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// Copyright 2012-present Oliver Eilhard. All rights reserved.
// Use of this source code is governed by a MIT-license.
// See http://olivere.mit-license.org/license.txt for details.
package config
import (
"fmt"
"net/url"
"strconv"
"strings"
)
// Config represents an Elasticsearch configuration.
type Config struct {
URL string
Index string
Username string
Password string
Shards int
Replicas int
Sniff *bool
Infolog string
Errorlog string
Tracelog string
}
// Parse returns the Elasticsearch configuration by extracting it
// from the URL, its path, and its query string.
//
// Example:
// http://127.0.0.1:9200/store-blobs?shards=1&replicas=0&sniff=false&tracelog=elastic.trace.log
//
// The code above will return a URL of http://127.0.0.1:9200, an index name
// of store-blobs, and the related settings from the query string.
func Parse(elasticURL string) (*Config, error) {
cfg := &Config{
Shards: 1,
Replicas: 0,
Sniff: nil,
}
uri, err := url.Parse(elasticURL)
if err != nil {
return nil, fmt.Errorf("error parsing elastic parameter %q: %v", elasticURL, err)
}
index := uri.Path
if strings.HasPrefix(index, "/") {
index = index[1:]
}
if strings.HasSuffix(index, "/") {
index = index[:len(index)-1]
}
if index == "" {
return nil, fmt.Errorf("missing index in elastic parameter %q", elasticURL)
}
if uri.User != nil {
cfg.Username = uri.User.Username()
cfg.Password, _ = uri.User.Password()
}
uri.User = nil
if i, err := strconv.Atoi(uri.Query().Get("shards")); err == nil {
cfg.Shards = i
}
if i, err := strconv.Atoi(uri.Query().Get("replicas")); err == nil {
cfg.Replicas = i
}
if s := uri.Query().Get("sniff"); s != "" {
if b, err := strconv.ParseBool(s); err == nil {
cfg.Sniff = &b
}
}
if s := uri.Query().Get("infolog"); s != "" {
cfg.Infolog = s
}
if s := uri.Query().Get("errorlog"); s != "" {
cfg.Errorlog = s
}
if s := uri.Query().Get("tracelog"); s != "" {
cfg.Tracelog = s
}
uri.Path = ""
uri.RawQuery = ""
cfg.URL = uri.String()
cfg.Index = index
return cfg, nil
}
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