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metrics_util.go
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/**
* Copyright (c) F5, Inc.
*
* This source code is licensed under the Apache License, Version 2.0 license found in the
* LICENSE file in the root directory of this source tree.
*/
package metrics
import (
"context"
"math"
"sort"
"time"
"github.com/nginx/agent/sdk/v2/proto"
"github.com/nginx/agent/v2/src/core"
"github.com/nginx/agent/v2/src/core/config"
"github.com/gogo/protobuf/types"
log "github.com/sirupsen/logrus"
)
type Collector interface {
Collect(ctx context.Context, m chan<- *StatsEntityWrapper)
UpdateConfig(config *config.Config)
}
type Source interface {
Collect(ctx context.Context, m chan<- *StatsEntityWrapper)
}
type NginxSource interface {
Collect(ctx context.Context, m chan<- *StatsEntityWrapper)
Update(dimensions *CommonDim, collectorConf *NginxCollectorConfig)
Stop()
}
type StatsEntityWrapper struct {
Type proto.MetricsReport_Type
Data *proto.StatsEntity
}
type MetricsReportBundle struct {
Data []*proto.MetricsReport
}
type NginxCollectorConfig struct {
NginxId string
StubStatus string
PlusAPI string
BinPath string
ConfPath string
CollectionInterval time.Duration
AccessLogs []string
ErrorLogs []string
ClientVersion int
}
func NewStatsEntityWrapper(dims []*proto.Dimension, samples []*proto.SimpleMetric, seType proto.MetricsReport_Type) *StatsEntityWrapper {
return &StatsEntityWrapper{seType, &proto.StatsEntity{
Timestamp: types.TimestampNow(),
Dimensions: dims,
Simplemetrics: samples,
}}
}
func NewStatsEntity(dims []*proto.Dimension, samples []*proto.SimpleMetric) *proto.StatsEntity {
return &proto.StatsEntity{
Timestamp: types.TimestampNow(),
Dimensions: dims,
Simplemetrics: samples,
}
}
func GetTimeMetrics(times []float64, metricType string) float64 {
if len(times) == 0 {
return 0
}
switch metricType {
case "time":
// Calculate average
sum := 0.0
for _, t := range times {
sum += t
}
return (math.Round(sum*1000) / 1000) / float64(len(times))
case "count":
return float64(len(times))
case "max":
sort.Float64s(times)
return times[len(times)-1]
case "median":
sort.Float64s(times)
mNumber := len(times) / 2
if len(times)%2 != 0 {
return times[mNumber]
} else {
return (times[mNumber-1] + times[mNumber]) / 2
}
case "pctl95":
sort.Float64s(times)
index := int(math.RoundToEven(float64(0.95)*float64(len(times)))) - 1
return times[index]
}
return 0
}
func GetCalculationMap() map[string]string {
return map[string]string{
"system.cpu.idle": "avg",
"system.cpu.iowait": "avg",
"system.cpu.stolen": "avg",
"system.cpu.system": "avg",
"system.cpu.user": "avg",
"system.disk.free": "avg",
"system.disk.in_use": "avg",
"system.disk.total": "avg",
"system.disk.used": "avg",
"system.io.iops_r": "sum",
"system.io.iops_w": "sum",
"system.io.kbs_r": "sum",
"system.io.kbs_w": "sum",
"system.io.wait_r": "sum",
"system.io.wait_w": "sum",
"system.mem.available": "avg",
"system.mem.buffered": "avg",
"system.mem.cached": "avg",
"system.mem.free": "avg",
"system.mem.pct_used": "avg",
"system.mem.shared": "avg",
"system.mem.total": "avg",
"system.mem.used": "avg",
"system.load.1": "avg",
"system.load.15": "avg",
"system.load.5": "avg",
"system.swap.free": "avg",
"system.swap.pct_free": "avg",
"system.swap.total": "avg",
"system.swap.used": "avg",
"system.net.bytes_rcvd": "sum",
"system.net.bytes_sent": "sum",
"system.net.drops_in.count": "sum",
"system.net.drops_out.count": "sum",
"system.net.listen_overflows": "sum",
"system.net.packets_in.count": "sum",
"system.net.packets_in.error": "sum",
"system.net.packets_out.count": "sum",
"system.net.packets_out.error": "sum",
"nginx.status": "boolean",
"nginx.config.generation": "sum",
"nginx.http.gzip.ratio": "avg",
"nginx.http.status.1xx": "sum",
"nginx.http.status.2xx": "sum",
"nginx.http.status.3xx": "sum",
"nginx.http.status.4xx": "sum",
"nginx.http.status.5xx": "sum",
"nginx.http.status.403": "sum",
"nginx.http.status.404": "sum",
"nginx.http.status.500": "sum",
"nginx.http.status.502": "sum",
"nginx.http.status.503": "sum",
"nginx.http.status.504": "sum",
"nginx.http.status.discarded": "sum",
"nginx.http.method.delete": "sum",
"nginx.http.method.get": "sum",
"nginx.http.method.head": "sum",
"nginx.http.method.options": "sum",
"nginx.http.method.post": "sum",
"nginx.http.method.put": "sum",
"nginx.http.method.others": "sum",
"nginx.http.request.bytes_sent": "sum",
"nginx.http.request.body_bytes_sent": "sum",
"nginx.http.request.length": "avg",
"nginx.http.request.malformed": "sum",
"nginx.http.request.time": "avg",
"nginx.http.request.time.count": "sum",
"nginx.http.request.time.max": "avg",
"nginx.http.request.time.median": "avg",
"nginx.http.request.time.pctl95": "avg",
"nginx.http.request.count": "sum",
"nginx.http.request.current": "avg",
"nginx.http.request.buffered": "sum",
"nginx.http.v0_9": "sum",
"nginx.http.v1_0": "sum",
"nginx.http.v1_1": "sum",
"nginx.http.v2": "sum",
"nginx.upstream.connect.time": "avg",
"nginx.upstream.connect.time.count": "sum",
"nginx.upstream.connect.time.max": "avg",
"nginx.upstream.connect.time.median": "avg",
"nginx.upstream.connect.time.pctl95": "avg",
"nginx.upstream.header.time": "avg",
"nginx.upstream.header.time.count": "sum",
"nginx.upstream.header.time.max": "avg",
"nginx.upstream.header.time.median": "avg",
"nginx.upstream.header.time.pctl95": "avg",
"nginx.upstream.response.length": "avg",
"nginx.upstream.response.time": "avg",
"nginx.upstream.response.time.count": "sum",
"nginx.upstream.response.time.max": "avg",
"nginx.upstream.response.time.median": "avg",
"nginx.upstream.response.time.pctl95": "avg",
"nginx.upstream.status.1xx": "sum",
"nginx.upstream.status.2xx": "sum",
"nginx.upstream.status.3xx": "sum",
"nginx.upstream.status.4xx": "sum",
"nginx.upstream.status.5xx": "sum",
"nginx.http.conn.handled": "sum",
"nginx.http.conn.reading": "avg",
"nginx.http.conn.writing": "avg",
"nginx.http.conn.accepted": "sum",
"nginx.http.conn.active": "avg",
"nginx.http.conn.current": "avg",
"nginx.http.conn.dropped": "sum",
"nginx.http.conn.idle": "avg",
"nginx.cache.bypass": "sum",
"nginx.cache.expired": "sum",
"nginx.cache.hit": "sum",
"nginx.cache.miss": "sum",
"nginx.cache.revalidated": "sum",
"nginx.cache.stale": "sum",
"nginx.cache.updating": "sum",
"nginx.upstream.response.buffered": "sum",
"nginx.upstream.request.failed": "sum",
"nginx.upstream.request.count": "sum",
"nginx.upstream.next.count": "sum",
"nginx.upstream.response.failed": "sum",
"nginx.workers.count": "avg",
"nginx.workers.rlimit_nofile": "avg",
"nginx.workers.cpu.user": "sum",
"nginx.workers.cpu.system": "sum",
"nginx.workers.cpu.total": "sum",
"nginx.workers.fds_count": "avg",
"nginx.workers.mem.vms": "avg",
"nginx.workers.mem.rss": "avg",
"nginx.workers.mem.rss_pct": "avg",
"nginx.workers.io.kbs_r": "sum",
"nginx.workers.io.kbs_w": "sum",
"plus.http.limit_conns.passed": "sum",
"plus.http.limit_conns.rejected": "sum",
"plus.http.limit_conns.rejected_dry_run": "sum",
"plus.http.limit_reqs.passed": "sum",
"plus.http.limit_reqs.delayed": "sum",
"plus.http.limit_reqs.rejected": "sum",
"plus.http.limit_reqs.delayed_dry_run": "sum",
"plus.http.limit_reqs.rejected_dry_run": "sum",
"plus.cache.bypass.responses": "sum",
"plus.cache.bypass.bytes": "sum",
"plus.cache.expired.responses": "sum",
"plus.cache.expired.bytes": "sum",
"plus.cache.hit.responses": "sum",
"plus.cache.hit.bytes": "sum",
"plus.cache.miss.responses": "sum",
"plus.cache.miss.bytes": "sum",
"plus.cache.revalidated.responses": "sum",
"plus.cache.revalidated.bytes": "sum",
"plus.cache.size": "avg",
"plus.cache.max_size": "avg",
"plus.cache.stale.responses": "sum",
"plus.cache.stale.bytes": "sum",
"plus.cache.updating.responses": "sum",
"plus.cache.updating.bytes": "sum",
"plus.http.request.bytes_rcvd": "sum",
"plus.http.request.bytes_sent": "sum",
"plus.http.request.count": "sum",
"plus.http.response.count": "sum",
"plus.ssl.failed": "sum",
"plus.ssl.handshakes": "sum",
"plus.ssl.reuses": "sum",
"plus.http.status.1xx": "sum",
"plus.http.status.2xx": "sum",
"plus.http.status.3xx": "sum",
"plus.http.status.4xx": "sum",
"plus.http.status.5xx": "sum",
"plus.http.ssl.handshakes": "sum",
"plus.http.ssl.handshakes.failed": "sum",
"plus.http.ssl.session.reuses": "sum",
"plus.http.status.discarded": "sum",
"plus.http.status.processing": "avg",
"plus.stream.bytes_rcvd": "sum",
"plus.stream.bytes_sent": "sum",
"plus.stream.connections": "sum",
"plus.stream.processing": "avg",
"plus.stream.discarded": "sum",
"plus.stream.status.2xx": "sum",
"plus.stream.status.4xx": "sum",
"plus.stream.status.5xx": "sum",
"plus.stream.status.total": "sum",
"plus.http.upstream.zombies": "avg",
"plus.http.upstream.keepalives": "avg",
"plus.http.upstream.queue.maxsize": "avg",
"plus.http.upstream.queue.overflows": "sum",
"plus.http.upstream.queue.size": "avg",
"plus.http.upstream.peers.conn.active": "avg",
"plus.http.upstream.peers.header_time": "avg",
"plus.http.upstream.peers.header_time.count": "sum",
"plus.http.upstream.peers.header_time.max": "avg",
"plus.http.upstream.peers.header_time.median": "avg",
"plus.http.upstream.peers.header_time.pctl95": "avg",
"plus.http.upstream.peers.response.time": "avg",
"plus.http.upstream.peers.response.time.count": "sum",
"plus.http.upstream.peers.response.time.max": "avg",
"plus.http.upstream.peers.response.time.median": "avg",
"plus.http.upstream.peers.response.time.pctl95": "avg",
"plus.http.upstream.peers.request.count": "sum",
"plus.http.upstream.peers.response.count": "sum",
"plus.http.upstream.peers.ssl.handshakes": "sum",
"plus.http.upstream.peers.ssl.handshakes.failed": "sum",
"plus.http.upstream.peers.ssl.session.reuses": "sum",
"plus.http.upstream.peers.status.1xx": "sum",
"plus.http.upstream.peers.status.2xx": "sum",
"plus.http.upstream.peers.status.3xx": "sum",
"plus.http.upstream.peers.status.4xx": "sum",
"plus.http.upstream.peers.status.5xx": "sum",
"plus.http.upstream.peers.bytes_sent": "sum",
"plus.http.upstream.peers.bytes_rcvd": "sum",
"plus.http.upstream.peers.fails": "sum",
"plus.http.upstream.peers.unavail": "sum",
"plus.http.upstream.peers.health_checks.fails": "sum",
"plus.http.upstream.peers.health_checks.unhealthy": "sum",
"plus.http.upstream.peers.health_checks.checks": "sum",
"plus.http.upstream.peers.state.up": "avg",
"plus.http.upstream.peers.state.draining": "avg",
"plus.http.upstream.peers.state.down": "avg",
"plus.http.upstream.peers.state.unavail": "avg",
"plus.http.upstream.peers.state.checking": "avg",
"plus.http.upstream.peers.state.unhealthy": "avg",
"plus.http.upstream.peers.total.up": "avg",
"plus.http.upstream.peers.total.draining": "avg",
"plus.http.upstream.peers.total.down": "avg",
"plus.http.upstream.peers.total.unavail": "avg",
"plus.http.upstream.peers.total.checking": "avg",
"plus.http.upstream.peers.total.unhealthy": "avg",
"plus.stream.upstream.zombies": "avg",
"plus.stream.upstream.peers.conn.active": "avg",
"plus.stream.upstream.peers.conn.count": "sum",
"plus.stream.upstream.peers.connect_time": "avg",
"plus.stream.upstream.peers.connect_time.count": "sum",
"plus.stream.upstream.peers.connect_time.max": "avg",
"plus.stream.upstream.peers.connect_time.median": "avg",
"plus.stream.upstream.peers.connect_time.pctl95": "avg",
"plus.stream.upstream.peers.ttfb": "avg",
"plus.stream.upstream.peers.response.time": "avg",
"plus.stream.upstream.peers.response.time.count": "sum",
"plus.stream.upstream.peers.response.time.max": "avg",
"plus.stream.upstream.peers.response.time.median": "avg",
"plus.stream.upstream.peers.response.time.pctl95": "avg",
"plus.stream.upstream.peers.bytes_sent": "sum",
"plus.stream.upstream.peers.bytes_rcvd": "sum",
"plus.stream.upstream.peers.fails": "sum",
"plus.stream.upstream.peers.unavail": "sum",
"plus.stream.upstream.peers.health_checks.fails": "sum",
"plus.stream.upstream.peers.health_checks.unhealthy": "sum",
"plus.stream.upstream.peers.health_checks.checks": "sum",
"plus.stream.upstream.peers.state.up": "avg",
"plus.stream.upstream.peers.state.draining": "avg",
"plus.stream.upstream.peers.state.down": "avg",
"plus.stream.upstream.peers.state.unavail": "avg",
"plus.stream.upstream.peers.state.checking": "avg",
"plus.stream.upstream.peers.state.unhealthy": "avg",
"plus.stream.upstream.peers.total.up": "avg",
"plus.stream.upstream.peers.total.draining": "avg",
"plus.stream.upstream.peers.total.down": "avg",
"plus.stream.upstream.peers.total.unavail": "avg",
"plus.stream.upstream.peers.total.checking": "avg",
"plus.stream.upstream.peers.total.unhealthy": "avg",
"plus.slab.pages.used": "avg",
"plus.slab.pages.free": "avg",
"plus.slab.pages.total": "avg",
"plus.slab.pages.pct_used": "avg",
"plus.worker.conn.accepted": "sum",
"plus.worker.conn.dropped": "sum",
"plus.worker.conn.active": "avg",
"plus.worker.conn.idle": "avg",
"plus.worker.http.request.total": "sum",
"plus.worker.http.request.current": "avg",
"plus.instance.count": "avg",
"container.cpu.cores": "avg",
"container.cpu.period": "avg",
"container.cpu.quota": "avg",
"container.cpu.shares": "avg",
"container.cpu.set.cores": "avg",
"container.cpu.throttling.time": "avg",
"container.cpu.throttling.throttled": "avg",
"container.cpu.throttling.periods": "avg",
"container.cpu.throttling.percent": "avg",
"container.mem.oom": "avg",
"container.mem.oom.kill": "avg",
}
}
func GenerateMetricsReportBundle(entities []*StatsEntityWrapper) core.Payload {
reportMap := make(map[proto.MetricsReport_Type]*proto.MetricsReport, 0)
for _, entity := range entities {
if entity == nil || entity.Data == nil {
log.Debugf("Skipping nil entity in metrics generation")
continue
}
if _, ok := reportMap[entity.Type]; !ok {
reportMap[entity.Type] = &proto.MetricsReport{
Meta: &proto.Metadata{
Timestamp: types.TimestampNow(),
},
Type: entity.Type,
Data: make([]*proto.StatsEntity, 0),
}
}
reportMap[entity.Type].Data = append(reportMap[entity.Type].Data, entity.Data)
}
if len(reportMap) > 0 {
bundle := &MetricsReportBundle{Data: []*proto.MetricsReport{}}
for _, report := range reportMap {
bundle.Data = append(bundle.Data, report)
}
return bundle
}
return nil
}