github.com/vmware/govmomi@v0.51.0/cli/host/vswitch/info.go (about)

     1  // © Broadcom. All Rights Reserved.
     2  // The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
     3  // SPDX-License-Identifier: Apache-2.0
     4  
     5  package vswitch
     6  
     7  import (
     8  	"context"
     9  	"flag"
    10  	"fmt"
    11  	"io"
    12  	"strings"
    13  	"text/tabwriter"
    14  
    15  	"github.com/vmware/govmomi/cli"
    16  	"github.com/vmware/govmomi/cli/flags"
    17  	"github.com/vmware/govmomi/property"
    18  	"github.com/vmware/govmomi/vim25/mo"
    19  	"github.com/vmware/govmomi/vim25/types"
    20  )
    21  
    22  type info struct {
    23  	*flags.ClientFlag
    24  	*flags.OutputFlag
    25  	*flags.HostSystemFlag
    26  }
    27  
    28  func init() {
    29  	cli.Register("host.vswitch.info", &info{})
    30  }
    31  
    32  func (cmd *info) Register(ctx context.Context, f *flag.FlagSet) {
    33  	cmd.ClientFlag, ctx = flags.NewClientFlag(ctx)
    34  	cmd.ClientFlag.Register(ctx, f)
    35  	cmd.OutputFlag, ctx = flags.NewOutputFlag(ctx)
    36  	cmd.OutputFlag.Register(ctx, f)
    37  	cmd.HostSystemFlag, ctx = flags.NewHostSystemFlag(ctx)
    38  	cmd.HostSystemFlag.Register(ctx, f)
    39  }
    40  
    41  func (cmd *info) Process(ctx context.Context) error {
    42  	if err := cmd.ClientFlag.Process(ctx); err != nil {
    43  		return err
    44  	}
    45  	if err := cmd.OutputFlag.Process(ctx); err != nil {
    46  		return err
    47  	}
    48  	if err := cmd.HostSystemFlag.Process(ctx); err != nil {
    49  		return err
    50  	}
    51  	return nil
    52  }
    53  
    54  func (cmd *info) Run(ctx context.Context, f *flag.FlagSet) error {
    55  	client, err := cmd.Client()
    56  	if err != nil {
    57  		return err
    58  	}
    59  
    60  	ns, err := cmd.HostNetworkSystem()
    61  	if err != nil {
    62  		return err
    63  	}
    64  
    65  	var mns mo.HostNetworkSystem
    66  
    67  	pc := property.DefaultCollector(client)
    68  	err = pc.RetrieveOne(ctx, ns.Reference(), []string{"networkInfo.vswitch"}, &mns)
    69  	if err != nil {
    70  		return err
    71  	}
    72  
    73  	r := &infoResult{mns.NetworkInfo.Vswitch}
    74  
    75  	return cmd.WriteResult(r)
    76  }
    77  
    78  type infoResult struct {
    79  	Vswitch []types.HostVirtualSwitch `json:"vswitch"`
    80  }
    81  
    82  func (r *infoResult) Write(w io.Writer) error {
    83  	tw := tabwriter.NewWriter(w, 2, 0, 2, ' ', 0)
    84  
    85  	for i, s := range r.Vswitch {
    86  		if i > 0 {
    87  			fmt.Fprintln(tw)
    88  		}
    89  		fmt.Fprintf(tw, "Name:\t%s\n", s.Name)
    90  		fmt.Fprintf(tw, "Portgroup:\t%s\n", keys("key-vim.host.PortGroup-", s.Portgroup))
    91  		fmt.Fprintf(tw, "Pnic:\t%s\n", keys("key-vim.host.PhysicalNic-", s.Pnic))
    92  		fmt.Fprintf(tw, "MTU:\t%d\n", s.Mtu)
    93  		fmt.Fprintf(tw, "Ports:\t%d\n", s.NumPorts)
    94  		fmt.Fprintf(tw, "Ports Available:\t%d\n", s.NumPortsAvailable)
    95  		HostNetworkPolicy(tw, s.Spec.Policy)
    96  	}
    97  
    98  	return tw.Flush()
    99  }
   100  
   101  func keys(key string, vals []string) string {
   102  	for i, val := range vals {
   103  		vals[i] = strings.TrimPrefix(val, key)
   104  	}
   105  	return strings.Join(vals, ", ")
   106  }
   107  
   108  func enabled(b *bool) string {
   109  	if b != nil && *b {
   110  		return "Yes"
   111  	}
   112  	return "No"
   113  }
   114  
   115  func HostNetworkPolicy(w io.Writer, p *types.HostNetworkPolicy) {
   116  	if p == nil || p.Security == nil {
   117  		return // e.g. Workstation
   118  	}
   119  	fmt.Fprintf(w, "Allow promiscuous mode:\t%s\n", enabled(p.Security.AllowPromiscuous))
   120  	fmt.Fprintf(w, "Allow forged transmits:\t%s\n", enabled(p.Security.ForgedTransmits))
   121  	fmt.Fprintf(w, "Allow MAC changes:\t%s\n", enabled(p.Security.MacChanges))
   122  }