117 lines
2.6 KiB
Go
117 lines
2.6 KiB
Go
/*
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Copyright (c) 2017 VMware, Inc. All Rights Reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package examples
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import (
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"context"
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"flag"
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"fmt"
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"net/url"
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"os"
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"strings"
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"github.com/vmware/govmomi"
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"github.com/vmware/govmomi/vim25/soap"
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)
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// getEnvString returns string from environment variable.
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func getEnvString(v string, def string) string {
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r := os.Getenv(v)
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if r == "" {
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return def
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}
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return r
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}
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// getEnvBool returns boolean from environment variable.
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func getEnvBool(v string, def bool) bool {
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r := os.Getenv(v)
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if r == "" {
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return def
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}
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switch strings.ToLower(r[0:1]) {
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case "t", "y", "1":
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return true
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}
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return false
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}
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const (
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envURL = "GOVMOMI_URL"
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envUserName = "GOVMOMI_USERNAME"
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envPassword = "GOVMOMI_PASSWORD"
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envInsecure = "GOVMOMI_INSECURE"
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)
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var urlDescription = fmt.Sprintf("ESX or vCenter URL [%s]", envURL)
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var urlFlag = flag.String("url", getEnvString(envURL, "https://username:password@host/sdk"), urlDescription)
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var insecureDescription = fmt.Sprintf("Don't verify the server's certificate chain [%s]", envInsecure)
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var insecureFlag = flag.Bool("insecure", getEnvBool(envInsecure, false), insecureDescription)
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func processOverride(u *url.URL) {
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envUsername := os.Getenv(envUserName)
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envPassword := os.Getenv(envPassword)
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// Override username if provided
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if envUsername != "" {
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var password string
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var ok bool
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if u.User != nil {
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password, ok = u.User.Password()
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}
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if ok {
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u.User = url.UserPassword(envUsername, password)
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} else {
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u.User = url.User(envUsername)
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}
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}
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// Override password if provided
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if envPassword != "" {
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var username string
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if u.User != nil {
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username = u.User.Username()
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}
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u.User = url.UserPassword(username, envPassword)
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}
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}
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// NewClient creates a govmomi.Client for use in the examples
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func NewClient(ctx context.Context) (*govmomi.Client, error) {
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flag.Parse()
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// Parse URL from string
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u, err := soap.ParseURL(*urlFlag)
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if err != nil {
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return nil, err
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}
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// Override username and/or password as required
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processOverride(u)
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// Connect and log in to ESX or vCenter
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return govmomi.NewClient(ctx, u, *insecureFlag)
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}
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