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
metautils
import "github.com/grpc-ecosystem/go-grpc-middleware/util/metautils"
Overview
Imported Packages
Index
- type NiceMD
- func ExtractIncoming(ctx context.Context) NiceMD
- func ExtractOutgoing(ctx context.Context) NiceMD
- func (m NiceMD) Add(key string, value string) NiceMD
- func (m NiceMD) Clone(copiedKeys ...string) NiceMD
- func (m NiceMD) Del(key string) NiceMD
- func (m NiceMD) Get(key string) string
- func (m NiceMD) Set(key string, value string) NiceMD
- func (m NiceMD) ToIncoming(ctx context.Context) context.Context
- func (m NiceMD) ToOutgoing(ctx context.Context) context.Context
Package files
doc.go nicemd.go single_key.go
type NiceMD
type NiceMD metadata.MD
NiceMD is a convenience wrapper definiting extra functions on the metadata.
func ExtractIncoming
func ExtractIncoming(ctx context.Context) NiceMD
ExtractIncoming extracts an inbound metadata from the server-side context.
This function always returns a NiceMD wrapper of the metadata.MD, in case the context doesn't have metadata it returns a new empty NiceMD.
func ExtractOutgoing
func ExtractOutgoing(ctx context.Context) NiceMD
ExtractOutgoing extracts an outbound metadata from the client-side context.
This function always returns a NiceMD wrapper of the metadata.MD, in case the context doesn't have metadata it returns a new empty NiceMD.
func (NiceMD) Add
func (m NiceMD) Add(key string, value string) NiceMD
Add retrieves a single value from the metadata.
It works analogously to http.Header.Add, as it appends to any existing values associated with key.
The function is binary-key safe.
func (NiceMD) Clone
func (m NiceMD) Clone(copiedKeys ...string) NiceMD
Clone performs a deep copy of the metadata.MD.
You can specify the lower-case copiedKeys to only copy certain whitelisted keys. If no keys are explicitly whitelisted all keys get copied.
func (NiceMD) Del
func (m NiceMD) Del(key string) NiceMD
func (NiceMD) Get
func (m NiceMD) Get(key string) string
Get retrieves a single value from the metadata.
It works analogously to http.Header.Get, returning the first value if there are many set. If the value is not set, an empty string is returned.
The function is binary-key safe.
func (NiceMD) Set
func (m NiceMD) Set(key string, value string) NiceMD
Set sets the given value in a metadata.
It works analogously to http.Header.Set, overwriting all previous metadata values.
The function is binary-key safe.
func (NiceMD) ToIncoming
func (m NiceMD) ToIncoming(ctx context.Context) context.Context
ToIncoming sets the given NiceMD as a server-side context for dispatching.
This is mostly useful in ServerInterceptors..
func (NiceMD) ToOutgoing
func (m NiceMD) ToOutgoing(ctx context.Context) context.Context
ToOutgoing sets the given NiceMD as a client-side context for dispatching.
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