view mod_s2sout_override/mod_s2sout_override.lua @ 5668:ecfd7aece33b

mod_measure_modules: Report module statuses via OpenMetrics Someone in the chat asked about a health check endpoint, which reminded me of mod_http_status, which provides access to module statuses with full details. After that, this idea came about, which seems natural. As noted in the README, it could be used to monitor that critical modules are in fact loaded correctly. As more modules use the status API, the more useful this module and mod_http_status becomes.
author Kim Alvefur <zash@zash.se>
date Fri, 06 Oct 2023 18:34:39 +0200
parents ae62d92506dc
children
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--% requires: s2sout-pre-connect-event

local url = require"socket.url";
local basic_resolver = require "net.resolvers.basic";

local override_for = module:get_option(module.name, {}); -- map of host to "tcp://example.com:5269"

module:hook("s2sout-pre-connect", function(event)
	local override = override_for[event.session.to_host] or override_for[event.session.to_host:gsub("^[^.]+%.", "*.")] or override_for["*"];
	if type(override) == "string" then
		override = url.parse(override);
	end
	if type(override) == "table" and override.scheme == "tcp" and type(override.host) == "string" then
		event.resolver = basic_resolver.new(override.host, tonumber(override.port) or 5269, override.scheme, {});
	elseif type(override) == "table" and override.scheme == "tls" and type(override.host) == "string" then
		event.resolver = basic_resolver.new(override.host, tonumber(override.port) or 5270, "tcp",
			{ servername = event.session.to_host; sslctx = event.session.ssl_ctx });
	end
end);