/
grpc.go
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/
grpc.go
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package grpc
import (
"context"
"net"
"strings"
"github.com/wlMalk/goms/goms/correlation"
"github.com/wlMalk/goms/goms/log/contextual"
"github.com/wlMalk/goms/goms/request"
"github.com/wlMalk/goms/goms/service"
"github.com/go-kit/kit/log"
kit_grpc "github.com/go-kit/kit/transport/grpc"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
)
type Server struct {
Listener net.Listener
Server *grpc.Server
}
func NewServer(listener net.Listener, opts ...grpc.ServerOption) *Server {
return &Server{
Listener: listener,
Server: grpc.NewServer(opts...),
}
}
func (s *Server) Serve() error {
return s.Server.Serve(s.Listener)
}
func (s *Server) GracefulStop() {
s.Server.GracefulStop()
}
func LoggerInjector(logger log.Logger) kit_grpc.ServerRequestFunc {
return func(ctx context.Context, md metadata.MD) context.Context {
requestID := request.GetRequestID(ctx)
logger = contextual.ContextualLogger(ctx, logger, "request-id", requestID)
return contextual.SetLogger(ctx, logger)
}
}
func RequestIDCreator() kit_grpc.ServerRequestFunc {
return func(ctx context.Context, md metadata.MD) context.Context {
requestID := request.NewRequestID()
return request.SetRequestID(ctx, requestID)
}
}
func CorrelationIDExtractor() kit_grpc.ServerRequestFunc {
return func(ctx context.Context, md metadata.MD) context.Context {
s := md.Get("Correlation-ID")
var correlationID string
if len(s) > 0 {
correlationID = s[0]
} else {
correlationID = correlation.NewCorrelationID()
}
return correlation.SetCorrelationID(ctx, correlationID)
}
}
func RequestIDExtractor() kit_grpc.ServerRequestFunc {
return func(ctx context.Context, md metadata.MD) context.Context {
s := md.Get("Caller-Request-ID")
var requestID string
if len(s) > 0 {
requestID = s[0]
} else {
return ctx
}
return request.SetCallerRequestID(ctx, requestID)
}
}
func CorrelationIDInjector() kit_grpc.ClientRequestFunc {
return func(ctx context.Context, md *metadata.MD) context.Context {
correlationID := correlation.GetCorrelationID(ctx)
if len(strings.TrimSpace(correlationID)) > 0 {
md.Set("Correlation-ID", correlationID)
}
return ctx
}
}
func RequestIDInjector() kit_grpc.ClientRequestFunc {
return func(ctx context.Context, md *metadata.MD) context.Context {
requestID := request.GetRequestID(ctx)
if len(strings.TrimSpace(requestID)) > 0 {
md.Set("Caller-Request-ID", requestID)
}
return ctx
}
}
func MethodInjector(ser string, met string) kit_grpc.ServerRequestFunc {
return func(ctx context.Context, md metadata.MD) context.Context {
method := service.NewMethod(ser, met)
return service.SetMethod(ctx, method)
}
}