diff options
Diffstat (limited to 'infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/WriteTransaction.java')
-rw-r--r-- | infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/WriteTransaction.java | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/WriteTransaction.java b/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/WriteTransaction.java new file mode 100644 index 000000000..6bc6b1b4b --- /dev/null +++ b/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/WriteTransaction.java @@ -0,0 +1,177 @@ +/* + * 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.data.impl; + +import static com.google.common.base.Preconditions.checkArgument; +import static java.util.Objects.requireNonNull; +import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.CANCELED; +import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.COMMITED; +import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.FAILED; +import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.NEW; +import static org.opendaylight.controller.md.sal.common.api.TransactionStatus.SUBMITED; + +import com.google.common.base.Preconditions; +import com.google.common.util.concurrent.CheckedFuture; +import com.google.common.util.concurrent.Futures; +import com.google.common.util.concurrent.ListenableFuture; +import io.fd.honeycomb.data.DataModification; +import io.fd.honeycomb.translate.TranslationException; +import java.util.function.Consumer; +import javax.annotation.Nonnull; +import javax.annotation.Nullable; +import javax.annotation.concurrent.NotThreadSafe; +import org.opendaylight.controller.md.sal.common.api.TransactionStatus; +import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType; +import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException; +import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction; +import org.opendaylight.yangtools.yang.common.RpcResult; +import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier; +import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode; +import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +@NotThreadSafe +final class WriteTransaction implements DOMDataWriteTransaction { + + private static final Logger LOG = LoggerFactory.getLogger(WriteTransaction.class); + + @Nullable + private DataModification operationalModification; + @Nullable + private DataModification configModification; + private TransactionStatus status = NEW; + + private WriteTransaction(@Nullable final DataModification configModification, + @Nullable final DataModification operationalModification) { + this.operationalModification = operationalModification; + this.configModification = configModification; + } + + private void checkIsNew() { + Preconditions.checkState(status == NEW, "Transaction was submitted or canceled"); + } + + @Override + public void put(final LogicalDatastoreType store, final YangInstanceIdentifier path, + final NormalizedNode<?, ?> data) { + LOG.debug("WriteTransaction.put() store={}, path={}, data={}", store, path, data); + checkIsNew(); + handleOperation(store, (modification) -> modification.write(path, data)); + } + + private void handleOperation(final LogicalDatastoreType store, + final Consumer<DataModification> r) { + switch (store) { + case CONFIGURATION: + checkArgument(configModification != null, "Modification of %s is not supported", store); + r.accept(configModification); + break; + case OPERATIONAL: + checkArgument(operationalModification != null, "Modification of %s is not supported", store); + r.accept(operationalModification); + break; + } + } + + @Override + public void merge(final LogicalDatastoreType store, final YangInstanceIdentifier path, + final NormalizedNode<?, ?> data) { + LOG.debug("WriteTransaction.merge() store={}, path={}, data={}", store, path, data); + checkIsNew(); + handleOperation(store, (modification) -> modification.merge(path, data)); + } + + @Override + public boolean cancel() { + if (status != NEW) { + // only NEW transactions can be cancelled + return false; + } else { + status = CANCELED; + return true; + } + } + + @Override + public void delete(LogicalDatastoreType store, final YangInstanceIdentifier path) { + LOG.debug("WriteTransaction.delete() store={}, path={}", store, path); + checkIsNew(); + handleOperation(store, (modification) -> modification.delete(path)); + } + + @Override + public CheckedFuture<Void, TransactionCommitFailedException> submit() { + LOG.trace("WriteTransaction.submit()"); + checkIsNew(); + + try { + status = SUBMITED; + + // Validate first to catch any issues before attempting commit + if (configModification != null) { + configModification.validate(); + } + if (operationalModification != null) { + operationalModification.validate(); + } + + if(configModification != null) { + configModification.commit(); + } + if(operationalModification != null) { + operationalModification.commit(); + } + + status = COMMITED; + } catch (DataValidationFailedException | TranslationException e) { + status = FAILED; + LOG.error("Failed modify data tree", e); + return Futures.immediateFailedCheckedFuture( + new TransactionCommitFailedException("Failed to validate DataTreeModification", e)); + } + return Futures.immediateCheckedFuture(null); + } + + @Override + @Deprecated + public ListenableFuture<RpcResult<TransactionStatus>> commit() { + throw new UnsupportedOperationException("deprecated"); + } + + @Override + public Object getIdentifier() { + return this; + } + + + @Nonnull + static WriteTransaction createOperationalOnly(@Nonnull final DataModification operationalData) { + return new WriteTransaction(null, requireNonNull(operationalData)); + } + + @Nonnull + static WriteTransaction createConfigOnly(@Nonnull final DataModification configData) { + return new WriteTransaction(requireNonNull(configData), null); + } + + @Nonnull + static WriteTransaction create(@Nonnull final DataModification configData, + @Nonnull final DataModification operationalData) { + return new WriteTransaction(requireNonNull(configData), requireNonNull(operationalData)); + } +} |