87 lines
1.8 KiB
Go
87 lines
1.8 KiB
Go
package interceptor
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"go-common/library/ecode"
|
|
"go-common/library/log"
|
|
"go-common/library/net/rpc/context"
|
|
"go-common/library/stat"
|
|
|
|
"golang.org/x/time/rate"
|
|
)
|
|
|
|
var stats = stat.RPCServer
|
|
|
|
const (
|
|
_innerService = "inner"
|
|
)
|
|
|
|
// Interceptor is rpc interceptor
|
|
type Interceptor struct {
|
|
// for limit rate
|
|
rateLimits map[string]*rate.Limiter
|
|
// for auth
|
|
token string
|
|
}
|
|
|
|
// NewInterceptor new a interceptor
|
|
func NewInterceptor(token string) *Interceptor {
|
|
in := &Interceptor{token: token}
|
|
in.rateLimits = make(map[string]*rate.Limiter)
|
|
return in
|
|
}
|
|
|
|
// Rate check the call is limit or not
|
|
func (i *Interceptor) Rate(c context.Context) error {
|
|
limit, ok := i.rateLimits[c.ServiceMethod()]
|
|
if ok && !limit.Allow() {
|
|
return ecode.Degrade
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Stat add stat info to ops
|
|
func (i *Interceptor) Stat(c context.Context, args interface{}, err error) {
|
|
const noUser = "no_user"
|
|
var (
|
|
user = c.User()
|
|
method = c.ServiceMethod()
|
|
tmsub = time.Since(c.Now())
|
|
)
|
|
if user == "" {
|
|
user = noUser
|
|
}
|
|
stats.Timing(user, int64(tmsub/time.Millisecond), method)
|
|
stats.Incr(user, method, strconv.Itoa((ecode.Cause(err).Code())))
|
|
if err != nil {
|
|
log.Errorv(c,
|
|
log.KV("args", fmt.Sprintf("%v", args)),
|
|
log.KV("method", method),
|
|
log.KV("duration", tmsub),
|
|
log.KV("error", fmt.Sprintf("%+v", err)),
|
|
)
|
|
} else {
|
|
if !strings.HasPrefix(method, _innerService) || bool(log.V(2)) {
|
|
log.Infov(c,
|
|
log.KV("args", fmt.Sprintf("%v", args)),
|
|
log.KV("method", method),
|
|
log.KV("duration", tmsub),
|
|
log.KV("error", fmt.Sprintf("%+v", err)),
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Auth check token has auth
|
|
func (i *Interceptor) Auth(c context.Context, addr net.Addr, token string) error {
|
|
if i.token != token {
|
|
return ecode.RPCNoAuth
|
|
}
|
|
return nil
|
|
}
|