| /* |
| * 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.jackrabbit.oak.index.indexer.document.flatfile.pipelined; |
| |
| import org.junit.Test; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertThrows; |
| import static org.junit.Assert.assertTrue; |
| |
| public class NodeStateEntryBatchTest { |
| |
| @Test |
| public void testMaximumNumberOfEntries() { |
| NodeStateEntryBatch batch = NodeStateEntryBatch.createNodeStateEntryBatch(NodeStateEntryBatch.MIN_BUFFER_SIZE, 2); |
| assertFalse(batch.isAtMaxEntries()); |
| batch.addEntry("a", new byte[1]); |
| assertFalse(batch.isAtMaxEntries()); |
| batch.addEntry("b", new byte[1]); |
| assertEquals(2, batch.numberOfEntries()); |
| assertTrue(batch.isAtMaxEntries()); |
| assertThrows(NodeStateEntryBatch.BufferFullException.class, () -> batch.addEntry("c", new byte[1])); |
| } |
| |
| @Test |
| public void testMaximumBufferSize() { |
| NodeStateEntryBatch batch = NodeStateEntryBatch.createNodeStateEntryBatch(NodeStateEntryBatch.MIN_BUFFER_SIZE, 10); |
| int keySize = "a".getBytes(StandardCharsets.UTF_8).length; |
| batch.addEntry("a", new byte[NodeStateEntryBatch.MIN_BUFFER_SIZE - 4 - 4 - keySize]); // Needs 4 bytes for the length of the path and of the entry data |
| assertThrows(NodeStateEntryBatch.BufferFullException.class, () -> batch.addEntry("b", new byte[NodeStateEntryBatch.MIN_BUFFER_SIZE])); |
| |
| assertEquals(NodeStateEntryBatch.MIN_BUFFER_SIZE, batch.sizeOfEntriesBytes()); |
| assertEquals(1, batch.numberOfEntries()); |
| assertThrows(NodeStateEntryBatch.BufferFullException.class, () -> batch.addEntry("b", new byte[1])); |
| } |
| |
| @Test |
| public void flipAndResetBuffer() { |
| NodeStateEntryBatch batch = NodeStateEntryBatch.createNodeStateEntryBatch(NodeStateEntryBatch.MIN_BUFFER_SIZE, 10); |
| int expectedBytesWrittenToBuffer = NodeStateEntryBatch.MIN_BUFFER_SIZE; |
| |
| String key = "a"; |
| int keyLength = "a".getBytes(StandardCharsets.UTF_8).length; |
| byte[] jsonNodeBytes = new byte[batch.capacity()-4-4-keyLength]; |
| for (int i = 0; i < jsonNodeBytes.length; i++) { |
| jsonNodeBytes[i] = (byte) (i % 127); |
| } |
| |
| int bytesWrittenToBuffer = batch.addEntry(key, jsonNodeBytes); |
| assertEquals(bytesWrittenToBuffer, expectedBytesWrittenToBuffer); |
| assertEquals(batch.getBuffer().position(), expectedBytesWrittenToBuffer); |
| |
| batch.flip(); |
| |
| ByteBuffer buffer = batch.getBuffer(); |
| assertEquals(buffer.position(), 0); |
| assertEquals(buffer.remaining(), expectedBytesWrittenToBuffer); |
| assertEquals(keyLength, buffer.getInt()); |
| byte[] keyBytes = new byte[keyLength]; |
| buffer.get(keyBytes); |
| assertEquals(key, new String(keyBytes, StandardCharsets.UTF_8)); |
| |
| int jsonLength = buffer.getInt(); |
| byte[] jsonBytes = new byte[jsonLength]; |
| buffer.get(jsonBytes); |
| assertEquals(buffer.position(), expectedBytesWrittenToBuffer); |
| assertArrayEquals(jsonNodeBytes, jsonBytes); |
| |
| batch.reset(); |
| |
| assertEquals(0, batch.numberOfEntries()); |
| assertEquals(0, batch.getBuffer().position()); |
| assertEquals(NodeStateEntryBatch.MIN_BUFFER_SIZE, batch.getBuffer().remaining()); |
| } |
| } |