diff options
Diffstat (limited to 'v3po/data-impl/src/main/java/io/fd/honeycomb/v3po/data/impl/VppConfigDataTree.java')
| -rw-r--r-- | v3po/data-impl/src/main/java/io/fd/honeycomb/v3po/data/impl/VppConfigDataTree.java | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/v3po/data-impl/src/main/java/io/fd/honeycomb/v3po/data/impl/VppConfigDataTree.java b/v3po/data-impl/src/main/java/io/fd/honeycomb/v3po/data/impl/VppConfigDataTree.java new file mode 100644 index 000000000..6e01306b0 --- /dev/null +++ b/v3po/data-impl/src/main/java/io/fd/honeycomb/v3po/data/impl/VppConfigDataTree.java @@ -0,0 +1,172 @@ +/* + * 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.v3po.data.impl; + +import static com.google.common.base.Preconditions.checkNotNull; +import static io.fd.honeycomb.v3po.data.impl.DataTreeUtils.childrenFromNormalized; + +import com.google.common.base.Optional; +import com.google.common.util.concurrent.CheckedFuture; +import com.google.common.util.concurrent.Futures; +import io.fd.honeycomb.v3po.data.ReadableVppDataTree; +import io.fd.honeycomb.v3po.data.VppDataTree; +import io.fd.honeycomb.v3po.data.VppDataTreeSnapshot; +import io.fd.honeycomb.v3po.translate.TranslationException; +import io.fd.honeycomb.v3po.translate.util.write.TransactionWriteContext; +import io.fd.honeycomb.v3po.translate.write.WriteContext; +import io.fd.honeycomb.v3po.translate.write.WriterRegistry; +import java.util.Collections; +import java.util.Map; +import javax.annotation.Nonnull; +import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException; +import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction; +import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; +import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier; +import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode; +import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * VppDataTree implementation for configuration data. + */ +public final class VppConfigDataTree implements VppDataTree { + + private static final Logger LOG = LoggerFactory.getLogger(VppConfigDataTree.class); + + private final BindingNormalizedNodeSerializer serializer; + private final DataTree dataTree; + private final WriterRegistry writer; + public static final ReadableVppDataTree EMPTY_OPERATIONAL = new ReadableVppDataTree() { + @Override + public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> read( + @Nonnull final YangInstanceIdentifier path) { + return Futures.immediateCheckedFuture(Optional.<NormalizedNode<?, ?>>absent()); + } + }; + + /** + * Creates configuration data tree instance. + * + * @param serializer service for serialization between Java Binding Data representation and NormalizedNode + * representation. + * @param dataTree data tree for configuration data representation + * @param vppWriter service for translation between Java Binding Data and Vpp. + */ + public VppConfigDataTree(@Nonnull final BindingNormalizedNodeSerializer serializer, + @Nonnull final DataTree dataTree, @Nonnull final WriterRegistry vppWriter) { + this.serializer = checkNotNull(serializer, "serializer should not be null"); + this.dataTree = checkNotNull(dataTree, "dataTree should not be null"); + this.writer = checkNotNull(vppWriter, "vppWriter should not be null"); + } + + @Override + public VppDataTreeSnapshot takeSnapshot() { + return new ConfigSnapshot(dataTree.takeSnapshot()); + } + + @Override + public void commit(final DataTreeModification modification) + throws DataValidationFailedException, TranslationException { + dataTree.validate(modification); + + final DataTreeCandidate candidate = dataTree.prepare(modification); + + final DataTreeCandidateNode rootNode = candidate.getRootNode(); + final YangInstanceIdentifier rootPath = candidate.getRootPath(); + final Optional<NormalizedNode<?, ?>> normalizedDataBefore = rootNode.getDataBefore(); + final Optional<NormalizedNode<?, ?>> normalizedDataAfter = rootNode.getDataAfter(); + LOG.debug("VppConfigDataTree.commit() rootPath={}, rootNode={}, dataBefore={}, dataAfter={}", + rootPath, rootNode, normalizedDataBefore, normalizedDataAfter); + + final Map<InstanceIdentifier<?>, DataObject> nodesBefore = extractNetconfData(normalizedDataBefore); + LOG.debug("VppConfigDataTree.commit() extracted nodesBefore={}", nodesBefore.keySet()); + + final Map<InstanceIdentifier<?>, DataObject> nodesAfter = extractNetconfData(normalizedDataAfter); + LOG.debug("VppConfigDataTree.commit() extracted nodesAfter={}", nodesAfter.keySet()); + + + final DOMDataReadOnlyTransaction beforeTx = new VppReadOnlyTransaction(EMPTY_OPERATIONAL, takeSnapshot()); + final ConfigSnapshot modificationSnapshot = new ConfigSnapshot(modification); + final DOMDataReadOnlyTransaction afterTx = new VppReadOnlyTransaction(EMPTY_OPERATIONAL, modificationSnapshot); + try(final WriteContext ctx = new TransactionWriteContext(serializer, beforeTx, afterTx)) { + writer.update(nodesBefore, nodesAfter, ctx); + } catch (io.fd.honeycomb.v3po.translate.write.WriterRegistry.BulkUpdateException e) { + LOG.warn("Failed to apply all changes", e); + LOG.info("Trying to revert successful changes for current transaction"); + + try { + e.revertChanges(); + LOG.info("Changes successfully reverted"); + } catch (io.fd.honeycomb.v3po.translate.write.WriterRegistry.Reverter.RevertFailedException revertFailedException) { + // fail with failed revert + LOG.error("Failed to revert successful changes", revertFailedException); + throw revertFailedException; + } + + throw e; // fail with success revert + } catch (TranslationException e) { + LOG.error("Error while processing data change (before={}, after={})", nodesBefore, nodesAfter, e); + throw e; + } + + dataTree.commit(candidate); + } + + private Map<InstanceIdentifier<?>, DataObject> extractNetconfData( + final Optional<NormalizedNode<?, ?>> parentOptional) { + if (parentOptional.isPresent()) { + final DataContainerNode parent = (DataContainerNode) parentOptional.get(); + return childrenFromNormalized(parent, serializer); + } + return Collections.emptyMap(); + } + + private final static class ConfigSnapshot implements VppDataTreeSnapshot { + private final DataTreeSnapshot snapshot; + + ConfigSnapshot(@Nonnull final DataTreeSnapshot snapshot) { + this.snapshot = snapshot; + } + + @Override + public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> read( + @Nonnull final YangInstanceIdentifier path) { + final Optional<NormalizedNode<?, ?>> node = snapshot.readNode(path); + if (LOG.isTraceEnabled() && node.isPresent()) { + LOG.trace("ConfigSnapshot.read: {}", node.get()); + } + return Futures.immediateCheckedFuture(node); + } + + @Override + public DataTreeModification newModification() { + return snapshot.newModification(); + } + } +} + + + |