yunion.io/x/cloudmux@v0.3.10-0-alpha.1/cmd/ecloudcli/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/ecloud"
    29  	_ "yunion.io/x/cloudmux/pkg/multicloud/ecloud/shell"
    30  	"yunion.io/x/onecloud/pkg/util/shellutils"
    31  )
    32  
    33  type Options struct {
    34  	Debug        bool   `help:"Show debug" default:"false"`
    35  	AccessKey    string `help:"Access key" default:"$ECLOUD_ACCESS_KEY"`
    36  	AccessSecret string `help:"Secret" default:"$ECLOUD_ACCESS_SECRET"`
    37  	RegionId     string `help:"RegionId" default:"$ECLOUD_REGION"`
    38  	SUBCOMMAND   string `help:"ecloudcli subcommand" subcommand:"true"`
    39  }
    40  
    41  func getSubcommandParser() (*structarg.ArgumentParser, error) {
    42  	parse, e := structarg.NewArgumentParserWithHelp(&Options{},
    43  		"ecloudcli",
    44  		"Command-line interface to ecloud API.",
    45  		`See "ecloudcli COMMAND --help" for help on a specific command.`)
    46  
    47  	if e != nil {
    48  		return nil, e
    49  	}
    50  
    51  	subcmd := parse.GetSubcommand()
    52  	if subcmd == nil {
    53  		return nil, fmt.Errorf("No subcommand argument.")
    54  	}
    55  	for _, v := range shellutils.CommandTable {
    56  		_, e := subcmd.AddSubParserWithHelp(v.Options, v.Command, v.Desc, v.Callback)
    57  		if e != nil {
    58  			return nil, e
    59  		}
    60  	}
    61  	return parse, nil
    62  }
    63  
    64  func showErrorAndExit(e error) {
    65  	fmt.Fprintf(os.Stderr, "%s", e)
    66  	fmt.Fprintln(os.Stderr)
    67  	os.Exit(1)
    68  }
    69  
    70  func newClient(options *Options) (*ecloud.SRegion, error) {
    71  	if len(options.AccessKey) == 0 {
    72  		return nil, fmt.Errorf("Missing access key")
    73  	}
    74  
    75  	if len(options.AccessSecret) == 0 {
    76  		return nil, fmt.Errorf("Missing access secret")
    77  	}
    78  
    79  	cfg := &httpproxy.Config{
    80  		HTTPProxy:  os.Getenv("HTTP_PROXY"),
    81  		HTTPSProxy: os.Getenv("HTTPS_PROXY"),
    82  		NoProxy:    os.Getenv("NO_PROXY"),
    83  	}
    84  	cfgProxyFunc := cfg.ProxyFunc()
    85  	proxyFunc := func(req *http.Request) (*url.URL, error) {
    86  		return cfgProxyFunc(req.URL)
    87  	}
    88  
    89  	cli, err := ecloud.NewEcloudClient(
    90  		ecloud.NewEcloudClientConfig(
    91  			ecloud.NewRamRoleSigner(options.AccessKey, options.AccessSecret),
    92  		).SetDebug(options.Debug).
    93  			SetCloudproviderConfig(
    94  				cloudprovider.ProviderConfig{
    95  					ProxyFunc: proxyFunc,
    96  				},
    97  			),
    98  	)
    99  	if err != nil {
   100  		return nil, err
   101  	}
   102  
   103  	region, err := cli.GetRegionById(options.RegionId)
   104  	if err != nil {
   105  		return nil, err
   106  	}
   107  
   108  	return region, nil
   109  }
   110  
   111  func main() {
   112  	parser, e := getSubcommandParser()
   113  	if e != nil {
   114  		showErrorAndExit(e)
   115  	}
   116  	e = parser.ParseArgs(os.Args[1:], false)
   117  	options := parser.Options().(*Options)
   118  
   119  	if parser.IsHelpSet() {
   120  		fmt.Print(parser.HelpString())
   121  		return
   122  	}
   123  	subcmd := parser.GetSubcommand()
   124  	subparser := subcmd.GetSubParser()
   125  	if e != nil || subparser == nil {
   126  		if subparser != nil {
   127  			fmt.Print(subparser.Usage())
   128  		} else {
   129  			fmt.Print(parser.Usage())
   130  		}
   131  		showErrorAndExit(e)
   132  	}
   133  	suboptions := subparser.Options()
   134  	if subparser.IsHelpSet() {
   135  		fmt.Print(subparser.HelpString())
   136  		return
   137  	}
   138  	var region *ecloud.SRegion
   139  	region, e = newClient(options)
   140  	if e != nil {
   141  		showErrorAndExit(e)
   142  	}
   143  	e = subcmd.Invoke(region, suboptions)
   144  	if e != nil {
   145  		showErrorAndExit(e)
   146  	}
   147  }