/
stats.go
57 lines (46 loc) · 1.07 KB
/
stats.go
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package main
import (
"sync"
"time"
log "github.com/Sirupsen/logrus"
"github.com/samuel/go-zookeeper/zk"
)
type StatsStorage struct {
lock sync.RWMutex
stats map[string]zk.ServerStats
}
// NewStats contstructs a new StatsStorage
func NewStats() *StatsStorage {
c := new(StatsStorage)
return c
}
func (store *StatsStorage) fetchStats(zkServers map[string]string) {
for {
hosts := getZKHostsFromConfig()
ipPorts := []string{}
// keep order when splitting in hosts list and ip:port list
for _, h := range hosts {
ipPorts = append(ipPorts, zkServers[h])
}
servers, ok := zk.FLWSrvr(ipPorts, 3*time.Second)
recorded := map[string]zk.ServerStats{}
for idx, s := range servers {
if s.Error != nil {
log.Debug(s.Error)
}
recorded[hosts[idx]] = *s
}
store.lock.Lock()
store.stats = recorded
store.lock.Unlock()
if !ok {
log.Error("Failed to fetch stats on one or more servers")
}
time.Sleep(2 * time.Second)
}
}
func (s *StatsStorage) getStats() map[string]zk.ServerStats {
s.lock.RLock()
defer s.lock.RUnlock()
return s.stats
}