Remove attestation server

The attestation server was a concept that was abandoned during the implementation of the BFT block puller.
It is now dead code.

The aim of the attestation server was to pull only headers from the delivery server. It was implemented in a simpler fashion by augmenting the
`seekInfo.ContentType` with `ab.SeekInfo_HEADER_WITH_SIG`
which causes the desired behavior (see common/deliver/deliver.go L338).

Signed-off-by: Yoav Tock <[email protected]>

Author: tock-ibm

common/deliver/deliver.go

@@ -413,21 +413,3 @@ func (h *Handler) validateChannelHeader(ctx context.Context, chdr *cb.ChannelHea
 func noExpiration(_ []byte) time.Time {
 	return time.Time{}
 }
-
-func (h *Handler) HandleAttestation(ctx context.Context, srv *Server, env *cb.Envelope) error {
-	status, err := h.deliverBlocks(ctx, srv, env)
-	if err != nil {
-		return err
-	}
-
-	err = srv.SendStatusResponse(status)
-	if status != cb.Status_SUCCESS {
-		return err
-	}
-	if err != nil {
-		addr := util.ExtractRemoteAddress(ctx)
-		logger.Warningf("Error sending to %s: %s", addr, err)
-		return err
-	}
-	return nil
-}

common/deliver/deliver_test.go

@@ -764,16 +764,6 @@ var _ = Describe("Deliver", func() {
 			Expect(resp).To(Equal(cb.Status_SUCCESS))
 		})
 
-		It("HandleAttestation sends requested block", func() {
-			err := handler.HandleAttestation(context.Background(), server, envelope)
-			Expect(err).NotTo(HaveOccurred())
-			Expect(fakeResponseSender.SendBlockResponseCallCount()).To(Equal(1))
-			b, _, _, _ := fakeResponseSender.SendBlockResponseArgsForCall(0)
-			Expect(b).To(ProtoEqual(&cb.Block{
-				Header: &cb.BlockHeader{Number: 100},
-			}))
-		})
-
 		Context("when sending the success status fails", func() {
 			BeforeEach(func() {
 				fakeResponseSender.SendStatusResponseReturns(errors.New("send-success-fails"))
@@ -783,11 +773,6 @@ var _ = Describe("Deliver", func() {
 				err := handler.Handle(context.Background(), server)
 				Expect(err).To(MatchError("send-success-fails"))
 			})
-
-			It("HandleAttestation returns the error", func() {
-				err := handler.HandleAttestation(context.Background(), server, envelope)
-				Expect(err).To(MatchError("send-success-fails"))
-			})
 		})
 
 		Context("when receive fails", func() {
@@ -831,15 +816,6 @@ var _ = Describe("Deliver", func() {
 				resp := fakeResponseSender.SendStatusResponseArgsForCall(0)
 				Expect(resp).To(Equal(cb.Status_BAD_REQUEST))
 			})
-
-			It("sends a bad envelope to HandleAttestation", func() {
-				err := handler.HandleAttestation(context.Background(), server, envelope)
-				Expect(err).NotTo(HaveOccurred())
-
-				Expect(fakeResponseSender.SendStatusResponseCallCount()).To(Equal(1))
-				resp := fakeResponseSender.SendStatusResponseArgsForCall(0)
-				Expect(resp).To(Equal(cb.Status_BAD_REQUEST))
-			})
 		})
 
 		Context("when unmarshalling the channel header fails", func() {