reflector.go/reflector/stats.go
2020-01-02 13:12:33 -05:00

96 lines
1.6 KiB
Go

package reflector
import (
"fmt"
"sync"
"time"
"github.com/lbryio/lbry.go/v2/extras/stop"
log "github.com/sirupsen/logrus"
)
// TODO: store daily stats too. and maybe other intervals
type Stats struct {
mu *sync.Mutex
blobs int
streams int
errors map[string]int
started bool
name string
logger *log.Logger
logFreq time.Duration
grp *stop.Group
}
func NewStatLogger(name string, logger *log.Logger, logFreq time.Duration, parentGrp *stop.Group) *Stats {
return &Stats{
mu: &sync.Mutex{},
grp: stop.New(parentGrp),
logger: logger,
logFreq: logFreq,
errors: make(map[string]int),
name: name,
}
}
func (s *Stats) Start() {
s.started = true
s.grp.Add(1)
go func() {
defer s.grp.Done()
s.runSlackLogger()
}()
}
func (s *Stats) Shutdown() {
if !s.started {
return
}
s.log()
s.grp.StopAndWait()
s.started = false
}
func (s *Stats) AddBlob() {
s.mu.Lock()
defer s.mu.Unlock()
s.blobs++
}
func (s *Stats) AddStream() {
s.mu.Lock()
defer s.mu.Unlock()
s.streams++
}
func (s *Stats) runSlackLogger() {
t := time.NewTicker(s.logFreq)
for {
select {
case <-s.grp.Ch():
return
case <-t.C:
s.log()
}
}
}
func (s *Stats) log() {
s.mu.Lock()
blobs, streams := s.blobs, s.streams
s.blobs, s.streams = 0, 0
errStr := ""
for name, count := range s.errors {
errStr += fmt.Sprintf("%d %s, ", count, name)
delete(s.errors, name)
}
s.mu.Unlock()
if len(errStr) > 2 {
errStr = errStr[:len(errStr)-2] // trim last comma and space
}
s.logger.Printf("%s stats: %d blobs, %d streams, errors: %s", s.name, blobs, streams, errStr)
}