81 lines
1.7 KiB
Go
81 lines
1.7 KiB
Go
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// Copyright 2019 The OpenZipkin Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package zipkin
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import (
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"net"
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"strconv"
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"strings"
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"github.com/openzipkin/zipkin-go/model"
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)
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// NewEndpoint creates a new endpoint given the provided serviceName and
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// hostPort.
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func NewEndpoint(serviceName string, hostPort string) (*model.Endpoint, error) {
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e := &model.Endpoint{
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ServiceName: serviceName,
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}
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if hostPort == "" || hostPort == ":0" {
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if serviceName == "" {
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// if all properties are empty we should not have an Endpoint object.
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return nil, nil
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}
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return e, nil
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}
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if strings.IndexByte(hostPort, ':') < 0 {
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hostPort += ":0"
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}
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host, port, err := net.SplitHostPort(hostPort)
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if err != nil {
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return nil, err
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}
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p, err := strconv.ParseUint(port, 10, 16)
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if err != nil {
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return nil, err
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}
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e.Port = uint16(p)
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addrs, err := net.LookupIP(host)
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if err != nil {
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return nil, err
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}
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for i := range addrs {
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addr := addrs[i].To4()
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if addr == nil {
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// IPv6 - 16 bytes
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if e.IPv6 == nil {
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e.IPv6 = addrs[i].To16()
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}
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} else {
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// IPv4 - 4 bytes
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if e.IPv4 == nil {
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e.IPv4 = addr
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}
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}
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if e.IPv4 != nil && e.IPv6 != nil {
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// Both IPv4 & IPv6 have been set, done...
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break
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}
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}
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return e, nil
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}
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