example_test.go

package dlog_test

import (
	"bufio"
	"context"
	"fmt"
	"log"
	"net"
	"net/http"

	"github.com/ahmetalpbalkan/dlog"
)

func ExampleNewReader() {
	client := &http.Client{
		Transport: &http.Transport{
			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
				conn, err := net.Dial("unix", "/var/run/docker.sock")
				if err != nil {
					return nil, fmt.Errorf("cannot connect docker socket: %v", err)
				}
				return conn, nil
			}}}
	url := "http://-/containers/CONTAINER_NAME/logs?stdout=1&stderr=1&follow=1"
	resp, err := client.Get(url)
	if err != nil {
		log.Fatalf("request failed: %v", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		log.Fatalf("unexpected status code: %s", resp.Status)
	}

	// At this point we have a logs stream, here is how to read each log line
	// from container:
	r := dlog.NewReader(resp.Body)
	s := bufio.NewScanner(r)
	for s.Scan() {
		log.Println(s)
	}
	if err := s.Err(); err != nil {
		log.Fatalf("read error: %v", err)
	}
}