A Listener For Updating The LoggerCategoryCache From A Launch Darkly Variation
Introduction
An "Arctor" implementation for listening for and updating the LoggerCategoryCache from a Launch Darkly variation in server-side node.js.
Usage
To use the module, follow the example in the included below file, which plays nicely with all the other @alt-javascript modules.
The Scanner, takes a LoggerCategoryCacheVariation which is injected with the global root context LoggerCategoryCache
instance (each logger has a handle to it, though we could get it directly from global.boot.contexts.root.loggercategoryCache)
that will act on flagged LaunchDarkly JSON config and replace the internal cache object within it's see(clearly)
function.
const LaunchDarkly = require('launchdarkly-node-server-sdk');
const ScannerDarkly = require('@alt-javascript/scanner-darkly');
const {config} = require("@alt-javascript/config");
const {boot} = require("@alt-javascript/boot");
const {LoggerFactory} = require('@alt-javascript/logger');
boot({config});
const LoggerCategoryCacheVariation = require('@alt-javascript/scanner-darkly'); // this uses booted logging config, so is required after boot().
const logger = LoggerFactory.getLogger('@alt-javascript/scanner-darkly/scan');
const ldlogger = LoggerFactory.getLogger('LaunchDarkly');
const SDK_KEY = config.get('scanner.darkly.sdk-key');
const scannerDarkly = new ScannerDarkly(
new LoggerCategoryCacheVariation('logging-levels', {"key": "user@test.com"}, {"/":"error"},logger.cache),
SDK_KEY,
{logger: ldlogger});
scannerDarkly.init();
// ... later, on process exit.
scannerDarkly.destroy();