HONEYCOMB-431: add validation support to Writers

This patch introduces FlatWriterRegistry.validateModifications.
Implementation iterates over writersOrder following bulkUpdate logic
to properly support subtree writers case.

Writers are now cabable of validating modifications.
Commonly used implementations (GenericWriter and GenericListWriter)
delegate validation capbility to Validators.

Change-Id: If7a0bb0838c0b8f2c0393c989f3b03853a2ea679
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>

1 files changed, 16 insertions, 5 deletions

diff --git a/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericListWriter.java b/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericListWriter.java
index 92467a8e8..5121eb793 100644
--- a/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericListWriter.java
+++ b/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericListWriter.java
@@ -19,12 +19,13 @@ package io.fd.honeycomb.translate.impl.write;
 import static io.fd.honeycomb.translate.impl.write.GenericWriter.isUpdateSupported;
 
 import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
+import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
 import io.fd.honeycomb.translate.util.RWUtils;
 import io.fd.honeycomb.translate.util.write.AbstractGenericWriter;
 import io.fd.honeycomb.translate.write.ListWriter;
+import io.fd.honeycomb.translate.write.Validator;
 import io.fd.honeycomb.translate.write.WriteContext;
 import io.fd.honeycomb.translate.write.WriteFailedException;
-import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
 import javax.annotation.Nonnull;
 import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.Identifiable;
@@ -45,6 +46,13 @@ public final class GenericListWriter<D extends DataObject & Identifiable<K>, K e
         this.customizer = customizer;
     }
 
+    public GenericListWriter(@Nonnull final InstanceIdentifier<D> type,
+                             @Nonnull final ListWriterCustomizer<D, K> customizer,
+                             @Nonnull final Validator<D> validator) {
+        super(type, isUpdateSupported(customizer), validator);
+        this.customizer = customizer;
+    }
+
     @Override
     protected void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D data,
                                           @Nonnull final WriteContext ctx) throws WriteFailedException {
@@ -79,22 +87,25 @@ public final class GenericListWriter<D extends DataObject & Identifiable<K>, K e
     @Override
     protected void writeCurrent(final InstanceIdentifier<D> id, final D data, final WriteContext ctx)
         throws WriteFailedException {
-        super.writeCurrent(getId(id, data), data, ctx);
+        super.writeCurrent(getManagedId(id, data), data, ctx);
     }
 
     @Override
     protected void updateCurrent(final InstanceIdentifier<D> id, final D dataBefore, final D dataAfter,
                                  final WriteContext ctx) throws WriteFailedException {
-        super.updateCurrent(getId(id, dataBefore), dataBefore, dataAfter, ctx);
+        super.updateCurrent(getManagedId(id, dataBefore), dataBefore, dataAfter, ctx);
     }
 
     @Override
     protected void deleteCurrent(final InstanceIdentifier<D> id, final D dataBefore, final WriteContext ctx)
         throws WriteFailedException {
-        super.deleteCurrent(getId(id, dataBefore), dataBefore, ctx);
+        super.deleteCurrent(getManagedId(id, dataBefore), dataBefore, ctx);
     }
 
-    private InstanceIdentifier<D> getId(final InstanceIdentifier<D> id, final D current) {
+    @Override
+    protected InstanceIdentifier<D> getManagedId(@Nonnull final InstanceIdentifier<? extends DataObject> currentId,
+                                                 @Nonnull final D current) {
+        final InstanceIdentifier<D> id = (InstanceIdentifier<D>) currentId;
         // Make sure the key is present
         if (isWildcarded(id)) {
             return getSpecificId(id, current);