youtubebeat/vendor/github.com/elastic/beats/metricbeat/module/vsphere/virtualmachine/virtualmachine.go

281 lines
7.1 KiB
Go

// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package virtualmachine
import (
"context"
"fmt"
"net/url"
"strings"
"sync"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/common/cfgwarn"
"github.com/elastic/beats/libbeat/logp"
"github.com/elastic/beats/metricbeat/mb"
"github.com/pkg/errors"
"github.com/vmware/govmomi"
"github.com/vmware/govmomi/object"
"github.com/vmware/govmomi/property"
"github.com/vmware/govmomi/view"
"github.com/vmware/govmomi/vim25"
"github.com/vmware/govmomi/vim25/mo"
"github.com/vmware/govmomi/vim25/types"
)
func init() {
mb.Registry.MustAddMetricSet("vsphere", "virtualmachine", New,
mb.DefaultMetricSet(),
)
}
type MetricSet struct {
mb.BaseMetricSet
HostURL *url.URL
Insecure bool
GetCustomFields bool
}
func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
cfgwarn.Beta("The vsphere virtualmachine metricset is beta")
config := struct {
Username string `config:"username"`
Password string `config:"password"`
Insecure bool `config:"insecure"`
GetCustomFields bool `config:"get_custom_fields"`
}{
GetCustomFields: false,
}
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)
return &MetricSet{
BaseMetricSet: base,
HostURL: u,
Insecure: config.Insecure,
GetCustomFields: config.GetCustomFields,
}, nil
}
func (m *MetricSet) Fetch() ([]common.MapStr, error) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
var events []common.MapStr
client, err := govmomi.NewClient(ctx, m.HostURL, m.Insecure)
if err != nil {
return nil, err
}
defer client.Logout(ctx)
c := client.Client
// Get custom fields (attributes) names if get_custom_fields is true.
customFieldsMap := make(map[int32]string)
if m.GetCustomFields {
var err error
customFieldsMap, err = setCustomFieldsMap(ctx, c)
if err != nil {
return nil, err
}
}
// Create view of VirtualMachine objects
mgr := view.NewManager(c)
v, err := mgr.CreateContainerView(ctx, c.ServiceContent.RootFolder, []string{"VirtualMachine"}, true)
if err != nil {
return nil, err
}
defer v.Destroy(ctx)
// Retrieve summary property for all machines
var vmt []mo.VirtualMachine
err = v.Retrieve(ctx, []string{"VirtualMachine"}, []string{"summary"}, &vmt)
if err != nil {
return nil, err
}
var wg sync.WaitGroup
var mutex sync.Mutex
for _, vm := range vmt {
wg.Add(1)
go func(vm mo.VirtualMachine, c *vim25.Client) {
defer wg.Done()
freeMemory := (int64(vm.Summary.Config.MemorySizeMB) * 1024 * 1024) - (int64(vm.Summary.QuickStats.GuestMemoryUsage) * 1024 * 1024)
event := common.MapStr{
"host": vm.Summary.Runtime.Host.Value,
"name": vm.Summary.Config.Name,
"cpu": common.MapStr{
"used": common.MapStr{
"mhz": vm.Summary.QuickStats.OverallCpuUsage,
},
},
"memory": common.MapStr{
"used": common.MapStr{
"guest": common.MapStr{
"bytes": (int64(vm.Summary.QuickStats.GuestMemoryUsage) * 1024 * 1024),
},
"host": common.MapStr{
"bytes": (int64(vm.Summary.QuickStats.HostMemoryUsage) * 1024 * 1024),
},
},
"total": common.MapStr{
"guest": common.MapStr{
"bytes": (int64(vm.Summary.Config.MemorySizeMB) * 1024 * 1024),
},
},
"free": common.MapStr{
"guest": common.MapStr{
"bytes": freeMemory,
},
},
},
}
// Get custom fields (attributes) values if get_custom_fields is true.
if m.GetCustomFields {
customFields := getCustomFields(vm.Summary.CustomValue, customFieldsMap)
if len(customFields) > 0 {
event["custom_fields"] = customFields
}
}
if vm.Summary.Vm != nil {
networkNames, err := getNetworkNames(c, vm.Summary.Vm.Reference())
if err != nil {
logp.Debug("vsphere", err.Error())
} else {
if len(networkNames) > 0 {
event["network_names"] = networkNames
}
}
}
mutex.Lock()
events = append(events, event)
mutex.Unlock()
}(vm, c)
}
wg.Wait()
return events, nil
}
func getCustomFields(customFields []types.BaseCustomFieldValue, customFieldsMap map[int32]string) common.MapStr {
outputFields := common.MapStr{}
for _, v := range customFields {
customFieldString := v.(*types.CustomFieldStringValue)
key, ok := customFieldsMap[v.GetCustomFieldValue().Key]
if ok {
// If key has '.', is replaced with '_' to be compatible with ES2.x.
fmtKey := strings.Replace(key, ".", "_", -1)
outputFields.Put(fmtKey, customFieldString.Value)
}
}
return outputFields
}
func getNetworkNames(c *vim25.Client, ref types.ManagedObjectReference) ([]string, error) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
var outputNetworkNames []string
pc := property.DefaultCollector(c)
var vm mo.VirtualMachine
err := pc.RetrieveOne(ctx, ref, []string{"network"}, &vm)
if err != nil {
return nil, fmt.Errorf("error retrieving virtual machine information: %v", err)
}
if len(vm.Network) == 0 {
return nil, errors.New("no networks found")
}
var networkRefs []types.ManagedObjectReference
for _, obj := range vm.Network {
if obj.Type == "Network" {
networkRefs = append(networkRefs, obj)
}
}
// If only "Distributed port group" was found, for example.
if len(networkRefs) == 0 {
return nil, errors.New("no networks found")
}
var nets []mo.Network
err = pc.Retrieve(ctx, networkRefs, []string{"name"}, &nets)
if err != nil {
return nil, fmt.Errorf("error retrieving network from virtual machine: %v", err)
}
for _, net := range nets {
name := strings.Replace(net.Name, ".", "_", -1)
outputNetworkNames = append(outputNetworkNames, name)
}
return outputNetworkNames, nil
}
func setCustomFieldsMap(ctx context.Context, client *vim25.Client) (map[int32]string, error) {
customFieldsMap := make(map[int32]string)
customFieldsManager, err := object.GetCustomFieldsManager(client)
if err != nil {
return nil, errors.Wrap(err, "failed to get custom fields manager")
} else {
field, err := customFieldsManager.Field(ctx)
if err != nil {
return nil, errors.Wrap(err, "failed to get custom fields")
}
for _, def := range field {
customFieldsMap[def.Key] = def.Name
}
}
return customFieldsMap, nil
}