-
Notifications
You must be signed in to change notification settings - Fork 0
/
handler_grpc.go
166 lines (152 loc) · 5.38 KB
/
handler_grpc.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
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
package cherry
import (
"context"
"encoding/json"
"fmt"
grpc_validator "github.com/grpc-ecosystem/go-grpc-middleware/v2/interceptors/validator"
"github.com/hopeio/context/httpctx"
"github.com/hopeio/protobuf/errcode"
"github.com/hopeio/utils/log"
runtimei "github.com/hopeio/utils/runtime"
stringsi "github.com/hopeio/utils/strings"
"github.com/hopeio/utils/validation/validator"
"github.com/modern-go/reflect2"
"go.uber.org/zap"
"go.uber.org/zap/zapgrpc"
"google.golang.org/grpc"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/reflection"
"google.golang.org/grpc/status"
"reflect"
"runtime/debug"
)
func (s *Server) grpcHandler() *grpc.Server {
//conf := s.Config
grpclog.SetLoggerV2(zapgrpc.NewLogger(log.GetCallerSkipLogger(4).Logger))
if s.GrpcHandler != nil {
var stream = []grpc.StreamServerInterceptor{StreamAccess, StreamValidator}
var unary = []grpc.UnaryServerInterceptor{UnaryAccess(s.Config), UnaryValidator}
// 想做的大而全几乎不可能,为了更高的自由度,这里不做实现,均由使用者自行实现,后续可提供默认实现,但同样要由用户自己调用
/* var srvMetrics *grpcprom.ServerMetrics
if conf.EnableMetrics {
// Setup metrics.
srvMetrics = grpcprom.NewServerMetrics(
grpcprom.WithServerHandlingTimeHistogram(
grpcprom.WithHistogramBuckets([]float64{0.001, 0.01, 0.1, 0.3, 0.6, 1, 3, 6, 9, 20, 30, 60, 90, 120}),
),
)
prometheus.MustRegister(srvMetrics)
exemplarFromContext := func(ctx context.Context) prometheus.Labels {
if span := trace.SpanContextFromContext(ctx); span.IsSampled() {
return prometheus.Labels{"traceID": span.TraceID().String()}
}
return nil
}
stream = append(stream, srvMetrics.StreamServerInterceptor(grpcprom.WithExemplarFromContext(exemplarFromContext)))
unary = append(unary, srvMetrics.UnaryServerInterceptor(grpcprom.WithExemplarFromContext(exemplarFromContext)))
}*/
stream = append(stream, grpc_validator.StreamServerInterceptor())
unary = append(unary, grpc_validator.UnaryServerInterceptor())
s.Config.GrpcOptions = append([]grpc.ServerOption{
grpc.ChainStreamInterceptor(stream...),
grpc.ChainUnaryInterceptor(unary...),
}, s.Config.GrpcOptions...)
grpcServer := grpc.NewServer(s.Config.GrpcOptions...)
/* if conf.EnableMetrics {
srvMetrics.InitializeMetrics(grpcServer)
}*/
s.GrpcHandler(grpcServer)
reflection.Register(grpcServer)
return grpcServer
}
return nil
}
func UnaryAccess(conf *Config) grpc.UnaryServerInterceptor {
//enablePrometheus := conf.EnableMetrics
return func(
ctx context.Context, req interface{},
info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler,
) (resp interface{}, err error) {
defer func() {
if r := recover(); r != nil {
frame := debug.Stack()
log.Errorw(fmt.Sprintf("panic: %v", r), zap.ByteString(log.FieldStack, frame))
err = errcode.SysError.ErrRep()
}
}()
resp, err = handler(ctx, req)
var code int
//不能添加错误处理,除非所有返回的结构相同
if err != nil {
if v, ok := err.(interface{ GrpcStatus() *status.Status }); !ok {
err = errcode.Unknown.Message(err.Error())
code = int(errcode.Unknown)
} else {
code = int(v.GrpcStatus().Code())
}
}
if err == nil && reflect2.IsNil(resp) {
resp = reflect.New(reflect.TypeOf(resp).Elem()).Interface()
}
/* body, _ := protojson.Marshal(req.(proto.Message)) // 性能比标准库差很多
result, _ := protojson.Marshal(resp.(proto.Message))*/
body, _ := json.Marshal(req)
result, _ := json.Marshal(resp)
ctxi := httpctx.FromContextValue(ctx)
defaultAccessLog(ctxi, info.FullMethod, "grpc",
stringsi.BytesToString(body), stringsi.BytesToString(result),
code)
/* if enablePrometheus {
defaultMetricsRecord(ctxi, info.FullMethod, "grpc", code)
}*/
return resp, err
}
}
func StreamAccess(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) (err error) {
defer func() {
if r := recover(); r != nil {
frame, _ := runtimei.GetCallerFrame(2)
log.Errorw(fmt.Sprintf("panic: %v", r), zap.String(log.FieldStack, fmt.Sprintf("%s:%d (%#x)\n\t%s\n", frame.File, frame.Line, frame.PC, frame.Function)))
err = errcode.SysError.ErrRep()
}
//不能添加错误处理,除非所有返回的结构相同
if err != nil {
if _, ok := err.(interface{ GrpcStatus() *status.Status }); !ok {
err = errcode.Unknown.Message(err.Error())
}
}
}()
return handler(srv, stream)
}
type recvWrapper struct {
grpc.ServerStream
}
func (s *recvWrapper) SendMsg(m interface{}) error {
return s.ServerStream.SendMsg(m)
}
func (s *recvWrapper) RecvMsg(m interface{}) error {
if err := validator.Validator.Struct(m); err != nil {
return errcode.InvalidArgument.Message(validator.Trans(err))
}
if err := s.ServerStream.RecvMsg(m); err != nil {
return err
}
return nil
}
func UnaryValidator(
ctx context.Context, req interface{},
info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler,
) (resp interface{}, err error) {
if err = validator.Validator.Struct(req); err != nil {
return nil, errcode.InvalidArgument.Message(validator.Trans(err))
}
return handler(ctx, req)
}
func StreamValidator(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) (err error) {
wrapper := &recvWrapper{
ServerStream: stream,
}
return handler(srv, wrapper)
}