-
Notifications
You must be signed in to change notification settings - Fork 482
/
selectors.go
50 lines (42 loc) · 1.45 KB
/
selectors.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
package config
import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
)
// LabelSelector defines a selector to check to see if a set of Kubernetes
// labels matches a selector.
type LabelSelector struct {
MatchLabels map[string]string `river:"match_labels,attr,optional"`
MatchExpressions []MatchExpression `river:"match_expression,block,optional"`
}
// BuildSelector builds a [labels.Selector] from a Flow LabelSelector.
func (ls *LabelSelector) BuildSelector() (labels.Selector, error) {
if ls == nil {
return metav1.LabelSelectorAsSelector(nil)
}
exprs := make([]metav1.LabelSelectorRequirement, 0, len(ls.MatchExpressions))
for _, expr := range ls.MatchExpressions {
exprs = append(exprs, expr.buildExpression())
}
return metav1.LabelSelectorAsSelector(&metav1.LabelSelector{
MatchLabels: ls.MatchLabels,
MatchExpressions: exprs,
})
}
// MatchExpression defines an expression matcher to check to see if some key
// from a Kubernetes resource matches a selector.
type MatchExpression struct {
Key string `river:"key,attr"`
Operator string `river:"operator,attr"`
Values []string `river:"values,attr,optional"`
}
func (me *MatchExpression) buildExpression() metav1.LabelSelectorRequirement {
if me == nil {
return metav1.LabelSelectorRequirement{}
}
return metav1.LabelSelectorRequirement{
Key: me.Key,
Operator: metav1.LabelSelectorOperator(me.Operator),
Values: me.Values,
}
}