Formtted Encoder Module for Caddy's Logger

This plugin adds logging encoder named formatted. The module accepts a template with the placeholders are surrounded by braces {} and filled by values extracted from the stucture of the JSON log encoder. The JSON configuration looks like this:

{
	"encoder": "formatted",
	"template": "{...}"
}

The nesting is traversed using >. For example, to print the uri field, the traversal is templated as {request>uri}.

{
	"request": {
		"method": "GET",
		"uri": "/",
		"proto": "HTTP/2.0",
		...
}

The Caddyfile configuration accepts the template immediately following the encoder name, and can be ommitted to assume Apache Common Log Format.

log {
	format formatted <template>
}

Install

First, the xcaddy command:

$ go get -u github.com/caddyserver/xcaddy/cmd/xcaddy

Then build Caddy with this Go module plugged in. For example:

$ xcaddy build --with github.com/caddyserver/format-encoder