2 * Copyright (c) 2017 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.clustering.it.provider.impl;
10 import static java.util.Objects.requireNonNull;
11 import static org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes.mapEntryBuilder;
13 import com.google.common.util.concurrent.FluentFuture;
14 import com.google.common.util.concurrent.FutureCallback;
15 import com.google.common.util.concurrent.ListenableFuture;
16 import com.google.common.util.concurrent.SettableFuture;
17 import java.util.LinkedHashSet;
19 import java.util.SplittableRandom;
20 import java.util.concurrent.ConcurrentHashMap;
21 import java.util.concurrent.ExecutionException;
22 import java.util.concurrent.TimeUnit;
23 import java.util.concurrent.TimeoutException;
24 import java.util.concurrent.atomic.AtomicLong;
25 import org.eclipse.jdt.annotation.NonNull;
26 import org.opendaylight.mdsal.common.api.CommitInfo;
27 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
28 import org.opendaylight.mdsal.common.api.OptimisticLockFailedException;
29 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
30 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
31 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
32 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.WriteTransactionsInput;
33 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.WriteTransactionsOutput;
34 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.WriteTransactionsOutputBuilder;
35 import org.opendaylight.yangtools.yang.common.Empty;
36 import org.opendaylight.yangtools.yang.common.ErrorType;
37 import org.opendaylight.yangtools.yang.common.RpcResult;
38 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
39 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
40 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
41 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
42 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
43 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
44 import org.opendaylight.yangtools.yang.data.spi.node.ImmutableNodes;
45 import org.slf4j.Logger;
46 import org.slf4j.LoggerFactory;
48 public abstract class WriteTransactionsHandler extends AbstractTransactionHandler {
49 private static final class Chained extends WriteTransactionsHandler implements FutureCallback<Empty> {
50 private final SplittableRandom random = new SplittableRandom();
51 private final DOMTransactionChain transactionChain;
53 Chained(final DOMDataBroker dataBroker, final YangInstanceIdentifier idListItem,
54 final WriteTransactionsInput input) {
55 super(idListItem, input);
56 transactionChain = dataBroker.createTransactionChain();
57 transactionChain.addCallback(this);
61 DOMDataTreeWriteTransaction createTransaction() {
62 return transactionChain.newWriteOnlyTransaction();
66 int nextInt(final int bound) {
67 return random.nextInt(bound);
71 public void onFailure(final Throwable cause) {
72 // This is expected to happen frequently in isolation testing.
73 LOG.debug("Transaction chain failed.", cause);
74 // Do not return RPC here, rely on transaction failure to call runFailed.
78 public void onSuccess(final Empty result) {
79 LOG.debug("Transaction chain closed successfully.");
83 private static final class Simple extends WriteTransactionsHandler {
84 private final LinkedHashSet<Integer> previousNumbers = new LinkedHashSet<>();
85 private final SplittableRandom random = new SplittableRandom();
86 private final DOMDataBroker dataBroker;
88 Simple(final DOMDataBroker dataBroker, final YangInstanceIdentifier idListItem,
89 final WriteTransactionsInput input) {
90 super(idListItem, input);
91 this.dataBroker = requireNonNull(dataBroker);
95 DOMDataTreeWriteTransaction createTransaction() {
96 return dataBroker.newWriteOnlyTransaction();
100 int nextInt(final int bound) {
103 nextInt = random.nextInt(bound);
104 } while (previousNumbers.contains(nextInt));
106 if (previousNumbers.size() > 100000) {
107 previousNumbers.iterator().remove();
109 previousNumbers.add(nextInt);
115 private static final Logger LOG = LoggerFactory.getLogger(WriteTransactionsHandler.class);
117 final SettableFuture<RpcResult<WriteTransactionsOutput>> completionFuture = SettableFuture.create();
118 private final Set<Integer> usedValues = ConcurrentHashMap.newKeySet();
119 private final YangInstanceIdentifier idListItem;
121 private final AtomicLong insertTx = new AtomicLong();
122 private final AtomicLong deleteTx = new AtomicLong();
124 WriteTransactionsHandler(final YangInstanceIdentifier idListItem, final WriteTransactionsInput input) {
126 this.idListItem = requireNonNull(idListItem);
129 public static ListenableFuture<RpcResult<WriteTransactionsOutput>> start(final DOMDataBroker domDataBroker,
130 final WriteTransactionsInput input) {
131 LOG.info("Starting write transactions with input {}", input);
133 final String id = input.getId();
134 final MapEntryNode entry = mapEntryBuilder(ID_INT, ID, id)
135 .withChild(ImmutableNodes.newSystemMapBuilder()
136 .withNodeIdentifier(new NodeIdentifier(ITEM))
139 final YangInstanceIdentifier idListItem = ID_INT_YID.node(entry.name());
141 final ContainerNode containerNode = ImmutableNodes.newContainerBuilder()
142 .withNodeIdentifier(new NodeIdentifier(ID_INTS))
143 .withChild(ImmutableNodes.newSystemMapBuilder()
144 .withNodeIdentifier(new NodeIdentifier(ID_INT))
148 DOMDataTreeWriteTransaction tx = domDataBroker.newWriteOnlyTransaction();
149 // write only the top list
150 tx.merge(LogicalDatastoreType.CONFIGURATION, ID_INTS_YID, containerNode);
152 tx.commit().get(INIT_TX_TIMEOUT_SECONDS, TimeUnit.SECONDS);
153 } catch (InterruptedException | TimeoutException e) {
154 LOG.error("Error writing top-level path {}: {}", ID_INTS_YID, containerNode, e);
155 return RpcResultBuilder.<WriteTransactionsOutput>failed().withError(ErrorType.APPLICATION,
156 String.format("Could not start write transactions - error writing top-level path %s: %s",
157 ID_INTS_YID, containerNode), e).buildFuture();
158 } catch (ExecutionException e) {
159 final Throwable cause = e.getCause();
160 if (cause instanceof OptimisticLockFailedException) {
161 // when multiple write-transactions are executed concurrently we need to ignore this.
162 // If we get optimistic lock here it means id-ints already exists and we can continue.
163 LOG.debug("Got an optimistic lock when writing initial top level list element.", e);
165 LOG.error("Error writing top-level path {}: {}", ID_INTS_YID, containerNode, e);
166 return RpcResultBuilder.<WriteTransactionsOutput>failed().withError(ErrorType.APPLICATION,
167 String.format("Could not start write transactions - error writing top-level path %s: %s",
168 ID_INTS_YID, containerNode), e).buildFuture();
172 tx = domDataBroker.newWriteOnlyTransaction();
173 tx.merge(LogicalDatastoreType.CONFIGURATION, idListItem, entry);
176 tx.commit().get(INIT_TX_TIMEOUT_SECONDS, TimeUnit.SECONDS);
177 } catch (InterruptedException | ExecutionException | TimeoutException e) {
178 LOG.error("Error writing top-level path {}: {}", idListItem, entry, e);
179 return RpcResultBuilder.<WriteTransactionsOutput>failed().withError(ErrorType.APPLICATION,
180 String.format("Could not start write transactions - error writing list entry path %s: %s",
181 idListItem, entry), e).buildFuture();
184 LOG.debug("Filling the item list with initial values.");
186 final YangInstanceIdentifier itemListId = idListItem.node(ITEM);
187 tx = domDataBroker.newWriteOnlyTransaction();
188 final MapNode itemListNode = ImmutableNodes.newSystemMapBuilder()
189 .withNodeIdentifier(new NodeIdentifier(ITEM))
191 tx.put(LogicalDatastoreType.CONFIGURATION, itemListId, itemListNode);
194 tx.commit().get(INIT_TX_TIMEOUT_SECONDS, TimeUnit.SECONDS);
195 } catch (InterruptedException | ExecutionException | TimeoutException e) {
196 LOG.error("Error filling initial item list path {}: {}", itemListId, itemListNode, e);
197 return RpcResultBuilder.<WriteTransactionsOutput>failed().withError(ErrorType.APPLICATION,
198 String.format("Could not start write transactions - error filling initial item list path %s: %s",
199 itemListId, itemListNode), e).buildFuture();
202 final WriteTransactionsHandler handler;
203 if (input.getChainedTransactions()) {
204 handler = new Chained(domDataBroker, idListItem, input);
206 handler = new Simple(domDataBroker, idListItem, input);
211 LOG.info("Write transactions successfully started");
212 return handler.completionFuture;
216 FluentFuture<? extends @NonNull CommitInfo> execWrite(final long txId) {
217 final int i = nextInt(MAX_ITEM + 1);
219 final YangInstanceIdentifier entryId =
220 idListItem.node(ITEM).node(YangInstanceIdentifier.NodeIdentifierWithPredicates.of(ITEM, NUMBER, i));
222 final DOMDataTreeWriteTransaction tx = createTransaction();
224 if (usedValues.contains(i)) {
225 LOG.debug("Deleting item: {}", i);
226 deleteTx.incrementAndGet();
227 tx.delete(LogicalDatastoreType.CONFIGURATION, entryId);
228 usedValues.remove(i);
231 LOG.debug("Inserting item: {}", i);
232 insertTx.incrementAndGet();
233 tx.put(LogicalDatastoreType.CONFIGURATION, entryId, mapEntryBuilder(ITEM, NUMBER, i).build());
241 void runFailed(final Throwable cause, final long txId) {
242 completionFuture.set(RpcResultBuilder.<WriteTransactionsOutput>failed()
243 .withError(ErrorType.APPLICATION, "Commit failed for tx # " + txId, cause).build());
247 void runSuccessful(final long allTx) {
248 final WriteTransactionsOutput output = new WriteTransactionsOutputBuilder()
250 .setInsertTx(insertTx.get())
251 .setDeleteTx(deleteTx.get())
254 completionFuture.set(RpcResultBuilder.<WriteTransactionsOutput>success()
255 .withResult(output).build());
259 void runTimedOut(final String cause) {
260 completionFuture.set(RpcResultBuilder.<WriteTransactionsOutput>failed()
261 .withError(ErrorType.APPLICATION, cause).build());
264 abstract DOMDataTreeWriteTransaction createTransaction();
266 abstract int nextInt(int bound);