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>
import io.fd.honeycomb.translate.ValidationFailedException;
import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
/**
public InstanceIdentifier<?> getFailedId() {
return failedId;
}
+
+ /**
+ * Create specific validated failed exception.
+ */
+ public static class CreateValidationFailedException extends DataValidationFailedException {
+ private static final long serialVersionUID = 1;
+
+ private final transient DataObject data;
+
+ public CreateValidationFailedException(@Nonnull final InstanceIdentifier<?> failedId,
+ @Nonnull final DataObject data,
+ @Nonnull final Throwable cause) {
+ super(failedId, getMsg(failedId, data), cause);
+ this.data = checkNotNull(data, "data");
+ }
+
+ private static String getMsg(final @Nonnull InstanceIdentifier<?> failedId,
+ final @Nonnull DataObject data) {
+ return String.format("Failed to validate create request for: %s at: %s.", data, failedId);
+ }
+
+ public DataObject getData() {
+ return data;
+ }
+ }
+
+ /**
+ * Update specific validated failed exception.
+ */
+ public static class UpdateValidationFailedException extends DataValidationFailedException {
+ private static final long serialVersionUID = 1;
+
+ private final transient DataObject dataBefore;
+ private final transient DataObject dataAfter;
+
+ public UpdateValidationFailedException(@Nonnull final InstanceIdentifier<?> failedId,
+ @Nonnull final DataObject dataBefore,
+ @Nonnull final DataObject dataAfter,
+ @Nonnull final Throwable cause) {
+ super(failedId, getMsg(failedId, dataBefore, dataAfter), cause);
+ this.dataBefore = checkNotNull(dataBefore, "dataBefore");
+ this.dataAfter = checkNotNull(dataAfter, "dataAfter");
+ }
+
+ private static String getMsg(final @Nonnull InstanceIdentifier<?> failedId, final DataObject dataBefore,
+ final @Nonnull DataObject dataAfter) {
+ return String
+ .format("Failed to validate update request from: %s to: %s, at: %s.", dataBefore, dataAfter, failedId);
+ }
+
+ public DataObject getDataBefore() {
+ return dataBefore;
+ }
+
+ public DataObject getDataAfter() {
+ return dataAfter;
+ }
+ }
+
+ /**
+ * Delete specific validated failed exception.
+ */
+ public static class DeleteValidationFailedException extends DataValidationFailedException {
+ private static final long serialVersionUID = 1;
+
+ public DeleteValidationFailedException(@Nonnull final InstanceIdentifier<?> failedId, @Nonnull final Throwable cause) {
+ super(failedId, getMsg(failedId), cause);
+ }
+
+ private static String getMsg(@Nonnull final InstanceIdentifier<?> failedId) {
+ return String.format("Failed to validate delete request: %s.", failedId);
+ }
+ }
}
--- /dev/null
+/*
+ * Copyright (c) 2018 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.translate.write;
+
+import com.google.common.annotations.Beta;
+import io.fd.honeycomb.translate.write.DataValidationFailedException.CreateValidationFailedException;
+import io.fd.honeycomb.translate.write.DataValidationFailedException.DeleteValidationFailedException;
+import io.fd.honeycomb.translate.write.DataValidationFailedException.UpdateValidationFailedException;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Responsible for validation of DataObjects.
+ * Handles all update operations (create, update, delete).
+ *
+ * @param <D> Specific DataObject derived type, that is handled by this writer
+ * @see Writer#validate(InstanceIdentifier, DataObject, DataObject, WriteContext)
+ */
+@Beta
+public interface Validator<D extends DataObject> {
+ /**
+ * Validates write operation.
+ *
+ * @param id Identifier(from root) of data being written
+ * @param dataAfter New data to be written
+ * @param writeContext Write context that provides information about current state of DataTree.
+ * @throws CreateValidationFailedException if write validation failed
+ */
+ void validateWrite(
+ @Nonnull final InstanceIdentifier<D> id,
+ @Nonnull final D dataAfter,
+ @Nonnull final WriteContext writeContext) throws CreateValidationFailedException;
+
+ /**
+ * Validates update operation.
+ *
+ * @param id Identifier(from root) of data being updated
+ * @param dataBefore Old data
+ * @param dataAfter New, updated data
+ * @param writeContext Write context that provides information about current state of DataTree.
+ * @throws UpdateValidationFailedException if update validation failed
+ */
+ void validateUpdate(InstanceIdentifier<D> id, D dataBefore, D dataAfter, WriteContext writeContext)
+ throws UpdateValidationFailedException;
+
+ /**
+ * Validates delete operation.
+ *
+ * @param id Identifier(from root) of data being written
+ * @param dataBefore Old data being deleted
+ * @param writeContext Write context that provides information about current state of DataTree.
+ * @throws DeleteValidationFailedException if delete validation failed
+ */
+ void validateDelete(InstanceIdentifier<D> id, D dataBefore, WriteContext writeContext)
+ throws DeleteValidationFailedException;
+}
@Beta
public interface Writer<D extends DataObject> extends SubtreeManager<D> {
+ /**
+ * Validates data modification.
+ *
+ * @param id Identifier of data being validated
+ * @param dataBefore Old data
+ * @param dataAfter New, updated data
+ * @param ctx Write context enabling writer to get information about candidate data as well as current data
+ */
+ default void validate(@Nonnull final InstanceIdentifier<? extends DataObject> id,
+ @Nullable final DataObject dataBefore,
+ @Nullable final DataObject dataAfter,
+ @Nonnull final WriteContext ctx) throws DataValidationFailedException {
+ }
+
/**
* Process modifications and translate them as create/update/delete operations to lower level
*
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;
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 {
@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);
package io.fd.honeycomb.translate.impl.write;
-import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
import io.fd.honeycomb.translate.util.write.AbstractGenericWriter;
+import io.fd.honeycomb.translate.write.Validator;
+import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import javax.annotation.Nonnull;
import org.opendaylight.yangtools.yang.binding.DataObject;
@Nonnull final WriterCustomizer<D> customizer) {
super(type, isUpdateSupported(customizer));
this.customizer = customizer;
+ }
+ public GenericWriter(@Nonnull final InstanceIdentifier<D> type,
+ @Nonnull final WriterCustomizer<D> customizer,
+ @Nonnull final Validator<D> validator) {
+ super(type, isUpdateSupported(customizer), validator);
+ this.customizer = customizer;
}
static boolean isUpdateSupported(final @Nonnull WriterCustomizer<?> customizer) {
import io.fd.honeycomb.translate.TranslationException;
import io.fd.honeycomb.translate.util.RWUtils;
import io.fd.honeycomb.translate.write.DataObjectUpdate;
+import io.fd.honeycomb.translate.write.DataValidationFailedException;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.Writer;
import io.fd.honeycomb.translate.write.registry.UpdateFailedException;
import io.fd.honeycomb.translate.write.registry.WriterRegistry;
import java.util.ArrayList;
import java.util.Collection;
+import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
this.writers = writersById.entrySet().stream().map(Map.Entry::getValue).collect(Collectors.toSet());
}
+ @Override
+ public void validateModifications(@Nonnull final DataObjectUpdates updates, @Nonnull final WriteContext ctx)
+ throws DataValidationFailedException {
+ // Optimization: validation order is not relevant, so do not merge deletes and updates.
+ validateModifications(updates.getDeletes(), ctx);
+ validateModifications(updates.getUpdates(), ctx);
+ }
+
+ private void validateModifications(
+ @Nonnull final Multimap<InstanceIdentifier<?>, ? extends DataObjectUpdate> updates,
+ @Nonnull final WriteContext ctx) throws DataValidationFailedException {
+ if (updates.isEmpty()) {
+ return;
+ }
+ // Fail early if some handlers are missing.
+ checkAllTypesCanBeHandled(updates);
+
+ // Validators do not modify anything, so order of validators is not important.
+ // We iterate over writersOrder instead of modifications for consistent handling of subtree writers case.
+ for (InstanceIdentifier<?> writerType : writersOrder) {
+ final Writer<?> writer = getWriter(writerType);
+ for (DataObjectUpdate singleUpdate : getWritersData(updates, writer, writerType, ctx)) {
+ writer.validate(singleUpdate.getId(), singleUpdate.getDataBefore(), singleUpdate.getDataAfter(), ctx);
+ }
+ }
+ }
+
@Override
public void processModifications(@Nonnull final DataObjectUpdates updates,
@Nonnull final WriteContext ctx) throws TranslationException {
LOG.debug("Performing bulk update for: {}", updates.keySet());
// Iterate over all writers and call update if there are any related updates
for (InstanceIdentifier<?> writerType : writersOrder) {
- Collection<? extends DataObjectUpdate> writersData = updates.get(writerType);
final Writer<?> writer = getWriter(writerType);
-
- if (writersData.isEmpty()) {
- // If there are no data for current writer, but it is a SubtreeWriter and there are updates to
- // its children, still invoke it with its root data
- if (writer instanceof SubtreeWriter<?> && isAffected((SubtreeWriter<?>) writer, updates)) {
- // Provide parent data for SubtreeWriter for further processing
- writersData = getParentDataObjectUpdate(ctx, updates, writer);
- } else {
- // Skipping unaffected writer
- // Alternative to this would be modification sort according to the order of writers
- continue;
- }
- }
-
LOG.debug("Performing update for: {}", writerType);
LOG.trace("Performing update with writer: {}", writer);
- for (DataObjectUpdate singleUpdate : writersData) {
+ for (DataObjectUpdate singleUpdate : getWritersData(updates, writer, writerType, ctx)) {
try {
writer.processModification(singleUpdate.getId(), singleUpdate.getDataBefore(),
singleUpdate.getDataAfter(), ctx);
}
}
+ private Collection<? extends DataObjectUpdate> getWritersData(
+ final Multimap<InstanceIdentifier<?>, ? extends DataObjectUpdate> updates, final Writer<?> writer,
+ final InstanceIdentifier<?> writerType, final WriteContext ctx) {
+ Collection<? extends DataObjectUpdate> writersData = updates.get(writerType);
+
+ if (writersData.isEmpty()) {
+ // If there are no data for current writer, but it is a SubtreeWriter and there are updates to
+ // its children, still invoke it with its root data.
+ // Notice that child updates will be ignored if the set of all modifications
+ // contain both parent update and child updates. But this is ok, since all changes are already expressed in
+ // the parent update.
+ if (writer instanceof SubtreeWriter<?> && isAffected((SubtreeWriter<?>) writer, updates)) {
+ // Provide parent data for SubtreeWriter for further processing
+ writersData = getParentDataObjectUpdate(ctx, updates, writer);
+ } else {
+ // Skipping unaffected writer
+ // Alternative to this would be modification sort according to the order of writers
+ return Collections.emptyList();
+ }
+ }
+ return writersData;
+ }
+
private void checkAllTypesCanBeHandled(
@Nonnull final Multimap<InstanceIdentifier<?>, ? extends DataObjectUpdate> updates) {
import static com.google.common.base.Preconditions.checkArgument;
import com.google.common.collect.Iterables;
+import io.fd.honeycomb.translate.write.DataValidationFailedException;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import io.fd.honeycomb.translate.write.Writer;
return handledChildTypes;
}
+ @Override
+ public void validate(@Nonnull final InstanceIdentifier<? extends DataObject> id,
+ @Nullable final DataObject dataBefore, @Nullable final DataObject dataAfter,
+ @Nonnull final WriteContext ctx) throws DataValidationFailedException {
+ delegate.validate(id, dataBefore, dataAfter, ctx);
+ }
+
@Override
public void processModification(
@Nonnull final InstanceIdentifier<? extends DataObject> id,
import static org.mockito.Mockito.when;
import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
+import io.fd.honeycomb.translate.write.Validator;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import java.util.Collections;
private ListWriterCustomizer<IdentifiableDataObject, DataObjectIdentifier> customizer;
@Mock
private WriteContext ctx;
- private GenericListWriter<IdentifiableDataObject, DataObjectIdentifier> writer;
@Mock
private IdentifiableDataObject before;
@Mock
private IdentifiableDataObject after;
@Mock
private DataObjectIdentifier keyAfter;
+ @Mock
+ private Validator<IdentifiableDataObject> validator;
+
+ private GenericListWriter<IdentifiableDataObject, DataObjectIdentifier> writer;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
- writer = new GenericListWriter<>(DATA_OBJECT_ID, customizer);
+ writer = new GenericListWriter<>(DATA_OBJECT_ID, customizer, validator);
when(before.getKey()).thenReturn(beforeKey);
when(after.getKey()).thenReturn(keyAfter);
}
writer = new GenericListWriter<>(DATA_OBJECT_ID, customizer);
writer.deleteCurrentAttributes(DATA_OBJECT_ID, before, ctx);
}
+
+ @Test
+ public void testValidate() throws Exception {
+ assertEquals(DATA_OBJECT_ID, writer.getManagedDataObjectType());
+
+ final InstanceIdentifier<IdentifiableDataObject> keyedIdBefore =
+ (InstanceIdentifier<IdentifiableDataObject>) InstanceIdentifier.create(Collections
+ .singleton(new InstanceIdentifier.IdentifiableItem<>(IdentifiableDataObject.class, beforeKey)));
+ final InstanceIdentifier<IdentifiableDataObject> keyedIdAfter =
+ (InstanceIdentifier<IdentifiableDataObject>) InstanceIdentifier.create(Collections
+ .singleton(new InstanceIdentifier.IdentifiableItem<>(IdentifiableDataObject.class, keyAfter)));
+
+ writer.validate(DATA_OBJECT_ID, before, after, ctx);
+ verify(validator).validateUpdate(keyedIdBefore, before, after, ctx);
+
+ writer.validate(DATA_OBJECT_ID, before, null, ctx);
+ verify(validator).validateDelete(keyedIdBefore, before, ctx);
+
+ writer.validate(DATA_OBJECT_ID, null, after, ctx);
+ verify(validator).validateWrite(keyedIdAfter, after, ctx);
+ }
}
\ No newline at end of file
import static org.mockito.Mockito.verify;
import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
+import io.fd.honeycomb.translate.write.Validator;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import org.junit.Before;
private WriterCustomizer<DataObject> customizer;
@Mock
private WriteContext ctx;
- private GenericWriter<DataObject> writer;
@Mock
private DataObject before;
@Mock
private DataObject after;
+ @Mock
+ private Validator<DataObject> validator;
+
+ private GenericWriter<DataObject> writer;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
- writer = new GenericWriter<>(DATA_OBJECT_ID, customizer);
+ writer = new GenericWriter<>(DATA_OBJECT_ID, customizer, validator);
}
@Test
assertTrue(GenericWriter.isUpdateSupported(new NoopWriters.DirectUpdateWriterCustomizer()));
assertTrue(GenericWriter.isUpdateSupported(new NoopWriters.ParentImplDirectUpdateWriterCustomizer()));
}
+
+ @Test
+ public void testValidate() throws Exception {
+ assertEquals(DATA_OBJECT_ID, writer.getManagedDataObjectType());
+ writer.validate(DATA_OBJECT_ID, before, after, ctx);
+ verify(validator).validateUpdate(DATA_OBJECT_ID, before, after, ctx);
+
+ writer.validate(DATA_OBJECT_ID, before, null, ctx);
+ verify(validator).validateDelete(DATA_OBJECT_ID, before, ctx);
+
+ writer.validate(DATA_OBJECT_ID, null, after, ctx);
+ verify(validator).validateWrite(DATA_OBJECT_ID, after, ctx);
+ }
}
\ No newline at end of file
}
}
+ @Test(expected = IllegalArgumentException.class)
+ public void testValidateMissingWriter() throws Exception {
+ final FlatWriterRegistry flatWriterRegistry =
+ new FlatWriterRegistry(ImmutableMap.of(DataObject1.IID, writer1));
+
+ final Multimap<InstanceIdentifier<?>, DataObjectUpdate> updates = HashMultimap.create();
+ addUpdate(updates, DataObject1.class);
+ addUpdate(updates, DataObject2.class);
+ flatWriterRegistry.validateModifications(new WriterRegistry.DataObjectUpdates(updates, ImmutableMultimap.of()), ctx);
+ }
+
+ @Test
+ public void testValidateSingleWriter() throws Exception {
+ final FlatWriterRegistry flatWriterRegistry =
+ new FlatWriterRegistry(ImmutableMap.of(DataObject1.IID, writer1, DataObject2.IID, writer2));
+
+ final Multimap<InstanceIdentifier<?>, DataObjectUpdate> updates = HashMultimap.create();
+ final InstanceIdentifier<DataObject1> iid = InstanceIdentifier.create(DataObject1.class);
+ final InstanceIdentifier<DataObject1> iid2 = InstanceIdentifier.create(DataObject1.class);
+ final DataObject1 dataObject = mock(DataObject1.class);
+ updates.put(DataObject1.IID, DataObjectUpdate.create(iid, dataObject, dataObject));
+ updates.put(DataObject1.IID, DataObjectUpdate.create(iid2, dataObject, dataObject));
+ flatWriterRegistry
+ .validateModifications(new WriterRegistry.DataObjectUpdates(updates, ImmutableMultimap.of()), ctx);
+
+ verify(writer1).validate(iid, dataObject, dataObject, ctx);
+ verify(writer1).validate(iid2, dataObject, dataObject, ctx);
+ // Invoked when registry is being created
+ verifyNoMoreInteractions(writer1);
+ verifyZeroInteractions(writer2);
+ }
+
+ @Test
+ public void testValidateMultipleWriters() throws Exception {
+ final FlatWriterRegistry flatWriterRegistry =
+ new FlatWriterRegistry(ImmutableMap.of(DataObject1.IID, writer1, DataObject2.IID, writer2));
+
+ final Multimap<InstanceIdentifier<?>, DataObjectUpdate.DataObjectDelete> deletes = HashMultimap.create();
+ final Multimap<InstanceIdentifier<?>, DataObjectUpdate> updates = HashMultimap.create();
+ final InstanceIdentifier<DataObject1> iid = InstanceIdentifier.create(DataObject1.class);
+ final DataObject1 dataObject = mock(DataObject1.class);
+ // Writer 1 delete
+ deletes.put(DataObject1.IID,
+ ((DataObjectUpdate.DataObjectDelete) DataObjectUpdate.create(iid, dataObject, null)));
+ // Writer 1 create
+ updates.put(DataObject1.IID, DataObjectUpdate.create(iid, null, dataObject));
+ final InstanceIdentifier<DataObject2> iid2 = InstanceIdentifier.create(DataObject2.class);
+ final DataObject2 dataObject2 = mock(DataObject2.class);
+ // Writer 2 delete
+ deletes.put(DataObject2.IID,
+ ((DataObjectUpdate.DataObjectDelete) DataObjectUpdate.create(iid2, dataObject2, null)));
+ // Writer 2 update
+ updates.put(DataObject2.IID, DataObjectUpdate.create(iid2, dataObject2, dataObject2));
+ flatWriterRegistry.validateModifications(new WriterRegistry.DataObjectUpdates(updates, deletes), ctx);
+
+ // Ignore order
+ verify(writer1).validate(iid, dataObject, null, ctx);
+ verify(writer1).validate(iid, null, dataObject, ctx);
+ verify(writer2).validate(iid2, dataObject2, null, ctx);
+ verify(writer2).validate(iid2, dataObject2, dataObject2, ctx);
+
+ verifyNoMoreInteractions(writer1);
+ verifyNoMoreInteractions(writer2);
+ }
+
private <D extends DataObject> void addKeyedUpdate(final Multimap<InstanceIdentifier<?>, DataObjectUpdate> updates,
final Class<D> type) throws Exception {
final InstanceIdentifier<D> iid = (InstanceIdentifier<D>) type.getDeclaredField("IID").get(null);
void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id,
@Nonnull final D dataBefore,
@Nonnull final WriteContext writeContext) throws WriteFailedException;
-
}
package io.fd.honeycomb.translate.util.write;
+import static com.google.common.base.Preconditions.checkArgument;
+
import io.fd.honeycomb.translate.util.RWUtils;
+import io.fd.honeycomb.translate.write.DataValidationFailedException;
+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.write.Writer;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-
-import static com.google.common.base.Preconditions.checkArgument;
-
public abstract class AbstractGenericWriter<D extends DataObject> implements Writer<D> {
private static final Logger LOG = LoggerFactory.getLogger(AbstractGenericWriter.class);
private final InstanceIdentifier<D> instanceIdentifier;
private final boolean supportsUpdate;
+ private Validator<D> validator;
protected AbstractGenericWriter(final InstanceIdentifier<D> type, final boolean supportsUpdate) {
this.instanceIdentifier = RWUtils.makeIidWildcarded(type);
this.supportsUpdate = supportsUpdate;
}
+ protected AbstractGenericWriter(final InstanceIdentifier<D> type, final boolean supportsUpdate,
+ final Validator<D> validator) {
+ this(type, supportsUpdate);
+ this.validator = validator;
+ }
+
protected void writeCurrent(final InstanceIdentifier<D> id, final D data, final WriteContext ctx)
throws WriteFailedException {
LOG.debug("{}: Writing current: {} data: {}", this, id, data);
}
}
+ @Override
+ public void validate(@Nonnull final InstanceIdentifier<? extends DataObject> id,
+ @Nullable final DataObject dataBefore, @Nullable final DataObject dataAfter,
+ @Nonnull final WriteContext ctx) throws DataValidationFailedException {
+ if (validator == null) {
+ LOG.trace("{}: validator is not defined. Skipping validation for {}", this, id);
+ return;
+ }
+ LOG.trace("{}: Validating : {}, before: {} after: {}", this, id, dataBefore, dataAfter);
+
+ checkArgument(idPointsToCurrent(id), "Cannot handle data: %s. Only: %s can be handled by writer: %s",
+ id, getManagedDataObjectType(), this);
+
+ if (isWrite(dataBefore, dataAfter)) {
+ final D after = castToManaged(dataAfter);
+ validator.validateWrite(getManagedId(id, after), after, ctx);
+ } else if (isDelete(dataBefore, dataAfter)) {
+ final D before = castToManaged(dataBefore);
+ validator.validateDelete(getManagedId(id, before), before, ctx);
+ } else {
+ checkArgument(dataBefore != null && dataAfter != null, "No data to process");
+ if (dataBefore.equals(dataAfter)) {
+ LOG.debug("{}: Skipping validation (no update) for: {}", this, id);
+ // No change, ignore
+ return;
+ }
+ final D before = castToManaged(dataBefore);
+ validator.validateUpdate(getManagedId(id, before), before, castToManaged(dataAfter), ctx);
+ }
+ }
+
+ protected InstanceIdentifier<D> getManagedId(@Nonnull final InstanceIdentifier<? extends DataObject> currentId,
+ @Nonnull final D current) {
+ return (InstanceIdentifier<D>) currentId;
+ }
+
private void checkDataType(@Nonnull final DataObject dataAfter) {
checkArgument(getManagedDataObjectType().getTargetType().isAssignableFrom(dataAfter.getClass()));
}
Code Review / honeycomb.git / commitdiff