HONEYCOMB-61: Add BA broker for context data tree

With broker, context data can be accessed in a transactional
manner, same as config data

+ Renamed data-api concepts to not include DataTree
+ Renamed context related concepts to better distinguish between them
+ Now passing full ReadContext to read customizers
+ Naming context is backed by context data broker

Change-Id: I0b2876dd74a31a9ced7d9b5145672868e12f8b82
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

21 files changed, 136 insertions, 125 deletions

diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/InterfaceCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/InterfaceCustomizer.java
index e6ed62acf..eb6426241 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/InterfaceCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/InterfaceCustomizer.java
@@ -57,7 +57,7 @@ public class InterfaceCustomizer extends FutureJVppCustomizer implements ListWri
         throws WriteFailedException {
 
         try {
-            setInterface(id, dataAfter);
+            setInterface(id, dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Update of VppInterfaceAugment failed", e);
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
@@ -72,7 +72,7 @@ public class InterfaceCustomizer extends FutureJVppCustomizer implements ListWri
         throws WriteFailedException.UpdateFailedException {
 
         try {
-            updateInterface(id, dataBefore, dataAfter);
+            updateInterface(id, dataBefore, dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Update of VppInterfaceAugment failed", e);
             throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter, e);
@@ -95,25 +95,25 @@ public class InterfaceCustomizer extends FutureJVppCustomizer implements ListWri
     }
 
 
-    private void setInterface(final InstanceIdentifier<Interface> id, final Interface swIf)
+    private void setInterface(final InstanceIdentifier<Interface> id, final Interface swIf,
+                              final WriteContext writeContext)
         throws VppApiInvocationException, WriteFailedException {
         LOG.debug("Setting interface: {} to: {}", id, swIf);
-        setInterfaceAttributes(swIf, swIf.getName());
+        setInterfaceAttributes(swIf, swIf.getName(), writeContext);
     }
 
-    private void setInterfaceAttributes(final Interface swIf, final String swIfName)
+    private void setInterfaceAttributes(final Interface swIf, final String swIfName, final WriteContext writeContext)
         throws VppApiInvocationException {
 
-        setInterfaceFlags(swIfName, interfaceContext.getIndex(swIfName),
+        setInterfaceFlags(swIfName, interfaceContext.getIndex(swIfName, writeContext.getMappingContext()),
             swIf.isEnabled() ? (byte) 1 : (byte) 0);
     }
 
     private void updateInterface(final InstanceIdentifier<Interface> id,
                                  final Interface dataBefore,
-                                 final Interface dataAfter) throws VppApiInvocationException {
+                                 final Interface dataAfter, final WriteContext writeContext) throws VppApiInvocationException {
         LOG.debug("Updating interface:{} to: {}", id, dataAfter);
-
-        setInterfaceAttributes(dataAfter, dataAfter.getName());
+        setInterfaceAttributes(dataAfter, dataAfter.getName(), writeContext);
     }
 
     private void setInterfaceFlags(final String swIfName, final int swIfIndex, final byte enabled)
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/L2Customizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/L2Customizer.java
index fc43cdb7e..5aea5de2b 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/L2Customizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/L2Customizer.java
@@ -69,9 +69,9 @@ public class L2Customizer extends FutureJVppCustomizer implements ChildWriterCus
         throws WriteFailedException {
 
         final String ifcName = id.firstKeyOf(Interface.class).getName();
-        final int swIfc = interfaceContext.getIndex(ifcName);
+        final int swIfc = interfaceContext.getIndex(ifcName, writeContext.getMappingContext());
         try {
-            setL2(id, swIfc, ifcName, dataAfter);
+            setL2(id, swIfc, ifcName, dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Write of L2 failed", e);
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
@@ -84,10 +84,10 @@ public class L2Customizer extends FutureJVppCustomizer implements ChildWriterCus
         throws WriteFailedException {
 
         final String ifcName = id.firstKeyOf(Interface.class).getName();
-        final int swIfc = interfaceContext.getIndex(ifcName);
+        final int swIfc = interfaceContext.getIndex(ifcName, writeContext.getMappingContext());
         // TODO handle update properly (if possible)
         try {
-            setL2(id, swIfc, ifcName, dataAfter);
+            setL2(id, swIfc, ifcName, dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Update of L2 failed", e);
             throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter, e);
@@ -100,21 +100,22 @@ public class L2Customizer extends FutureJVppCustomizer implements ChildWriterCus
         // TODO implement delete (if possible)
     }
 
-    private void setL2(final InstanceIdentifier<L2> id, final int swIfIndex, final String ifcName, final L2 vppL2)
+    private void setL2(final InstanceIdentifier<L2> id, final int swIfIndex, final String ifcName, final L2 vppL2,
+                       final WriteContext writeContext)
         throws VppApiInvocationException, WriteFailedException {
         LOG.debug("Setting L2 for interface: {}", ifcName);
         // Nothing besides interconnection here
-        setInterconnection(id, swIfIndex, ifcName, vppL2);
+        setInterconnection(id, swIfIndex, ifcName, vppL2, writeContext);
     }
 
     private void setInterconnection(final InstanceIdentifier<L2> id, final int swIfIndex, final String ifcName,
-                                    final L2 vppL2)
+                                    final L2 vppL2, final WriteContext writeContext)
         throws VppApiInvocationException, WriteFailedException {
         Interconnection ic = vppL2.getInterconnection();
         if (ic instanceof XconnectBased) {
-            setXconnectBasedL2(swIfIndex, ifcName, (XconnectBased) ic);
+            setXconnectBasedL2(swIfIndex, ifcName, (XconnectBased) ic, writeContext);
         } else if (ic instanceof BridgeBased) {
-            setBridgeBasedL2(swIfIndex, ifcName, (BridgeBased) ic);
+            setBridgeBasedL2(swIfIndex, ifcName, (BridgeBased) ic, writeContext);
         } else {
             // FIXME how does choice extensibility work
             // FIXME it is not even possible to create a dedicated customizer for Interconnection, since it's not a DataObject
@@ -125,7 +126,8 @@ public class L2Customizer extends FutureJVppCustomizer implements ChildWriterCus
         }
     }
 
-    private void setBridgeBasedL2(final int swIfIndex, final String ifcName, final BridgeBased bb)
+    private void setBridgeBasedL2(final int swIfIndex, final String ifcName, final BridgeBased bb,
+                                  final WriteContext writeContext)
         throws VppApiInvocationException {
 
         LOG.debug("Setting bridge based interconnection(bridge-domain={}) for interface: {}",
@@ -133,7 +135,7 @@ public class L2Customizer extends FutureJVppCustomizer implements ChildWriterCus
 
         String bdName = bb.getBridgeDomain();
 
-        int bdId = bridgeDomainContext.getIndex(bdName);
+        int bdId = bridgeDomainContext.getIndex(bdName, writeContext.getMappingContext());
         checkArgument(bdId > 0, "Unable to set Interconnection for Interface: %s, bridge domain: %s does not exist",
             ifcName, bdName);
 
@@ -168,14 +170,15 @@ public class L2Customizer extends FutureJVppCustomizer implements ChildWriterCus
         return swInterfaceSetL2Bridge;
     }
 
-    private void setXconnectBasedL2(final int swIfIndex, final String ifcName, final XconnectBased ic)
+    private void setXconnectBasedL2(final int swIfIndex, final String ifcName, final XconnectBased ic,
+                                    final WriteContext writeContext)
         throws VppApiInvocationException {
 
         String outSwIfName = ic.getXconnectOutgoingInterface();
         LOG.debug("Setting xconnect based interconnection(outgoing ifc={}) for interface: {}", outSwIfName,
             ifcName);
 
-        int outSwIfIndex = interfaceContext.getIndex(outSwIfName);
+        int outSwIfIndex = interfaceContext.getIndex(outSwIfName, writeContext.getMappingContext());
         checkArgument(outSwIfIndex > 0,
             "Unable to set Interconnection for Interface: %s, outgoing interface: %s does not exist",
             ifcName, outSwIfIndex);
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/RoutingCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/RoutingCustomizer.java
index 4d17ba098..bf355e479 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/RoutingCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/RoutingCustomizer.java
@@ -60,7 +60,7 @@ public class RoutingCustomizer extends FutureJVppCustomizer implements ChildWrit
         throws WriteFailedException.CreateFailedException {
 
         try {
-            setRouting(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            setRouting(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Update of Routing failed", e);
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
@@ -75,7 +75,7 @@ public class RoutingCustomizer extends FutureJVppCustomizer implements ChildWrit
 
         try {
             // TODO handle updates properly
-            setRouting(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            setRouting(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Update of Routing failed", e);
             throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter, e);
@@ -88,8 +88,8 @@ public class RoutingCustomizer extends FutureJVppCustomizer implements ChildWrit
         // TODO implement delete
     }
 
-    private void setRouting(final String name, final Routing rt) throws VppApiInvocationException {
-        final int swIfc = interfaceContext.getIndex(name);
+    private void setRouting(final String name, final Routing rt, final WriteContext writeContext) throws VppApiInvocationException {
+        final int swIfc = interfaceContext.getIndex(name, writeContext.getMappingContext());
         LOG.debug("Setting routing for interface: {}, {}. Routing: {}", name, swIfc, rt);
 
         int vrfId = (rt != null)
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/SubInterfaceCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/SubInterfaceCustomizer.java
index ecf2337e8..fb47b6a9f 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/SubInterfaceCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/SubInterfaceCustomizer.java
@@ -75,15 +75,16 @@ public class SubInterfaceCustomizer extends AbstractInterfaceTypeCustomizer<SubI
                                        @Nonnull final SubInterface dataAfter, @Nonnull final WriteContext writeContext)
             throws WriteFailedException.CreateFailedException {
         try {
-            createSubInterface(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            createSubInterface(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
         }
     }
 
-    private void createSubInterface(final String swIfName, final SubInterface subInterface) throws VppApiInvocationException {
+    private void createSubInterface(final String swIfName, final SubInterface subInterface,
+                                    final WriteContext writeContext) throws VppApiInvocationException {
         final String superIfName = subInterface.getSuperInterface();
-        final int swIfIndex = interfaceContext.getIndex(superIfName);
+        final int swIfIndex = interfaceContext.getIndex(superIfName, writeContext.getMappingContext());
         LOG.debug("Creating sub interface of {}(id={}): name={}, subInterface={}", superIfName, swIfIndex, swIfName, subInterface);
         final CompletionStage<CreateSubifReply> createSubifReplyCompletionStage =
                 getFutureJVpp().createSubif(getCreateSubifRequest(subInterface, swIfIndex));
@@ -96,7 +97,7 @@ public class SubInterfaceCustomizer extends AbstractInterfaceTypeCustomizer<SubI
         } else {
             LOG.debug("Sub interface created successfully for: {}, subInterface: {}", swIfName, subInterface);
             // Add new interface to our interface context
-            interfaceContext.addName(reply.swIfIndex, swIfName);
+            interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
         }
     }
 
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/TapCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/TapCustomizer.java
index 72679fe12..bafe788ad 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/TapCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/TapCustomizer.java
@@ -69,7 +69,7 @@ public class TapCustomizer extends AbstractInterfaceTypeCustomizer<Tap> {
                                        @Nonnull final WriteContext writeContext)
         throws WriteFailedException.CreateFailedException {
         try {
-            createTap(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            createTap(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Write of Tap failed", e);
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
@@ -84,7 +84,7 @@ public class TapCustomizer extends AbstractInterfaceTypeCustomizer<Tap> {
 
         final int index;
         try {
-            index = interfaceContext.getIndex(ifcName);
+            index = interfaceContext.getIndex(ifcName, writeContext.getMappingContext());
         } catch (IllegalArgumentException e) {
             throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter, e);
         }
@@ -105,20 +105,20 @@ public class TapCustomizer extends AbstractInterfaceTypeCustomizer<Tap> {
 
         final int index;
         try {
-            index = interfaceContext.getIndex(ifcName);
+            index = interfaceContext.getIndex(ifcName, writeContext.getMappingContext());
         } catch (IllegalArgumentException e) {
             throw new WriteFailedException.DeleteFailedException(id, e);
         }
 
         try {
-            deleteTap(ifcName, index, dataBefore);
+            deleteTap(ifcName, index, dataBefore, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Delete of Tap failed", e);
             throw new WriteFailedException.DeleteFailedException(id, e);
         }
     }
 
-    private void createTap(final String swIfName, final Tap tap) throws VppApiInvocationException {
+    private void createTap(final String swIfName, final Tap tap, final WriteContext writeContext) throws VppApiInvocationException {
         LOG.debug("Setting tap interface: {}. Tap: {}", swIfName, tap);
         final CompletionStage<TapConnectReply> tapConnectFuture =
             getFutureJVpp().tapConnect(getTapConnectRequest(tap.getTapName(), tap.getMac(), tap.getDeviceInstance()));
@@ -130,7 +130,7 @@ public class TapCustomizer extends AbstractInterfaceTypeCustomizer<Tap> {
         } else {
             LOG.debug("Tap set successfully for: {}, tap: {}", swIfName, tap);
             // Add new interface to our interface context
-            interfaceContext.addName(reply.swIfIndex, swIfName);
+            interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
         }
     }
 
@@ -148,7 +148,8 @@ public class TapCustomizer extends AbstractInterfaceTypeCustomizer<Tap> {
         }
     }
 
-    private void deleteTap(final String swIfName, final int index, final Tap dataBefore)
+    private void deleteTap(final String swIfName, final int index, final Tap dataBefore,
+                           final WriteContext writeContext)
         throws VppApiInvocationException {
         LOG.debug("Deleting tap interface: {}. Tap: {}", swIfName, dataBefore);
         final CompletionStage<TapDeleteReply> vxlanAddDelTunnelReplyCompletionStage =
@@ -161,7 +162,7 @@ public class TapCustomizer extends AbstractInterfaceTypeCustomizer<Tap> {
         } else {
             LOG.debug("Tap deleted successfully for: {}, tap: {}", swIfName, dataBefore);
             // Remove deleted interface from interface context
-            interfaceContext.removeName(swIfName);
+            interfaceContext.removeName(swIfName, writeContext.getMappingContext());
         }
     }
 
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VhostUserCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VhostUserCustomizer.java
index ebefff34a..5f7d626e8 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VhostUserCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VhostUserCustomizer.java
@@ -73,13 +73,13 @@ public class VhostUserCustomizer extends AbstractInterfaceTypeCustomizer<VhostUs
                                        @Nonnull final VhostUser dataAfter, @Nonnull final WriteContext writeContext)
             throws WriteFailedException.CreateFailedException {
         try {
-            createVhostUserIf(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            createVhostUserIf(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException | IllegalInterfaceTypeException e) {
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
         }
     }
 
-    private void createVhostUserIf(final String swIfName, final VhostUser vhostUser) throws VppApiInvocationException {
+    private void createVhostUserIf(final String swIfName, final VhostUser vhostUser, final WriteContext writeContext) throws VppApiInvocationException {
         LOG.debug("Creating vhost user interface: name={}, vhostUser={}", swIfName, vhostUser);
         final CompletionStage<CreateVhostUserIfReply> createVhostUserIfReplyCompletionStage =
                 getFutureJVpp().createVhostUserIf(getCreateVhostUserIfRequest(vhostUser));
@@ -92,7 +92,7 @@ public class VhostUserCustomizer extends AbstractInterfaceTypeCustomizer<VhostUs
         } else {
             LOG.debug("Vhost user interface created successfully for: {}, vhostUser: {}", swIfName, vhostUser);
             // Add new interface to our interface context
-            interfaceContext.addName(reply.swIfIndex, swIfName);
+            interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
         }
     }
 
@@ -118,17 +118,17 @@ public class VhostUserCustomizer extends AbstractInterfaceTypeCustomizer<VhostUs
         }
 
         try {
-            modifyVhostUserIf(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            modifyVhostUserIf(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter, e);
         }
     }
 
-    private void modifyVhostUserIf(final String swIfName, final VhostUser vhostUser) throws VppApiInvocationException {
+    private void modifyVhostUserIf(final String swIfName, final VhostUser vhostUser, final WriteContext writeContext) throws VppApiInvocationException {
         LOG.debug("Updating vhost user interface: name={}, vhostUser={}", swIfName, vhostUser);
         final CompletionStage<ModifyVhostUserIfReply> modifyVhostUserIfReplyCompletionStage =
                 getFutureJVpp()
-                        .modifyVhostUserIf(getModifyVhostUserIfRequest(vhostUser, interfaceContext.getIndex(swIfName)));
+                        .modifyVhostUserIf(getModifyVhostUserIfRequest(vhostUser, interfaceContext.getIndex(swIfName, writeContext.getMappingContext())));
 
         final ModifyVhostUserIfReply reply =
                 V3poUtils.getReply(modifyVhostUserIfReplyCompletionStage.toCompletableFuture());
@@ -155,16 +155,16 @@ public class VhostUserCustomizer extends AbstractInterfaceTypeCustomizer<VhostUs
                                         @Nonnull final VhostUser dataBefore, @Nonnull final WriteContext writeContext)
             throws WriteFailedException.DeleteFailedException {
         try {
-            deleteVhostUserIf(id.firstKeyOf(Interface.class).getName(), dataBefore);
+            deleteVhostUserIf(id.firstKeyOf(Interface.class).getName(), dataBefore, writeContext);
         } catch (VppApiInvocationException e) {
             throw new WriteFailedException.DeleteFailedException(id, e);
         }
     }
 
-    private void deleteVhostUserIf(final String swIfName, final VhostUser vhostUser) throws VppApiInvocationException {
+    private void deleteVhostUserIf(final String swIfName, final VhostUser vhostUser, final WriteContext writeContext) throws VppApiInvocationException {
         LOG.debug("Deleting vhost user interface: name={}, vhostUser={}", swIfName, vhostUser);
         final CompletionStage<DeleteVhostUserIfReply> deleteVhostUserIfReplyCompletionStage =
-                getFutureJVpp().deleteVhostUserIf(getDeleteVhostUserIfRequest(interfaceContext.getIndex(swIfName)));
+                getFutureJVpp().deleteVhostUserIf(getDeleteVhostUserIfRequest(interfaceContext.getIndex(swIfName, writeContext.getMappingContext())));
 
         final DeleteVhostUserIfReply reply =
                 V3poUtils.getReply(deleteVhostUserIfReplyCompletionStage.toCompletableFuture());
@@ -174,7 +174,7 @@ public class VhostUserCustomizer extends AbstractInterfaceTypeCustomizer<VhostUs
         } else {
             LOG.debug("Vhost user interface deleted successfully for: {}, vhostUser: {}", swIfName, vhostUser);
             // Remove interface from our interface context
-            interfaceContext.removeName(swIfName);
+            interfaceContext.removeName(swIfName, writeContext.getMappingContext());
         }
     }
 
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VlanTagRewriteCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VlanTagRewriteCustomizer.java
index 7e7e319eb..d1e55a0a0 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VlanTagRewriteCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VlanTagRewriteCustomizer.java
@@ -70,14 +70,15 @@ public class VlanTagRewriteCustomizer extends FutureJVppCustomizer implements Ch
                                        @Nonnull final VlanTagRewrite dataAfter, @Nonnull final WriteContext writeContext)
             throws WriteFailedException.CreateFailedException {
         try {
-            setTagRewrite(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            setTagRewrite(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
         }
     }
 
-    private void setTagRewrite(final String ifname, final VlanTagRewrite cfg) throws VppApiInvocationException {
-        final int swIfIndex = interfaceContext.getIndex(ifname);
+    private void setTagRewrite(final String ifname, final VlanTagRewrite cfg, final WriteContext writeContext)
+        throws VppApiInvocationException {
+        final int swIfIndex = interfaceContext.getIndex(ifname, writeContext.getMappingContext());
         LOG.debug("Setting tag rewrite for interface {}(id=): {}", ifname, swIfIndex, cfg);
 
         final CompletionStage<L2InterfaceVlanTagRewriteReply> replyCompletionStage =
@@ -121,7 +122,7 @@ public class VlanTagRewriteCustomizer extends FutureJVppCustomizer implements Ch
             return;
         }
         try {
-            setTagRewrite(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            setTagRewrite(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter, e);
         }
@@ -135,7 +136,7 @@ public class VlanTagRewriteCustomizer extends FutureJVppCustomizer implements Ch
             // disable tag rewrite
             final VlanTagRewriteBuilder builder = new VlanTagRewriteBuilder();
             builder.setRewriteOperation(TagRewriteOperation.Disabled);
-            setTagRewrite(id.firstKeyOf(Interface.class).getName(), builder.build());
+            setTagRewrite(id.firstKeyOf(Interface.class).getName(), builder.build(), writeContext);
         } catch (VppApiInvocationException e) {
             throw new WriteFailedException.DeleteFailedException(id, e);
         }
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VxlanCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VxlanCustomizer.java
index 9d11b59b1..3edd531c6 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VxlanCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VxlanCustomizer.java
@@ -71,7 +71,7 @@ public class VxlanCustomizer extends AbstractInterfaceTypeCustomizer<Vxlan> {
                                        @Nonnull final WriteContext writeContext)
             throws WriteFailedException.CreateFailedException {
         try {
-            createVxlanTunnel(id.firstKeyOf(Interface.class).getName(), dataAfter);
+            createVxlanTunnel(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
         } catch (VppApiInvocationException | IllegalInterfaceTypeException e) {
             LOG.warn("Write of Vxlan failed", e);
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
@@ -95,14 +95,14 @@ public class VxlanCustomizer extends AbstractInterfaceTypeCustomizer<Vxlan> {
                                         @Nonnull final WriteContext writeContext)
             throws WriteFailedException.DeleteFailedException {
         try {
-            deleteVxlanTunnel(id.firstKeyOf(Interface.class).getName(), dataBefore);
+            deleteVxlanTunnel(id.firstKeyOf(Interface.class).getName(), dataBefore, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Delete of Vxlan tunnel failed", e);
             throw new WriteFailedException.DeleteFailedException(id, e);
         }
     }
 
-    private void createVxlanTunnel(final String swIfName, final Vxlan vxlan) throws VppApiInvocationException {
+    private void createVxlanTunnel(final String swIfName, final Vxlan vxlan, final WriteContext writeContext) throws VppApiInvocationException {
         final byte isIpv6 = (byte) (isIpv6(vxlan) ? 1 : 0);
         final InetAddress srcAddress = InetAddresses.forString(getAddressString(vxlan.getSrc()));
         final InetAddress dstAddress = InetAddresses.forString(getAddressString(vxlan.getDst()));
@@ -123,7 +123,7 @@ public class VxlanCustomizer extends AbstractInterfaceTypeCustomizer<Vxlan> {
         } else {
             LOG.debug("Vxlan tunnel set successfully for: {}, vxlan: {}", swIfName, vxlan);
             // Add new interface to our interface context
-            interfaceContext.addName(reply.swIfIndex, swIfName);
+            interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
         }
     }
 
@@ -143,7 +143,7 @@ public class VxlanCustomizer extends AbstractInterfaceTypeCustomizer<Vxlan> {
         return addr.getIpv4Address() == null ? addr.getIpv6Address().getValue() : addr.getIpv4Address().getValue();
     }
 
-    private void deleteVxlanTunnel(final String swIfName, final Vxlan vxlan) throws VppApiInvocationException {
+    private void deleteVxlanTunnel(final String swIfName, final Vxlan vxlan, final WriteContext writeContext) throws VppApiInvocationException {
         final byte isIpv6 = (byte) (isIpv6(vxlan) ? 1 : 0);
         final InetAddress srcAddress = InetAddresses.forString(getAddressString(vxlan.getSrc()));
         final InetAddress dstAddress = InetAddresses.forString(getAddressString(vxlan.getDst()));
@@ -164,7 +164,7 @@ public class VxlanCustomizer extends AbstractInterfaceTypeCustomizer<Vxlan> {
         } else {
             LOG.debug("Vxlan tunnel deleted successfully for: {}, vxlan: {}", swIfName, vxlan);
             // Remove interface from our interface context
-            interfaceContext.removeName(swIfName);
+            interfaceContext.removeName(swIfName, writeContext.getMappingContext());
         }
     }
 
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/ip/Ipv4Customizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/ip/Ipv4Customizer.java
index a54f6c5e3..4deb38f52 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/ip/Ipv4Customizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/ip/Ipv4Customizer.java
@@ -68,7 +68,7 @@ public class Ipv4Customizer extends FutureJVppCustomizer implements ChildWriterC
         throws WriteFailedException {
         try {
             final String ifcName = id.firstKeyOf(Interface.class).getName();
-            setIpv4(id, ifcName, dataAfter);
+            setIpv4(id, ifcName, dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Create of Ipv4 failed", e);
             throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
@@ -84,7 +84,7 @@ public class Ipv4Customizer extends FutureJVppCustomizer implements ChildWriterC
 
         // TODO handle update in a better way
         try {
-            setIpv4(id, ifcName, dataAfter);
+            setIpv4(id, ifcName, dataAfter, writeContext);
         } catch (VppApiInvocationException e) {
             LOG.warn("Update of Ipv4 failed", e);
             throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter, e);
@@ -97,9 +97,10 @@ public class Ipv4Customizer extends FutureJVppCustomizer implements ChildWriterC
         // TODO implement delete
     }
 
-    private void setIpv4(final InstanceIdentifier<Ipv4> id, final String name, final Ipv4 ipv4)
+    private void setIpv4(final InstanceIdentifier<Ipv4> id, final String name, final Ipv4 ipv4,
+                         final WriteContext writeContext)
         throws WriteFailedException, VppApiInvocationException {
-        final int swIfc = interfaceContext.getIndex(name);
+        final int swIfc = interfaceContext.getIndex(name, writeContext.getMappingContext());
 
         for (Address ipv4Addr : ipv4.getAddress()) {
             Subnet subnet = ipv4Addr.getSubnet();
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/EthernetCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/EthernetCustomizer.java
index 74ea45c11..8173b67ba 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/EthernetCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/EthernetCustomizer.java
@@ -16,7 +16,9 @@
 
 package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
 
-import io.fd.honeycomb.v3po.translate.Context;
+import static io.fd.honeycomb.v3po.translate.v3po.interfacesstate.InterfaceCustomizer.getCachedInterfaceDump;
+
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -64,11 +66,11 @@ public class EthernetCustomizer extends FutureJVppCustomizer
     @Override
     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<Ethernet> id,
                                       @Nonnull final EthernetBuilder builder,
-                                      @Nonnull final Context ctx) throws ReadFailedException {
+                                      @Nonnull final ReadContext ctx) throws ReadFailedException {
 
         final InterfaceKey key = id.firstKeyOf(Interface.class);
         final SwInterfaceDetails iface = InterfaceUtils.getVppInterfaceDetails(getFutureJVpp(), key,
-                interfaceContext.getIndex(key.getName()), ctx);
+                interfaceContext.getIndex(key.getName(), ctx.getMappingContext()), ctx.getModificationCache());
 
         builder.setMtu((int) iface.linkMtu);
         switch (iface.linkDuplex) {
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceCustomizer.java
index 51d4022d7..87c62f48f 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceCustomizer.java
@@ -16,7 +16,8 @@
 
 package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
 
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.ModificationCache;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ListReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -69,13 +70,13 @@ public class InterfaceCustomizer extends FutureJVppCustomizer
 
     @Override
     public void readCurrentAttributes(@Nonnull InstanceIdentifier<Interface> id, @Nonnull InterfaceBuilder builder,
-                                      @Nonnull Context ctx) throws ReadFailedException {
+                                      @Nonnull ReadContext ctx) throws ReadFailedException {
         LOG.debug("Reading attributes for interface: {}", id);
         final InterfaceKey key = id.firstKeyOf(id.getTargetType());
 
         // Pass cached details from getAllIds to getDetails to avoid additional dumps
         final SwInterfaceDetails iface = InterfaceUtils.getVppInterfaceDetails(getFutureJVpp(), key,
-            interfaceContext.getIndex(key.getName()), ctx);
+            interfaceContext.getIndex(key.getName(), ctx.getMappingContext()), ctx.getModificationCache());
         LOG.debug("Interface details for interface: {}, details: {}", key.getName(), iface);
 
         builder.setName(key.getName());
@@ -94,7 +95,7 @@ public class InterfaceCustomizer extends FutureJVppCustomizer
 
     @Nonnull
     @SuppressWarnings("unchecked")
-    public static Map<Integer, SwInterfaceDetails> getCachedInterfaceDump(final @Nonnull Context ctx) {
+    public static Map<Integer, SwInterfaceDetails> getCachedInterfaceDump(final @Nonnull ModificationCache ctx) {
         return ctx.get(DUMPED_IFCS_CONTEXT_KEY) == null
             ? new HashMap<>() // allow customizers to update the cache
             : (Map<Integer, SwInterfaceDetails>) ctx.get(DUMPED_IFCS_CONTEXT_KEY);
@@ -103,7 +104,7 @@ public class InterfaceCustomizer extends FutureJVppCustomizer
     @Nonnull
     @Override
     public List<InterfaceKey> getAllIds(@Nonnull final InstanceIdentifier<Interface> id,
-                                        @Nonnull final Context context) throws ReadFailedException {
+                                        @Nonnull final ReadContext context) throws ReadFailedException {
         LOG.trace("Dumping all interfaces to get all IDs");
 
         final SwInterfaceDump request = new SwInterfaceDump();
@@ -120,20 +121,20 @@ public class InterfaceCustomizer extends FutureJVppCustomizer
         }
 
         // Cache interfaces dump in per-tx context to later be used in readCurrentAttributes
-        context.put(DUMPED_IFCS_CONTEXT_KEY, ifaces.swInterfaceDetails.stream()
+        context.getModificationCache().put(DUMPED_IFCS_CONTEXT_KEY, ifaces.swInterfaceDetails.stream()
             .collect(Collectors.toMap(t -> t.swIfIndex, swInterfaceDetails -> swInterfaceDetails)));
 
         final List<InterfaceKey> interfacesKeys = ifaces.swInterfaceDetails.stream()
             .filter(elt -> elt != null)
             .map((elt) -> {
                 // Store interface name from VPP in context if not yet present
-                if (!interfaceContext.containsName(elt.swIfIndex)) {
-                    interfaceContext.addName(elt.swIfIndex, V3poUtils.toString(elt.interfaceName));
+                if (!interfaceContext.containsName(elt.swIfIndex, context.getMappingContext())) {
+                    interfaceContext.addName(elt.swIfIndex, V3poUtils.toString(elt.interfaceName), context.getMappingContext());
                 }
                 LOG.trace("Interface with name: {}, VPP name: {} and index: {} found in VPP",
-                    interfaceContext.getName(elt.swIfIndex), elt.interfaceName, elt.swIfIndex);
+                    interfaceContext.getName(elt.swIfIndex, context.getMappingContext()), elt.interfaceName, elt.swIfIndex);
 
-                return new InterfaceKey(interfaceContext.getName(elt.swIfIndex));
+                return new InterfaceKey(interfaceContext.getName(elt.swIfIndex, context.getMappingContext()));
             })
             .collect(Collectors.toList());
 
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceUtils.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceUtils.java
index a6c887336..ee66aef1f 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceUtils.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/InterfaceUtils.java
@@ -21,7 +21,7 @@ import static io.fd.honeycomb.v3po.translate.v3po.interfacesstate.InterfaceCusto
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Iterables;
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.ModificationCache;
 import io.fd.honeycomb.v3po.translate.v3po.utils.V3poUtils;
 import java.math.BigInteger;
 import java.util.Map;
@@ -158,7 +158,7 @@ public final class InterfaceUtils {
     @Nonnull
     public static SwInterfaceDetails getVppInterfaceDetails(@Nonnull final FutureJVpp futureJvpp,
                                                             @Nonnull InterfaceKey key, final int index,
-                                                            @Nonnull final Context ctx) {
+                                                            @Nonnull final ModificationCache ctx) {
         final SwInterfaceDump request = new SwInterfaceDump();
         request.nameFilter = key.getName().getBytes();
         request.nameFilterValid = 1;
@@ -225,7 +225,7 @@ public final class InterfaceUtils {
         return EthernetCsmacd.class;
     }
 
-    static boolean isInterfaceOfType(final Context ctx, final int index,
+    static boolean isInterfaceOfType(final ModificationCache ctx, final int index,
                                      final Class<? extends InterfaceType> ifcType) {
         final SwInterfaceDetails cachedDetails =
                 checkNotNull(getCachedInterfaceDump(ctx).get(index),
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/L2Customizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/L2Customizer.java
index 099d4c195..1bc9c2b3a 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/L2Customizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/L2Customizer.java
@@ -17,7 +17,7 @@
 package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
 
 import com.google.common.base.Preconditions;
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -74,20 +74,20 @@ public class L2Customizer extends FutureJVppCustomizer
 
     @Override
     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<L2> id, @Nonnull final L2Builder builder,
-                                      @Nonnull final Context ctx) throws ReadFailedException {
+                                      @Nonnull final ReadContext ctx) throws ReadFailedException {
         LOG.debug("Reading attributes for L2: {}", id);
         final InterfaceKey key = id.firstKeyOf(Interface.class);
-        final int ifaceId = interfaceContext.getIndex(key.getName());
+        final int ifaceId = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
 
         final SwInterfaceDetails iface = InterfaceUtils.getVppInterfaceDetails(getFutureJVpp(), key,
-                ifaceId, ctx);
+                ifaceId, ctx.getModificationCache());
         LOG.debug("Interface details for interface: {}, details: {}", key.getName(), iface);
 
         final Optional<BridgeDomainSwIfDetails> bdForInterface = getBridgeDomainForInterface(ifaceId);
         if (bdForInterface.isPresent()) {
             final BridgeDomainSwIfDetails bdSwIfDetails = bdForInterface.get();
             final BridgeBasedBuilder bbBuilder = new BridgeBasedBuilder();
-            bbBuilder.setBridgeDomain(bridgeDomainContext.getName(bdSwIfDetails.bdId));
+            bbBuilder.setBridgeDomain(bridgeDomainContext.getName(bdSwIfDetails.bdId, ctx.getMappingContext()));
             // bbBuilder.setBridgedVirtualInterface // TODO where to find that value?
             if (bdSwIfDetails.shg != 0) {
                 bbBuilder.setSplitHorizonGroup((short)bdSwIfDetails.shg);
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/SubInterfaceCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/SubInterfaceCustomizer.java
index b68acbfa3..ebd1cff40 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/SubInterfaceCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/SubInterfaceCustomizer.java
@@ -19,7 +19,7 @@ package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
 import static io.fd.honeycomb.v3po.translate.v3po.interfacesstate.InterfaceUtils.isInterfaceOfType;
 
 import com.google.common.base.Preconditions;
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -70,18 +70,18 @@ public class SubInterfaceCustomizer extends FutureJVppCustomizer
 
     @Override
     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<SubInterface> id,
-                                      @Nonnull final SubInterfaceBuilder builder, @Nonnull final Context ctx)
+                                      @Nonnull final SubInterfaceBuilder builder, @Nonnull final ReadContext ctx)
             throws ReadFailedException {
         final InterfaceKey key = id.firstKeyOf(Interface.class);
         // Relying here that parent InterfaceCustomizer was invoked first (PREORDER)
         // to fill in the context with initial ifc mapping
-        final int index = interfaceContext.getIndex(key.getName());
-        if (!isInterfaceOfType(ctx, index, org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.SubInterface.class)) {
+        final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
+        if (!isInterfaceOfType(ctx.getModificationCache(), index, org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.SubInterface.class)) {
             return;
         }
 
         LOG.debug("Reading attributes for sub interface: {}", id);
-        final SwInterfaceDetails iface = InterfaceUtils.getVppInterfaceDetails(getFutureJVpp(), key, index, ctx);
+        final SwInterfaceDetails iface = InterfaceUtils.getVppInterfaceDetails(getFutureJVpp(), key, index, ctx.getModificationCache());
         LOG.debug("VPP interface details: {}", ReflectionToStringBuilder.toString(iface));
 
         if (iface.subId == 0) {
@@ -90,7 +90,7 @@ public class SubInterfaceCustomizer extends FutureJVppCustomizer
         }
 
         builder.setIdentifier(Long.valueOf(iface.subId));
-        builder.setSuperInterface(interfaceContext.getName(iface.supSwIfIndex));
+        builder.setSuperInterface(interfaceContext.getName(iface.supSwIfIndex, ctx.getMappingContext()));
         builder.setNumberOfTags(Short.valueOf(iface.subNumberOfTags));
         builder.setVlanType(iface.subDot1Ad == 1 ? VlanType._802dot1q : VlanType._802dot1ad);
         if (iface.subExactMatch == 1) {
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/TapCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/TapCustomizer.java
index e7cd560bb..358e9149a 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/TapCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/TapCustomizer.java
@@ -18,7 +18,7 @@ package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
 
 import static io.fd.honeycomb.v3po.translate.v3po.interfacesstate.InterfaceUtils.isInterfaceOfType;
 
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -72,12 +72,12 @@ public class TapCustomizer extends FutureJVppCustomizer
     @Override
     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<Tap> id,
                                       @Nonnull final TapBuilder builder,
-                                      @Nonnull final Context ctx) throws ReadFailedException {
+                                      @Nonnull final ReadContext ctx) throws ReadFailedException {
         final InterfaceKey key = id.firstKeyOf(Interface.class);
         // Relying here that parent InterfaceCustomizer was invoked first (PREORDER)
         // to fill in the context with initial ifc mapping
-        final int index = interfaceContext.getIndex(key.getName());
-        if (!isInterfaceOfType(ctx, index, org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.Tap.class)) {
+        final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
+        if (!isInterfaceOfType(ctx.getModificationCache(), index, org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.Tap.class)) {
             return;
         }
 
@@ -85,7 +85,7 @@ public class TapCustomizer extends FutureJVppCustomizer
 
         @SuppressWarnings("unchecked")
         Map<Integer, SwInterfaceTapDetails> mappedTaps =
-            (Map<Integer, SwInterfaceTapDetails>) ctx.get(DUMPED_TAPS_CONTEXT_KEY);
+            (Map<Integer, SwInterfaceTapDetails>) ctx.getModificationCache().get(DUMPED_TAPS_CONTEXT_KEY);
 
         if(mappedTaps == null) {
             // Full Tap dump has to be performed here, no filter or anything is here to help so at least we cache it
@@ -104,7 +104,7 @@ public class TapCustomizer extends FutureJVppCustomizer
                     .collect(Collectors.toMap(t -> t.swIfIndex, swInterfaceDetails -> swInterfaceDetails));
             }
 
-            ctx.put(DUMPED_TAPS_CONTEXT_KEY, mappedTaps);
+            ctx.getModificationCache().put(DUMPED_TAPS_CONTEXT_KEY, mappedTaps);
         }
 
         final SwInterfaceTapDetails swInterfaceTapDetails = mappedTaps.get(index);
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VhostUserCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VhostUserCustomizer.java
index 70a6da1cc..d5ae8faf3 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VhostUserCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VhostUserCustomizer.java
@@ -18,7 +18,7 @@ package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
 
 import static io.fd.honeycomb.v3po.translate.v3po.interfacesstate.InterfaceUtils.isInterfaceOfType;
 
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -74,12 +74,12 @@ public class VhostUserCustomizer extends FutureJVppCustomizer
     @Override
     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<VhostUser> id,
                                       @Nonnull final VhostUserBuilder builder,
-                                      @Nonnull final Context ctx) throws ReadFailedException {
+                                      @Nonnull final ReadContext ctx) throws ReadFailedException {
         final InterfaceKey key = id.firstKeyOf(Interface.class);
         // Relying here that parent InterfaceCustomizer was invoked first (PREORDER)
         // to fill in the context with initial ifc mapping
-        final int index = interfaceContext.getIndex(key.getName());
-        if (!isInterfaceOfType(ctx, index, org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VhostUser.class)) {
+        final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
+        if (!isInterfaceOfType(ctx.getModificationCache(), index, org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VhostUser.class)) {
             return;
         }
 
@@ -87,7 +87,7 @@ public class VhostUserCustomizer extends FutureJVppCustomizer
 
         @SuppressWarnings("unchecked")
         Map<Integer, SwInterfaceVhostUserDetails> mappedVhostUsers =
-            (Map<Integer, SwInterfaceVhostUserDetails>) ctx.get(DUMPED_VHOST_USERS_CONTEXT_KEY);
+            (Map<Integer, SwInterfaceVhostUserDetails>) ctx.getModificationCache().get(DUMPED_VHOST_USERS_CONTEXT_KEY);
 
         if(mappedVhostUsers == null) {
             // Full VhostUser dump has to be performed here, no filter or anything is here to help so at least we cache it
@@ -106,7 +106,7 @@ public class VhostUserCustomizer extends FutureJVppCustomizer
                     .collect(Collectors.toMap(t -> t.swIfIndex, swInterfaceDetails -> swInterfaceDetails));
             }
 
-            ctx.put(DUMPED_VHOST_USERS_CONTEXT_KEY, mappedVhostUsers);
+            ctx.getModificationCache().put(DUMPED_VHOST_USERS_CONTEXT_KEY, mappedVhostUsers);
         }
 
         // Relying here that parent InterfaceCustomizer was invoked first to fill in the context with initial ifc mapping
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VlanTagRewriteCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VlanTagRewriteCustomizer.java
index d7404e6d5..d05e089a2 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VlanTagRewriteCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VlanTagRewriteCustomizer.java
@@ -17,7 +17,7 @@
 package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
 
 import com.google.common.base.Preconditions;
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -68,13 +68,13 @@ public class VlanTagRewriteCustomizer extends FutureJVppCustomizer
 
     @Override
     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<VlanTagRewrite> id,
-                                      @Nonnull final VlanTagRewriteBuilder builder, @Nonnull final Context ctx)
+                                      @Nonnull final VlanTagRewriteBuilder builder, @Nonnull final ReadContext ctx)
             throws ReadFailedException {
         LOG.debug("Reading attributes for sub interface: {}", id);
         final InterfaceKey key = id.firstKeyOf(Interface.class);
 
         final SwInterfaceDetails iface = InterfaceUtils.getVppInterfaceDetails(getFutureJVpp(), key,
-                interfaceContext.getIndex(key.getName()), ctx);
+                interfaceContext.getIndex(key.getName(), ctx.getMappingContext()), ctx.getModificationCache());
 
         builder.setFirstPushed(iface.subDot1Ad == 1 ? VlanType._802dot1q : VlanType._802dot1ad);
         builder.setRewriteOperation(TagRewriteOperation.forValue(iface.vtrOp));
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanCustomizer.java
index 829416034..81ba34062 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanCustomizer.java
@@ -18,7 +18,7 @@ package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
 
 import static com.google.common.base.Preconditions.checkState;
 
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -74,12 +74,12 @@ public class VxlanCustomizer extends FutureJVppCustomizer
     @Override
     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<Vxlan> id,
                                       @Nonnull final VxlanBuilder builder,
-                                      @Nonnull final Context ctx) throws ReadFailedException {
+                                      @Nonnull final ReadContext ctx) throws ReadFailedException {
         final InterfaceKey key = id.firstKeyOf(Interface.class);
         // Relying here that parent InterfaceCustomizer was invoked first (PREORDER)
         // to fill in the context with initial ifc mapping
-        final int index = interfaceContext.getIndex(key.getName());
-        if (!InterfaceUtils.isInterfaceOfType(ctx, index, VxlanTunnel.class)) {
+        final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
+        if (!InterfaceUtils.isInterfaceOfType(ctx.getModificationCache(), index, VxlanTunnel.class)) {
             return;
         }
 
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vpp/BridgeDomainCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vpp/BridgeDomainCustomizer.java
index 672a05f4e..6e94461a6 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vpp/BridgeDomainCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vpp/BridgeDomainCustomizer.java
@@ -96,11 +96,11 @@ public class BridgeDomainCustomizer
             // FIXME we need the bd index to be returned by VPP or we should have a counter field (maybe in context similar to artificial name)
             // Here we assign the next available ID from bdContext's perspective
             int index = 1;
-            while(bdContext.containsName(index)) {
+            while(bdContext.containsName(index, ctx.getMappingContext())) {
                 index++;
             }
             addOrUpdateBridgeDomain(index, dataBefore);
-            bdContext.addName(index, bdName);
+            bdContext.addName(index, bdName, ctx.getMappingContext());
         } catch (VppApiInvocationException e) {
             LOG.warn("Failed to create bridge domain", e);
             throw new WriteFailedException.CreateFailedException(id, dataBefore, e);
@@ -120,7 +120,7 @@ public class BridgeDomainCustomizer
         LOG.debug("deleteCurrentAttributes: id={}, dataBefore={}, ctx={}", id, dataBefore, ctx);
 
         final String bdName = id.firstKeyOf(BridgeDomain.class).getName();
-        int bdId = bdContext.getIndex(bdName);
+        int bdId = bdContext.getIndex(bdName, ctx.getMappingContext());
         final BridgeDomainAddDel request = new BridgeDomainAddDel();
         request.bdId = bdId;
 
@@ -154,7 +154,7 @@ public class BridgeDomainCustomizer
                 "BridgeDomain name changed. It should be deleted and then created.");
 
         try {
-            addOrUpdateBridgeDomain(bdContext.getIndex(bdName), dataAfter);
+            addOrUpdateBridgeDomain(bdContext.getIndex(bdName, ctx.getMappingContext()), dataAfter);
         } catch (VppApiInvocationException e) {
             LOG.warn("Failed to create bridge domain", e);
             throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter, e);
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/BridgeDomainCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/BridgeDomainCustomizer.java
index 1a3855ced..ac16c610f 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/BridgeDomainCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/BridgeDomainCustomizer.java
@@ -20,7 +20,7 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.common.primitives.Longs;
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ListReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -70,7 +70,7 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
 
     @Override
     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<BridgeDomain> id,
-                                      @Nonnull final BridgeDomainBuilder builder, @Nonnull final Context context)
+                                      @Nonnull final BridgeDomainBuilder builder, @Nonnull final ReadContext context)
             throws ReadFailedException {
         LOG.debug("vppstate.BridgeDomainCustomizer.readCurrentAttributes: id={}, builderbuilder={}, context={}",
                 id, builder, context);
@@ -78,13 +78,13 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
         final BridgeDomainKey key = id.firstKeyOf(id.getTargetType());
         LOG.debug("vppstate.BridgeDomainCustomizer.readCurrentAttributes: key={}", key);
 
-        final int bdId = bdContext.getIndex(key.getName());
+        final int bdId = bdContext.getIndex(key.getName(), context.getMappingContext());
         LOG.debug("vppstate.BridgeDomainCustomizer.readCurrentAttributes: bdId={}", bdId);
 
         BridgeDomainDetailsReplyDump reply;
         BridgeDomainDetails bridgeDomainDetails;
         final BridgeDomainDump request = new BridgeDomainDump();
-        request.bdId = bdContext.getIndex(key.getName());
+        request.bdId = bdContext.getIndex(key.getName(), context.getMappingContext());
         try {
             reply = getFutureJVpp().bridgeDomainDump(request).toCompletableFuture().get();
             bridgeDomainDetails = Iterables.getOnlyElement(reply.bridgeDomainDetails);
@@ -102,7 +102,7 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
         builder.setLearn(byteToBoolean(bridgeDomainDetails.learn));
         builder.setUnknownUnicastFlood(byteToBoolean(bridgeDomainDetails.uuFlood));
 
-        builder.setInterface(getIfcs(bridgeDomainDetails, reply.bridgeDomainSwIfDetails));
+        builder.setInterface(getIfcs(bridgeDomainDetails, reply.bridgeDomainSwIfDetails, context));
 
         final L2FibTableDump l2FibRequest = new L2FibTableDump();
         l2FibRequest.bdId = bdId;
@@ -124,7 +124,7 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
                             ? L2Fib.Action.Filter
                             : L2Fib.Action.Forward))
                         .setBridgedVirtualInterface(byteToBoolean(entry.bviMac))
-                        .setOutgoingInterface(interfaceContext.getName(entry.swIfIndex))
+                        .setOutgoingInterface(interfaceContext.getName(entry.swIfIndex, context.getMappingContext()))
                         .setStaticConfig(byteToBoolean(entry.staticMac))
                         .setPhysAddress(address)
                         .setKey(new L2FibKey(address))
@@ -175,10 +175,11 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
     }
 
     private List<Interface> getIfcs(final BridgeDomainDetails bridgeDomainDetails,
-                                    final List<BridgeDomainSwIfDetails> bridgeDomainSwIfDetails) {
+                                    final List<BridgeDomainSwIfDetails> bridgeDomainSwIfDetails,
+                                    final ReadContext context) {
         final List<Interface> ifcs = new ArrayList<>(bridgeDomainSwIfDetails.size());
         for (BridgeDomainSwIfDetails anInterface : bridgeDomainSwIfDetails) {
-            final String interfaceName = interfaceContext.getName(anInterface.swIfIndex);
+            final String interfaceName = interfaceContext.getName(anInterface.swIfIndex, context.getMappingContext());
             if (anInterface.bdId == bridgeDomainDetails.bdId) {
                 ifcs.add(new InterfaceBuilder()
                         .setBridgedVirtualInterface(bridgeDomainDetails.bviSwIfIndex == anInterface.swIfIndex)
@@ -202,7 +203,7 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
     @Nonnull
     @Override
     public List<BridgeDomainKey> getAllIds(@Nonnull final InstanceIdentifier<BridgeDomain> id,
-                                           @Nonnull final Context context) {
+                                           @Nonnull final ReadContext context) {
         final BridgeDomainDump request = new BridgeDomainDump();
         request.bdId = -1; // dump call
 
@@ -228,7 +229,7 @@ public final class BridgeDomainCustomizer extends FutureJVppCustomizer
         for (BridgeDomainDetails detail : reply.bridgeDomainDetails) {
             logBridgeDomainDetails(detail);
 
-            final String bName = bdContext.getName(detail.bdId);
+            final String bName = bdContext.getName(detail.bdId, context.getMappingContext());
             LOG.debug("vppstate.BridgeDomainCustomizer.getAllIds: bName={}", bName);
             allIds.add(new BridgeDomainKey(bName));
         }
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/VersionCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/VersionCustomizer.java
index 1db8217f9..4ad4a6e91 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/VersionCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/vppstate/VersionCustomizer.java
@@ -16,7 +16,7 @@
 
 package io.fd.honeycomb.v3po.translate.v3po.vppstate;
 
-import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
@@ -53,7 +53,7 @@ public final class VersionCustomizer
 
     @Override
     public void readCurrentAttributes(@Nonnull InstanceIdentifier<Version> id, @Nonnull final VersionBuilder builder,
-                                      @Nonnull final Context context) throws ReadFailedException {
+                                      @Nonnull final ReadContext context) throws ReadFailedException {
 
         ShowVersionReply reply;
         try {