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/*
* 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> modificationHandler) {
switch (store) {
case CONFIGURATION:
checkArgument(configModification != null, "Modification of %s is not supported", store);
modificationHandler.accept(configModification);
break;
case OPERATIONAL:
checkArgument(operationalModification != null, "Modification of %s is not supported", store);
modificationHandler.accept(operationalModification);
break;
default:
throw new IllegalArgumentException("Unable to handle operation for type " + store);
}
}
@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));
}
}
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