1 files changed, 49 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/pkg/prometheus/selector/logical.go b/src/go/collectors/go.d.plugin/pkg/prometheus/selector/logical.go
new file mode 100644
index 000000000..1556d1715
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/pkg/prometheus/selector/logical.go
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package selector
+
+import (
+	"github.com/prometheus/prometheus/model/labels"
+)
+
+type (
+	trueSelector  struct{}
+	falseSelector struct{}
+	negSelector   struct{ s Selector }
+	andSelector   struct{ lhs, rhs Selector }
+	orSelector    struct{ lhs, rhs Selector }
+)
+
+func (trueSelector) Matches(_ labels.Labels) bool    { return true }
+func (falseSelector) Matches(_ labels.Labels) bool   { return false }
+func (s negSelector) Matches(lbs labels.Labels) bool { return !s.s.Matches(lbs) }
+func (s andSelector) Matches(lbs labels.Labels) bool { return s.lhs.Matches(lbs) && s.rhs.Matches(lbs) }
+func (s orSelector) Matches(lbs labels.Labels) bool  { return s.lhs.Matches(lbs) || s.rhs.Matches(lbs) }
+
+// True returns a selector which always returns true
+func True() Selector {
+	return trueSelector{}
+}
+
+// And returns a selector which returns true only if all of it's sub-selectors return true
+func And(lhs, rhs Selector, others ...Selector) Selector {
+	s := andSelector{lhs: lhs, rhs: rhs}
+	if len(others) == 0 {
+		return s
+	}
+	return And(s, others[0], others[1:]...)
+}
+
+// Or returns a selector which returns true if any of it's sub-selectors return true
+func Or(lhs, rhs Selector, others ...Selector) Selector {
+	s := orSelector{lhs: lhs, rhs: rhs}
+	if len(others) == 0 {
+		return s
+	}
+	return Or(s, others[0], others[1:]...)
+}
+
+// Not returns a selector which returns the negation of the sub-selector's result
+func Not(s Selector) Selector {
+	return negSelector{s}
+}