endpoints => StoppedEndpoints}, State)) |
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end, |
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:-( |
schedule_gc(State), |
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:-( |
{noreply, State}; |
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handle_info(process_pending_get, #state{ enabled = [] } = State) -> |
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:-( |
{noreply, State}; |
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handle_info(process_pending_get, #state{ pending_gets = PendingGets, |
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enabled = Enabled } = State) -> |
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:-( |
NState = |
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case queue:out(PendingGets) of |
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{{value, From}, NewPendingGets} -> |
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:-( |
CPoolRef = pick_connection_pool(Enabled), |
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:-( |
gen_server:reply(From, {ok, CPoolRef}), |
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:-( |
State#state{ pending_gets = NewPendingGets }; |
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{empty, _} -> |
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:-( |
State |
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end, |
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:-( |
maybe_schedule_process_get(NState), |
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:-( |
{noreply, NState}; |
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handle_info(process_pending_endpoint, |
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#state{ pending_endpoints = [{enable, Endpoint} | RPendingEndpoints] } = State) -> |
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:-( |
State2 = |
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case catch enable(Endpoint, State) of |
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{ok, NState0} -> |
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:-( |
?LOG_INFO(ls(#{what => gd_endpoint_enabled, |
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text => <<"GD server manager enables pending endpoint">>, |
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:-( |
endpoint => Endpoint}, State)), |
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:-( |
NState0; |
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Error -> |
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:-( |
?LOG_ERROR(ls(#{what => gd_endpoint_enabling_failed, |
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text => <<"GD server manager cannot enable endpoint">>, |
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:-( |
endpoint => Endpoint, reason => Error}, State)), |
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:-( |
State |
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end, |
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|
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:-( |
maybe_schedule_process_get(State2), |
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:-( |
maybe_schedule_process_endpoint(RPendingEndpoints), |
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:-( |
State3 = State2#state{ pending_endpoints = RPendingEndpoints }, |
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:-( |
State4 = maybe_notify_endpoints_listeners(State3), |
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:-( |
{noreply, State4}; |
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handle_info(process_pending_endpoint, |
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#state{ pending_endpoints = [{disable, Endpoint} | RPendingEndpoints] } = State) -> |
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:-( |
State2 = |
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case catch disable(Endpoint, State) of |
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{ok, NState0} -> |
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:-( |
?LOG_INFO(ls(#{what => gd_endpoint_disabled, |
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text => <<"GD server manager disables pending endpoint">>, |
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:-( |
endpoint => Endpoint}, State)), |
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:-( |
NState0; |
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Error -> |
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:-( |
?LOG_ERROR(ls(#{what => gd_endpoint_disabling_failed, |
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text => <<"GD server manager cannot disable endpoint">>, |
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:-( |
endpoint => Endpoint, reason => Error}, State)), |
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:-( |
State |
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end, |
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|
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:-( |
maybe_schedule_process_endpoint(RPendingEndpoints), |
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:-( |
State3 = State2#state{ pending_endpoints = RPendingEndpoints }, |
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:-( |
State4 = maybe_notify_endpoints_listeners(State3), |
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:-( |
{noreply, State4}; |
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handle_info({'DOWN', MonitorRef, _Type, Pid, Reason}, #state{ enabled = Enabled, |
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disabled = Disabled } = State) -> |
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:-( |
{Endpoint, Type, NState} = |
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case lists:keytake(MonitorRef, #endpoint_info.monitor_ref, Enabled) of |
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{value, #endpoint_info{ endpoint = Endpoint0 }, NEnabled} -> |
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:-( |
{Endpoint0, enabled, State#state{ enabled = NEnabled }}; |
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false -> |
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:-( |
case lists:keytake(MonitorRef, #endpoint_info.monitor_ref, Disabled) of |
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{value, #endpoint_info{ endpoint = Endpoint0 }, NDisabled} -> |
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:-( |
{Endpoint0, disabled, State#state{ disabled = NDisabled }}; |
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false -> |
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:-( |
{Pid, unknown, State} |
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end |
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end, |
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|
|
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:-( |
Reason2 = |
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|
case Reason of |
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:-( |
shutdown -> normal; |
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:-( |
_Other -> Reason |
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end, |
| 301 |
:-( |
?LOG_INFO(ls(#{what => gd_endpoint_closed, |
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text => <<"Disconnected from a GD endpoint">>, |
| 303 |
:-( |
type => Type, endpoint => Endpoint, reason => Reason2}, State)), |
| 304 |
:-( |
{noreply, NState}; |
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handle_info(Msg, State) -> |
| 306 |
:-( |
?UNEXPECTED_INFO(Msg), |
| 307 |
:-( |
{noreply, State}. |
| 308 |
|
|
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code_change(_OldVsn, State, _Extra) -> |
| 310 |
:-( |
{ok, State}. |
| 311 |
|
|
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terminate(_Reason, _State) -> |
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|
%% TODO: Cleanup |
| 314 |
:-( |
ok. |
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|
|
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%%-------------------------------------------------------------------- |
| 317 |
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%% Internal functions |
| 318 |
|
%%-------------------------------------------------------------------- |
| 319 |
|
|
| 320 |
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-spec do_call(Server :: jid:lserver(), Msg :: any()) -> any(). |
| 321 |
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do_call(Server, Msg) -> |
| 322 |
:-( |
MgrName = mod_global_distrib_utils:server_to_mgr_name(Server), |
| 323 |
:-( |
try |
| 324 |
:-( |
gen_server:call(MgrName, Msg) |
| 325 |
|
catch exit:{timeout,_} = Reason:Stacktrace -> |
| 326 |
:-( |
catch gen_server:cast(MgrName, {call_timeout, self(), Msg}), |
| 327 |
:-( |
erlang:raise(exit, Reason, Stacktrace) |
| 328 |
|
end. |
| 329 |
|
|
| 330 |
|
-spec schedule_refresh(State :: state()) -> state(). |
| 331 |
|
schedule_refresh(#state{ refresh_interval = Interval, last_endpoints = [_|_] } = State) -> |
| 332 |
:-( |
do_schedule_refresh(State, Interval); |
| 333 |
|
schedule_refresh(#state{ refresh_interval_when_disconnected = Interval } = State) -> |
| 334 |
|
%% Try more often by default when get_endpoints returns empty list |
| 335 |
:-( |
do_schedule_refresh(State, Interval). |
| 336 |
|
|
| 337 |
|
do_schedule_refresh(State, Interval) -> |
| 338 |
:-( |
erlang:send_after(timer:seconds(Interval), self(), refresh), |
| 339 |
:-( |
State. |
| 340 |
|
|
| 341 |
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-spec schedule_gc(State :: state()) -> state(). |
| 342 |
|
schedule_gc(#state{ gc_interval = Interval } = State) -> |
| 343 |
:-( |
erlang:send_after(timer:seconds(Interval), self(), disabled_gc), |
| 344 |
:-( |
State. |
| 345 |
|
|
| 346 |
|
-spec maybe_schedule_process_endpoint(PendingEndpoints :: list()) -> any(). |
| 347 |
|
maybe_schedule_process_endpoint([]) -> |
| 348 |
:-( |
nop; |
| 349 |
|
maybe_schedule_process_endpoint(_) -> |
| 350 |
:-( |
self() ! process_pending_endpoint. |
| 351 |
|
|
| 352 |
|
-spec maybe_schedule_process_get(state()) -> any(). |
| 353 |
|
maybe_schedule_process_get(#state{ pending_gets = PendingGets, enabled = Enabled }) -> |
| 354 |
:-( |
case PendingGets == queue:new() of |
| 355 |
:-( |
true -> nop; |
| 356 |
|
false -> |
| 357 |
:-( |
Enabled =/= [] orelse error(enabled_is_empty), |
| 358 |
:-( |
self() ! process_pending_get |
| 359 |
|
end. |
| 360 |
|
|
| 361 |
|
-spec maybe_notify_endpoints_listeners(state()) -> state(). |
| 362 |
|
maybe_notify_endpoints_listeners(#state{ pending_endpoints = [], |
| 363 |
|
pending_endpoints_listeners = Listeners } = State) -> |
| 364 |
:-( |
lists:foreach(fun(Listener) -> gen_server:reply(Listener, ok) end, Listeners), |
| 365 |
:-( |
State#state{ pending_endpoints_listeners = [] }; |
| 366 |
|
maybe_notify_endpoints_listeners(State) -> |
| 367 |
:-( |
State. |
| 368 |
|
|
| 369 |
|
-spec pick_connection_pool(Enabled :: [endpoint_info()]) -> pid() | no_connections. |
| 370 |
|
pick_connection_pool(Enabled) -> |
| 371 |
:-( |
#endpoint_info{ conn_pool_ref = PoolRef } = lists:nth(rand:uniform(length(Enabled)), Enabled), |
| 372 |
:-( |
PoolRef. |
| 373 |
|
|
| 374 |
|
-spec refresh_connections(State :: state()) -> state(). |
| 375 |
|
refresh_connections(#state{ server = Server, pending_endpoints = PendingEndpoints, |
| 376 |
|
last_endpoints = LastEndpoints } = State) -> |
| 377 |
:-( |
?LOG_DEBUG(ls(#{what => gd_refreshing_endpoints}, State)), |
| 378 |
:-( |
NewEndpoints = get_endpoints(Server), |
| 379 |
:-( |
case NewEndpoints of |
| 380 |
|
LastEndpoints -> |
| 381 |
:-( |
nothing_new; |
| 382 |
|
_ -> |
| 383 |
:-( |
?LOG_INFO(ls(#{what => gd_endpoints_change, |
| 384 |
|
old_endpoints => LastEndpoints, |
| 385 |
:-( |
new_endpoints => NewEndpoints}, State)) |
| 386 |
|
end, |
| 387 |
:-( |
?LOG_DEBUG(ls(#{what => gd_fetched_endpoints, fetched_endpoints => NewEndpoints}, State)), |
| 388 |
|
|
| 389 |
:-( |
NPendingEndpoints = resolve_pending(NewEndpoints, State#state.enabled), |
| 390 |
:-( |
log_endpoints_changes(Server, NPendingEndpoints, State), |
| 391 |
|
|
| 392 |
:-( |
case PendingEndpoints of |
| 393 |
:-( |
[] -> maybe_schedule_process_endpoint(NPendingEndpoints); |
| 394 |
:-( |
_ -> already_scheduled |
| 395 |
|
end, |
| 396 |
|
|
| 397 |
:-( |
FinalPendingEndpoints = PendingEndpoints ++ NPendingEndpoints, |
| 398 |
|
|
| 399 |
:-( |
case FinalPendingEndpoints of |
| 400 |
|
[] -> |
| 401 |
:-( |
no_log; |
| 402 |
|
_ -> |
| 403 |
:-( |
?LOG_DEBUG(ls(#{what => gd_endpoints_update_scheduled, |
| 404 |
|
new_changes => NPendingEndpoints, |
| 405 |
|
pending_changes => FinalPendingEndpoints, |
| 406 |
|
new_changes_length => length(NPendingEndpoints), |
| 407 |
|
pending_changes_length => length(FinalPendingEndpoints)}, |
| 408 |
:-( |
State)) |
| 409 |
|
end, |
| 410 |
:-( |
State#state{ pending_endpoints = FinalPendingEndpoints, last_endpoints = NewEndpoints }. |
| 411 |
|
|
| 412 |
|
-spec get_endpoints(Server :: jid:lserver()) -> [mod_global_distrib_utils:endpoint()]. |
| 413 |
|
get_endpoints(Server) -> |
| 414 |
:-( |
EndpointsToResolve = mod_global_distrib_mapping:endpoints(Server), |
| 415 |
:-( |
mod_global_distrib_utils:resolve_endpoints(EndpointsToResolve). |
| 416 |
|
|
| 417 |
|
-spec resolve_pending(NewEndpointList :: [mod_global_distrib_utils:endpoint()], |
| 418 |
|
OldEnabled :: [endpoint_pid_tuple()]) -> |
| 419 |
|
endpoints_changes(). |
| 420 |
|
resolve_pending([], []) -> |
| 421 |
:-( |
[]; |
| 422 |
|
resolve_pending([], [#endpoint_info{ endpoint = ToDisable } | RToDisable]) -> |
| 423 |
:-( |
[{disable, ToDisable} | resolve_pending([], RToDisable)]; |
| 424 |
|
resolve_pending([MaybeToEnable | RNewEndpoints], OldEnabled) -> |
| 425 |
:-( |
case lists:keytake(MaybeToEnable, #endpoint_info.endpoint, OldEnabled) of |
| 426 |
:-( |
false -> [{enable, MaybeToEnable} | resolve_pending(RNewEndpoints, OldEnabled)]; |
| 427 |
:-( |
{value, _, NOldEnabled} -> resolve_pending(RNewEndpoints, NOldEnabled) |
| 428 |
|
end. |
| 429 |
|
|
| 430 |
|
-spec log_endpoints_changes(Server :: jid:lserver(), |
| 431 |
|
EndpointsChanges :: endpoints_changes(), term()) -> any(). |
| 432 |
|
log_endpoints_changes(Server, [], State) -> |
| 433 |
:-( |
?LOG_DEBUG(ls(#{what => gd_same_endpoints, server => Server, |
| 434 |
:-( |
text => <<"No endpoint changes">>}, State)); |
| 435 |
|
log_endpoints_changes(Server, EndpointsChanges, State) -> |
| 436 |
:-( |
?LOG_INFO(ls(#{what => gd_endpoints_changes, server => Server, |
| 437 |
:-( |
to_enable => [ E || {enable, E} <- EndpointsChanges ], |
| 438 |
:-( |
to_disable => [ E || {disable, E} <- EndpointsChanges ]}, State)). |
| 439 |
|
|
| 440 |
|
-spec enable(Endpoint :: endpoint(), State :: state()) -> {ok, state()} | {error, any()}. |
| 441 |
|
enable(Endpoint, #state{ disabled = Disabled, supervisor = Supervisor, |
| 442 |
|
enabled = Enabled, server = Server, conn_opts = ConnOpts } = State) -> |
| 443 |
:-( |
case lists:keytake(Endpoint, #endpoint_info.endpoint, Disabled) of |
| 444 |
|
false -> |
| 445 |
:-( |
case catch mod_global_distrib_server_sup:start_pool(Supervisor, Endpoint, |
| 446 |
|
Server, ConnOpts) of |
| 447 |
|
{ok, ConnPoolRef, ConnPoolPid} -> |
| 448 |
:-( |
MonitorRef = monitor(process, ConnPoolPid), |
| 449 |
:-( |
EndpointInfo = #endpoint_info{ |
| 450 |
|
endpoint = Endpoint, |
| 451 |
|
conn_pool_ref = ConnPoolRef, |
| 452 |
|
conn_pool_pid = ConnPoolPid, |
| 453 |
|
monitor_ref = MonitorRef |
| 454 |
|
}, |
| 455 |
:-( |
{ok, State#state{ enabled = [EndpointInfo | Enabled] }}; |
| 456 |
|
Error -> |
| 457 |
:-( |
{error, Error} |
| 458 |
|
end; |
| 459 |
|
{value, EndpointInfo, NewDisabled} -> |
| 460 |
:-( |
{ok, State#state{ enabled = [EndpointInfo | Enabled], disabled = NewDisabled }} |
| 461 |
|
end. |
| 462 |
|
|
| 463 |
|
-spec disable(Endpoint :: endpoint(), State :: state()) -> {ok, state()} | {error, any()}. |
| 464 |
|
disable(Endpoint, #state{ disabled = Disabled, enabled = Enabled } = State) -> |
| 465 |
:-( |
{value, EndpointInfo, NewEnabled} = lists:keytake(Endpoint, #endpoint_info.endpoint, Enabled), |
| 466 |
:-( |
{ok, State#state{ enabled = NewEnabled, disabled = [EndpointInfo | Disabled] }}. |
| 467 |
|
|
| 468 |
|
-spec stop_disabled(Endpoint :: endpoint(), State :: state()) -> any(). |
| 469 |
|
stop_disabled(Endpoint, State) -> |
| 470 |
:-( |
case catch mod_global_distrib_server_sup:stop_pool( |
| 471 |
|
State#state.supervisor, Endpoint) of |
| 472 |
|
ok -> |
| 473 |
:-( |
ok; |
| 474 |
|
Error -> |
| 475 |
:-( |
?LOG_ERROR(ls(#{what => gd_cannot_close_disabled_connection, |
| 476 |
|
reason => Error, endpoint => Endpoint}, |
| 477 |
:-( |
State)) |
| 478 |
|
end. |
| 479 |
|
|
| 480 |
|
state_info(#state{ |
| 481 |
|
server = Server, |
| 482 |
|
supervisor = Supervisor, |
| 483 |
|
enabled = Enabled, |
| 484 |
|
disabled = Disabled, |
| 485 |
|
pending_endpoints = PendingEndpoints, |
| 486 |
|
pending_gets = PendingGets, |
| 487 |
|
refresh_interval = RefreshInterval, |
| 488 |
|
refresh_interval_when_disconnected = DisRefreshInterval, |
| 489 |
|
gc_interval = GCInterval, |
| 490 |
|
pending_endpoints_listeners = PendingEndpointsListeners, |
| 491 |
|
last_endpoints = LastEndpoints |
| 492 |
|
}) -> |
| 493 |
:-( |
#{server => Server, |
| 494 |
|
supervisor => Supervisor, |
| 495 |
|
enabled => Enabled, |
| 496 |
|
disabled => Disabled, |
| 497 |
|
pending_endpoints => PendingEndpoints, |
| 498 |
|
pending_gets => PendingGets, |
| 499 |
|
refresh_interval => RefreshInterval, |
| 500 |
|
refresh_interval_when_disconnected => DisRefreshInterval, |
| 501 |
|
gc_interval => GCInterval, |
| 502 |
|
pending_endpoints_listeners => PendingEndpointsListeners, |
| 503 |
|
last_endpoints => LastEndpoints}. |
| 504 |
|
|
| 505 |
|
|
| 506 |
|
%% Log State |
| 507 |
|
ls(LogMeta, State) -> |
| 508 |
:-( |
maps:merge(state_info(State), LogMeta). |