I have been created my own options and stream for fastify logger:
const logger = pino(
{
level: 'info',
...ecsFormat,
},
pinoMultiStream.multistream([
{ stream: streamToElastic },
{
stream: pretty({
colorize: true,
sync: true,
ignore: 'pid',
}),
},
]),)
const fastify = Fastify({logger})
now I want to extract this options as fastify plugin, how can I do this functionality? If that’s impossible what can I do to extract this code?
You can't encapsulate your code into a Fastify plugin because Fastify's logger has been already created at that time.
In this case, you need to define your own logic to build the fastify server's configuration such as a decorator pattern.
The user experience you will get would be something like:
const decorateLogger = require('my-logger-module')
const applicationConfig = loadAppConfig()
decorateLogger(applicationConfig, options)
const app = Fastify(applicationConfig)