-
Notifications
You must be signed in to change notification settings - Fork 41
/
kube_provider.go
147 lines (124 loc) · 4.17 KB
/
kube_provider.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
// 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 fetchers
import (
"reflect"
"github.com/elastic/elastic-agent-autodiscover/kubernetes"
"github.com/elastic/elastic-agent-libs/logp"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/elastic/cloudbeat/internal/resources/fetching"
"github.com/elastic/cloudbeat/internal/resources/fetching/cycle"
)
type K8sResource struct {
log *logp.Logger
Data any
}
const (
k8sObjMetadataField = "ObjectMeta"
k8sTypeMetadataField = "TypeMeta"
K8sObjType = "k8s_object"
ecsResourceTypeField = "orchestrator.resource.type"
ecsResourceIdField = "orchestrator.resource.id"
ecsResourceNameField = "orchestrator.resource.name"
)
func getKubeData(log *logp.Logger, watchers []kubernetes.Watcher, resCh chan fetching.ResourceInfo, cycleMetadata cycle.Metadata) {
log.Debug("Starting getKubeData")
for _, watcher := range watchers {
rs := watcher.Store().List()
for _, r := range rs {
nullifyManagedFields(r)
resource, ok := r.(kubernetes.Resource)
if !ok {
log.Errorf("Bad resource: %#v does not implement kubernetes.Resource", r)
continue
}
err := addTypeInformationToKubeResource(resource)
if err != nil {
log.Errorf("Bad resource: %v", err)
continue
} // See https://github.com/kubernetes/kubernetes/issues/3030
resCh <- fetching.ResourceInfo{Resource: K8sResource{log, resource}, CycleMetadata: cycleMetadata}
}
}
}
func (r K8sResource) GetData() any {
return r.Data
}
func (r K8sResource) GetMetadata() (fetching.ResourceMetadata, error) {
k8sObj := reflect.Indirect(reflect.ValueOf(r.Data))
k8sObjMeta := getK8sObjectMeta(r.log, k8sObj)
resourceID := k8sObjMeta.UID
resourceName := k8sObjMeta.Name
return fetching.ResourceMetadata{
ID: string(resourceID),
Type: K8sObjType,
SubType: getK8sSubType(r.log, k8sObj),
Name: resourceName,
}, nil
}
func (r K8sResource) GetElasticCommonData() (map[string]any, error) {
metadata, err := r.GetMetadata()
if err != nil {
return nil, err
}
fields := map[string]any{
ecsResourceTypeField: metadata.SubType,
ecsResourceNameField: metadata.Name,
ecsResourceIdField: metadata.ID,
}
return fields, nil
}
func getK8sObjectMeta(log *logp.Logger, k8sObj reflect.Value) metav1.ObjectMeta {
metadata, ok := k8sObj.FieldByName(k8sObjMetadataField).Interface().(metav1.ObjectMeta)
if !ok {
log.Errorf("Failed to retrieve object metadata, Resource: %#v", k8sObj)
return metav1.ObjectMeta{}
}
return metadata
}
func getK8sSubType(log *logp.Logger, k8sObj reflect.Value) string {
typeMeta, ok := k8sObj.FieldByName(k8sTypeMetadataField).Interface().(metav1.TypeMeta)
if !ok {
log.Errorf("Failed to retrieve type metadata, Resource: %#v", k8sObj)
return ""
}
return typeMeta.Kind
}
// nullifyManagedFields ManagedFields field contains fields with dot that prevent from elasticsearch to index
// the events.
func nullifyManagedFields(resource any) {
switch val := resource.(type) {
case *kubernetes.Pod:
val.ManagedFields = nil
case *kubernetes.Role:
val.ManagedFields = nil
case *kubernetes.RoleBinding:
val.ManagedFields = nil
case *kubernetes.ClusterRole:
val.ManagedFields = nil
case *kubernetes.ClusterRoleBinding:
val.ManagedFields = nil
case *kubernetes.PodSecurityPolicy:
val.ManagedFields = nil
case *kubernetes.ServiceAccount:
val.ManagedFields = nil
case *kubernetes.NetworkPolicy:
val.ManagedFields = nil
case *kubernetes.Node:
val.ManagedFields = nil
}
}