Added sync

pkg/sync/syncservice.go

@@ -0,0 +1,49 @@
+// sync merges shared state between two nodes
+package sync
+
+import (
+	"context"
+	"errors"
+
+	"github.com/tim-beatham/wgmesh/pkg/ctrlserver"
+	"github.com/tim-beatham/wgmesh/pkg/rpc"
+)
+
+type SyncServiceImpl struct {
+	server *ctrlserver.MeshCtrlServer
+}
+
+// GetMesh: Gets a nodes local mesh configuration as a CRDT
+func (s *SyncServiceImpl) GetConf(context context.Context, request *rpc.GetConfRequest) (*rpc.GetConfReply, error) {
+	mesh := s.server.MeshManager.GetMesh(request.MeshId)
+
+	if mesh == nil {
+		return nil, errors.New("mesh does not exist")
+	}
+
+	meshBytes := mesh.Save()
+
+	reply := rpc.GetConfReply{
+		Mesh: meshBytes,
+	}
+
+	return &reply, nil
+}
+
+// Sync: Pings a node and syncs the mesh configuration with the other node
+func (s *SyncServiceImpl) SyncMesh(conext context.Context, request *rpc.SyncMeshRequest) (*rpc.SyncMeshReply, error) {
+	mesh := s.server.MeshManager.GetMesh(request.MeshId)
+
+	if mesh == nil {
+		return nil, errors.New("mesh does not exist")
+	}
+
+	err := s.server.MeshManager.UpdateMesh(request.MeshId, request.Changes)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &rpc.SyncMeshReply{Success: true}, nil
+}
+