frostfs-s3-gw/metrics/billing.go

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package metrics
import (
"sync"
"github.com/prometheus/client_golang/prometheus"
)
const billingSubsystem = "billing"
const (
userRequestsMetric = "user_requests"
userTrafficMetric = "user_traffic"
)
type RequestType int
const (
UNKNOWNRequest RequestType = iota
HEADRequest RequestType = iota
PUTRequest RequestType = iota
LISTRequest RequestType = iota
GETRequest RequestType = iota
DELETERequest RequestType = iota
)
func (t RequestType) String() string {
switch t {
case 1:
return "HEAD"
case 2:
return "PUT"
case 3:
return "LIST"
case 4:
return "GET"
case 5:
return "DELETE"
default:
return "Unknown"
}
}
type TrafficType int
const (
UnknownTraffic TrafficType = iota
INTraffic TrafficType = iota
OUTTraffic TrafficType = iota
)
func (t TrafficType) String() string {
switch t {
case 1:
return "IN"
case 2:
return "OUT"
default:
return "Unknown"
}
}
type (
OperationList [6]int
UsersAPIStats struct {
users map[string]*userAPIStats
sync.RWMutex
}
bucketKey struct {
name string
cid string
namespace string
}
bucketStat struct {
Operations OperationList
InTraffic uint64
OutTraffic uint64
}
userAPIStats struct {
buckets map[bucketKey]bucketStat
user string
}
UserBucketInfo struct {
User string
Bucket string
ContainerID string
Namespace string
}
UserMetricsInfo struct {
UserBucketInfo
Operation RequestType
Requests int
}
UserTrafficMetricsInfo struct {
UserBucketInfo
Type TrafficType
Value uint64
}
UserMetrics struct {
Requests []UserMetricsInfo
Traffic []UserTrafficMetricsInfo
}
)
func (u *UsersAPIStats) Update(user, bucket, cnrID, ns string, reqType RequestType, in, out uint64) {
if u == nil {
return
}
u.Lock()
defer u.Unlock()
usersStat := u.users[user]
if usersStat == nil {
if u.users == nil {
u.users = make(map[string]*userAPIStats)
}
usersStat = &userAPIStats{
buckets: make(map[bucketKey]bucketStat, 1),
user: user,
}
u.users[user] = usersStat
}
key := bucketKey{
name: bucket,
cid: cnrID,
namespace: ns,
}
bktStat := usersStat.buckets[key]
bktStat.Operations[reqType]++
bktStat.InTraffic += in
bktStat.OutTraffic += out
usersStat.buckets[key] = bktStat
}
func (u *UsersAPIStats) DumpMetrics() UserMetrics {
if u == nil {
return UserMetrics{}
}
u.Lock()
defer u.Unlock()
result := UserMetrics{
Requests: make([]UserMetricsInfo, 0, len(u.users)),
Traffic: make([]UserTrafficMetricsInfo, 0, len(u.users)),
}
for user, userStat := range u.users {
for key, bktStat := range userStat.buckets {
userBktInfo := UserBucketInfo{
User: user,
Bucket: key.name,
ContainerID: key.cid,
Namespace: key.namespace,
}
if bktStat.InTraffic != 0 {
result.Traffic = append(result.Traffic, UserTrafficMetricsInfo{
UserBucketInfo: userBktInfo,
Type: INTraffic,
Value: bktStat.InTraffic,
})
}
if bktStat.OutTraffic != 0 {
result.Traffic = append(result.Traffic, UserTrafficMetricsInfo{
UserBucketInfo: userBktInfo,
Type: OUTTraffic,
Value: bktStat.OutTraffic,
})
}
for op, val := range bktStat.Operations {
if val != 0 {
result.Requests = append(result.Requests, UserMetricsInfo{
UserBucketInfo: userBktInfo,
Operation: RequestType(op),
Requests: val,
})
}
}
}
}
u.users = make(map[string]*userAPIStats)
return result
}
type billingMetrics struct {
registry *prometheus.Registry
userRequestsDesc *prometheus.Desc
userTrafficDesc *prometheus.Desc
apiStat *UsersAPIStats
}
func newBillingMetrics() *billingMetrics {
return &billingMetrics{
registry: prometheus.NewRegistry(),
userRequestsDesc: newDesc(appMetricsDesc[billingSubsystem][userRequestsMetric]),
userTrafficDesc: newDesc(appMetricsDesc[billingSubsystem][userTrafficMetric]),
apiStat: &UsersAPIStats{},
}
}
func (b *billingMetrics) Gatherer() prometheus.Gatherer {
return b.registry
}
func (b *billingMetrics) Register() {
b.registry.MustRegister(b)
}
func (b *billingMetrics) Unregister() {
b.registry.Unregister(b)
}
func (b *billingMetrics) Describe(ch chan<- *prometheus.Desc) {
ch <- b.userRequestsDesc
ch <- b.userTrafficDesc
}
func (b *billingMetrics) Collect(ch chan<- prometheus.Metric) {
userMetrics := b.apiStat.DumpMetrics()
for _, value := range userMetrics.Requests {
ch <- prometheus.MustNewConstMetric(
b.userRequestsDesc,
prometheus.CounterValue,
float64(value.Requests),
value.User,
value.Bucket,
value.ContainerID,
value.Operation.String(),
value.Namespace,
)
}
for _, value := range userMetrics.Traffic {
ch <- prometheus.MustNewConstMetric(
b.userTrafficDesc,
prometheus.CounterValue,
float64(value.Value),
value.User,
value.Bucket,
value.ContainerID,
value.Type.String(),
value.Namespace,
)
}
}