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updater.go
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updater.go
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package updater
import (
"strings"
"sync"
"time"
"github.com/Abbas-gheydi/hanoproxy/confs"
"github.com/Abbas-gheydi/hanoproxy/dns/records"
"github.com/Abbas-gheydi/hanoproxy/model"
)
type recordTable struct {
Records []model.Record
Mutex sync.Mutex
}
func (r *recordTable) update(ip *model.IpAddr, healthStatus bool) {
r.Mutex.Lock()
ip.IsHealthy = healthStatus
r.Mutex.Unlock()
}
var srcRecordTable recordTable
func init() {
srcRecordTable.Records = make([]model.Record, 0)
}
func prepareRecordLists() {
for i, src := range confs.HaNoProxy.DnsRecords {
//add domain name and dot to records
src.Name = src.Name + "." + confs.HaNoProxy.GlobalOptions.HADomain
if !strings.HasSuffix(src.Name, ".") {
src.Name = src.Name + "."
src.Name = strings.ToLower(src.Name)
}
//make all ip healty for the beginning
/*
for it := range src.Ip {
src.Ip[it].IsHealthy = true
}
*/
confs.HaNoProxy.DnsRecords[i] = src
}
}
func createNewRecordList() []model.Record {
var allrecords []model.Record
for _, record := range confs.HaNoProxy.DnsRecords {
var r model.Record
var ips []model.IpAddr
var sentinels []model.IpAddr
ips = append(ips, record.Ip...)
sentinels = append(sentinels, record.Sentinels...)
r.Ip = ips
r.Sentinels = sentinels
r.Name = record.Name
r.Options = record.Options
r.ServiceType = record.ServiceType
allrecords = append(allrecords, r)
}
return allrecords
}
func FillRecordTables() {
prepareRecordLists()
srcRecordTable.Records = createNewRecordList()
for _, src := range createNewRecordList() {
records.DnsRecords.Add(src)
}
}
func HealthCheck() {
for {
for _, src := range srcRecordTable.Records {
if src.Options.CheckForHealth {
switch src.ServiceType {
case model.Postgres:
go records.DnsRecords.Update(srcRecordTable.checkPostgresHealth(src))
case model.Sentinel:
go records.DnsRecords.Update(srcRecordTable.checkRedisHealth(src))
case model.HTTP:
go records.DnsRecords.Update(srcRecordTable.checkHttpHealth(src))
case model.TCP:
go records.DnsRecords.Update(srcRecordTable.checkTcp(src))
}
}
}
time.Sleep(time.Second * time.Duration(confs.HaNoProxy.GlobalOptions.UpdateInterval))
}
}