141 lines
2.8 KiB
Go
141 lines
2.8 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 metric
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import (
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"context"
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"encoding/json"
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"flag"
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"fmt"
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"io"
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"text/tabwriter"
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"github.com/vmware/govmomi/govc/cli"
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"github.com/vmware/govmomi/performance"
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"github.com/vmware/govmomi/vim25/types"
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)
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type ls struct {
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*PerformanceFlag
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long bool
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}
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func init() {
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cli.Register("metric.ls", &ls{})
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}
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func (cmd *ls) Register(ctx context.Context, f *flag.FlagSet) {
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cmd.PerformanceFlag, ctx = NewPerformanceFlag(ctx)
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cmd.PerformanceFlag.Register(ctx, f)
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f.BoolVar(&cmd.long, "l", false, "Long listing format")
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}
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func (cmd *ls) Usage() string {
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return "PATH"
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}
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func (cmd *ls) Description() string {
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return `List available metrics for PATH.
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Examples:
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govc metric.ls /dc1/host/cluster1
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govc metric.ls datastore/*
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govc metric.ls vm/* | grep mem. | xargs govc metric.sample vm/*`
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}
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func (cmd *ls) Process(ctx context.Context) error {
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if err := cmd.PerformanceFlag.Process(ctx); err != nil {
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return err
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}
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return nil
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}
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type lsResult struct {
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cmd *ls
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counters map[int32]*types.PerfCounterInfo
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performance.MetricList
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}
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func (r *lsResult) Write(w io.Writer) error {
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tw := tabwriter.NewWriter(w, 2, 0, 2, ' ', 0)
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for _, id := range r.MetricList {
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if id.Instance != "" {
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continue
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}
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info := r.counters[id.CounterId]
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if r.cmd.long {
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fmt.Fprintf(w, "%s\t%s\n", info.Name(),
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info.NameInfo.GetElementDescription().Label)
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continue
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}
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fmt.Fprintln(w, info.Name())
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}
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return tw.Flush()
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}
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func (r *lsResult) MarshalJSON() ([]byte, error) {
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m := make(map[string]*types.PerfCounterInfo)
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for _, id := range r.MetricList {
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info := r.counters[id.CounterId]
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m[info.Name()] = info
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}
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return json.Marshal(m)
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}
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func (cmd *ls) Run(ctx context.Context, f *flag.FlagSet) error {
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if f.NArg() != 1 {
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return flag.ErrHelp
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}
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objs, err := cmd.ManagedObjects(ctx, f.Args())
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if err != nil {
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return err
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}
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m, err := cmd.Manager(ctx)
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if err != nil {
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return err
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}
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s, err := m.ProviderSummary(ctx, objs[0])
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if err != nil {
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return err
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}
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mids, err := m.AvailableMetric(ctx, objs[0], cmd.Interval(s.RefreshRate))
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if err != nil {
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return err
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}
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counters, err := m.CounterInfoByKey(ctx)
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if err != nil {
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return err
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}
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return cmd.WriteResult(&lsResult{cmd, counters, mids})
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}
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