forked from zeromicro/go-zero
/
timeoutinterceptor.go
60 lines (54 loc) · 1.41 KB
/
timeoutinterceptor.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
package serverinterceptors
import (
"context"
"fmt"
"runtime/debug"
"strings"
"sync"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// UnaryTimeoutInterceptor returns a func that sets timeout to incoming unary requests.
func UnaryTimeoutInterceptor(timeout time.Duration) grpc.UnaryServerInterceptor {
return func(ctx context.Context, req any, info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler) (any, error) {
ctx, cancel := context.WithTimeout(ctx, timeout)
defer cancel()
var resp any
var err error
var lock sync.Mutex
done := make(chan struct{})
// create channel with buffer size 1 to avoid goroutine leak
panicChan := make(chan any, 1)
go func() {
defer func() {
if p := recover(); p != nil {
// attach call stack to avoid missing in different goroutine
panicChan <- fmt.Sprintf("%+v\n\n%s", p, strings.TrimSpace(string(debug.Stack())))
}
}()
lock.Lock()
defer lock.Unlock()
resp, err = handler(ctx, req)
close(done)
}()
select {
case p := <-panicChan:
panic(p)
case <-done:
lock.Lock()
defer lock.Unlock()
return resp, err
case <-ctx.Done():
err := ctx.Err()
if err == context.Canceled {
err = status.Error(codes.Canceled, err.Error())
} else if err == context.DeadlineExceeded {
err = status.Error(codes.DeadlineExceeded, err.Error())
}
return nil, err
}
}
}