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