101 lines
2.3 KiB
Go
101 lines
2.3 KiB
Go
|
package v1
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
"encoding/json"
|
||
|
|
"fmt"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"go-common/app/infra/config/model"
|
||
|
|
"go-common/library/cache/redis"
|
||
|
|
"go-common/library/log"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
expireDuration = 3 * time.Hour
|
||
|
|
_hostKey = "%s_%s"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Hostkey host cache key
|
||
|
|
func hostKey(svr, env string) string {
|
||
|
|
return fmt.Sprintf(_hostKey, svr, env)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Hosts return service hosts from redis.
|
||
|
|
func (d *Dao) Hosts(c context.Context, svr, env string) (hosts []*model.Host, err error) {
|
||
|
|
var (
|
||
|
|
dels []string
|
||
|
|
now = time.Now()
|
||
|
|
hostkey = hostKey(svr, env)
|
||
|
|
conn = d.redis.Get(c)
|
||
|
|
)
|
||
|
|
defer conn.Close()
|
||
|
|
res, err := redis.Strings(conn.Do("HGETALL", hostkey))
|
||
|
|
if err != nil {
|
||
|
|
log.Error("conn.Do(HGETALL, %s) error(%v)", hostkey, err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
for i, r := range res {
|
||
|
|
if i%2 == 0 {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
h := &model.Host{}
|
||
|
|
if err = json.Unmarshal([]byte(r), h); err != nil {
|
||
|
|
log.Error("json.Unmarshal(%s) error(%v)", r, err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if now.Sub(h.HeartbeatTime.Time()) <= d.expire+5 {
|
||
|
|
h.State = model.HostOnline
|
||
|
|
hosts = append(hosts, h)
|
||
|
|
} else if now.Sub(h.HeartbeatTime.Time()) >= expireDuration {
|
||
|
|
dels = append(dels, h.Name)
|
||
|
|
} else {
|
||
|
|
h.State = model.HostOffline
|
||
|
|
hosts = append(hosts, h)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if len(dels) > 0 {
|
||
|
|
if _, err1 := conn.Do("HDEL", hostkey, dels); err1 != nil {
|
||
|
|
log.Error("conn.Do(HDEL, %s, %v) error(%v)", hostkey, dels, err1)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// SetHost add service host to redis.
|
||
|
|
func (d *Dao) SetHost(c context.Context, host *model.Host, svr, env string) (err error) {
|
||
|
|
hostkey := hostKey(svr, env)
|
||
|
|
b, err := json.Marshal(host)
|
||
|
|
if err != nil {
|
||
|
|
log.Error("json.Marshal(%s) error(%v)", host, err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
conn := d.redis.Get(c)
|
||
|
|
defer conn.Close()
|
||
|
|
if _, err = conn.Do("HSET", hostkey, host.Name, string(b)); err != nil {
|
||
|
|
log.Error("conn.Do(SET, %s, %s, %v) error(%v)", hostkey, host.Name, host, err)
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// ClearHost clear all hosts.
|
||
|
|
func (d *Dao) ClearHost(c context.Context, svr, env string) (err error) {
|
||
|
|
var (
|
||
|
|
hostkey = hostKey(svr, env)
|
||
|
|
conn = d.redis.Get(c)
|
||
|
|
)
|
||
|
|
defer conn.Close()
|
||
|
|
if _, err = conn.Do("DEL", hostkey); err != nil {
|
||
|
|
log.Error("conn.Do(DEL, %s) error(%v)", hostkey, err)
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// Ping check Redis connection
|
||
|
|
func (d *Dao) pingRedis(c context.Context) (err error) {
|
||
|
|
conn := d.redis.Get(c)
|
||
|
|
_, err = conn.Do("SET", "PING", "PONG")
|
||
|
|
conn.Close()
|
||
|
|
return
|
||
|
|
}
|