github.com/vmware/govmomi@v0.43.0/govc/cluster/group/info_flag.go (about)

     1  /*
     2  Copyright (c) 2017 VMware, Inc. All Rights Reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package group
    18  
    19  import (
    20  	"context"
    21  	"flag"
    22  	"fmt"
    23  
    24  	"github.com/vmware/govmomi/govc/flags"
    25  	"github.com/vmware/govmomi/vim25/types"
    26  )
    27  
    28  type InfoFlag struct {
    29  	*flags.ClusterFlag
    30  
    31  	groups []types.BaseClusterGroupInfo
    32  
    33  	name string
    34  }
    35  
    36  func NewInfoFlag(ctx context.Context) (*InfoFlag, context.Context) {
    37  	f := &InfoFlag{}
    38  	f.ClusterFlag, ctx = flags.NewClusterFlag(ctx)
    39  	return f, ctx
    40  }
    41  
    42  func (f *InfoFlag) Register(ctx context.Context, fs *flag.FlagSet) {
    43  	f.ClusterFlag.Register(ctx, fs)
    44  
    45  	fs.StringVar(&f.name, "name", "", "Cluster group name")
    46  }
    47  
    48  func (f *InfoFlag) Process(ctx context.Context) error {
    49  	return f.ClusterFlag.Process(ctx)
    50  }
    51  
    52  func (f *InfoFlag) Groups(ctx context.Context) ([]types.BaseClusterGroupInfo, error) {
    53  	if f.groups != nil {
    54  		return f.groups, nil
    55  	}
    56  
    57  	cluster, err := f.Cluster()
    58  	if err != nil {
    59  		return nil, err
    60  	}
    61  
    62  	config, err := cluster.Configuration(ctx)
    63  	if err != nil {
    64  		return nil, err
    65  	}
    66  
    67  	f.groups = config.Group
    68  
    69  	return f.groups, nil
    70  }
    71  
    72  type ClusterGroupInfo struct {
    73  	info types.BaseClusterGroupInfo
    74  
    75  	refs *[]types.ManagedObjectReference
    76  
    77  	kind string
    78  }
    79  
    80  func newGroupInfo(info types.BaseClusterGroupInfo) *ClusterGroupInfo {
    81  	group := &ClusterGroupInfo{info: info}
    82  
    83  	switch info := info.(type) {
    84  	case *types.ClusterHostGroup:
    85  		group.refs = &info.Host
    86  		group.kind = "HostSystem"
    87  	case *types.ClusterVmGroup:
    88  		group.refs = &info.Vm
    89  		group.kind = "VirtualMachine"
    90  	}
    91  
    92  	return group
    93  }
    94  
    95  func (f *InfoFlag) Group(ctx context.Context) (*ClusterGroupInfo, error) {
    96  	groups, err := f.Groups(ctx)
    97  	if err != nil {
    98  		return nil, err
    99  	}
   100  
   101  	for _, group := range groups {
   102  		if group.GetClusterGroupInfo().Name == f.name {
   103  			return newGroupInfo(group), nil
   104  		}
   105  	}
   106  
   107  	return nil, fmt.Errorf("group %q not found", f.name)
   108  }
   109  
   110  func (f *InfoFlag) Apply(ctx context.Context, update types.ArrayUpdateSpec, info types.BaseClusterGroupInfo) error {
   111  	spec := &types.ClusterConfigSpecEx{
   112  		GroupSpec: []types.ClusterGroupSpec{
   113  			{
   114  				ArrayUpdateSpec: update,
   115  				Info:            info,
   116  			},
   117  		},
   118  	}
   119  
   120  	return f.Reconfigure(ctx, spec)
   121  }