Moving BBSim entrypoint in the cmd folder, building bbsimctl in the container

Change-Id: I4823578ed17c40b13c1c9a561e7aa7e6640f7f19
diff --git a/internal/bbsim/api/grpc_api_server.go b/internal/bbsim/api/grpc_api_server.go
new file mode 100644
index 0000000..27b0ce5
--- /dev/null
+++ b/internal/bbsim/api/grpc_api_server.go
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+
+ * http://www.apache.org/licenses/LICENSE-2.0
+
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package api
+
+import (
+	"context"
+	"github.com/opencord/bbsim/api/bbsim"
+	"github.com/opencord/bbsim/internal/bbsim/devices"
+	log "github.com/sirupsen/logrus"
+)
+
+var logger = log.WithFields(log.Fields{
+	"module": "GrpcApiServer",
+})
+
+var (
+	version    string
+	buildTime  string
+	commitHash string
+	gitStatus  string
+)
+
+type BBSimServer struct {
+}
+
+func (s BBSimServer) Version(ctx context.Context, req *bbsim.Empty) (*bbsim.VersionNumber, error) {
+	// TODO add a flag to specofy whether the tree was clean at this commit or not
+	return &bbsim.VersionNumber{
+		Version:    version,
+		BuildTime:  buildTime,
+		CommitHash: commitHash,
+		GitStatus:  gitStatus,
+	}, nil
+}
+
+func (s BBSimServer) GetOlt(ctx context.Context, req *bbsim.Empty) (*bbsim.Olt, error) {
+	olt := devices.GetOLT()
+	nnis := []*bbsim.NNIPort{}
+	pons := []*bbsim.PONPort{}
+
+	for _, nni := range olt.Nnis {
+		n := bbsim.NNIPort{
+			ID:        int32(nni.ID),
+			OperState: nni.OperState.Current(),
+		}
+		nnis = append(nnis, &n)
+	}
+
+	for _, pon := range olt.Pons {
+		p := bbsim.PONPort{
+			ID:        int32(pon.ID),
+			OperState: pon.OperState.Current(),
+		}
+		pons = append(pons, &p)
+	}
+
+	res := bbsim.Olt{
+		ID:            int32(olt.ID),
+		SerialNumber:  olt.SerialNumber,
+		OperState:     olt.OperState.Current(),
+		InternalState: olt.InternalState.Current(),
+		NNIPorts:      nnis,
+		PONPorts:      pons,
+	}
+	return &res, nil
+}
+
+func (s BBSimServer) GetONUs(ctx context.Context, req *bbsim.Empty) (*bbsim.ONUs, error) {
+	olt := devices.GetOLT()
+	onus := bbsim.ONUs{
+		Items: []*bbsim.ONU{},
+	}
+
+	for _, pon := range olt.Pons {
+		for _, o := range pon.Onus {
+			onu := bbsim.ONU{
+				ID:            int32(o.ID),
+				SerialNumber:  o.Sn(),
+				OperState:     o.OperState.Current(),
+				InternalState: o.InternalState.Current(),
+				PonPortID:     int32(o.PonPortID),
+				STag:          int32(o.STag),
+				CTag:          int32(o.CTag),
+				HwAddress:     o.HwAddress.String(),
+			}
+			onus.Items = append(onus.Items, &onu)
+		}
+	}
+	return &onus, nil
+}