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host.go
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host.go
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package host
import (
"context"
"net/url"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/common/cfgwarn"
"github.com/elastic/beats/metricbeat/mb"
"github.com/pkg/errors"
"github.com/vmware/govmomi"
"github.com/vmware/govmomi/find"
"github.com/vmware/govmomi/property"
"github.com/vmware/govmomi/vim25"
"github.com/vmware/govmomi/vim25/mo"
"github.com/vmware/govmomi/vim25/types"
)
func init() {
if err := mb.Registry.AddMetricSet("vsphere", "host", New); err != nil {
panic(err)
}
}
type MetricSet struct {
mb.BaseMetricSet
Client *vim25.Client
}
func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
cfgwarn.Experimental("The vsphere host metricset is experimental")
config := struct {
Username string `config:"username"`
Password string `config:"password"`
Insecure bool `config:"insecure"`
}{}
if err := base.Module().UnpackConfig(&config); err != nil {
return nil, err
}
u, err := url.Parse(base.HostData().URI)
if err != nil {
return nil, err
}
u.User = url.UserPassword(config.Username, config.Password)
c, err := govmomi.NewClient(context.TODO(), u, config.Insecure)
if err != nil {
return nil, err
}
return &MetricSet{
BaseMetricSet: base,
Client: c.Client,
}, nil
}
func (m *MetricSet) Fetch() ([]common.MapStr, error) {
f := find.NewFinder(m.Client, true)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Get all data centers.
dcs, err := f.DatacenterList(ctx, "*")
if err != nil {
return nil, err
}
events := []common.MapStr{}
for _, dc := range dcs {
f.SetDatacenter(dc)
hss, err := f.HostSystemList(ctx, "*")
if err != nil {
return nil, errors.Wrap(err, "failed to get hostsystem list")
}
pc := property.DefaultCollector(m.Client)
// Convert hosts into list of references.
var refs []types.ManagedObjectReference
for _, hs := range hss {
refs = append(refs, hs.Reference())
}
// Retrieve summary property (HostListSummary).
var hst []mo.HostSystem
err = pc.Retrieve(ctx, refs, []string{"summary"}, &hst)
if err != nil {
return nil, err
}
for _, hs := range hst {
totalCpu := int64(hs.Summary.Hardware.CpuMhz) * int64(hs.Summary.Hardware.NumCpuCores)
freeCpu := int64(totalCpu) - int64(hs.Summary.QuickStats.OverallCpuUsage)
freeMemory := int64(hs.Summary.Hardware.MemorySize) - (int64(hs.Summary.QuickStats.OverallMemoryUsage) * 1024 * 1024)
event := common.MapStr{
"datacenter": dc.Name(),
"name": hs.Summary.Config.Name,
"cpu": common.MapStr{
"used": common.MapStr{
"mhz": hs.Summary.QuickStats.OverallCpuUsage,
},
"total": common.MapStr{
"mhz": totalCpu,
},
"free": common.MapStr{
"mhz": freeCpu,
},
},
"memory": common.MapStr{
"used": common.MapStr{
"bytes": (int64(hs.Summary.QuickStats.OverallMemoryUsage) * 1024 * 1024),
},
"total": common.MapStr{
"bytes": hs.Summary.Hardware.MemorySize,
},
"free": common.MapStr{
"bytes": freeMemory,
},
},
}
events = append(events, event)
}
}
return events, nil
}