sashapolo commented on a change in pull request #605: URL: https://github.com/apache/ignite-3/pull/605#discussion_r794570356
########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/util/ConfigurationSerializationUtil.java ########## @@ -0,0 +1,409 @@ +/* + * 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.ignite.internal.configuration.util; + +import java.io.Serializable; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; + +/** + * Utility class to help serializing deserializing configuration values - primitives, strings, or arrays of primitives or strings. + */ +public class ConfigurationSerializationUtil { + private static final byte BOOLEAN = 1; + + private static final byte BYTE = 2; + + private static final byte SHORT = 3; + + private static final byte INT = 4; + + private static final byte LONG = 5; + + private static final byte CHAR = 6; + + private static final byte FLOAT = 7; + + private static final byte DOUBLE = 8; + + private static final byte STRING = 9; + + private static final byte ARRAY = (byte) 0x80; + private static final String[] EMPTY_STRING_ARRAY = new String[0]; + + /** + * Converts configuration value into a byte array. + * + * @param value Configuration values. + * @return Serialized value. + */ + public static byte[] toBytes(Serializable value) { + Objects.requireNonNull(value); + + int header = header(value.getClass()); + + switch (header) { + case BOOLEAN: + return new byte[]{BOOLEAN, (byte) ((boolean) value ? 1 : 0)}; + + case BYTE: + return new byte[]{BYTE, (byte) value}; + + case SHORT: + return allocateBuffer(3).put(SHORT).putShort((short) value).array(); + + case INT: + return allocateBuffer(5).put(INT).putInt((int) value).array(); + + case LONG: + return allocateBuffer(9).put(LONG).putLong((long) value).array(); + + case CHAR: + return allocateBuffer(3).put(CHAR).putChar((char) value).array(); + + case FLOAT: + return allocateBuffer(5).put(FLOAT).putFloat((float) value).array(); + + case DOUBLE: + return allocateBuffer(9).put(DOUBLE).putDouble((double) value).array(); + + case STRING: { + byte[] strBytes = ((String) value).getBytes(StandardCharsets.UTF_8); + + return allocateBuffer(1 + strBytes.length).put(STRING).put(strBytes).array(); + } + + case BOOLEAN | ARRAY: { + boolean[] booleans = (boolean[]) value; + + ByteBuffer buf = allocateBuffer(1 + booleans.length); + + buf.put((byte) (BOOLEAN | ARRAY)); + + for (boolean b : booleans) { + buf.put((byte) (b ? 1 : 0)); + } + + return buf.array(); + } + + case BYTE | ARRAY: { + byte[] bytes = (byte[]) value; + + return allocateBuffer(1 + bytes.length).put((byte) (BYTE | ARRAY)).put(bytes).array(); + } + + case SHORT | ARRAY: { + short[] shorts = (short[]) value; + + ByteBuffer buf = allocateBuffer(1 + 2 * shorts.length); + + buf.put((byte) (SHORT | ARRAY)); + + for (short s : shorts) { + buf.putShort(s); + } + + return buf.array(); + } + + case INT | ARRAY: { + int[] ints = (int[]) value; + + ByteBuffer buf = allocateBuffer(1 + 4 * ints.length); + + buf.put((byte) (INT | ARRAY)); + + for (int n : ints) { + buf.putInt(n); + } + + return buf.array(); + } + + case LONG | ARRAY: { + long[] longs = (long[]) value; + + ByteBuffer buf = allocateBuffer(1 + 8 * longs.length); + + buf.put((byte) (LONG | ARRAY)); + + for (long n : longs) { + buf.putLong(n); + } + + return buf.array(); + } + + case CHAR | ARRAY: { + char[] chars = (char[]) value; + + ByteBuffer buf = allocateBuffer(1 + 2 * chars.length); + + buf.put((byte) (CHAR | ARRAY)); + + for (char c : chars) { + buf.putChar(c); + } + + return buf.array(); + } + + case FLOAT | ARRAY: { + float[] floats = (float[]) value; + + ByteBuffer buf = allocateBuffer(1 + 4 * floats.length); + + buf.put((byte) (FLOAT | ARRAY)); + + for (float f : floats) { + buf.putFloat(f); + } + + return buf.array(); + } + + case DOUBLE | ARRAY: { + double[] doubles = (double[]) value; + + ByteBuffer buf = allocateBuffer(1 + 8 * doubles.length); + + buf.put((byte) (DOUBLE | ARRAY)); + + for (double d : doubles) { + buf.putDouble(d); + } + + return buf.array(); + } + + case STRING | ARRAY: { + String[] strings = (String[]) value; + + byte[][] strBytes = Arrays.stream(strings).map(s -> s.getBytes(StandardCharsets.UTF_8)).toArray(byte[][]::new); + + int totalSize = Arrays.stream(strBytes).mapToInt(bytes -> bytes.length).sum(); + + ByteBuffer buf = allocateBuffer(1 + 4 * strBytes.length + totalSize); + + buf.put((byte) (STRING | ARRAY)); + + for (int i = 0; i < strings.length; i++) { + buf.putInt(strings[i].length()); + + buf.put(strBytes[i]); + } + + return buf.array(); + } + + default: + throw new IllegalStateException(value.getClass().getName()); + } + } + + /** + * Converts byte array into a configuration value. + * + * @param bytes Serialized value. + * @return Deserialized configuration value. + */ + public static Serializable fromBytes(byte[] bytes) { + ByteBuffer buf = ByteBuffer.wrap(bytes); + + buf.order(ByteOrder.BIG_ENDIAN); + + byte header = buf.get(); + + switch (header) { + case BOOLEAN: + return buf.get() == 1; + + case BYTE: + return buf.get(); + + case SHORT: + return buf.getShort(); + + case INT: + return buf.getInt(); + + case LONG: + return buf.getLong(); + + case CHAR: + return buf.getChar(); + + case FLOAT: + return buf.getFloat(); + + case DOUBLE: + return buf.getDouble(); + + case STRING: + return new String(bytes, 1, bytes.length - 1, StandardCharsets.UTF_8); + + case BOOLEAN | ARRAY: { + boolean[] booleans = new boolean[bytes.length - 1]; + + for (int i = 0; i < booleans.length; i++) { + booleans[i] = buf.get() == 1; + } + + return booleans; + } + + case BYTE | ARRAY: + return Arrays.copyOfRange(bytes, 1, bytes.length); + + case SHORT | ARRAY: { + short[] shorts = new short[bytes.length / 2]; + + for (int i = 0; i < shorts.length; i++) { + shorts[i] = buf.getShort(); + } + + return shorts; + } + + case INT | ARRAY: { + int[] ints = new int[bytes.length / 4]; + + for (int i = 0; i < ints.length; i++) { + ints[i] = buf.getInt(); + } + + return ints; + } + + case LONG | ARRAY: { + long[] longs = new long[bytes.length / 8]; + + for (int i = 0; i < longs.length; i++) { + longs[i] = buf.getLong(); + } + + return longs; + } + + case CHAR | ARRAY: { + char[] chars = new char[bytes.length / 2]; + + for (int i = 0; i < chars.length; i++) { + chars[i] = buf.getChar(); + } + + return chars; + } + + case FLOAT | ARRAY: { + float[] floats = new float[bytes.length / 4]; + + for (int i = 0; i < floats.length; i++) { + floats[i] = buf.getFloat(); + } + + return floats; + } + + case DOUBLE | ARRAY: { + double[] doubles = new double[bytes.length / 8]; + + for (int i = 0; i < doubles.length; i++) { + doubles[i] = buf.getDouble(); + } + + return doubles; + } + + case STRING | ARRAY: { + List<String> res = new ArrayList<>(); + + int offset = 1; + + while (offset != bytes.length) { + int size = buf.getInt(offset); + + res.add(new String(bytes, offset + 4, size)); + + offset += 4 + size; + } + + return res.toArray(EMPTY_STRING_ARRAY); + } + + default: + throw new IllegalArgumentException(Arrays.toString(bytes)); + } + } + + private static ByteBuffer allocateBuffer(int size) { + ByteBuffer buf = ByteBuffer.allocate(size); Review comment: These methods can be chained, code will be a little bit shorter ########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/util/ConfigurationSerializationUtil.java ########## @@ -0,0 +1,409 @@ +/* + * 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.ignite.internal.configuration.util; + +import java.io.Serializable; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; + +/** + * Utility class to help serializing deserializing configuration values - primitives, strings, or arrays of primitives or strings. + */ +public class ConfigurationSerializationUtil { + private static final byte BOOLEAN = 1; + + private static final byte BYTE = 2; + + private static final byte SHORT = 3; + + private static final byte INT = 4; + + private static final byte LONG = 5; + + private static final byte CHAR = 6; + + private static final byte FLOAT = 7; + + private static final byte DOUBLE = 8; + + private static final byte STRING = 9; + + private static final byte ARRAY = (byte) 0x80; + private static final String[] EMPTY_STRING_ARRAY = new String[0]; + + /** + * Converts configuration value into a byte array. + * + * @param value Configuration values. + * @return Serialized value. + */ + public static byte[] toBytes(Serializable value) { + Objects.requireNonNull(value); + + int header = header(value.getClass()); + + switch (header) { + case BOOLEAN: + return new byte[]{BOOLEAN, (byte) ((boolean) value ? 1 : 0)}; + + case BYTE: + return new byte[]{BYTE, (byte) value}; + + case SHORT: + return allocateBuffer(3).put(SHORT).putShort((short) value).array(); + + case INT: + return allocateBuffer(5).put(INT).putInt((int) value).array(); + + case LONG: + return allocateBuffer(9).put(LONG).putLong((long) value).array(); + + case CHAR: + return allocateBuffer(3).put(CHAR).putChar((char) value).array(); + + case FLOAT: + return allocateBuffer(5).put(FLOAT).putFloat((float) value).array(); + + case DOUBLE: + return allocateBuffer(9).put(DOUBLE).putDouble((double) value).array(); + + case STRING: { + byte[] strBytes = ((String) value).getBytes(StandardCharsets.UTF_8); + + return allocateBuffer(1 + strBytes.length).put(STRING).put(strBytes).array(); + } + + case BOOLEAN | ARRAY: { + boolean[] booleans = (boolean[]) value; + + ByteBuffer buf = allocateBuffer(1 + booleans.length); + + buf.put((byte) (BOOLEAN | ARRAY)); + + for (boolean b : booleans) { + buf.put((byte) (b ? 1 : 0)); + } + + return buf.array(); + } + + case BYTE | ARRAY: { + byte[] bytes = (byte[]) value; + + return allocateBuffer(1 + bytes.length).put((byte) (BYTE | ARRAY)).put(bytes).array(); + } + + case SHORT | ARRAY: { + short[] shorts = (short[]) value; + + ByteBuffer buf = allocateBuffer(1 + 2 * shorts.length); + + buf.put((byte) (SHORT | ARRAY)); + + for (short s : shorts) { + buf.putShort(s); + } + + return buf.array(); + } + + case INT | ARRAY: { + int[] ints = (int[]) value; + + ByteBuffer buf = allocateBuffer(1 + 4 * ints.length); + + buf.put((byte) (INT | ARRAY)); + + for (int n : ints) { + buf.putInt(n); + } + + return buf.array(); + } + + case LONG | ARRAY: { + long[] longs = (long[]) value; + + ByteBuffer buf = allocateBuffer(1 + 8 * longs.length); + + buf.put((byte) (LONG | ARRAY)); + + for (long n : longs) { + buf.putLong(n); + } + + return buf.array(); + } + + case CHAR | ARRAY: { + char[] chars = (char[]) value; + + ByteBuffer buf = allocateBuffer(1 + 2 * chars.length); + + buf.put((byte) (CHAR | ARRAY)); + + for (char c : chars) { + buf.putChar(c); + } + + return buf.array(); + } + + case FLOAT | ARRAY: { + float[] floats = (float[]) value; + + ByteBuffer buf = allocateBuffer(1 + 4 * floats.length); + + buf.put((byte) (FLOAT | ARRAY)); + + for (float f : floats) { + buf.putFloat(f); + } + + return buf.array(); + } + + case DOUBLE | ARRAY: { + double[] doubles = (double[]) value; + + ByteBuffer buf = allocateBuffer(1 + 8 * doubles.length); + + buf.put((byte) (DOUBLE | ARRAY)); + + for (double d : doubles) { + buf.putDouble(d); + } + + return buf.array(); + } + + case STRING | ARRAY: { + String[] strings = (String[]) value; + + byte[][] strBytes = Arrays.stream(strings).map(s -> s.getBytes(StandardCharsets.UTF_8)).toArray(byte[][]::new); + + int totalSize = Arrays.stream(strBytes).mapToInt(bytes -> bytes.length).sum(); + + ByteBuffer buf = allocateBuffer(1 + 4 * strBytes.length + totalSize); + + buf.put((byte) (STRING | ARRAY)); + + for (int i = 0; i < strings.length; i++) { + buf.putInt(strings[i].length()); + + buf.put(strBytes[i]); + } + + return buf.array(); + } + + default: + throw new IllegalStateException(value.getClass().getName()); + } + } + + /** + * Converts byte array into a configuration value. + * + * @param bytes Serialized value. + * @return Deserialized configuration value. + */ + public static Serializable fromBytes(byte[] bytes) { Review comment: Why do you still need to return `Serializable`? ########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/util/ConfigurationSerializationUtil.java ########## @@ -0,0 +1,409 @@ +/* + * 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.ignite.internal.configuration.util; + +import java.io.Serializable; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; + +/** + * Utility class to help serializing deserializing configuration values - primitives, strings, or arrays of primitives or strings. + */ +public class ConfigurationSerializationUtil { + private static final byte BOOLEAN = 1; + + private static final byte BYTE = 2; + + private static final byte SHORT = 3; + + private static final byte INT = 4; + + private static final byte LONG = 5; + + private static final byte CHAR = 6; + + private static final byte FLOAT = 7; + + private static final byte DOUBLE = 8; + + private static final byte STRING = 9; + + private static final byte ARRAY = (byte) 0x80; + private static final String[] EMPTY_STRING_ARRAY = new String[0]; + + /** + * Converts configuration value into a byte array. Review comment: ```suggestion * Converts a configuration value into a byte array. ``` ########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/util/ConfigurationSerializationUtil.java ########## @@ -0,0 +1,409 @@ +/* + * 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.ignite.internal.configuration.util; + +import java.io.Serializable; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; + +/** + * Utility class to help serializing deserializing configuration values - primitives, strings, or arrays of primitives or strings. + */ +public class ConfigurationSerializationUtil { + private static final byte BOOLEAN = 1; + + private static final byte BYTE = 2; + + private static final byte SHORT = 3; + + private static final byte INT = 4; + + private static final byte LONG = 5; + + private static final byte CHAR = 6; + + private static final byte FLOAT = 7; + + private static final byte DOUBLE = 8; + + private static final byte STRING = 9; + + private static final byte ARRAY = (byte) 0x80; + private static final String[] EMPTY_STRING_ARRAY = new String[0]; + + /** + * Converts configuration value into a byte array. + * + * @param value Configuration values. + * @return Serialized value. + */ + public static byte[] toBytes(Serializable value) { + Objects.requireNonNull(value); + + int header = header(value.getClass()); + + switch (header) { + case BOOLEAN: + return new byte[]{BOOLEAN, (byte) ((boolean) value ? 1 : 0)}; + + case BYTE: + return new byte[]{BYTE, (byte) value}; + + case SHORT: + return allocateBuffer(3).put(SHORT).putShort((short) value).array(); + + case INT: + return allocateBuffer(5).put(INT).putInt((int) value).array(); + + case LONG: + return allocateBuffer(9).put(LONG).putLong((long) value).array(); + + case CHAR: + return allocateBuffer(3).put(CHAR).putChar((char) value).array(); + + case FLOAT: + return allocateBuffer(5).put(FLOAT).putFloat((float) value).array(); + + case DOUBLE: + return allocateBuffer(9).put(DOUBLE).putDouble((double) value).array(); + + case STRING: { + byte[] strBytes = ((String) value).getBytes(StandardCharsets.UTF_8); + + return allocateBuffer(1 + strBytes.length).put(STRING).put(strBytes).array(); + } + + case BOOLEAN | ARRAY: { + boolean[] booleans = (boolean[]) value; + + ByteBuffer buf = allocateBuffer(1 + booleans.length); + + buf.put((byte) (BOOLEAN | ARRAY)); + + for (boolean b : booleans) { + buf.put((byte) (b ? 1 : 0)); + } + + return buf.array(); + } + + case BYTE | ARRAY: { + byte[] bytes = (byte[]) value; + + return allocateBuffer(1 + bytes.length).put((byte) (BYTE | ARRAY)).put(bytes).array(); + } + + case SHORT | ARRAY: { + short[] shorts = (short[]) value; + + ByteBuffer buf = allocateBuffer(1 + 2 * shorts.length); + + buf.put((byte) (SHORT | ARRAY)); + + for (short s : shorts) { + buf.putShort(s); + } + + return buf.array(); + } + + case INT | ARRAY: { + int[] ints = (int[]) value; + + ByteBuffer buf = allocateBuffer(1 + 4 * ints.length); + + buf.put((byte) (INT | ARRAY)); + + for (int n : ints) { + buf.putInt(n); + } + + return buf.array(); + } + + case LONG | ARRAY: { + long[] longs = (long[]) value; + + ByteBuffer buf = allocateBuffer(1 + 8 * longs.length); + + buf.put((byte) (LONG | ARRAY)); + + for (long n : longs) { + buf.putLong(n); + } + + return buf.array(); + } + + case CHAR | ARRAY: { + char[] chars = (char[]) value; + + ByteBuffer buf = allocateBuffer(1 + 2 * chars.length); + + buf.put((byte) (CHAR | ARRAY)); + + for (char c : chars) { + buf.putChar(c); + } + + return buf.array(); + } + + case FLOAT | ARRAY: { + float[] floats = (float[]) value; + + ByteBuffer buf = allocateBuffer(1 + 4 * floats.length); + + buf.put((byte) (FLOAT | ARRAY)); + + for (float f : floats) { + buf.putFloat(f); + } + + return buf.array(); + } + + case DOUBLE | ARRAY: { + double[] doubles = (double[]) value; + + ByteBuffer buf = allocateBuffer(1 + 8 * doubles.length); + + buf.put((byte) (DOUBLE | ARRAY)); + + for (double d : doubles) { + buf.putDouble(d); + } + + return buf.array(); + } + + case STRING | ARRAY: { + String[] strings = (String[]) value; + + byte[][] strBytes = Arrays.stream(strings).map(s -> s.getBytes(StandardCharsets.UTF_8)).toArray(byte[][]::new); + + int totalSize = Arrays.stream(strBytes).mapToInt(bytes -> bytes.length).sum(); + + ByteBuffer buf = allocateBuffer(1 + 4 * strBytes.length + totalSize); + + buf.put((byte) (STRING | ARRAY)); + + for (int i = 0; i < strings.length; i++) { + buf.putInt(strings[i].length()); + + buf.put(strBytes[i]); + } + + return buf.array(); + } + + default: + throw new IllegalStateException(value.getClass().getName()); + } + } + + /** + * Converts byte array into a configuration value. Review comment: ```suggestion * Converts a byte array into a configuration value. ``` ########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/util/ConfigurationSerializationUtil.java ########## @@ -0,0 +1,409 @@ +/* + * 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.ignite.internal.configuration.util; + +import java.io.Serializable; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; + +/** + * Utility class to help serializing deserializing configuration values - primitives, strings, or arrays of primitives or strings. + */ +public class ConfigurationSerializationUtil { + private static final byte BOOLEAN = 1; + + private static final byte BYTE = 2; + + private static final byte SHORT = 3; + + private static final byte INT = 4; + + private static final byte LONG = 5; + + private static final byte CHAR = 6; + + private static final byte FLOAT = 7; + + private static final byte DOUBLE = 8; + + private static final byte STRING = 9; + + private static final byte ARRAY = (byte) 0x80; + private static final String[] EMPTY_STRING_ARRAY = new String[0]; Review comment: ```suggestion private static final String[] EMPTY_STRING_ARRAY = new String[0]; ``` ########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/util/ConfigurationSerializationUtil.java ########## @@ -0,0 +1,409 @@ +/* + * 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.ignite.internal.configuration.util; + +import java.io.Serializable; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; + +/** + * Utility class to help serializing deserializing configuration values - primitives, strings, or arrays of primitives or strings. + */ +public class ConfigurationSerializationUtil { + private static final byte BOOLEAN = 1; + + private static final byte BYTE = 2; + + private static final byte SHORT = 3; + + private static final byte INT = 4; + + private static final byte LONG = 5; + + private static final byte CHAR = 6; + + private static final byte FLOAT = 7; + + private static final byte DOUBLE = 8; + + private static final byte STRING = 9; + + private static final byte ARRAY = (byte) 0x80; + private static final String[] EMPTY_STRING_ARRAY = new String[0]; + + /** + * Converts configuration value into a byte array. + * + * @param value Configuration values. + * @return Serialized value. + */ + public static byte[] toBytes(Serializable value) { + Objects.requireNonNull(value); + + int header = header(value.getClass()); + + switch (header) { + case BOOLEAN: + return new byte[]{BOOLEAN, (byte) ((boolean) value ? 1 : 0)}; + + case BYTE: + return new byte[]{BYTE, (byte) value}; + + case SHORT: + return allocateBuffer(3).put(SHORT).putShort((short) value).array(); Review comment: I would suggest using `SHORT.BYTES + 1` and similar constants ########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/util/ConfigurationSerializationUtil.java ########## @@ -0,0 +1,409 @@ +/* + * 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.ignite.internal.configuration.util; + +import java.io.Serializable; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; + +/** + * Utility class to help serializing deserializing configuration values - primitives, strings, or arrays of primitives or strings. + */ +public class ConfigurationSerializationUtil { + private static final byte BOOLEAN = 1; + + private static final byte BYTE = 2; + + private static final byte SHORT = 3; + + private static final byte INT = 4; + + private static final byte LONG = 5; + + private static final byte CHAR = 6; + + private static final byte FLOAT = 7; + + private static final byte DOUBLE = 8; + + private static final byte STRING = 9; + + private static final byte ARRAY = (byte) 0x80; + private static final String[] EMPTY_STRING_ARRAY = new String[0]; + + /** + * Converts configuration value into a byte array. + * + * @param value Configuration values. + * @return Serialized value. + */ + public static byte[] toBytes(Serializable value) { Review comment: why `Serializable`? -- This is an automated message from the Apache Git Service. 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