| /* |
| * 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.samza.operators.impl.store; |
| |
| import org.apache.samza.serializers.ByteSerde; |
| import org.apache.samza.serializers.Serde; |
| import org.apache.samza.serializers.StringSerde; |
| import org.apache.samza.storage.kv.ClosableIterator; |
| import org.apache.samza.storage.kv.KeyValueStore; |
| import org.apache.samza.util.TimestampedValue; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class TestTimeSeriesStoreImpl { |
| |
| @Test |
| public void testGetOnTimestampBoundaries() { |
| TimeSeriesStore<String, byte[]> timeSeriesStore = newTimeSeriesStore(new StringSerde("UTF-8"), true); |
| |
| // insert an entry with key "hello" at timestamps "1" and "2" |
| timeSeriesStore.put("hello", "world-1".getBytes(), 1L); |
| timeSeriesStore.put("hello", "world-1".getBytes(), 2L); |
| timeSeriesStore.put("hello", "world-2".getBytes(), 2L); |
| |
| // read from time-range |
| List<TimestampedValue<byte[]>> values = readStore(timeSeriesStore, "hello", 0L, 1L); |
| Assert.assertEquals(0, values.size()); |
| |
| // read from time-range [1,2) should return one entry |
| values = readStore(timeSeriesStore, "hello", 1L, 2L); |
| Assert.assertEquals(1, values.size()); |
| Assert.assertEquals("world-1", new String(values.get(0).getValue())); |
| |
| // read from time-range [2,3) should return two entries |
| values = readStore(timeSeriesStore, "hello", 2L, 3L); |
| Assert.assertEquals(2, values.size()); |
| Assert.assertEquals("world-1", new String(values.get(0).getValue())); |
| Assert.assertEquals(2L, values.get(0).getTimestamp()); |
| |
| // read from time-range [0,3) should return three entries |
| values = readStore(timeSeriesStore, "hello", 0L, 3L); |
| Assert.assertEquals(3, values.size()); |
| |
| // read from time-range [2,999999) should return two entries |
| values = readStore(timeSeriesStore, "hello", 2L, 999999L); |
| Assert.assertEquals(2, values.size()); |
| |
| // read from time-range [3,4) should return no entries |
| values = readStore(timeSeriesStore, "hello", 3L, 4L); |
| Assert.assertEquals(0, values.size()); |
| } |
| |
| @Test |
| public void testGetWithNonExistentKeys() { |
| TimeSeriesStore<String, byte[]> timeSeriesStore = newTimeSeriesStore(new StringSerde("UTF-8"), true); |
| timeSeriesStore.put("hello", "world-1".getBytes(), 1L); |
| |
| // read from a non-existent key |
| List<TimestampedValue<byte[]>> values = readStore(timeSeriesStore, "non-existent-key", 0, Integer.MAX_VALUE); |
| Assert.assertEquals(0, values.size()); |
| |
| // read from an existing key but out of range timestamp |
| values = readStore(timeSeriesStore, "hello", 2, Integer.MAX_VALUE); |
| Assert.assertEquals(0, values.size()); |
| } |
| |
| @Test |
| public void testPutWithMultipleEntries() { |
| TimeSeriesStore<String, byte[]> timeSeriesStore = newTimeSeriesStore(new StringSerde("UTF-8"), true); |
| |
| // insert 100 entries at timestamps "1" and "2" |
| for (int i = 0; i < 100; i++) { |
| timeSeriesStore.put("hello", "world-1".getBytes(), 1L); |
| timeSeriesStore.put("hello", "world-2".getBytes(), 2L); |
| } |
| |
| // read from time-range [0,2) should return 100 entries |
| List<TimestampedValue<byte[]>> values = readStore(timeSeriesStore, "hello", 0L, 2L); |
| Assert.assertEquals(100, values.size()); |
| values.forEach(timeSeriesValue -> { |
| Assert.assertEquals("world-1", new String(timeSeriesValue.getValue())); |
| }); |
| |
| // read from time-range [2,4) should return 100 entries |
| values = readStore(timeSeriesStore, "hello", 2L, 4L); |
| Assert.assertEquals(100, values.size()); |
| values.forEach(timeSeriesValue -> { |
| Assert.assertEquals("world-2", new String(timeSeriesValue.getValue())); |
| }); |
| |
| // read all entries in the store |
| values = readStore(timeSeriesStore, "hello", 0L, Integer.MAX_VALUE); |
| Assert.assertEquals(200, values.size()); |
| } |
| |
| @Test |
| public void testGetOnTimestampBoundariesWithOverwriteMode() { |
| // instantiate a store in overwrite mode |
| TimeSeriesStore<String, byte[]> timeSeriesStore = newTimeSeriesStore(new StringSerde("UTF-8"), false); |
| |
| // insert an entry with key "hello" at timestamps "1" and "2" |
| timeSeriesStore.put("hello", "world-1".getBytes(), 1L); |
| timeSeriesStore.put("hello", "world-1".getBytes(), 2L); |
| timeSeriesStore.put("hello", "world-2".getBytes(), 2L); |
| |
| // read from time-range |
| List<TimestampedValue<byte[]>> values = readStore(timeSeriesStore, "hello", 0L, 1L); |
| Assert.assertEquals(0, values.size()); |
| |
| // read from time-range [1,2) should return one entry |
| values = readStore(timeSeriesStore, "hello", 1L, 2L); |
| Assert.assertEquals(1, values.size()); |
| Assert.assertEquals("world-1", new String(values.get(0).getValue())); |
| |
| // read from time-range [2,3) should return the most recent entry |
| values = readStore(timeSeriesStore, "hello", 2L, 3L); |
| Assert.assertEquals(1, values.size()); |
| Assert.assertEquals("world-2", new String(values.get(0).getValue())); |
| Assert.assertEquals(2L, values.get(0).getTimestamp()); |
| |
| // read from time-range [0,3) should return two entries |
| values = readStore(timeSeriesStore, "hello", 0L, 3L); |
| Assert.assertEquals(2, values.size()); |
| |
| // read from time-range [2,999999) should return one entry |
| values = readStore(timeSeriesStore, "hello", 2L, 999999L); |
| Assert.assertEquals(1, values.size()); |
| |
| // read from time-range [3,4) should return no entries |
| values = readStore(timeSeriesStore, "hello", 3L, 4L); |
| Assert.assertEquals(0, values.size()); |
| } |
| |
| @Test |
| public void testDeletesInOverwriteMode() { |
| // instantiate a store in overwrite mode |
| TimeSeriesStore<String, byte[]> timeSeriesStore = newTimeSeriesStore(new StringSerde("UTF-8"), false); |
| |
| // insert an entry with key "hello" at timestamps "1" and "2" |
| timeSeriesStore.put("hello", "world-1".getBytes(), 1L); |
| timeSeriesStore.put("hello", "world-1".getBytes(), 2L); |
| timeSeriesStore.put("hello", "world-2".getBytes(), 2L); |
| |
| List<TimestampedValue<byte[]>> values = readStore(timeSeriesStore, "hello", 1L, 3L); |
| Assert.assertEquals(2, values.size()); |
| |
| timeSeriesStore.remove("hello", 0L, 3L); |
| values = readStore(timeSeriesStore, "hello", 1L, 3L); |
| Assert.assertEquals(0, values.size()); |
| } |
| |
| private static <K, V> List<TimestampedValue<V>> readStore( |
| TimeSeriesStore<K, V> store, K key, long startTimestamp, long endTimestamp) { |
| List<TimestampedValue<V>> list = new ArrayList<>(); |
| ClosableIterator<TimestampedValue<V>> storeValuesIterator = store.get(key, startTimestamp, endTimestamp); |
| |
| while (storeValuesIterator.hasNext()) { |
| TimestampedValue<V> next = storeValuesIterator.next(); |
| list.add(next); |
| } |
| |
| storeValuesIterator.close(); |
| return list; |
| } |
| |
| private static <K> TimeSeriesStore<K, byte[]> newTimeSeriesStore(Serde<K> keySerde, boolean appendMode) { |
| KeyValueStore<TimeSeriesKey<K>, byte[]> kvStore = |
| new TestInMemoryStore(new TimeSeriesKeySerde<>(keySerde), new ByteSerde()); |
| return new TimeSeriesStoreImpl<>(kvStore, appendMode); |
| } |
| } |