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handler.go
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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 flow
import (
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 flowHandler struct {
flows *prometheus.CounterVec
context *api.ContextOptions
}
func (h *flowHandler) Init(registry *prometheus.Registry, options api.Options) error {
c, err := api.ParseContextOptions(options)
if err != nil {
return err
}
h.context = c
labels := []string{"type", "subtype", "verdict"}
labels = append(labels, h.context.GetLabelNames()...)
h.flows = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: api.DefaultPrometheusNamespace,
Name: "flows_processed_total",
Help: "Total number of flows processed",
}, labels)
registry.MustRegister(h.flows)
return nil
}
func (h *flowHandler) Status() string {
return h.context.Status()
}
func (h *flowHandler) ProcessFlow(flow v1.Flow) {
var typeName, subType string
switch flow.GetEventType().Type {
case monitorAPI.MessageTypeAgent:
typeName = "Agent"
case monitorAPI.MessageTypeAccessLog:
typeName = "L7"
if l7 := flow.GetL7(); l7 != nil {
switch {
case l7.GetDns() != nil:
subType = "DNS"
case l7.GetHttp() != nil:
subType = "HTTP"
case l7.GetKafka() != nil:
subType = "Kafka"
}
}
case monitorAPI.MessageTypeDrop:
typeName = "Drop"
case monitorAPI.MessageTypeDebug:
typeName = "Debug"
case monitorAPI.MessageTypeCapture:
typeName = "Capture"
case monitorAPI.MessageTypeTrace:
typeName = "Trace"
subType = monitorAPI.TraceObservationPoints[uint8(flow.GetEventType().SubType)]
}
labels := []string{typeName, subType, flow.GetVerdict().String()}
labels = append(labels, h.context.GetLabelValues(flow)...)
h.flows.WithLabelValues(labels...).Inc()
}