Honeycomb-73 Extensible initializers for samples

Change-Id: I08f53a301cc147ce1e8cce8b3bd5c82e8f4b21fd
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

4 files changed, 21 insertions, 76 deletions

diff --git a/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/SampleInterfaceModule.java b/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/SampleInterfaceModule.java
index 000113f11..ea8a72724 100644
--- a/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/SampleInterfaceModule.java
+++ b/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/SampleInterfaceModule.java
@@ -19,13 +19,11 @@ package io.fd.honeycomb.samples.interfaces.mapping;
 import com.google.inject.AbstractModule;
 import com.google.inject.Singleton;
 import com.google.inject.multibindings.Multibinder;
-import io.fd.honeycomb.data.init.DataTreeInitializer;
 import io.fd.honeycomb.notification.ManagedNotificationProducer;
-import io.fd.honeycomb.samples.interfaces.mapping.config.InterfacesWriterFactory;
-import io.fd.honeycomb.samples.interfaces.mapping.oper.InterfacesReaderFactory;
 import io.fd.honeycomb.samples.interfaces.mapping.cfgattrs.InterfacesPluginConfiguration;
-import io.fd.honeycomb.samples.interfaces.mapping.init.InterfacesInitializer;
+import io.fd.honeycomb.samples.interfaces.mapping.config.InterfacesWriterFactory;
 import io.fd.honeycomb.samples.interfaces.mapping.notification.InterfaceUpNotificationProducer;
+import io.fd.honeycomb.samples.interfaces.mapping.oper.InterfacesReaderFactory;
 import io.fd.honeycomb.translate.read.ReaderFactory;
 import io.fd.honeycomb.translate.write.WriterFactory;
 import net.jmob.guice.conf.core.ConfigurationModule;
@@ -47,7 +45,6 @@ public final class SampleInterfaceModule extends AbstractModule {
         // Below are classes picked up by HC framework
         Multibinder.newSetBinder(binder(), WriterFactory.class).addBinding().to(InterfacesWriterFactory.class);
         Multibinder.newSetBinder(binder(), ReaderFactory.class).addBinding().to(InterfacesReaderFactory.class);
-        Multibinder.newSetBinder(binder(), DataTreeInitializer.class).addBinding().to(InterfacesInitializer.class);
         Multibinder.newSetBinder(binder(), ManagedNotificationProducer.class).addBinding()
                 .to(InterfaceUpNotificationProducer.class);
     }
diff --git a/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/init/InterfacesInitializer.java b/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/init/InterfacesInitializer.java
deleted file mode 100644
index 9aea508c7..000000000
--- a/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/init/InterfacesInitializer.java
+++ /dev/null
@@ -1,68 +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.samples.interfaces.mapping.init;
-
-import com.google.inject.Inject;
-import com.google.inject.name.Named;
-import io.fd.honeycomb.data.init.AbstractDataTreeConverter;
-import java.util.stream.Collectors;
-import org.opendaylight.controller.md.sal.binding.api.DataBroker;
-import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.Interfaces;
-import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.InterfacesBuilder;
-import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.InterfacesState;
-import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.interfaces.InterfaceBuilder;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * This is an initializer for interfaces plugin. Its main goal is to revers-engineer configuration data (config "true")
- * for interfaces model from operational data. In this case, we are trying to recreate Interfaces container from InterfacesState
- * container. Thanks to symmetrical nature of the model, it's pretty straightforward.
- *
- * This is very useful when the lower layer already contains some data that should be revers-engineer to config data
- * in honeycomb in order to get HC and lower layer to sync... It makes life of upper layers much easier
- *
- * However it's not always possible to perform this task so the initializers are optional for plugins
- */
-public class InterfacesInitializer extends AbstractDataTreeConverter<InterfacesState, Interfaces> {
-
-    private static final Logger LOG = LoggerFactory.getLogger(InterfacesInitializer.class);
-
-    @Inject
-    public InterfacesInitializer(@Named("honeycomb-initializer") final DataBroker bindingDataBroker) {
-        super(bindingDataBroker,
-                InstanceIdentifier.create(InterfacesState.class), InstanceIdentifier.create(Interfaces.class));
-    }
-
-    @Override
-    protected Interfaces convert(final InterfacesState operationalData) {
-        // Just convert operational data into config data
-        // The operational data are queried from lower layer using readerCustomizers from this plugin
-
-        LOG.info("Initializing interfaces config data from: {}", operationalData);
-
-        return new InterfacesBuilder()
-                .setInterface(operationalData.getInterface().stream()
-                        .map(oper -> new InterfaceBuilder()
-                                .setMtu(oper.getMtu())
-                                .setInterfaceId(oper.getInterfaceId())
-                                .build())
-                        .collect(Collectors.toList()))
-                .build();
-    }
-}
diff --git a/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/oper/CountersReaderCustomizer.java b/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/oper/CountersReaderCustomizer.java
index b5ec2cbd9..71476baa3 100644
--- a/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/oper/CountersReaderCustomizer.java
+++ b/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/oper/CountersReaderCustomizer.java
@@ -44,7 +44,6 @@ public class CountersReaderCustomizer implements ReaderCustomizer<Counters, Coun
         this.access = access;
     }
 
-
     @Nonnull
     @Override
     public CountersBuilder getBuilder(@Nonnull final InstanceIdentifier<Counters> id) {
diff --git a/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/oper/InterfaceReaderCustomizer.java b/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/oper/InterfaceReaderCustomizer.java
index 7b69005e0..850c1396b 100644
--- a/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/oper/InterfaceReaderCustomizer.java
+++ b/samples/interfaces/mapping/src/main/java/io/fd/honeycomb/samples/interfaces/mapping/oper/InterfaceReaderCustomizer.java
@@ -19,11 +19,13 @@ package io.fd.honeycomb.samples.interfaces.mapping.oper;
 import io.fd.honeycomb.samples.interfaces.mapping.LowerLayerAccess;
 import io.fd.honeycomb.translate.read.ReadContext;
 import io.fd.honeycomb.translate.read.ReadFailedException;
-import io.fd.honeycomb.translate.spi.read.ListReaderCustomizer;
+import io.fd.honeycomb.translate.spi.read.Initialized;
+import io.fd.honeycomb.translate.spi.read.InitializingListReaderCustomizer;
 import java.util.List;
 import java.util.stream.Collectors;
 import javax.annotation.Nonnull;
 import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.InterfaceId;
+import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.Interfaces;
 import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.InterfacesStateBuilder;
 import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.interfaces.state.Interface;
 import org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.interfaces.state.InterfaceBuilder;
@@ -37,7 +39,8 @@ import org.slf4j.LoggerFactory;
 /**
  * This is a customizer responsible for reading Interface operational data
  */
-public class InterfaceReaderCustomizer implements ListReaderCustomizer<Interface, InterfaceKey, InterfaceBuilder> {
+public class InterfaceReaderCustomizer implements
+        InitializingListReaderCustomizer<Interface, InterfaceKey, InterfaceBuilder> {
 
     private static final Logger LOG = LoggerFactory.getLogger(InterfaceReaderCustomizer.class);
     private final LowerLayerAccess access;
@@ -100,4 +103,18 @@ public class InterfaceReaderCustomizer implements ListReaderCustomizer<Interface
         // However its a good practice to provide a dedicated reader+customizer for every complex node
     }
 
+    @Override
+    public Initialized<org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.interfaces.Interface> init(
+            @Nonnull final InstanceIdentifier<Interface> id,
+            @Nonnull final Interface readValue,
+            @Nonnull final ReadContext ctx) {
+        return Initialized.create(InstanceIdentifier.create(Interfaces.class)
+                        .child(org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.interfaces.Interface.class,
+                                new org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.interfaces.InterfaceKey(
+                                        id.firstKeyOf(Interface.class).getInterfaceId())),
+                new org.opendaylight.yang.gen.v1.io.fd.honeycomb.samples.interfaces.rev160810.interfaces.InterfaceBuilder()
+                        .setMtu(readValue.getMtu())
+                        .setInterfaceId(readValue.getInterfaceId())
+                        .build());
+    }
 }