mirror of
https://github.com/fnproject/fn.git
synced 2022-10-28 21:29:17 +03:00
e637661ea2
* Adding a way to inject a request ID It is very useful to associate a request ID to each incoming request, this change allows to provide a function to do that via Server Option. The change comes with a default function which will generate a new request ID. The request ID is put in the request context along with a common logger which always logs the request-id We add gRPC interceptors to the server so it can get the request ID out of the gRPC metadata and put it in the common logger stored in the context so as all the log lines using the common logger from the context will have the request ID logged
49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
// Copyright 2017 David Ackroyd. All Rights Reserved.
|
|
// See LICENSE for licensing terms.
|
|
|
|
package grpc_recovery
|
|
|
|
import (
|
|
"golang.org/x/net/context"
|
|
"google.golang.org/grpc"
|
|
"google.golang.org/grpc/codes"
|
|
)
|
|
|
|
// RecoveryHandlerFunc is a function that recovers from the panic `p` by returning an `error`.
|
|
type RecoveryHandlerFunc func(p interface{}) (err error)
|
|
|
|
// UnaryServerInterceptor returns a new unary server interceptor for panic recovery.
|
|
func UnaryServerInterceptor(opts ...Option) grpc.UnaryServerInterceptor {
|
|
o := evaluateOptions(opts)
|
|
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (_ interface{}, err error) {
|
|
defer func() {
|
|
if r := recover(); r != nil {
|
|
err = recoverFrom(r, o.recoveryHandlerFunc)
|
|
}
|
|
}()
|
|
|
|
return handler(ctx, req)
|
|
}
|
|
}
|
|
|
|
// StreamServerInterceptor returns a new streaming server interceptor for panic recovery.
|
|
func StreamServerInterceptor(opts ...Option) grpc.StreamServerInterceptor {
|
|
o := evaluateOptions(opts)
|
|
return func(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) (err error) {
|
|
defer func() {
|
|
if r := recover(); r != nil {
|
|
err = recoverFrom(r, o.recoveryHandlerFunc)
|
|
}
|
|
}()
|
|
|
|
return handler(srv, stream)
|
|
}
|
|
}
|
|
|
|
func recoverFrom(p interface{}, r RecoveryHandlerFunc) error {
|
|
if r == nil {
|
|
return grpc.Errorf(codes.Internal, "%s", p)
|
|
}
|
|
return r(p)
|
|
}
|