/
metrics.go
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/
metrics.go
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// Copyright 2016-2018 Authors of Cilium
//
// Licensed 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 ctmap
import (
"fmt"
"github.com/cilium/cilium/pkg/bpf"
"github.com/cilium/cilium/pkg/maps/nat"
"github.com/cilium/cilium/pkg/metrics"
)
type gcStats struct {
*bpf.DumpStats
// aliveEntries is the number of scanned entries that are still alive.
aliveEntries uint32
// deleted is the number of keys deleted
deleted uint32
// family is the address family
family gcFamily
// proto is the L4 protocol
proto gcProtocol
// dumpError records any error that occurred during the dump.
dumpError error
}
type gcFamily int
const (
gcFamilyIPv4 gcFamily = iota
gcFamilyIPv6
)
func (g gcFamily) String() string {
switch g {
case gcFamilyIPv4:
return "ipv4"
case gcFamilyIPv6:
return "ipv6"
default:
return "unknown"
}
}
type gcProtocol int
const (
gcProtocolAny gcProtocol = iota
gcProtocolTCP
)
func (g gcProtocol) String() string {
switch g {
case gcProtocolAny:
return "non-TCP"
case gcProtocolTCP:
return "TCP"
default:
return fmt.Sprintf("unknown (%d)", int(g))
}
}
func statStartGc(m *Map) gcStats {
result := gcStats{
DumpStats: bpf.NewDumpStats(&m.Map),
}
if m.mapType.isIPv6() {
result.family = gcFamilyIPv6
} else {
result.family = gcFamilyIPv4
}
if m.mapType.isTCP() {
result.proto = gcProtocolTCP
} else {
result.proto = gcProtocolAny
}
return result
}
func (s *gcStats) finish() {
duration := s.Duration()
family := s.family.String()
switch s.family {
case gcFamilyIPv6:
metrics.ConntrackDumpResets.With(labelIPv6CTDumpInterrupts).Add(float64(s.Interrupted))
case gcFamilyIPv4:
metrics.ConntrackDumpResets.With(labelIPv4CTDumpInterrupts).Add(float64(s.Interrupted))
}
proto := s.proto.String()
var status string
if s.Completed {
status = "completed"
metrics.ConntrackGCSize.WithLabelValues(family, proto, metricsAlive).Set(float64(s.aliveEntries))
metrics.ConntrackGCSize.WithLabelValues(family, proto, metricsDeleted).Set(float64(s.deleted))
} else {
status = "uncompleted"
scopedLog := log.WithField("interrupted", s.Interrupted)
if s.dumpError != nil {
scopedLog = scopedLog.WithError(s.dumpError)
}
scopedLog.Warningf("Garbage collection on %s %s CT map failed to finish", family, proto)
}
metrics.ConntrackGCRuns.WithLabelValues(family, proto, status).Inc()
metrics.ConntrackGCDuration.WithLabelValues(family, proto, status).Observe(duration.Seconds())
metrics.ConntrackGCKeyFallbacks.WithLabelValues(family, proto).Add(float64(s.KeyFallback))
}
type NatGCStats struct {
*bpf.DumpStats
// family is the address family
Family gcFamily
IngressAlive uint32
IngressDeleted uint32
EgressDeleted uint32
// It's not possible with the current PurgeOrphanNATEntries implementation
// to correctly count EgressAlive, so skip it
}
func newNatGCStats(m *nat.Map, family gcFamily) NatGCStats {
return NatGCStats{
DumpStats: m.DumpStats(),
Family: family,
}
}
func (s *NatGCStats) finish() {
family := s.Family.String()
metrics.NatGCSize.WithLabelValues(family, metricsIngress, metricsAlive).Set(float64(s.IngressAlive))
metrics.NatGCSize.WithLabelValues(family, metricsIngress, metricsDeleted).Set(float64(s.IngressDeleted))
metrics.NatGCSize.WithLabelValues(family, metricsEgress, metricsDeleted).Set(float64(s.EgressDeleted))
}