forked from go-kit/kit
/
factory.go
51 lines (46 loc) · 1.6 KB
/
factory.go
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package grpc
import (
"io"
kitot "github.com/go-kit/kit/tracing/opentracing"
"github.com/opentracing/opentracing-go"
"google.golang.org/grpc"
"github.com/go-kit/kit/endpoint"
"github.com/go-kit/kit/examples/addsvc/pb"
"github.com/go-kit/kit/loadbalancer"
"github.com/go-kit/kit/log"
grpctransport "github.com/go-kit/kit/transport/grpc"
)
// MakeSumEndpointFactory returns a loadbalancer.Factory that transforms GRPC
// host:port strings into Endpoints that call the Sum method on a GRPC server
// at that address.
func MakeSumEndpointFactory(tracer opentracing.Tracer, tracingLogger log.Logger) loadbalancer.Factory {
return func(instance string) (endpoint.Endpoint, io.Closer, error) {
cc, err := grpc.Dial(instance, grpc.WithInsecure())
return grpctransport.NewClient(
cc,
"Add",
"Sum",
encodeSumRequest,
decodeSumResponse,
pb.SumReply{},
grpctransport.SetClientBefore(kitot.ToGRPCRequest(tracer, tracingLogger)),
).Endpoint(), cc, err
}
}
// MakeConcatEndpointFactory returns a loadbalancer.Factory that transforms
// GRPC host:port strings into Endpoints that call the Concat method on a GRPC
// server at that address.
func MakeConcatEndpointFactory(tracer opentracing.Tracer, tracingLogger log.Logger) loadbalancer.Factory {
return func(instance string) (endpoint.Endpoint, io.Closer, error) {
cc, err := grpc.Dial(instance, grpc.WithInsecure())
return grpctransport.NewClient(
cc,
"Add",
"Concat",
encodeConcatRequest,
decodeConcatResponse,
pb.ConcatReply{},
grpctransport.SetClientBefore(kitot.ToGRPCRequest(tracer, tracingLogger)),
).Endpoint(), cc, err
}
}