Create UDP collector that listens to UDP messages from monitor.lua and exposes them on /metrics endpoint
This commit is contained in:
Francisco Mejia
parent
764bcd5a1b
commit
2cd2da7c3f
13 changed files with 575 additions and 746 deletions
277
internal/ingress/metric/collector/udp_collector.go
Normal file
277
internal/ingress/metric/collector/udp_collector.go
Normal file
|
|
@ -0,0 +1,277 @@
|
|||
/*
|
||||
Copyright 2016 The Kubernetes Authors.
|
||||
|
||||
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 collector
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"net"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/golang/glog"
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
)
|
||||
|
||||
type udpData struct {
|
||||
Host string `json:"host"` // Label
|
||||
Status string `json:"status"` // Label
|
||||
|
||||
RealIPAddress string `json:"realIpAddr"` // Label
|
||||
RemoteAddress string `json:"remoteAddr"` // Label
|
||||
RemoteUser string `json:"remoteUser"` // Label
|
||||
|
||||
BytesSent float64 `json:"bytesSent"` // Metric
|
||||
|
||||
Protocol string `json:"protocol"` // Label
|
||||
Method string `json:"method"` // Label
|
||||
URI string `json:"uri"` // Label
|
||||
|
||||
RequestLength float64 `json:"requestLength"` // Metric
|
||||
RequestTime float64 `json:"requestTime"` // Metric
|
||||
|
||||
UpstreamName string `json:"upstreamName"` // Label
|
||||
UpstreamIP string `json:"upstreamIP"` // Label
|
||||
UpstreamResponseTime float64 `json:"upstreamResponseTime"` // Metric
|
||||
UpstreamStatus string `json:"upstreamStatus"` // Label
|
||||
|
||||
Namespace string `json:"namespace"` // Label
|
||||
Ingress string `json:"ingress"` // Label
|
||||
Service string `json:"service"` // Label
|
||||
}
|
||||
|
||||
// UDPCollector stores prometheus metrics and ingress meta-data
|
||||
type UDPCollector struct {
|
||||
upstreamResponseTime *prometheus.HistogramVec
|
||||
requestTime *prometheus.HistogramVec
|
||||
requestLength *prometheus.HistogramVec
|
||||
bytesSent *prometheus.HistogramVec
|
||||
collectorSuccess *prometheus.GaugeVec
|
||||
collectorSuccessTime *prometheus.GaugeVec
|
||||
requests *prometheus.CounterVec
|
||||
listener *net.UDPConn
|
||||
ns string
|
||||
ingressClass string
|
||||
port int
|
||||
}
|
||||
|
||||
// InitUDPCollector creates a new UDPCollector instance
|
||||
func InitUDPCollector(ns string, class string, port int) error {
|
||||
sc := UDPCollector{}
|
||||
|
||||
ns = strings.Replace(ns, "-", "_", -1)
|
||||
|
||||
listener, err := newUDPListener(port)
|
||||
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
sc.listener = listener
|
||||
sc.ns = ns
|
||||
sc.ingressClass = class
|
||||
sc.port = port
|
||||
|
||||
requestTags := []string{"host", "status", "remote_address", "real_ip_address", "remote_user", "protocol", "method", "uri", "upstream_name", "upstream_ip", "upstream_status", "namespace", "ingress", "service"}
|
||||
collectorTags := []string{"namespace", "ingress_class"}
|
||||
|
||||
sc.upstreamResponseTime = prometheus.NewHistogramVec(
|
||||
prometheus.HistogramOpts{
|
||||
Name: "upstream_response_time_seconds",
|
||||
Help: "The time spent on receiving the response from the upstream server",
|
||||
Namespace: ns,
|
||||
},
|
||||
requestTags,
|
||||
)
|
||||
|
||||
sc.requestTime = prometheus.NewHistogramVec(
|
||||
prometheus.HistogramOpts{
|
||||
Name: "request_duration_seconds",
|
||||
Help: "The request processing time in seconds",
|
||||
Namespace: ns,
|
||||
},
|
||||
requestTags,
|
||||
)
|
||||
|
||||
sc.requestLength = prometheus.NewHistogramVec(
|
||||
prometheus.HistogramOpts{
|
||||
Name: "request_length_bytes",
|
||||
Help: "The request length (including request line, header, and request body)",
|
||||
Namespace: ns,
|
||||
Buckets: prometheus.LinearBuckets(10, 10, 10), // 10 buckets, each 10 bytes wide.
|
||||
},
|
||||
requestTags,
|
||||
)
|
||||
|
||||
sc.requests = prometheus.NewCounterVec(
|
||||
prometheus.CounterOpts{
|
||||
Name: "requests",
|
||||
Help: "The total number of client requests.",
|
||||
Namespace: ns,
|
||||
},
|
||||
collectorTags,
|
||||
)
|
||||
|
||||
sc.bytesSent = prometheus.NewHistogramVec(
|
||||
prometheus.HistogramOpts{
|
||||
Name: "bytes_sent",
|
||||
Help: "The the number of bytes sent to a client",
|
||||
Namespace: ns,
|
||||
Buckets: prometheus.ExponentialBuckets(10, 10, 7), // 7 buckets, exponential factor of 10.
|
||||
},
|
||||
requestTags,
|
||||
)
|
||||
|
||||
sc.collectorSuccess = prometheus.NewGaugeVec(
|
||||
prometheus.GaugeOpts{
|
||||
Name: "collector_last_run_successful",
|
||||
Help: "Whether the last collector run was successful (success = 1, failure = 0).",
|
||||
Namespace: ns,
|
||||
},
|
||||
collectorTags,
|
||||
)
|
||||
|
||||
sc.collectorSuccessTime = prometheus.NewGaugeVec(
|
||||
prometheus.GaugeOpts{
|
||||
Name: "collector_last_run_successful_timestamp_seconds",
|
||||
Help: "Timestamp of the last successful collector run",
|
||||
Namespace: ns,
|
||||
},
|
||||
collectorTags,
|
||||
)
|
||||
|
||||
prometheus.MustRegister(sc.upstreamResponseTime)
|
||||
prometheus.MustRegister(sc.requestTime)
|
||||
prometheus.MustRegister(sc.requestLength)
|
||||
prometheus.MustRegister(sc.requests)
|
||||
prometheus.MustRegister(sc.bytesSent)
|
||||
prometheus.MustRegister(sc.collectorSuccess)
|
||||
prometheus.MustRegister(sc.collectorSuccessTime)
|
||||
|
||||
go sc.Run()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (sc *UDPCollector) handleMessage(msg []byte) {
|
||||
glog.V(5).Infof("msg: %v", string(msg))
|
||||
|
||||
collectorSuccess := true
|
||||
|
||||
// Unmarshall bytes
|
||||
var stats udpData
|
||||
err := json.Unmarshal(msg, &stats)
|
||||
if err != nil {
|
||||
glog.Errorf("Unexpected error deserializing JSON paylod: %v", err)
|
||||
collectorSuccess = false
|
||||
return
|
||||
}
|
||||
|
||||
// Create Request Labels Map
|
||||
requestLabels := prometheus.Labels{
|
||||
"host": stats.Host,
|
||||
"status": stats.Status,
|
||||
"remote_address": stats.RemoteAddress,
|
||||
"real_ip_address": stats.RealIPAddress,
|
||||
"remote_user": stats.RemoteUser,
|
||||
"protocol": stats.Protocol,
|
||||
"method": stats.Method,
|
||||
"uri": stats.URI,
|
||||
"upstream_name": stats.UpstreamName,
|
||||
"upstream_ip": stats.UpstreamIP,
|
||||
"upstream_status": stats.UpstreamStatus,
|
||||
"namespace": stats.Namespace,
|
||||
"ingress": stats.Ingress,
|
||||
"service": stats.Service,
|
||||
}
|
||||
|
||||
// Create Collector Labels Map
|
||||
collectorLabels := prometheus.Labels{
|
||||
"namespace": sc.ns,
|
||||
"ingress_class": sc.ingressClass,
|
||||
}
|
||||
|
||||
// Emit metrics
|
||||
requestsMetric, err := sc.requests.GetMetricWith(collectorLabels)
|
||||
if err != nil {
|
||||
glog.Errorf("Error fetching requests metric: %v", err)
|
||||
collectorSuccess = false
|
||||
} else {
|
||||
requestsMetric.Inc()
|
||||
}
|
||||
|
||||
if stats.UpstreamResponseTime != -1 {
|
||||
upstreamResponseTimeMetric, err := sc.upstreamResponseTime.GetMetricWith(requestLabels)
|
||||
if err != nil {
|
||||
glog.Errorf("Error fetching upstream response time metric: %v", err)
|
||||
collectorSuccess = false
|
||||
} else {
|
||||
upstreamResponseTimeMetric.Observe(stats.UpstreamResponseTime)
|
||||
}
|
||||
}
|
||||
|
||||
if stats.RequestTime != -1 {
|
||||
requestTimeMetric, err := sc.requestTime.GetMetricWith(requestLabels)
|
||||
if err != nil {
|
||||
glog.Errorf("Error fetching request duration metric: %v", err)
|
||||
collectorSuccess = false
|
||||
} else {
|
||||
requestTimeMetric.Observe(stats.RequestTime)
|
||||
}
|
||||
}
|
||||
|
||||
if stats.RequestLength != -1 {
|
||||
requestLengthMetric, err := sc.requestLength.GetMetricWith(requestLabels)
|
||||
if err != nil {
|
||||
glog.Errorf("Error fetching request length metric: %v", err)
|
||||
collectorSuccess = false
|
||||
} else {
|
||||
requestLengthMetric.Observe(stats.RequestLength)
|
||||
}
|
||||
}
|
||||
|
||||
if stats.BytesSent != -1 {
|
||||
bytesSentMetric, err := sc.bytesSent.GetMetricWith(requestLabels)
|
||||
if err != nil {
|
||||
glog.Errorf("Error fetching bytes sent metric: %v", err)
|
||||
collectorSuccess = false
|
||||
} else {
|
||||
bytesSentMetric.Observe(stats.BytesSent)
|
||||
}
|
||||
}
|
||||
|
||||
collectorSuccessMetric, err := sc.collectorSuccess.GetMetricWith(collectorLabels)
|
||||
if err != nil {
|
||||
glog.Errorf("Error fetching collector success metric: %v", err)
|
||||
} else {
|
||||
if collectorSuccess {
|
||||
collectorSuccessMetric.Set(1)
|
||||
collectorSuccessTimeMetric, err := sc.collectorSuccessTime.GetMetricWith(collectorLabels)
|
||||
if err != nil {
|
||||
glog.Errorf("Error fetching collector success time metric: %v", err)
|
||||
} else {
|
||||
collectorSuccessTimeMetric.Set(float64(time.Now().Unix()))
|
||||
}
|
||||
} else {
|
||||
collectorSuccessMetric.Set(0)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Run adds a message handler to a UDP listener
|
||||
func (sc *UDPCollector) Run() {
|
||||
handleMessages(sc.listener, sc.handleMessage)
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue