milo: Add barebones BuildInfo pRPC service.

milo/api/proto/buildinfoserver_dec.go

+// Code generated by svcdec; DO NOT EDIT
+
+package milo
+
+import (
+        proto "github.com/golang/protobuf/proto"
+        context "golang.org/x/net/context"
+)
+
+type DecoratedBuildInfo struct {
+        // Service is the service to decorate.
+        Service BuildInfoServer
+        // Prelude is called for each method before forwarding the call to Service.
+        // If Prelude returns an error, it the call is skipped and the error is
+        // processed via the Postlude (if one is defined), or it is returned directly.
+        Prelude func(c context.Context, methodName string, req proto.Message) (context.Context, error)
+        // Postlude is called for each method after Service has processed the call, or
+        // after the Prelude has returned an error. This takes the the Service's
+        // response proto (which may be nil) and/or any error. The decorated
+        // service will return the response (possibly mutated) and error that Postlude
+        // returns.
+        Postlude func(c context.Context, methodName string, rsp proto.Message, err error) error
+}
+
+func (s *DecoratedBuildInfo) Get(c context.Context, req *BuildInfoRequest) (rsp *BuildInfoResponse, err error) {
+        var newCtx context.Context
+        if s.Prelude != nil {
+                newCtx, err = s.Prelude(c, "Get", req)
+        }
+        if err == nil {
+                c = newCtx
+                rsp, err = s.Service.Get(c, req)
+        }
+        if s.Postlude != nil {
+                err = s.Postlude(c, "Get", rsp, err)
+        }
+        return
+}