Honeycomb-73 Extensible initializers for lisp

Change-Id: I30b0f472a8ba79b74c92c1b8283d23e860ec78af
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

3 files changed, 30 insertions, 78 deletions

diff --git a/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/LispModule.java b/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/LispModule.java
index 2317b49f7..bd345904f 100644
--- a/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/LispModule.java
+++ b/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/LispModule.java
@@ -26,11 +26,9 @@ import com.google.inject.AbstractModule;
 import com.google.inject.Singleton;
 import com.google.inject.multibindings.Multibinder;
 import com.google.inject.name.Names;
-import io.fd.honeycomb.data.init.DataTreeInitializer;
 import io.fd.honeycomb.lisp.cfgattrs.LispConfiguration;
 import io.fd.honeycomb.lisp.context.util.ContextsReaderFactoryProvider;
 import io.fd.honeycomb.lisp.context.util.EidMappingContext;
-import io.fd.honeycomb.lisp.translate.initializers.LispInitializer;
 import io.fd.honeycomb.lisp.translate.read.factory.LispStateReaderFactory;
 import io.fd.honeycomb.lisp.translate.write.factory.LispWriterFactory;
 import io.fd.honeycomb.translate.read.ReaderFactory;
@@ -75,12 +73,6 @@ public class LispModule extends AbstractModule {
         writerFactoryBinder.addBinding().to(LispWriterFactory.class);
         LOG.info("Writer factories binded");
 
-        LOG.info("Binding initializers");
-        final Multibinder<DataTreeInitializer> initializerBinder =
-                Multibinder.newSetBinder(binder(), DataTreeInitializer.class);
-        initializerBinder.addBinding().to(LispInitializer.class);
-        LOG.info("Initializers binded");
-
         final Multibinder<ReaderFactory> readerBinder = Multibinder.newSetBinder(binder(), ReaderFactory.class);
         readerBinder.addBinding().toProvider(ContextsReaderFactoryProvider.class).in(Singleton.class);
 
diff --git a/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/translate/initializers/LispInitializer.java b/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/translate/initializers/LispInitializer.java
deleted file mode 100755
index 2715bc1dd..000000000
--- a/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/translate/initializers/LispInitializer.java
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * 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 io.fd.honeycomb.lisp.translate.initializers;
-
-
-import static io.fd.honeycomb.lisp.cfgattrs.LispConfiguration.HONEYCOMB_INITIALIZER;
-
-import com.google.inject.Inject;
-import com.google.inject.name.Named;
-import io.fd.honeycomb.data.init.AbstractDataTreeConverter;
-import org.opendaylight.controller.md.sal.binding.api.DataBroker;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.Lisp;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.LispBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.LispState;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Initializes vpp node in config data tree based on operational state
- */
-public class LispInitializer extends AbstractDataTreeConverter<LispState, Lisp> {
-
-    private static final Logger LOG = LoggerFactory.getLogger(LispInitializer.class);
-
-    @Inject
-    public LispInitializer(@Named(HONEYCOMB_INITIALIZER) final DataBroker bindingDataBroker) {
-        super(bindingDataBroker, InstanceIdentifier.create(LispState.class), InstanceIdentifier.create(Lisp.class));
-    }
-
-    @Override
-    protected Lisp convert(final LispState operationalData) {
-        LOG.debug("LispInitializer started");
-        final LispBuilder lispBuilder = new LispBuilder();
-
-        // set everything from LispState to LispBuilder
-        // this is necessary in cases, when HC connects to a running VPP with some LISP configuration. HC needs to
-        // reconstruct configuration based on what's present in VPP in order to support subsequent configuration changes
-        // without any issues
-
-        // the other reason this should work is HC persistence, so that HC after restart only performs diff (only push
-        // configuration that is not currently in VPP, but is persisted. If they are equal skip any VPP calls)
-        // updates to VPP. If this is not fully implemented (depending on VPP implementation, restoration of persisted
-        // configuration can fail)
-
-        return lispBuilder.setEnable(operationalData.isEnable())
-                .setLispFeatureData(operationalData.getLispFeatureData())
-                .build();
-    }
-}
diff --git a/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/translate/read/LispStateCustomizer.java b/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/translate/read/LispStateCustomizer.java
index 50c9461a9..77374f9ad 100755
--- a/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/translate/read/LispStateCustomizer.java
+++ b/lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/translate/read/LispStateCustomizer.java
@@ -19,21 +19,24 @@ package io.fd.honeycomb.lisp.translate.read;
 
 import io.fd.honeycomb.translate.read.ReadContext;
 import io.fd.honeycomb.translate.read.ReadFailedException;
-import io.fd.honeycomb.translate.spi.read.ReaderCustomizer;
+import io.fd.honeycomb.translate.spi.read.Initialized;
+import io.fd.honeycomb.translate.spi.read.InitializingReaderCustomizer;
 import io.fd.honeycomb.translate.vpp.util.ByteDataTranslator;
 import io.fd.honeycomb.translate.vpp.util.FutureJVppCustomizer;
 import io.fd.honeycomb.translate.vpp.util.JvppReplyConsumer;
+import io.fd.vpp.jvpp.VppBaseCallException;
+import io.fd.vpp.jvpp.core.dto.ShowLispStatus;
+import io.fd.vpp.jvpp.core.dto.ShowLispStatusReply;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
 import java.util.concurrent.TimeoutException;
 import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.Lisp;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.LispBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.LispState;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.LispStateBuilder;
 import org.opendaylight.yangtools.concepts.Builder;
 import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import io.fd.vpp.jvpp.VppBaseCallException;
-import io.fd.vpp.jvpp.core.dto.ShowLispStatus;
-import io.fd.vpp.jvpp.core.dto.ShowLispStatusReply;
-import io.fd.vpp.jvpp.core.future.FutureJVppCore;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -42,7 +45,7 @@ import org.slf4j.LoggerFactory;
  * Customizer that handles reads of {@code LispState}
  */
 public class LispStateCustomizer extends FutureJVppCustomizer
-        implements ReaderCustomizer<LispState, LispStateBuilder>, JvppReplyConsumer, ByteDataTranslator {
+        implements InitializingReaderCustomizer<LispState, LispStateBuilder>, JvppReplyConsumer, ByteDataTranslator {
 
     private static final Logger LOG = LoggerFactory.getLogger(LispStateCustomizer.class);
 
@@ -73,4 +76,25 @@ public class LispStateCustomizer extends FutureJVppCustomizer
     public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final LispState readValue) {
         LOG.warn("Merge is unsupported for data roots");
     }
+
+    @Override
+    public Initialized<Lisp> init(
+            @Nonnull final InstanceIdentifier<LispState> id, @Nonnull final LispState readValue,
+            @Nonnull final ReadContext ctx) {
+        return Initialized.create(InstanceIdentifier.create(Lisp.class),
+
+                // set everything from LispState to LispBuilder
+                // this is necessary in cases, when HC connects to a running VPP with some LISP configuration. HC needs to
+                // reconstruct configuration based on what's present in VPP in order to support subsequent configuration changes
+                // without any issues
+
+                // the other reason this should work is HC persistence, so that HC after restart only performs diff (only push
+                // configuration that is not currently in VPP, but is persisted. If they are equal skip any VPP calls)
+                // updates to VPP. If this is not fully implemented (depending on VPP implementation, restoration of persisted
+                // configuration can fail)
+                new LispBuilder()
+                        .setEnable(readValue.isEnable())
+                        .setLispFeatureData(readValue.getLispFeatureData())
+                        .build());
+    }
 }