*/
package org.opendaylight.controller.md.inventory.manager;
-import com.google.common.base.Preconditions;
-import com.google.common.util.concurrent.CheckedFuture;
-import com.google.common.util.concurrent.FutureCallback;
-import com.google.common.util.concurrent.Futures;
+import java.util.ArrayList;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingDeque;
+
+import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
-import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-class FlowCapableInventoryProvider implements AutoCloseable, Runnable {
+import com.google.common.base.Preconditions;
+
+class FlowCapableInventoryProvider implements AutoCloseable, Runnable, TransactionChainListener {
private static final Logger LOG = LoggerFactory.getLogger(FlowCapableInventoryProvider.class);
private static final int QUEUE_DEPTH = 500;
private static final int MAX_BATCH = 100;
private final NotificationProviderService notificationService;
private final DataBroker dataBroker;
+ private BindingTransactionChain txChain;
private ListenerRegistration<?> listenerRegistration;
private Thread thread;
final NodeChangeCommiter changeCommiter = new NodeChangeCommiter(FlowCapableInventoryProvider.this);
this.listenerRegistration = this.notificationService.registerNotificationListener(changeCommiter);
+ this.txChain = (dataBroker.createTransactionChain(this));
thread = new Thread(this);
thread.setDaemon(true);
thread.setName("FlowCapableInventoryProvider");
void enqueue(final InventoryOperation op) {
try {
queue.put(op);
- } catch (InterruptedException e) {
+ } catch (final InterruptedException e) {
LOG.warn("Failed to enqueue operation {}", op, e);
}
}
- @Override
- public void close() throws InterruptedException {
- LOG.info("Flow Capable Inventory Provider stopped.");
- if (this.listenerRegistration != null) {
- try {
- this.listenerRegistration.close();
- } catch (Exception e) {
- LOG.error("Failed to stop inventory provider", e);
- }
- listenerRegistration = null;
- }
-
- if (thread != null) {
- thread.interrupt();
- thread.join();
- thread = null;
- }
-
-
- }
-
@Override
public void run() {
try {
for (; ; ) {
InventoryOperation op = queue.take();
-
- final ReadWriteTransaction tx = dataBroker.newReadWriteTransaction();
- LOG.debug("New operations available, starting transaction {}", tx.getIdentifier());
-
int ops = 0;
+ final ArrayList<InventoryOperation> opsToApply = new ArrayList<>(MAX_BATCH);
do {
- op.applyOperation(tx);
-
+ opsToApply.add(op);
ops++;
if (ops < MAX_BATCH) {
op = queue.poll();
op = null;
}
} while (op != null);
-
- LOG.debug("Processed {} operations, submitting transaction {}", ops, tx.getIdentifier());
-
- final CheckedFuture<Void, TransactionCommitFailedException> result = tx.submit();
- Futures.addCallback(result, new FutureCallback<Object>() {
- @Override
- public void onSuccess(Object o) {
- }
-
- @Override
- public void onFailure(Throwable throwable) {
- LOG.error("Transaction {} failed.", tx.getIdentifier(), throwable);
- }
- });
+ submitOperations(opsToApply);
}
- } catch (InterruptedException e) {
+ } catch (final InterruptedException e) {
LOG.info("Processing interrupted, terminating", e);
}
queue.poll();
}
}
+
+ /**
+ * Starts new empty transaction, custimizes it with submitted operations
+ * and submit it to data broker.
+ *
+ * If transaction chain failed during customization of transaction
+ * it allocates new chain and empty transaction and customizes it
+ * with submitted operations.
+ *
+ * This does not retry failed transaction. It only retries it when
+ * chain failed during customization of transaction chain.
+ *
+ * @param opsToApply
+ */
+ private void submitOperations(final ArrayList<InventoryOperation> opsToApply) {
+ final ReadWriteTransaction tx = createCustomizedTransaction(opsToApply);
+ LOG.debug("Processed {} operations, submitting transaction {}", opsToApply.size(), tx.getIdentifier());
+ try {
+ tx.submit();
+ } catch (final IllegalStateException e) {
+ /*
+ * Transaction chain failed during doing batch, so we need to null
+ * tx chain and continue processing queue.
+ *
+ * We fail current txChain which was allocated with createTransaction.
+ */
+ failCurrentChain(txChain);
+ /*
+ * We will retry transaction once in order to not loose any data.
+ *
+ */
+ final ReadWriteTransaction retryTx = createCustomizedTransaction(opsToApply);
+ retryTx.submit();
+ }
+ }
+
+ /**
+ * Creates new empty ReadWriteTransaction. If transaction chain
+ * was failed, it will allocate new transaction chain
+ * and assign it with this Operation Executor.
+ *
+ * This call is synchronized to prevent reace with {@link #failCurrentChain(TransactionChain)}.
+ *
+ * @return New Empty ReadWrite transaction, which continues this chain or starts new transaction
+ * chain.
+ */
+ private synchronized ReadWriteTransaction newEmptyTransaction() {
+ try {
+ if(txChain == null) {
+ // Chain was broken so we need to replace it.
+ txChain = dataBroker.createTransactionChain(this);
+ }
+ return txChain.newReadWriteTransaction();
+ } catch (final IllegalStateException e) {
+ LOG.debug("Chain is broken, need to allocate new transaction chain.",e);
+ /*
+ * Chain was broken by previous transaction,
+ * but there was race between this.
+ * Chain will be closed by #onTransactionChainFailed method.
+ */
+ txChain = dataBroker.createTransactionChain(this);
+ return txChain.newReadWriteTransaction();
+ }
+ }
+
+ /**
+ * Creates customized not-submitted transaction, which is ready to be submitted.
+ *
+ * @param opsToApply Operations which are used to customize transaction.
+ * @return Non-empty transaction.
+ */
+ private ReadWriteTransaction createCustomizedTransaction(final ArrayList<InventoryOperation> opsToApply) {
+ final ReadWriteTransaction tx = newEmptyTransaction();
+ for(final InventoryOperation op : opsToApply) {
+ op.applyOperation(tx);
+ }
+ return tx;
+ }
+
+ private synchronized void failCurrentChain(final TransactionChain<?, ?> chain) {
+ if(txChain == chain) {
+ txChain = null;
+ }
+ }
+
+ @Override
+ public void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction,
+ final Throwable cause) {
+ LOG.error("Failed to export Flow Capable Inventory, Transaction {} failed.", transaction.getIdentifier(), cause);
+ chain.close();
+ if(txChain == chain) {
+ // Current chain is broken, so we will null it, in order to not use it.
+ failCurrentChain(chain);
+ }
+ }
+
+ @Override
+ public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
+ // NOOP
+ }
+
+ @Override
+ public void close() throws InterruptedException {
+ LOG.info("Flow Capable Inventory Provider stopped.");
+ if (this.listenerRegistration != null) {
+ try {
+ this.listenerRegistration.close();
+ } catch (final Exception e) {
+ LOG.error("Failed to stop inventory provider", e);
+ }
+ listenerRegistration = null;
+ }
+
+ if (thread != null) {
+ thread.interrupt();
+ thread.join();
+ thread = null;
+ }
+ if (txChain != null) {
+ try {
+ txChain.close();
+ } catch (final IllegalStateException e) {
+ // It is possible chain failed and was closed by #onTransactionChainFailed
+ LOG.debug("Chain was already closed.");
+ }
+ txChain = null;
+ }
+ }
}
Code Review / controller.git / blobdiff