yunion.io/x/cloudmux@v0.3.10-0-alpha.1/cmd/ucloudcli/main.go (about)

     1  // Copyright 2019 Yunion
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package main
    16  
    17  import (
    18  	"fmt"
    19  	"net/http"
    20  	"net/url"
    21  	"os"
    22  
    23  	"golang.org/x/net/http/httpproxy"
    24  
    25  	"yunion.io/x/structarg"
    26  
    27  	"yunion.io/x/cloudmux/pkg/cloudprovider"
    28  	"yunion.io/x/cloudmux/pkg/multicloud/ucloud"
    29  	_ "yunion.io/x/cloudmux/pkg/multicloud/ucloud/shell"
    30  	"yunion.io/x/onecloud/pkg/util/shellutils"
    31  )
    32  
    33  type BaseOptions struct {
    34  	Debug bool `help:"Show debug" default:"false"`
    35  
    36  	AccessKey  string `help:"Access key" default:"$UCLOUD_ACCESS_KEY" metavar:"UCLOUD_ACCESS_KEY"`
    37  	Secret     string `help:"Secret" default:"$UCLOUD_SECRET" metavar:"UCLOUD_SECRET"`
    38  	RegionId   string `help:"RegionId" default:"$UCLOUD_REGION" metavar:"UCLOUD_REGION"`
    39  	ProjectId  string `help:"ProjectId" default:"$UCLOUD_PROJECT" metavar:"UCLOUD_PROJECT"`
    40  	SUBCOMMAND string `help:"ucloudcli subcommand" subcommand:"true"`
    41  }
    42  
    43  func getSubcommandParser() (*structarg.ArgumentParser, error) {
    44  	parse, e := structarg.NewArgumentParserWithHelp(&BaseOptions{},
    45  		"ucloudcli",
    46  		"Command-line interface to ucloud API.",
    47  		`See "ucloudcli COMMAND --help" for help on a specific command.`)
    48  
    49  	if e != nil {
    50  		return nil, e
    51  	}
    52  
    53  	subcmd := parse.GetSubcommand()
    54  	if subcmd == nil {
    55  		return nil, fmt.Errorf("No subcommand argument.")
    56  	}
    57  	for _, v := range shellutils.CommandTable {
    58  		_, e := subcmd.AddSubParserWithHelp(v.Options, v.Command, v.Desc, v.Callback)
    59  		if e != nil {
    60  			return nil, e
    61  		}
    62  	}
    63  	return parse, nil
    64  }
    65  
    66  func showErrorAndExit(e error) {
    67  	fmt.Fprintf(os.Stderr, "%s", e)
    68  	fmt.Fprintln(os.Stderr)
    69  	os.Exit(1)
    70  }
    71  
    72  func newClient(options *BaseOptions) (*ucloud.SRegion, error) {
    73  	if len(options.AccessKey) == 0 {
    74  		return nil, fmt.Errorf("Missing accessKey")
    75  	}
    76  
    77  	if len(options.Secret) == 0 {
    78  		return nil, fmt.Errorf("Missing secret")
    79  	}
    80  
    81  	cfg := &httpproxy.Config{
    82  		HTTPProxy:  os.Getenv("HTTP_PROXY"),
    83  		HTTPSProxy: os.Getenv("HTTPS_PROXY"),
    84  		NoProxy:    os.Getenv("NO_PROXY"),
    85  	}
    86  	cfgProxyFunc := cfg.ProxyFunc()
    87  	proxyFunc := func(req *http.Request) (*url.URL, error) {
    88  		return cfgProxyFunc(req.URL)
    89  	}
    90  
    91  	cli, err := ucloud.NewUcloudClient(
    92  		ucloud.NewUcloudClientConfig(
    93  			options.AccessKey,
    94  			options.Secret,
    95  		).ProjectId(options.ProjectId).Debug(options.Debug).
    96  			CloudproviderConfig(
    97  				cloudprovider.ProviderConfig{
    98  					ProxyFunc: proxyFunc,
    99  				},
   100  			),
   101  	)
   102  	if err != nil {
   103  		return nil, err
   104  	}
   105  
   106  	region := cli.GetRegion(options.RegionId)
   107  	if region == nil {
   108  		return nil, fmt.Errorf("No such region %s", options.RegionId)
   109  	}
   110  
   111  	return region, nil
   112  }
   113  
   114  func main() {
   115  	parser, e := getSubcommandParser()
   116  	if e != nil {
   117  		showErrorAndExit(e)
   118  	}
   119  	e = parser.ParseArgs(os.Args[1:], false)
   120  	options := parser.Options().(*BaseOptions)
   121  
   122  	if parser.IsHelpSet() {
   123  		fmt.Print(parser.HelpString())
   124  		return
   125  	}
   126  	subcmd := parser.GetSubcommand()
   127  	subparser := subcmd.GetSubParser()
   128  	if e != nil || subparser == nil {
   129  		if subparser != nil {
   130  			fmt.Print(subparser.Usage())
   131  		} else {
   132  			fmt.Print(parser.Usage())
   133  		}
   134  		showErrorAndExit(e)
   135  	}
   136  	suboptions := subparser.Options()
   137  	if subparser.IsHelpSet() {
   138  		fmt.Print(subparser.HelpString())
   139  		return
   140  	}
   141  	var region *ucloud.SRegion
   142  	region, e = newClient(options)
   143  	if e != nil {
   144  		showErrorAndExit(e)
   145  	}
   146  	e = subcmd.Invoke(region, suboptions)
   147  	if e != nil {
   148  		showErrorAndExit(e)
   149  	}
   150  }