es/elastic.go

package main

import (
	"fmt"
	elastic "github.com/olivere/elastic/v7"
	"os"
)

func ClientFromConfig(cfg ElasticConfiguration) *elastic.Client {
	opts := []elastic.ClientOptionFunc{
		elastic.SetURL(cfg.URL),
		elastic.SetSniff(false),
		elastic.SetGzip(true),
	}
	if cfg.User != "" && cfg.Pass != "" {
		opts = append(opts, elastic.SetBasicAuth(
			cfg.User, cfg.Pass,
		))
	}

	es, err := elastic.NewClient(opts...)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Elastic connection error: %s\n", err.Error())
		os.Exit(1)
	}

	return es
}