| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.bookkeeper.metadata.etcd.helpers; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| import static org.apache.bookkeeper.common.concurrent.FutureUtils.result; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import io.etcd.jetcd.ByteSequence; |
| |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.function.Function; |
| |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.bookkeeper.metadata.etcd.testing.EtcdTestBase; |
| import org.apache.commons.lang.RandomStringUtils; |
| import org.apache.commons.lang3.StringUtils; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Integration test helpers. |
| */ |
| @Slf4j |
| public class HelpersTest extends EtcdTestBase { |
| |
| private static final Function<ByteSequence, String> BYTE_SEQUENCE_STRING_FUNCTION = |
| bs -> bs.toString(UTF_8); |
| |
| private static String getKey(String scope, int i) { |
| return String.format("%s-key-%010d", scope, i); |
| } |
| |
| private String scope; |
| |
| @Before |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| scope = RandomStringUtils.randomAlphabetic(8); |
| } |
| |
| @Test |
| public void testEmptyKeyStream() throws Exception { |
| KeyStream<String> ks = new KeyStream<>( |
| etcdClient.getKVClient(), |
| ByteSequence.from(getKey(scope, 0), UTF_8), |
| ByteSequence.from(getKey(scope, 100), UTF_8), |
| BYTE_SEQUENCE_STRING_FUNCTION |
| ); |
| List<String> values = result(ks.readNext()); |
| assertTrue(values.isEmpty()); |
| |
| // read the values again |
| values = result(ks.readNext()); |
| assertTrue(values.isEmpty()); |
| } |
| |
| @Test |
| public void testKeyStreamBatch1() throws Exception { |
| testKeyStream(20, 1); |
| } |
| |
| @Test |
| public void testKeyStreamBatch2() throws Exception { |
| testKeyStream(20, 2); |
| } |
| |
| @Test |
| public void testKeyStreamBatch7() throws Exception { |
| testKeyStream(20, 7); |
| } |
| |
| @Test |
| public void testKeyStreamBatch10() throws Exception { |
| testKeyStream(20, 10); |
| } |
| |
| @Test |
| public void testKeyStreamBatch20() throws Exception { |
| testKeyStream(20, 20); |
| } |
| |
| @Test |
| public void testKeyStreamBatch40() throws Exception { |
| testKeyStream(20, 40); |
| } |
| |
| @Test |
| public void testKeyStreamBatchUnlimited() throws Exception { |
| testKeyStream(20, 0); |
| } |
| |
| private void testKeyStream(int numKeys, int batchSize) throws Exception { |
| for (int i = 0; i < numKeys; i++) { |
| String key = getKey(scope, i); |
| ByteSequence keyBs = ByteSequence.from(key.getBytes(UTF_8)); |
| result(etcdClient.getKVClient().put(keyBs, keyBs)); |
| } |
| |
| KeyStream<Integer> ks = openKeyStream(batchSize); |
| AtomicInteger numReceived = new AtomicInteger(0); |
| while (true) { |
| List<Integer> values = result(ks.readNext()); |
| log.info("Received values : {}", values); |
| if (values.isEmpty()) { |
| break; |
| } |
| for (int value : values) { |
| assertEquals(numReceived.getAndIncrement(), value); |
| } |
| } |
| assertEquals(numKeys, numReceived.get()); |
| } |
| |
| private void testKeyIterator(int numKeys, int batchSize) throws Exception { |
| for (int i = 0; i < numKeys; i++) { |
| String key = getKey(scope, i); |
| ByteSequence keyBs = ByteSequence.from(key, UTF_8); |
| result(etcdClient.getKVClient().put(keyBs, keyBs)); |
| } |
| |
| KeyStream<Integer> ks = openKeyStream(batchSize); |
| KeyIterator<Integer> ki = new KeyIterator<>(ks); |
| |
| AtomicInteger numReceived = new AtomicInteger(0); |
| while (ki.hasNext()) { |
| List<Integer> values = ki.next(); |
| log.info("Received values : {}", values); |
| if (values.isEmpty()) { |
| break; |
| } |
| for (int value : values) { |
| assertEquals(numReceived.getAndIncrement(), value); |
| } |
| } |
| assertEquals(numKeys, numReceived.get()); |
| } |
| |
| @Test |
| public void testKeyIteratorBatch1() throws Exception { |
| testKeyIterator(20, 1); |
| } |
| |
| @Test |
| public void testKeyIteratorBatch2() throws Exception { |
| testKeyIterator(20, 2); |
| } |
| |
| @Test |
| public void testKeyIteratorBatch7() throws Exception { |
| testKeyIterator(20, 7); |
| } |
| |
| @Test |
| public void testKeyIteratorBatch10() throws Exception { |
| testKeyIterator(20, 10); |
| } |
| |
| @Test |
| public void testKeyIteratorBatch20() throws Exception { |
| testKeyIterator(20, 20); |
| } |
| |
| @Test |
| public void testKeyIteratorBatch40() throws Exception { |
| testKeyIterator(20, 40); |
| } |
| |
| @Test |
| public void testKeyIteratorBatchUnlimited() throws Exception { |
| testKeyIterator(20, 0); |
| } |
| |
| private KeyStream<Integer> openKeyStream(int batchSize) { |
| KeyStream<Integer> ks = new KeyStream<>( |
| etcdClient.getKVClient(), |
| ByteSequence.from(getKey(scope, 0).getBytes(UTF_8)), |
| ByteSequence.from(getKey(scope, Integer.MAX_VALUE).getBytes(UTF_8)), |
| bs -> { |
| String[] keyParts = StringUtils.split(bs.toString(UTF_8), '-'); |
| try { |
| return Integer.parseInt(keyParts[2]); |
| } catch (NumberFormatException nfe) { |
| log.error("Failed to parse key string '{}' : ", |
| bs.toString(UTF_8), nfe); |
| return -0xabcd; |
| } |
| }, |
| batchSize |
| ); |
| return ks; |
| } |
| |
| } |