/
handler.go
64 lines (52 loc) · 1.81 KB
/
handler.go
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// Copyright 2019 Authors of Hubble
//
// 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 drop
import (
flowpb "github.com/cilium/cilium/api/v1/flow"
v1 "github.com/cilium/cilium/pkg/hubble/api/v1"
"github.com/cilium/cilium/pkg/hubble/metrics/api"
monitorAPI "github.com/cilium/cilium/pkg/monitor/api"
"github.com/prometheus/client_golang/prometheus"
)
type dropHandler struct {
drops *prometheus.CounterVec
context *api.ContextOptions
}
func (d *dropHandler) Init(registry *prometheus.Registry, options api.Options) error {
c, err := api.ParseContextOptions(options)
if err != nil {
return err
}
d.context = c
labels := []string{"reason", "protocol"}
labels = append(labels, d.context.GetLabelNames()...)
d.drops = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: api.DefaultPrometheusNamespace,
Name: "drop_total",
Help: "Number of drops",
}, labels)
registry.MustRegister(d.drops)
return nil
}
func (d *dropHandler) Status() string {
return d.context.Status()
}
func (d *dropHandler) ProcessFlow(flow v1.Flow) {
if flow.GetVerdict() != flowpb.Verdict_DROPPED {
return
}
labels := []string{monitorAPI.DropReason(uint8(flow.GetDropReason())), v1.FlowProtocol(flow)}
labels = append(labels, d.context.GetLabelValues(flow)...)
d.drops.WithLabelValues(labels...).Inc()
}