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interceptor_auth.go
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/
interceptor_auth.go
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package goo_grpc
import (
"context"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/status"
)
type AuthFunc func(md metadata.MD, ctx context.Context, fullMethod string) (context.Context, error)
// 服务端 - 单向拦截器 - 认证
func serverUnaryInterceptorAuth(authFunc AuthFunc) grpc.UnaryServerInterceptor {
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
if authFunc == nil {
return handler(ctx, req)
}
md, _ := metadata.FromIncomingContext(ctx)
ctxx, err := authFunc(md, ctx, info.FullMethod)
if err != nil {
return nil, status.Errorf(401, "认证失败,原因:%s", err)
}
return handler(ctxx, req)
}
}
// 服务端 - 流式拦截器 - 认证
func serverStreamInterceptorAuth(authFunc AuthFunc) grpc.StreamServerInterceptor {
return func(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
if authFunc == nil {
return handler(srv, ss)
}
md, _ := metadata.FromIncomingContext(ss.Context())
ctxx, err := authFunc(md, ss.Context(), info.FullMethod)
if err != nil {
return status.Errorf(401, "认证失败,原因:%s", err)
}
ssa := newServerStreamAuth(ss)
ssa.ctx = ctxx
return handler(srv, ssa)
}
}
type serverStreamAuth struct {
grpc.ServerStream
ctx context.Context
}
func (ssa *serverStreamAuth) Context() context.Context {
return ssa.ctx
}
func newServerStreamAuth(ss grpc.ServerStream) *serverStreamAuth {
if ssa, ok := ss.(*serverStreamAuth); ok {
return ssa
}
return &serverStreamAuth{ServerStream: ss, ctx: ss.Context()}
}