%% This file contains instructions for upgrading from the LAST version to
%% the CURRENT version.
%%
%% We only need to write instructions for the changes in the specific pull request,
%% these files will be automatically merged/aggregated into a complete relup file
%% before a new version is released.
%%
%% Note that we do not support the 'apply' command in the 'code_changes' section.
%% If any complex operations are needed during the upgrade process, please add
%% them in the 'post_upgrade_callbacks' section, and implement them in the
%% 'emqx_post_upgrade' module. We consolidate the hot upgrade callback code into
%% a single module ('emqx_post_upgrade') is to avoid mixing the hot upgrade-related
%% code with the main logic code.

ChildSpec = fun(Mod) ->
        #{
            id => Mod,
            start => {Mod, start_link, []},
            restart => permanent,
            shutdown => 5000,
            type => worker,
            modules => [Mod]
        }
    end.

#{
    target_version => "5.6.1+patch.A",
    from_version => "5.6.1",
    code_changes =>
        %% the 'emqx_release' and 'emqx_post_upgrade' will be automatically added,
        %% no need to include them here
        [ {load_module, emqx_broker}
        , {load_module, emqx_metrics}
        , {load_module, emqx_ds_replication_shard_allocator}
        , {update, emqx_ds_replication_layer_egress, {advanced, #{}}}
        ],
    post_upgrade_callbacks =>
        [
            %% emqx_post_upgrade:pr12765_update_stats_timer/1
            pr12765_update_stats_timer,
            %% emqx_post_upgrade:pr20000_ensure_sup_started/3
            {pr20000_ensure_sup_started, ["5.6.1+patch.A", ChildSpec(some_mod)]}
        ]
}.