grpc/interceptors/metadata/metadata.go
Adphi 3fb566cb80
errors: add missing canceled
example: add auth
metadata interceptor: do not overide metadatas

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>
2022-06-24 11:47:09 +02:00

51 lines
1.6 KiB
Go

package metadata
import (
"context"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
"go.linka.cloud/grpc/interceptors"
)
func NewInterceptors(pairs ...string) interceptors.Interceptors {
return mdInterceptors{pairs: pairs}
}
type mdInterceptors struct {
pairs []string
}
func (i mdInterceptors) UnaryServerInterceptor() grpc.UnaryServerInterceptor {
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
if err := grpc.SetHeader(ctx, metadata.Pairs(i.pairs...)); err != nil {
return nil, err
}
return handler(ctx, req)
}
}
func (i mdInterceptors) StreamServerInterceptor() grpc.StreamServerInterceptor {
return func(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
if err := grpc.SetHeader(ss.Context(), metadata.Pairs(i.pairs...)); err != nil {
return err
}
return handler(srv, ss)
}
}
func (i mdInterceptors) UnaryClientInterceptor() grpc.UnaryClientInterceptor {
return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
ctx = metadata.AppendToOutgoingContext(ctx, i.pairs...)
return invoker(ctx, method, req, reply, cc, opts...)
}
}
func (i mdInterceptors) StreamClientInterceptor() grpc.StreamClientInterceptor {
return func(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string, streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
ctx = metadata.AppendToOutgoingContext(ctx, i.pairs...)
return streamer(ctx, desc, cc, method, opts...)
}
}