view mod_reload_components/mod_reload_components.lua @ 5648:c217f4edfc4f

misc/mtail: Start of an mtail config Stashing it here in case anyone wants to continue working on it. Currently it's only counting log messages by level. Due to the permissions set by systemd on Prosody logs, mtail never managed to start correctly until permissions were manually relaxed.
author Kim Alvefur <zash@zash.se>
date Sun, 17 Sep 2023 13:36:30 +0200
parents 85d04dd87f14
children
line wrap: on
line source

module:set_global();

local configmanager = require "core.configmanager";
local hostmanager = require"core.hostmanager";

local function reload_components()

        --- Check if host configuration is a component
        --- @param h hostname
        local function config_is_component(h)
            return h ~= nil and configmanager.get(h, "component_module") ~= nil; -- If a host has a component module defined within it, then it is a component
        end;

        --- Check if host / component configuration is active
        --- @param h hostname / component name
        local function component_is_new(h)
                return h ~= "*" and not hosts[h]; -- If a host is not defined in hosts and it is not global, then it is new
        end

        --- Search for new components that are not activated
        for h, c in pairs(configmanager.getconfig()) do
            if config_is_component(h) and component_is_new(h) then
                module:log ("debug", "Loading new component %s", h );
                hostmanager.activate(h, c);
            end
        end

        --- Search for active components that are not enabled in the configmanager anymore
        local enabled = {}
        for h in pairs(configmanager.getconfig()) do
            enabled[h] = true; -- Set true if it is defined in the configuration file
        end
        for h, c in pairs(hosts) do
            if not enabled[h] then -- Deactivate if not present in the configuration file
                hostmanager.deactivate(h,c);
            end
        end
end

module:hook("config-reloaded", reload_components);