okit/examples/json/main.go

// Copyright (C) 2022 The OKit Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.

package main

import (
	"net/http"

	"go.pitz.tech/okit"
	okithttp "go.pitz.tech/okit/http"
	"go.pitz.tech/okit/observer"
)

func main() {
	client := okit.NewClient().
		WithObservers(
			observer.Local(
				observer.Format("json"),
			),

			// TODO: add remote observers
		)

	okit.Replace(client)

	// Instrument HTTP Clients
	okithttp.InstrumentClient(http.DefaultClient)

	mux := http.NewServeMux()

	{ // Add reporting endpoints
		endpoint := okithttp.NewEndpoint()
		mux.HandleFunc("/health", endpoint.Health)
		mux.HandleFunc("/metrics", endpoint.Metrics)
		mux.HandleFunc("/trace", endpoint.Trace)
	}

	// Instrument HTTP Handlers
	handler := okithttp.InstrumentHandler(mux)
	err := http.ListenAndServe("0.0.0.0:8080", handler)
	if err != nil {
		panic(err)
	}
}