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// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package common
import (
"fmt"
"net"
"net/url"
"regexp"
"strconv"
"strings"
)
var hasScheme = regexp.MustCompile(`^([a-z][a-z0-9+\-.]*)://`)
// MakeURL creates the url based on the url configuration.
// Adds missing parts with defaults (scheme, host, port)
func MakeURL(defaultScheme string, defaultPath string, rawURL string, defaultPort int) (string, error) {
if defaultScheme == "" {
defaultScheme = "http"
}
if !hasScheme.MatchString(rawURL) {
rawURL = fmt.Sprintf("%v://%v", defaultScheme, rawURL)
}
addr, err := url.Parse(rawURL)
if err != nil {
return "", err
}
scheme := addr.Scheme
host := addr.Host
port := strconv.Itoa(defaultPort)
if host == "" {
host = "localhost"
} else {
// split host and optional port
if splitHost, splitPort, err := net.SplitHostPort(host); err == nil {
host = splitHost
port = splitPort
}
// Check if ipv6
if strings.Count(host, ":") > 1 && strings.Count(host, "]") == 0 {
host = "[" + host + "]"
}
}
// Assign default path if not set
if addr.Path == "" {
addr.Path = defaultPath
}
// reconstruct url
addr.Scheme = scheme
addr.Host = host + ":" + port
return addr.String(), nil
}
func EncodeURLParams(url string, params url.Values) string {
if len(params) == 0 {
return url
}
return strings.Join([]string{url, "?", params.Encode()}, "")
}
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