mirror of
https://github.com/OpenHFT/Chronicle-Map.git
synced 2021-09-13 01:26:12 +00:00
1672 lines
72 KiB
Java
Executable File
1672 lines
72 KiB
Java
Executable File
/*
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* Copyright (C) 2015 higherfrequencytrading.com
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.openhft.chronicle.map;
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import net.openhft.chronicle.hash.ChronicleHashBuilder;
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import net.openhft.chronicle.hash.ChronicleHashInstanceBuilder;
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import net.openhft.chronicle.hash.impl.stage.entry.HashLookup;
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import net.openhft.chronicle.hash.replication.*;
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import net.openhft.chronicle.hash.serialization.*;
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import net.openhft.chronicle.hash.serialization.internal.MetaBytesWriter;
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import net.openhft.chronicle.hash.serialization.internal.MetaProvider;
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import net.openhft.chronicle.hash.serialization.internal.SerializationBuilder;
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import net.openhft.chronicle.map.replication.MapRemoteOperations;
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import net.openhft.chronicle.set.ChronicleSetBuilder;
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import net.openhft.lang.Maths;
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import net.openhft.lang.io.Bytes;
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import net.openhft.lang.io.BytesStore;
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import net.openhft.lang.io.DirectStore;
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import net.openhft.lang.io.NativeBytes;
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import net.openhft.lang.io.serialization.*;
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import net.openhft.lang.io.serialization.impl.AllocateInstanceObjectFactory;
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import net.openhft.lang.io.serialization.impl.NewInstanceObjectFactory;
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import net.openhft.lang.io.serialization.impl.VanillaBytesMarshallerFactory;
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import net.openhft.lang.model.Byteable;
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import net.openhft.lang.model.DataValueClasses;
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import net.openhft.lang.threadlocal.Provider;
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import net.openhft.lang.threadlocal.ThreadLocalCopies;
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import org.jetbrains.annotations.NotNull;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.*;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.net.InetSocketAddress;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Objects;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicBoolean;
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import static java.lang.Math.ceil;
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import static java.lang.Math.round;
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import static net.openhft.chronicle.hash.impl.util.Objects.builderEquals;
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import static net.openhft.chronicle.map.DefaultSpi.mapEntryOperations;
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import static net.openhft.chronicle.map.DefaultSpi.mapRemoteOperations;
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import static net.openhft.lang.model.DataValueGenerator.firstPrimitiveFieldType;
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/**
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* {@code ChronicleMapBuilder} manages {@link ChronicleMap} configurations; could be used as a
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* classic builder and/or factory. This means that in addition to the standard builder usage
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* pattern: <pre>{@code
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* ChronicleMap<Key, Value> map = ChronicleMapOnHeapUpdatableBuilder
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* .of(Key.class, Value.class)
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* .entries(100500)
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* // ... other configurations
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* .create();}</pre>
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* it could be prepared and used to create many similar maps: <pre>{@code
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* ChronicleMapBuilder<Key, Value> builder = ChronicleMapBuilder
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* .of(Key.class, Value.class)
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* .entries(100500);
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*
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* ChronicleMap<Key, Value> map1 = builder.create();
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* ChronicleMap<Key, Value> map2 = builder.create();}</pre>
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* i. e. created {@code ChronicleMap} instances don't depend on the builder.
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*
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* <p>{@code ChronicleMapBuilder} is mutable, see a note in {@link ChronicleHashBuilder} interface
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* documentation.
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*
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* <p>Later in this documentation, "ChronicleMap" means "ChronicleMaps, created by {@code
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* ChronicleMapBuilder}", unless specified different, because theoretically someone might provide
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* {@code ChronicleMap} implementations with completely different properties.
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*
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* <p>{@code ChronicleMap} ("ChronicleMaps, created by {@code ChronicleMapBuilder}") currently
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* doesn't support resizing. That is why you <i>must</i> configure {@linkplain #entries(long) number
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* of entries} you are going to insert into the created map <i>at most</i>. See {@link
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* #entries(long)} method documentation for more information on this.
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*
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* <p>If you key or value type is not constantly sized and known to {@code ChronicleHashBuilder}, i.
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* e. it is not a boxed primitive, data value generated interface, {@link Byteable}, etc. (see the
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* complete list TODO insert the link to the complete list), you <i>must</i> provide the {@code
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* ChronicleHashBuilder} with some information about you keys or values: if they are
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* constantly-sized, call {@link #constantKeySizeBySample(Object)}, otherwise {@link
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* ChronicleHashBuilder#averageKeySize(double)} method, accordingly for values.
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*
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* @param <K> key type of the maps, produced by this builder
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* @param <V> value type of the maps, produced by this builder
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* @see ChronicleMap
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* @see ChronicleSetBuilder
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*/
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public final class ChronicleMapBuilder<K, V> implements
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ChronicleHashBuilder<K, ChronicleMap<K, V>, ChronicleMapBuilder<K, V>>,
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MapBuilder<ChronicleMapBuilder<K, V>>, Serializable {
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static final byte UDP_REPLICATION_MODIFICATION_ITERATOR_ID = (byte) 127;
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private static final int DEFAULT_KEY_OR_VALUE_SIZE = 120;
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private static final long DEFAULT_ENTRIES = 1 << 20;
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private static final int MAX_SEGMENTS = (1 << 30);
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private static final Logger LOG =
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LoggerFactory.getLogger(ChronicleMapBuilder.class.getName());
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private static final StringBuilder EMPTY_STRING_BUILDER = new StringBuilder();
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private static final double UNDEFINED_DOUBLE_CONFIG = Double.NaN;
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private static final int XML_SERIALIZATION = 1;
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private static final int BINARY_SERIALIZATION = 2;
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static final long RUNTIME_PAGE_SIZE = (long) NativeBytes.UNSAFE.pageSize();
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private static boolean isDefined(double config) {
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return !Double.isNaN(config);
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}
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private static final boolean strictStateChecks =
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Boolean.getBoolean("chronicle.strictStateChecks");
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SerializationBuilder<K> keyBuilder;
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SerializationBuilder<V> valueBuilder;
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// used when configuring the number of segments.
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private int minSegments = -1;
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private int actualSegments = -1;
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// used when reading the number of entries per
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private long entriesPerSegment = -1L;
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private long actualChunksPerSegment = -1L;
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private double averageKeySize = UNDEFINED_DOUBLE_CONFIG;
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private K averageKey;
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private K sampleKey;
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private double averageValueSize = UNDEFINED_DOUBLE_CONFIG;
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private V averageValue;
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private V sampleValue;
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private int actualChunkSize = 0;
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private int maxChunksPerEntry = -1;
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private Alignment alignment = null;
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private long entries = -1L;
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private long lockTimeOut = 20000L;
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private TimeUnit lockTimeOutUnit = TimeUnit.MILLISECONDS;
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private int metaDataBytes = 0;
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private boolean putReturnsNull = false;
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private boolean removeReturnsNull = false;
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// replication
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private TimeProvider timeProvider = TimeProvider.SYSTEM;
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private BytesMarshallerFactory bytesMarshallerFactory;
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private ObjectSerializer objectSerializer;
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private V defaultValue = null;
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private ConstantValueProvider<V> constantValueProvider = null;
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DefaultValueProvider<K, V> defaultValueProvider = DefaultSpi.defaultValueProvider();
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private SingleChronicleHashReplication singleHashReplication = null;
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private InetSocketAddress[] pushToAddresses;
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MapMethods<K, V, ?> methods = DefaultSpi.mapMethods();
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MapEntryOperations<K, V, ?> entryOperations = mapEntryOperations();
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MapRemoteOperations<K, V, ?> remoteOperations = mapRemoteOperations();
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ChronicleMapBuilder(Class<K> keyClass, Class<V> valueClass) {
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keyBuilder = new SerializationBuilder<>(keyClass, SerializationBuilder.Role.KEY);
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valueBuilder = new SerializationBuilder<>(valueClass, SerializationBuilder.Role.VALUE);
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if (CharSequence.class == valueClass)
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defaultValue = (V) "";
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if (StringBuilder.class == valueClass)
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defaultValue = (V) EMPTY_STRING_BUILDER;
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}
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/**
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* Returns a new {@code ChronicleMapBuilder} instance which is able to {@linkplain #create()
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* create} maps with the specified key and value classes.
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*
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* @param keyClass class object used to infer key type and discover it's properties via
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* reflection
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* @param valueClass class object used to infer value type and discover it's properties via
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* reflection
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* @param <K> key type of the maps, created by the returned builder
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* @param <V> value type of the maps, created by the returned builder
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* @return a new builder for the given key and value classes
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*/
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public static <K, V> ChronicleMapBuilder<K, V> of(
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@NotNull Class<K> keyClass, @NotNull Class<V> valueClass) {
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return new ChronicleMapBuilder<>(keyClass, valueClass);
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}
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public static <K, V> ChronicleMapStatelessClientBuilder<K, V> of(
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@NotNull Class<K> keyClass, @NotNull Class<V> valueClass, InetSocketAddress socketAddress) {
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return ChronicleMapStatelessClientBuilder.of(socketAddress);
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}
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private static long roundUpMapHeaderSize(long headerSize) {
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long roundUp = (headerSize + 127L) & ~127L;
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if (roundUp - headerSize < 64)
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roundUp += 128;
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return roundUp;
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}
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private static void checkSegments(int segments) {
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if (segments <= 0 || segments > MAX_SEGMENTS)
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throw new IllegalArgumentException("segments should be positive, " +
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segments + " given");
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if (segments > MAX_SEGMENTS)
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throw new IllegalArgumentException("Max segments is " + MAX_SEGMENTS + ", " +
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segments + " given");
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}
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private static long divideUpper(long dividend, long divisor) {
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return ((dividend - 1L) / divisor) + 1L;
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}
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private static String pretty(int value) {
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return value > 0 ? value + "" : "not configured";
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}
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private static String pretty(Object obj) {
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return obj != null ? obj + "" : "not configured";
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}
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public ChronicleMapBuilder<K, V> pushTo(InetSocketAddress... addresses) {
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this.pushToAddresses = addresses;
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return this;
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}
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@Override
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public ChronicleMapBuilder<K, V> clone() {
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try {
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@SuppressWarnings("unchecked")
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ChronicleMapBuilder<K, V> result =
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(ChronicleMapBuilder<K, V>) super.clone();
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result.keyBuilder = keyBuilder.clone();
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result.valueBuilder = valueBuilder.clone();
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return result;
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} catch (CloneNotSupportedException e) {
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throw new AssertionError(e);
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}
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}
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/**
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* {@inheritDoc}
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*
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* <p>Example: if keys in your map(s) are English words in {@link String} form, average English
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* word length is 5.1, configure average key size of 6: <pre>{@code
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* ChronicleMap<String, LongValue> wordFrequencies = ChronicleMapBuilder
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* .of(String.class, LongValue.class)
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* .entries(50000)
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* .averageKeySize(6)
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* .create();}</pre>
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* (Note that 6 is chosen as average key size in bytes despite strings in Java are UTF-16
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* encoded (and each character takes 2 bytes on-heap), because default off-heap {@link String}
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* encoding is UTF-8 in {@code ChronicleMap}.)
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*
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* @param averageKeySize the average size of the key
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* @throws IllegalStateException {@inheritDoc}
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* @throws IllegalArgumentException {@inheritDoc}
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* @see #averageKey(Object)
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* @see #constantKeySizeBySample(Object)
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* @see #averageValueSize(double)
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* @see #actualChunkSize(int)
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*/
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@Override
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public ChronicleMapBuilder<K, V> averageKeySize(double averageKeySize) {
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checkSizeIsNotStaticallyKnown(keyBuilder);
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checkAverageSize(averageKeySize, "key");
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this.averageKeySize = averageKeySize;
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averageKey = null;
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sampleKey = null;
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return this;
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}
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/**
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* {@inheritDoc}
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*
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* @param averageKey the average (by footprint in serialized form) key, is going to be put
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* into the hash containers, created by this builder
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* @throws NullPointerException {@inheritDoc}
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* @see #averageKeySize(double)
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* @see #constantKeySizeBySample(Object)
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* @see #averageValue(Object)
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* @see #actualChunkSize(int)
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*/
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@Override
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public ChronicleMapBuilder<K, V> averageKey(K averageKey) {
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checkSizeIsNotStaticallyKnown(keyBuilder);
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this.averageKey = averageKey;
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sampleKey = null;
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averageKeySize = UNDEFINED_DOUBLE_CONFIG;
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return this;
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}
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/**
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* {@inheritDoc}
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*
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* <p>For example, if your keys are Git commit hashes:<pre>{@code
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* Map<byte[], String> gitCommitMessagesByHash =
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* ChronicleMapBuilder.of(byte[].class, String.class)
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* .constantKeySizeBySample(new byte[20])
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* .immutableKeys()
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* .create();}</pre>
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*
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* @see #averageKeySize(double)
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* @see #averageKey(Object)
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* @see #constantValueSizeBySample(Object)
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*/
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@Override
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public ChronicleMapBuilder<K, V> constantKeySizeBySample(K sampleKey) {
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this.sampleKey = sampleKey;
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averageKey = null;
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averageKeySize = UNDEFINED_DOUBLE_CONFIG;
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return this;
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}
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private double averageKeySize() {
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if (!isDefined(averageKeySize))
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throw new AssertionError();
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return averageKeySize;
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}
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/**
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* Configures the average number of bytes, taken by serialized form of values, put into maps,
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* created by this builder. However, in many cases {@link #averageValue(Object)} might be easier
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* to use and more reliable. If value size is always the same, call {@link
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* #constantValueSizeBySample(Object)} method instead of this one.
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*
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* <p>{@code ChronicleHashBuilder} implementation heuristically chooses {@linkplain
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* #actualChunkSize(int) the actual chunk size} based on this configuration and the key size,
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* that, however, might result to quite high internal fragmentation, i. e. losses because only
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* integral number of chunks could be allocated for the entry. If you want to avoid this, you
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* should manually configure the actual chunk size in addition to this average value size
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* configuration, which is anyway needed.
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*
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* <p>If values are of boxed primitive type or {@link Byteable} subclass, i. e. if value size is
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* known statically, it is automatically accounted and shouldn't be specified by user.
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*
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* <p>Calling this method clears any previous {@link #constantValueSizeBySample(Object)} and
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* {@link #averageValue(Object)} configurations.
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*
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* @param averageValueSize number of bytes, taken by serialized form of values
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* @return this builder back
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* @throws IllegalStateException if value size is known statically and shouldn't be
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* configured by user
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* @throws IllegalArgumentException if the given {@code averageValueSize} is non-positive
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* @see #averageValue(Object)
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* @see #constantValueSizeBySample(Object)
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* @see #averageKeySize(double)
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* @see #actualChunkSize(int)
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*/
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public ChronicleMapBuilder<K, V> averageValueSize(double averageValueSize) {
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checkSizeIsNotStaticallyKnown(valueBuilder);
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checkAverageSize(averageValueSize, "value");
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this.averageValueSize = averageValueSize;
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averageValue = null;
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sampleValue = null;
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return this;
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}
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/**
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* Configures the average number of bytes, taken by serialized form of values, put into maps,
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* created by this builder, by serializing the given {@code averageValue} using the configured
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* {@link #valueMarshallers(BytesWriter, BytesReader) value marshallers}. In some cases, {@link
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* #averageValueSize(double)} might be easier to use, than constructing the "average value".
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* If value size is always the same, call {@link #constantValueSizeBySample(Object)} method
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* instead of this one.
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*
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* <p>Example: If you
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*
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* <p>{@code ChronicleHashBuilder} implementation heuristically chooses {@linkplain
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* #actualChunkSize(int) the actual chunk size} based on this configuration and the key size,
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* that, however, might result to quite high internal fragmentation, i. e. losses because only
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* integral number of chunks could be allocated for the entry. If you want to avoid this, you
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* should manually configure the actual chunk size in addition to this average value size
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* configuration, which is anyway needed.
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*
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* <p>If values are of boxed primitive type or {@link Byteable} subclass, i. e. if value size is
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* known statically, it is automatically accounted and shouldn't be specified by user.
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*
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* <p>Calling this method clears any previous {@link #constantValueSizeBySample(Object)}
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* and {@link #averageValueSize(double)} configurations.
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*
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* @param averageValue the average (by footprint in serialized form) value, is going to be put
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* into the maps, created by this builder
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* @return this builder back
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* @throws NullPointerException if the given {@code averageValue} is {@code null}
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* @see #averageValueSize(double)
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* @see #constantValueSizeBySample(Object)
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* @see #averageKey(Object)
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* @see #actualChunkSize(int)
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*/
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public ChronicleMapBuilder<K, V> averageValue(V averageValue) {
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Objects.requireNonNull(averageValue);
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checkSizeIsNotStaticallyKnown(valueBuilder);
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this.averageValue = averageValue;
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sampleValue = null;
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averageValueSize = UNDEFINED_DOUBLE_CONFIG;
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return this;
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}
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private static void checkAverageSize(double averageSize, String role) {
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if (averageSize <= 0 || Double.isNaN(averageSize) ||
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Double.isInfinite(averageSize)) {
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throw new IllegalArgumentException("Average " + role + " size must be a positive, " +
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"finite number");
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}
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}
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private static void checkSizeIsNotStaticallyKnown(SerializationBuilder builder) {
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if (builder.sizeIsStaticallyKnown)
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throw new IllegalStateException("Size of type " + builder.eClass +
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" is statically known and shouldn't be specified manually");
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}
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/**
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* Configures the constant number of bytes, taken by serialized form of values, put into maps,
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* created by this builder. This is done by providing the {@code sampleValue}, all values should
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* take the same number of bytes in serialized form, as this sample object.
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*
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* <p>If values are of boxed primitive type or {@link Byteable} subclass, i. e. if value size is
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* known statically, it is automatically accounted and this method shouldn't be called.
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*
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* <p>If value size varies, method {@link #averageValue(Object)} or {@link
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* #averageValueSize(double)} should be called instead of this one.
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*
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* <p>Calling this method clears any previous {@link #averageValue(Object)} and
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* {@link #averageValueSize(double)} configurations.
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*
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* @param sampleValue the sample value
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* @return this builder back
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* @see #averageValueSize(double)
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* @see #averageValue(Object)
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* @see #constantKeySizeBySample(Object)
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*/
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public ChronicleMapBuilder<K, V> constantValueSizeBySample(V sampleValue) {
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this.sampleValue = sampleValue;
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averageValue = null;
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averageValueSize = UNDEFINED_DOUBLE_CONFIG;
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return this;
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}
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double averageValueSize() {
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if (!isDefined(averageValueSize))
|
|
throw new AssertionError();
|
|
return averageValueSize;
|
|
}
|
|
|
|
private <E> double averageKeyOrValueSize(
|
|
double configuredSize, SerializationBuilder<E> builder, E average) {
|
|
if (isDefined(configuredSize))
|
|
return configuredSize;
|
|
if (builder.constantSizeMarshaller())
|
|
return builder.pseudoReadConstantSize();
|
|
if (average != null) {
|
|
builder.maxSize(DEFAULT_KEY_OR_VALUE_SIZE);
|
|
return builder.serializationSize(average);
|
|
}
|
|
return DEFAULT_KEY_OR_VALUE_SIZE;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*
|
|
* @throws IllegalStateException is sizes of both keys and values of maps created by this
|
|
* builder are constant, hence chunk size shouldn't be configured
|
|
* by user
|
|
* @see #entryAndValueAlignment(Alignment)
|
|
* @see #entries(long)
|
|
* @see #maxChunksPerEntry(int)
|
|
*/
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> actualChunkSize(int actualChunkSize) {
|
|
if (constantlySizedEntries()) {
|
|
throw new IllegalStateException("Sizes of key type: " + keyBuilder.eClass + " and " +
|
|
"value type: " + valueBuilder.eClass + " are both constant, " +
|
|
"so chunk size shouldn't be specified manually");
|
|
}
|
|
if (actualChunkSize <= 0)
|
|
throw new IllegalArgumentException("Chunk size must be positive");
|
|
this.actualChunkSize = actualChunkSize;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @deprecated part of private API, shouldn't be used in the client code
|
|
*/
|
|
@Deprecated
|
|
public SerializationBuilder<K> keyBuilder() {
|
|
return keyBuilder;
|
|
}
|
|
|
|
static class EntrySizeInfo {
|
|
final double averageEntrySize;
|
|
final int worstAlignment;
|
|
|
|
public EntrySizeInfo(double averageEntrySize, int worstAlignment) {
|
|
this.averageEntrySize = averageEntrySize;
|
|
this.worstAlignment = worstAlignment;
|
|
}
|
|
}
|
|
|
|
private EntrySizeInfo entrySizeInfo(boolean replicated) {
|
|
double size = metaDataBytes;
|
|
double keySize = averageKeySize();
|
|
size += averageSizeEncodingSize(keyBuilder, keySize);
|
|
size += keySize;
|
|
if (replicated)
|
|
size += ReplicatedChronicleMap.ADDITIONAL_ENTRY_BYTES;
|
|
double valueSize = averageValueSize();
|
|
size += averageSizeEncodingSize(valueBuilder, valueSize);
|
|
Alignment alignment = valueAlignment();
|
|
int worstAlignment;
|
|
if (alignment != Alignment.NO_ALIGNMENT &&
|
|
constantlySizedKeys() && valueBuilder.constantSizeEncodingSizeMarshaller()) {
|
|
long constantSizeBeforeAlignment = round(size);
|
|
if (constantlySizedValues()) {
|
|
// see segmentEntrySpaceInnerOffset()
|
|
long totalDataSize = constantSizeBeforeAlignment + constantValueSize();
|
|
worstAlignment = (int) (alignment.alignAddr(totalDataSize) - totalDataSize);
|
|
} else {
|
|
determineAlignment:
|
|
if (actualChunkSize > 0) {
|
|
worstAlignment = worstAlignmentAssumingChunkSize(constantSizeBeforeAlignment,
|
|
actualChunkSize);
|
|
} else {
|
|
int chunkSize = 8;
|
|
worstAlignment = worstAlignmentAssumingChunkSize(
|
|
constantSizeBeforeAlignment, chunkSize);
|
|
if (size + worstAlignment + valueSize >=
|
|
maxDefaultChunksPerAverageEntry(replicated) * chunkSize) {
|
|
break determineAlignment;
|
|
}
|
|
chunkSize = 4;
|
|
worstAlignment = worstAlignmentAssumingChunkSize(
|
|
constantSizeBeforeAlignment, chunkSize);
|
|
}
|
|
}
|
|
} else {
|
|
// assume worst case, we always lose most possible bytes for alignment
|
|
worstAlignment = alignment.alignment() - 1;
|
|
}
|
|
size += worstAlignment;
|
|
size += valueSize;
|
|
return new EntrySizeInfo(size, worstAlignment);
|
|
}
|
|
|
|
/**
|
|
* @deprecated part of private API, shouldn't be used in the client code
|
|
*/
|
|
@Deprecated
|
|
public int segmentEntrySpaceInnerOffset(boolean replicated) {
|
|
// This is needed, if chunkSize = constant entry size is not aligned, for entry alignment
|
|
// to be always the same, we should _misalign_ the first chunk.
|
|
if (!constantlySizedEntries())
|
|
return 0;
|
|
return (int) (constantValueSize() % valueAlignment().alignment());
|
|
}
|
|
|
|
private long constantValueSize() {
|
|
return valueBuilder.pseudoReadConstantSize();
|
|
}
|
|
|
|
private boolean constantlySizedKeys() {
|
|
return keyBuilder.constantSizeMarshaller();
|
|
}
|
|
|
|
private static double averageSizeEncodingSize(
|
|
SerializationBuilder builder, double averageSize) {
|
|
SizeMarshaller sizeMarshaller = builder.sizeMarshaller();
|
|
if (averageSize == round(averageSize))
|
|
return sizeMarshaller.sizeEncodingSize(round(averageSize));
|
|
long lower = (long) averageSize;
|
|
long upper = lower + 1;
|
|
int lowerEncodingSize = sizeMarshaller.sizeEncodingSize(lower);
|
|
int upperEncodingSize = sizeMarshaller.sizeEncodingSize(upper);
|
|
if (lowerEncodingSize == upperEncodingSize)
|
|
return lowerEncodingSize;
|
|
return lower * (upper - averageSize) + upper * (averageSize - lower);
|
|
}
|
|
|
|
private int worstAlignmentAssumingChunkSize(
|
|
long constantSizeBeforeAlignment, int chunkSize) {
|
|
Alignment valueAlignment = valueAlignment();
|
|
long firstAlignment = valueAlignment.alignAddr(constantSizeBeforeAlignment) -
|
|
constantSizeBeforeAlignment;
|
|
int alignment = valueAlignment.alignment();
|
|
int gcdOfAlignmentAndChunkSize = greatestCommonDivisor(alignment, chunkSize);
|
|
if (gcdOfAlignmentAndChunkSize == alignment)
|
|
return (int) firstAlignment;
|
|
// assume worst by now because we cannot predict alignment in VanillaCM.entrySize() method
|
|
// before allocation
|
|
long worstAlignment = firstAlignment;
|
|
while (worstAlignment + gcdOfAlignmentAndChunkSize < alignment)
|
|
worstAlignment += gcdOfAlignmentAndChunkSize;
|
|
return (int) worstAlignment;
|
|
}
|
|
|
|
int worstAlignment(boolean replicated) {
|
|
return entrySizeInfo(replicated).worstAlignment;
|
|
}
|
|
|
|
static int greatestCommonDivisor(int a, int b) {
|
|
if (b == 0) return a;
|
|
return greatestCommonDivisor(b, a % b);
|
|
}
|
|
|
|
/**
|
|
* @deprecated part of private API, shouldn't be used in the client code
|
|
*/
|
|
@Deprecated
|
|
public long chunkSize(boolean replicated) {
|
|
if (actualChunkSize > 0)
|
|
return actualChunkSize;
|
|
double averageEntrySize = entrySizeInfo(replicated).averageEntrySize;
|
|
if (constantlySizedEntries())
|
|
return round(averageEntrySize);
|
|
int maxChunkSize = 1 << 30;
|
|
for (long chunkSize = 4; chunkSize <= maxChunkSize; chunkSize *= 2L) {
|
|
if (maxDefaultChunksPerAverageEntry(replicated) * chunkSize > averageEntrySize)
|
|
return chunkSize;
|
|
}
|
|
return maxChunkSize;
|
|
}
|
|
|
|
boolean constantlySizedEntries() {
|
|
return constantlySizedKeys() && constantlySizedValues();
|
|
}
|
|
|
|
double averageChunksPerEntry(boolean replicated) {
|
|
if (constantlySizedEntries())
|
|
return 1.0;
|
|
@SuppressWarnings("deprecation")
|
|
long chunkSize = chunkSize(replicated);
|
|
// assuming we always has worst internal fragmentation. This affects total segment
|
|
// entry space which is allocated lazily on Linux (main target platform)
|
|
// so we can afford this
|
|
return (entrySizeInfo(replicated).averageEntrySize + chunkSize - 1) / chunkSize;
|
|
}
|
|
|
|
private static int maxDefaultChunksPerAverageEntry(boolean replicated) {
|
|
return replicated ? 4 : 8;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> maxChunksPerEntry(int maxChunksPerEntry) {
|
|
if (maxChunksPerEntry < 1)
|
|
throw new IllegalArgumentException("maxChunksPerEntry should be >= 1, " +
|
|
maxChunksPerEntry + " given");
|
|
this.maxChunksPerEntry = maxChunksPerEntry;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @deprecated part of private API, shouldn't be used in the client code
|
|
*/
|
|
@Deprecated
|
|
public int maxChunksPerEntry(boolean replicated) {
|
|
if (constantlySizedEntries())
|
|
return 1;
|
|
@SuppressWarnings("deprecation")
|
|
long actualChunksPerSegment = actualChunksPerSegment(replicated);
|
|
int result = (int) Math.min(actualChunksPerSegment, (long) Integer.MAX_VALUE);
|
|
if (this.maxChunksPerEntry > 0)
|
|
result = Math.min(this.maxChunksPerEntry, result);
|
|
return result;
|
|
}
|
|
|
|
private boolean constantlySizedValues() {
|
|
return valueBuilder.constantSizeMarshaller();
|
|
}
|
|
|
|
/**
|
|
* Configures alignment strategy of address in memory of entries and independently of address in
|
|
* memory of values within entries in ChronicleMaps, created by this builder.
|
|
*
|
|
* <p>Useful when values of the map are updated intensively, particularly fields with volatile
|
|
* access, because it doesn't work well if the value crosses cache lines. Also, on some
|
|
* (nowadays rare) architectures any misaligned memory access is more expensive than aligned.
|
|
*
|
|
* <p>If values couldn't reference off-heap memory (i. e. it is not {@link Byteable} or "data
|
|
* value generated"), alignment configuration makes no sense and forbidden.
|
|
*
|
|
* <p>Default is {@link Alignment#NO_ALIGNMENT} if values couldn't reference off-heap memory,
|
|
* otherwise chosen heuristically (configure explicitly for being sure and to compare
|
|
* performance in your case).
|
|
*
|
|
* @param alignment the new alignment of the maps constructed by this builder
|
|
* @return this {@code ChronicleMapOnHeapUpdatableBuilder} back
|
|
* @throws IllegalStateException if values of maps, created by this builder, couldn't reference
|
|
* off-heap memory
|
|
*/
|
|
public ChronicleMapBuilder<K, V> entryAndValueAlignment(Alignment alignment) {
|
|
this.alignment = alignment;
|
|
checkAlignmentOnlyIfValuesPossiblyReferenceOffHeap();
|
|
return this;
|
|
}
|
|
|
|
private void checkAlignmentOnlyIfValuesPossiblyReferenceOffHeap() {
|
|
if (!valueBuilder.possibleOffHeapReferences() &&
|
|
(alignment == Alignment.OF_4_BYTES || alignment == Alignment.OF_8_BYTES))
|
|
throw new IllegalStateException("Entry and value alignment should be configured only " +
|
|
"if values might point to off-heap memory");
|
|
}
|
|
|
|
Alignment valueAlignment() {
|
|
if (alignment != null)
|
|
return alignment;
|
|
Class firstPrimitiveFieldType = firstPrimitiveFieldType(valueBuilder.eClass);
|
|
if (firstPrimitiveFieldType == long.class || firstPrimitiveFieldType == double.class)
|
|
return Alignment.OF_8_BYTES;
|
|
if (firstPrimitiveFieldType == int.class || firstPrimitiveFieldType == float.class)
|
|
return Alignment.OF_4_BYTES;
|
|
return Alignment.NO_ALIGNMENT;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> entries(long entries) {
|
|
if (entries <= 0L)
|
|
throw new IllegalArgumentException("Entries should be positive, " + entries + " given");
|
|
this.entries = entries;
|
|
return this;
|
|
}
|
|
|
|
long entries() {
|
|
if (entries < 0)
|
|
return DEFAULT_ENTRIES;
|
|
return entries;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> entriesPerSegment(long entriesPerSegment) {
|
|
if (entriesPerSegment <= 0L)
|
|
throw new IllegalArgumentException("Entries per segment should be positive, " +
|
|
entriesPerSegment + " given");
|
|
this.entriesPerSegment = entriesPerSegment;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @deprecated part of private API, shouldn't be used in the client code
|
|
*/
|
|
@Deprecated
|
|
public long entriesPerSegment(boolean replicated) {
|
|
long entriesPerSegment;
|
|
if (this.entriesPerSegment > 0L) {
|
|
entriesPerSegment = this.entriesPerSegment;
|
|
} else {
|
|
@SuppressWarnings("deprecation")
|
|
int actualSegments = actualSegments(replicated);
|
|
long totalEntries = totalEntriesIfPoorDistribution(actualSegments);
|
|
entriesPerSegment = divideUpper(totalEntries, actualSegments);
|
|
}
|
|
if (actualChunksPerSegment > 0)
|
|
return entriesPerSegment;
|
|
double averageChunksPerEntry = averageChunksPerEntry(replicated);
|
|
if (entriesPerSegment * averageChunksPerEntry > HashLookup.MAX_SEGMENT_CHUNKS)
|
|
throw new IllegalStateException("Max chunks per segment is " +
|
|
HashLookup.MAX_SEGMENT_CHUNKS + " configured entries() and " +
|
|
"actualSegments() so that there should be " + entriesPerSegment +
|
|
" entries per segment, while average chunks per entry is " +
|
|
averageChunksPerEntry);
|
|
if (entriesPerSegment > HashLookup.MAX_SEGMENT_ENTRIES)
|
|
throw new IllegalStateException("shouldn't be more than " +
|
|
HashLookup.MAX_SEGMENT_ENTRIES + " entries per segment");
|
|
return entriesPerSegment;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> actualChunksPerSegment(long actualChunksPerSegment) {
|
|
if (actualChunksPerSegment <= 0)
|
|
throw new IllegalArgumentException("Actual chunks per segment should be positive, " +
|
|
actualChunksPerSegment + " given");
|
|
this.actualChunksPerSegment = actualChunksPerSegment;
|
|
return this;
|
|
}
|
|
|
|
private void checkActualChunksPerSegmentIsConfiguredOnlyIfOtherLowLevelConfigsAreManual() {
|
|
if (actualChunksPerSegment > 0) {
|
|
if (entriesPerSegment <= 0 || (actualChunkSize <= 0 && !constantlySizedEntries()) ||
|
|
actualSegments <= 0)
|
|
throw new IllegalStateException("Actual chunks per entry could be configured " +
|
|
"only if other three low level configs are manual: " +
|
|
"entriesPerSegment(), actualSegments() and actualChunkSize(), unless " +
|
|
"both keys and value sizes are constant");
|
|
}
|
|
}
|
|
|
|
private void checkActualChunksPerSegmentGreaterOrEqualToEntries() {
|
|
if (actualChunksPerSegment > 0 && entriesPerSegment > 0 &&
|
|
entriesPerSegment > actualChunksPerSegment) {
|
|
throw new IllegalStateException("Entries per segment couldn't be greater than " +
|
|
"actual chunks per segment. Entries: " + entriesPerSegment + ", " +
|
|
"chunks: " + actualChunksPerSegment + " is configured");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @deprecated part of private API, shouldn't be used in the client code
|
|
*/
|
|
@Deprecated
|
|
public long actualChunksPerSegment(boolean replicated) {
|
|
if (actualChunksPerSegment > 0)
|
|
return actualChunksPerSegment;
|
|
return chunksPerSegment(entriesPerSegment(replicated), replicated);
|
|
}
|
|
|
|
private long chunksPerSegment(long entriesPerSegment, boolean replicated) {
|
|
return round(entriesPerSegment * averageChunksPerEntry(replicated));
|
|
}
|
|
|
|
private long totalEntriesIfPoorDistribution(long segments) {
|
|
if (segments == 1)
|
|
return entries();
|
|
long entries = entries();
|
|
// check if the number of entries is small compared with the number of segments.
|
|
long s3 = Math.min(8, segments) * Math.min(32, segments) * Math.min(128, segments);
|
|
if (entries * 4 <= s3)
|
|
entries *= 1.8;
|
|
else if (entries <= s3)
|
|
entries *= 1.45;
|
|
else if (entries <= s3 * 4)
|
|
entries *= 1.33;
|
|
else if (entries <= s3 * 8)
|
|
entries *= 1.22;
|
|
else if (entries <= s3 * 16)
|
|
entries *= 1.15;
|
|
else
|
|
entries *= 1.1;
|
|
return Math.min(segments * entries(),
|
|
entries + 4 * segments + 8);
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> minSegments(int minSegments) {
|
|
checkSegments(minSegments);
|
|
this.minSegments = minSegments;
|
|
return this;
|
|
}
|
|
|
|
int minSegments() {
|
|
return Math.max(estimateSegments(), minSegments);
|
|
}
|
|
|
|
private int estimateSegments() {
|
|
return (int) Math.min(Maths.nextPower2(entries() / 32, 1), estimateSegmentsBasedOnSize());
|
|
}
|
|
|
|
//TODO reivew because this heuristic doesn't seem to perform well
|
|
private int estimateSegmentsBasedOnSize() {
|
|
// the idea is that if values are huge, operations on them (and simply ser/deser)
|
|
// could take long time, so we want more segment to minimize probablity that
|
|
// two or more concurrent write ops will go to the same segment, and then all but one of
|
|
// these threads will wait for long time.
|
|
int segmentsForEntries = estimateSegmentsForEntries(entries());
|
|
double averageValueSize = averageValueSize();
|
|
return averageValueSize >= 1000000
|
|
? segmentsForEntries * 16
|
|
: averageValueSize >= 100000
|
|
? segmentsForEntries * 8
|
|
: averageValueSize >= 10000
|
|
? segmentsForEntries * 4
|
|
: averageValueSize >= 1000
|
|
? segmentsForEntries * 2
|
|
: segmentsForEntries;
|
|
}
|
|
|
|
private static int estimateSegmentsForEntries(long size) {
|
|
if (size > 200 << 20)
|
|
return 256;
|
|
if (size >= 1 << 20)
|
|
return 128;
|
|
if (size >= 128 << 10)
|
|
return 64;
|
|
if (size >= 16 << 10)
|
|
return 32;
|
|
if (size >= 4 << 10)
|
|
return 16;
|
|
if (size >= 1 << 10)
|
|
return 8;
|
|
return 1;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> actualSegments(int actualSegments) {
|
|
checkSegments(actualSegments);
|
|
this.actualSegments = actualSegments;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @deprecated part of private API, shouldn't be used in the client code
|
|
*/
|
|
@Deprecated
|
|
public int actualSegments(boolean replicated) {
|
|
if (actualSegments > 0)
|
|
return actualSegments;
|
|
if (entriesPerSegment > 0) {
|
|
long segments = 1;
|
|
for (int i = 0; i < 3; i++) { // try to converge
|
|
long totalEntries = totalEntriesIfPoorDistribution((int) segments);
|
|
segments = divideUpper(totalEntries, entriesPerSegment);
|
|
if (segments > MAX_SEGMENTS)
|
|
throw new IllegalStateException();
|
|
}
|
|
if (minSegments > 0)
|
|
segments = Math.max(minSegments, segments);
|
|
return (int) segments;
|
|
}
|
|
// iteratively try to fit 3..8 bytes per hash lookup slot. Trying to apply small slot
|
|
// sizes (=> segment sizes, because slot size depends on segment size) not only because
|
|
// they take less memory per entry (if entries are of KBs or MBs, it doesn't matter), but
|
|
// also because if segment size is small, slot and free list are likely to lie on a single
|
|
// memory page, reducing number of memory pages to update, if Chronicle Map is persisted.
|
|
// Actually small segments are all ways better: many segments => better parallelism, lesser
|
|
// pauses for per-key operations, if parallel/background operation blocks the segment for
|
|
// the whole time while it operates on it (like iteration, probably replication background
|
|
// thread will require some level of full segment lock, however currently if doesn't, in
|
|
// future durability background thread could update slot states), because smaller segments
|
|
// contain less entries/slots and are processed faster.
|
|
//
|
|
// The only problem with small segments is that due to probability theory, if there are
|
|
// a lot of segments each of little number of entries, difference between most filled
|
|
// and least filled segment in the Chronicle Map grows. It is critical, because we don't
|
|
// support segment resize yet, and are required to allocate unnecessarily many entries per
|
|
// each segment. To compensate this at least on linux, don't accept segment sizes that
|
|
// with the given entry sizes, lead to too small total segment sizes in native memory pages,
|
|
// see comment in tryHashLookupSlotSize()
|
|
for (int hashLookupSlotSize = 3; hashLookupSlotSize <= 7; hashLookupSlotSize++) {
|
|
long segments = tryHashLookupSlotSize(hashLookupSlotSize, replicated);
|
|
if (segments > 0)
|
|
return (int) segments;
|
|
}
|
|
long maxEntriesPerSegment = findMaxEntriesPerSegmentToFitHashLookupSlotSize(8, replicated);
|
|
long maxSegments = trySegments(maxEntriesPerSegment, MAX_SEGMENTS, replicated);
|
|
if (maxSegments > 0L)
|
|
return (int) maxSegments;
|
|
throw new IllegalStateException("Max segments is " + MAX_SEGMENTS + ", configured so much" +
|
|
" entries (" + entries() + ") or average chunks per entry is too high (" +
|
|
averageChunksPerEntry(replicated) + ") that builder automatically decided to use " +
|
|
(-maxSegments) + " segments");
|
|
}
|
|
|
|
private long tryHashLookupSlotSize(int hashLookupSlotSize, boolean replicated) {
|
|
long entriesPerSegment = findMaxEntriesPerSegmentToFitHashLookupSlotSize(
|
|
hashLookupSlotSize, replicated);
|
|
long entrySpaceSize = round(entriesPerSegment * entrySizeInfo(replicated).averageEntrySize);
|
|
// Not to lose too much on linux because of "poor distribution" entry over-allocation.
|
|
// This condition should likely filter cases when we target very small hash lookup
|
|
// size + entry size is small.
|
|
// * 5 => segment will lose not more than 20% of memory, 10% on average
|
|
if (entrySpaceSize < RUNTIME_PAGE_SIZE * 5L)
|
|
return -1;
|
|
return trySegments(entriesPerSegment, MAX_SEGMENTS, replicated);
|
|
}
|
|
|
|
private long findMaxEntriesPerSegmentToFitHashLookupSlotSize(
|
|
int targetHashLookupSlotSize, boolean replicated) {
|
|
long entriesPerSegment = 1L << 62;
|
|
long step = entriesPerSegment / 2L;
|
|
while (step > 0L) {
|
|
if (hashLookupSlotBytes(entriesPerSegment, replicated) > targetHashLookupSlotSize)
|
|
entriesPerSegment -= step;
|
|
step /= 2L;
|
|
}
|
|
return entriesPerSegment - 1L;
|
|
}
|
|
|
|
private int hashLookupSlotBytes(long entriesPerSegment, boolean replicated) {
|
|
int valueBits = HashLookup.valueBits(chunksPerSegment(entriesPerSegment, replicated));
|
|
int keyBits = HashLookup.keyBits(entriesPerSegment, valueBits);
|
|
return HashLookup.entrySize(keyBits, valueBits);
|
|
}
|
|
|
|
private long trySegments(long entriesPerSegment, int maxSegments, boolean replicated) {
|
|
long firstSegmentsApproximation = Math.max(minSegments(), entries() / entriesPerSegment);
|
|
long adjustedEntries = totalEntriesIfPoorDistribution(firstSegmentsApproximation);
|
|
long segments = divideUpper(adjustedEntries, entriesPerSegment);
|
|
segments = Maths.nextPower2(Math.max(segments, minSegments()), 1L);
|
|
return segments <= maxSegments ? segments : -segments;
|
|
}
|
|
|
|
/**
|
|
* @deprecated part of private API, shouldn't be used in the client code
|
|
*/
|
|
@Deprecated
|
|
public int segmentHeaderSize(boolean replicated) {
|
|
@SuppressWarnings("deprecation")
|
|
int segments = actualSegments(replicated);
|
|
// reduce false sharing unless we have a lot of segments.
|
|
return segments <= 16 * 1024 ? 64 : 32;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> putReturnsNull(boolean putReturnsNull) {
|
|
this.putReturnsNull = putReturnsNull;
|
|
return this;
|
|
}
|
|
|
|
boolean putReturnsNull() {
|
|
return putReturnsNull;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> removeReturnsNull(boolean removeReturnsNull) {
|
|
this.removeReturnsNull = removeReturnsNull;
|
|
return this;
|
|
}
|
|
|
|
boolean removeReturnsNull() {
|
|
return removeReturnsNull;
|
|
}
|
|
|
|
// hidden for initial release.
|
|
ChronicleMapBuilder<K, V> metaDataBytes(int metaDataBytes) {
|
|
if (metaDataBytes < 0 || metaDataBytes > 255)
|
|
throw new IllegalArgumentException("MetaDataBytes must be [0..255] was " + metaDataBytes);
|
|
this.metaDataBytes = metaDataBytes;
|
|
return this;
|
|
}
|
|
|
|
int metaDataBytes() {
|
|
return metaDataBytes;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
return "ChronicleMapBuilder{" +
|
|
", actualSegments=" + pretty(actualSegments) +
|
|
", minSegments=" + pretty(minSegments) +
|
|
", entriesPerSegment=" + pretty(entriesPerSegment) +
|
|
", actualChunksPerSegment=" + pretty(actualChunksPerSegment) +
|
|
", averageKeySize=" + pretty(averageKeySize) +
|
|
", sampleKeyForConstantSizeComputation=" + pretty(sampleKey) +
|
|
", averageValueSize=" + pretty(averageValueSize) +
|
|
", sampleValueForConstantSizeComputation=" + pretty(sampleValue) +
|
|
", actualChunkSize=" + pretty(actualChunkSize) +
|
|
", valueAlignment=" + valueAlignment() +
|
|
", entries=" + entries() +
|
|
", lockTimeOut=" + lockTimeOut + " " + lockTimeOutUnit +
|
|
", metaDataBytes=" + metaDataBytes() +
|
|
", putReturnsNull=" + putReturnsNull() +
|
|
", removeReturnsNull=" + removeReturnsNull() +
|
|
", timeProvider=" + timeProvider() +
|
|
", bytesMarshallerFactory=" + pretty(bytesMarshallerFactory) +
|
|
", objectSerializer=" + pretty(objectSerializer) +
|
|
", keyBuilder=" + keyBuilder +
|
|
", valueBuilder=" + valueBuilder +
|
|
", defaultValue=" + defaultValue +
|
|
'}';
|
|
}
|
|
|
|
@SuppressWarnings("EqualsWhichDoesntCheckParameterClass")
|
|
@Override
|
|
public boolean equals(Object o) {
|
|
return builderEquals(this, o);
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
return toString().hashCode();
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> timeProvider(TimeProvider timeProvider) {
|
|
this.timeProvider = timeProvider;
|
|
return this;
|
|
}
|
|
|
|
TimeProvider timeProvider() {
|
|
return timeProvider;
|
|
}
|
|
|
|
BytesMarshallerFactory bytesMarshallerFactory() {
|
|
return bytesMarshallerFactory == null ?
|
|
bytesMarshallerFactory = new VanillaBytesMarshallerFactory() :
|
|
bytesMarshallerFactory;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> bytesMarshallerFactory(
|
|
BytesMarshallerFactory bytesMarshallerFactory) {
|
|
this.bytesMarshallerFactory = bytesMarshallerFactory;
|
|
return this;
|
|
}
|
|
|
|
ObjectSerializer acquireObjectSerializer(ObjectSerializer defaultSerializer) {
|
|
return objectSerializer == null ?
|
|
BytesMarshallableSerializer.create(bytesMarshallerFactory(), defaultSerializer) :
|
|
objectSerializer;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
* Example: <pre>{@code Map<Key, Value> map =
|
|
* ChronicleMapBuilder.of(Key.class, Value.class)
|
|
* .entries(1_000_000)
|
|
* .averageKeySize(50).averageValueSize(200)
|
|
* // this class hasn't implemented yet, just for example
|
|
* .objectSerializer(new KryoObjectSerializer())
|
|
* .create();}</pre>
|
|
* This serializer is used to serialize both keys and values, if they both require this:
|
|
* loosely typed, nullable, and custom {@linkplain #keyMarshaller(BytesMarshaller) key} and
|
|
* {@linkplain #valueMarshaller(BytesMarshaller) value} marshallers are not configured.
|
|
*/
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> objectSerializer(ObjectSerializer objectSerializer) {
|
|
this.objectSerializer = objectSerializer;
|
|
return this;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> keyMarshaller(
|
|
@NotNull BytesMarshaller<? super K> keyMarshaller) {
|
|
keyBuilder.marshaller(keyMarshaller);
|
|
return this;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> keyMarshallers(
|
|
@NotNull BytesWriter<? super K> keyWriter, @NotNull BytesReader<K> keyReader) {
|
|
keyBuilder.writer(keyWriter);
|
|
keyBuilder.reader(keyReader);
|
|
return this;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> keySizeMarshaller(@NotNull SizeMarshaller keySizeMarshaller) {
|
|
keyBuilder.sizeMarshaller(keySizeMarshaller);
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @throws IllegalStateException {@inheritDoc}
|
|
* @see #valueDeserializationFactory(ObjectFactory)
|
|
*/
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> keyDeserializationFactory(
|
|
@NotNull ObjectFactory<? extends K> keyDeserializationFactory) {
|
|
keyBuilder.factory(keyDeserializationFactory);
|
|
return this;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> immutableKeys() {
|
|
keyBuilder.instancesAreMutable(false);
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Configures the {@code BytesMarshaller} used to serialize/deserialize values to/from off-heap
|
|
* memory in maps, created by this builder. See <a href="https://github.com/OpenHFT/Chronicle-Map#serialization">the
|
|
* section about serialization in ChronicleMap manual</a> for more information.
|
|
*
|
|
* @param valueMarshaller the marshaller used to serialize values
|
|
* @return this builder back
|
|
* @see #valueMarshallers(BytesWriter, BytesReader)
|
|
* @see #objectSerializer(ObjectSerializer)
|
|
* @see #keyMarshaller(BytesMarshaller)
|
|
*/
|
|
public ChronicleMapBuilder<K, V> valueMarshaller(
|
|
@NotNull BytesMarshaller<? super V> valueMarshaller) {
|
|
valueBuilder.marshaller(valueMarshaller);
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Configures the marshallers, used to serialize/deserialize values to/from off-heap memory in
|
|
* maps, created by this builder. See <a href="https://github.com/OpenHFT/Chronicle-Map#serialization">the
|
|
* section about serialization in ChronicleMap manual</a> for more information.
|
|
* Configuring marshalling this way results to a little bit more compact in-memory layout of
|
|
* the map, comparing to a single interface configuration: {@link #valueMarshaller(
|
|
*BytesMarshaller)}. Passing {@link BytesInterop} instead of plain {@link BytesWriter}
|
|
* is, of cause, possible, but currently pointless for values.
|
|
*
|
|
* @param valueWriter the new value object → {@link Bytes} writer (interop) strategy
|
|
* @param valueReader the new {@link Bytes} → value object reader strategy
|
|
* @return this builder back
|
|
* @see #valueMarshaller(BytesMarshaller)
|
|
* @see #valueSizeMarshaller(SizeMarshaller)
|
|
* @see #keyMarshallers(BytesWriter, BytesReader)
|
|
*/
|
|
public ChronicleMapBuilder<K, V> valueMarshallers(
|
|
@NotNull BytesWriter<V> valueWriter, @NotNull BytesReader<V> valueReader) {
|
|
valueBuilder.writer(valueWriter);
|
|
valueBuilder.reader(valueReader);
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Configures the marshaller used to serialize actual value sizes to off-heap memory in maps,
|
|
* created by this builder.
|
|
*
|
|
* <p>Default value size marshaller is so-called "stop bit encoding" marshalling, unless {@link
|
|
* #constantValueSizeBySample(Object)} or the builder statically knows the value size is
|
|
* constant -- special constant size marshalling is used by default in these cases.
|
|
*
|
|
* @param valueSizeMarshaller the new marshaller, used to serialize actual value sizes to
|
|
* off-heap memory
|
|
* @return this builder back
|
|
* @see #keySizeMarshaller(SizeMarshaller)
|
|
*/
|
|
public ChronicleMapBuilder<K, V> valueSizeMarshaller(
|
|
@NotNull SizeMarshaller valueSizeMarshaller) {
|
|
valueBuilder.sizeMarshaller(valueSizeMarshaller);
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Configures factory which is used to create a new value instance, if value class is either
|
|
* {@link Byteable}, {@link BytesMarshallable} or {@link Externalizable} subclass, or value type
|
|
* is eligible for data value generation, or configured custom value reader is an instance of
|
|
* {@link DeserializationFactoryConfigurableBytesReader}, in maps, created by this builder.
|
|
* Default value deserialization factory is {@link NewInstanceObjectFactory}, which creates a
|
|
* new value instance using {@link Class#newInstance()} default constructor. You could provide
|
|
* an {@link AllocateInstanceObjectFactory}, which uses {@code Unsafe.allocateInstance(Class)}
|
|
* (you might want to do this for better performance or if you don't want to initialize fields),
|
|
* or a factory which calls a value class constructor with some arguments, or a factory which
|
|
* internally delegates to instance pool or {@link ThreadLocal}, to reduce allocations.
|
|
*
|
|
* @param valueDeserializationFactory the value factory used to produce instances to deserialize
|
|
* data in
|
|
* @return this builder back
|
|
* @throws IllegalStateException if it is not possible to apply deserialization factory to value
|
|
* deserializers, currently configured for this builder
|
|
* @see #keyDeserializationFactory(ObjectFactory)
|
|
*/
|
|
public ChronicleMapBuilder<K, V> valueDeserializationFactory(
|
|
@NotNull ObjectFactory<V> valueDeserializationFactory) {
|
|
valueBuilder.factory(valueDeserializationFactory);
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Specifies the value to be put for each key queried in {@link ChronicleMap#acquireUsing
|
|
* acquireUsing()} method, if the key is absent in the map, created by this builder.
|
|
*
|
|
* <p>This configuration overrides any previous {@link #defaultValueProvider(
|
|
* DefaultValueProvider)} configuration to this builder.
|
|
*
|
|
* @param defaultValue the default value to be put to the map for absent keys during {@code
|
|
* acquireUsing()} calls
|
|
* @return this builder object back
|
|
* @see #defaultValueProvider(DefaultValueProvider)
|
|
*/
|
|
public ChronicleMapBuilder<K, V> defaultValue(V defaultValue) {
|
|
if (defaultValue == null)
|
|
throw new IllegalArgumentException("default ChronicleMap value couldn't be null");
|
|
this.defaultValue = defaultValue;
|
|
this.constantValueProvider = null;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Specifies the function to obtain a value for the key during {@link ChronicleMap#acquireUsing
|
|
* acquireUsing()} calls, if the key is absent in the map, created by this builder.
|
|
*
|
|
* <p>This configuration overrides any previous {@link #defaultValue(Object)} configuration
|
|
* to this builder.
|
|
*
|
|
* @param defaultValueProvider the strategy to obtain a default value by the absent key
|
|
* @return this builder object back
|
|
* @see #defaultValue(Object)
|
|
*/
|
|
public ChronicleMapBuilder<K, V> defaultValueProvider(
|
|
@NotNull DefaultValueProvider<K, V> defaultValueProvider) {
|
|
Objects.requireNonNull(defaultValueProvider);
|
|
this.defaultValueProvider = defaultValueProvider;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Non-public because should be called only after {@link #preMapConstruction(boolean)}
|
|
*/
|
|
ConstantValueProvider<V> constantValueProvider() {
|
|
if (constantValueProvider != null)
|
|
return constantValueProvider;
|
|
V defaultValue = this.defaultValue;
|
|
if (defaultValue == null)
|
|
defaultValue = zeroValue();
|
|
if (defaultValue == null)
|
|
return null;
|
|
Object originalValueWriter = valueBuilder.interop();
|
|
Provider writerProvider = Provider.of(originalValueWriter.getClass());
|
|
ThreadLocalCopies copies = writerProvider.getCopies(null);
|
|
Object valueWriter = writerProvider.get(copies, originalValueWriter);
|
|
MetaProvider metaWriterProvider = valueBuilder.metaInteropProvider();
|
|
copies = metaWriterProvider.getCopies(copies);
|
|
MetaBytesWriter metaValueWriter = metaWriterProvider.get(copies,
|
|
valueBuilder.metaInterop(), valueWriter, defaultValue);
|
|
return new ConstantValueProvider<>(defaultValue, metaValueWriter, valueWriter);
|
|
}
|
|
|
|
private V zeroValue() {
|
|
if (Byteable.class.isAssignableFrom(valueBuilder.eClass)) {
|
|
try {
|
|
Object v = NativeBytes.UNSAFE.allocateInstance(valueBuilder.eClass);
|
|
Byteable defaultValue = (Byteable) v;
|
|
defaultValue.bytes(DirectStore.allocate(defaultValue.maxSize()).bytes(), 0);
|
|
return (V) v;
|
|
} catch (InstantiationException e) {
|
|
return null;
|
|
}
|
|
} else {
|
|
try {
|
|
return DataValueClasses.newDirectInstance(valueBuilder.eClass);
|
|
} catch (Exception e) {
|
|
if (valueBuilder.eClass == Long.class) {
|
|
return (V) (Long) 0L;
|
|
} else if (valueBuilder.eClass == Integer.class) {
|
|
return (V) (Integer) 0;
|
|
} else if (valueBuilder.eClass == Short.class) {
|
|
return (V) (Short) (short) 0;
|
|
} else if (valueBuilder.eClass == Character.class) {
|
|
return (V) (Character) (char) 0;
|
|
} else if (valueBuilder.eClass == Byte.class) {
|
|
return (V) (Byte) (byte) 0;
|
|
} else if (valueBuilder.eClass == Float.class) {
|
|
return (V) (Float) 0.0f;
|
|
} else if (valueBuilder.eClass == Double.class) {
|
|
return (V) (Double) 0.0;
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> replication(SingleChronicleHashReplication replication) {
|
|
this.singleHashReplication = replication;
|
|
return this;
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> replication(byte identifier) {
|
|
return replication(SingleChronicleHashReplication.builder().createWithId(identifier));
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMapBuilder<K, V> replication(
|
|
byte identifier, TcpTransportAndNetworkConfig tcpTransportAndNetwork) {
|
|
return replication(SingleChronicleHashReplication.builder()
|
|
.tcpTransportAndNetwork(tcpTransportAndNetwork).createWithId(identifier));
|
|
}
|
|
|
|
@Override
|
|
public ChronicleHashInstanceBuilder<ChronicleMap<K, V>> instance() {
|
|
return new MapInstanceBuilder<>(this.clone(), singleHashReplication, null, null, null,
|
|
new AtomicBoolean(false));
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMap<K, V> createPersistedTo(File file) throws IOException {
|
|
// clone() to make this builder instance thread-safe, because createWithFile() method
|
|
// computes some state based on configurations, but doesn't synchronize on configuration
|
|
// changes.
|
|
return clone().createWithFile(file, singleHashReplication, null);
|
|
}
|
|
|
|
@Override
|
|
public ChronicleMap<K, V> create() {
|
|
// clone() to make this builder instance thread-safe, because createWithoutFile() method
|
|
// computes some state based on configurations, but doesn't synchronize on configuration
|
|
// changes.
|
|
return clone().createWithoutFile(singleHashReplication, null);
|
|
}
|
|
|
|
ChronicleMap<K, V> create(MapInstanceBuilder<K, V> ib) throws IOException {
|
|
if (ib.file != null) {
|
|
return createWithFile(ib.file, ib.singleHashReplication, ib.channel);
|
|
} else {
|
|
return createWithoutFile(ib.singleHashReplication, ib.channel);
|
|
}
|
|
}
|
|
|
|
ChronicleMap<K, V> createWithFile(
|
|
File file, SingleChronicleHashReplication singleHashReplication,
|
|
ReplicationChannel channel) throws IOException {
|
|
for (int i = 0; i < 10; i++) {
|
|
if (file.exists() && file.length() > 0) {
|
|
try (FileInputStream fis = new FileInputStream(file);
|
|
ObjectInputStream ois = new ObjectInputStream(fis)) {
|
|
Object m;
|
|
byte serialization = ois.readByte();
|
|
if (serialization == XML_SERIALIZATION) {
|
|
m = deserializeHeaderViaXStream(ois);
|
|
} else if (serialization == BINARY_SERIALIZATION) {
|
|
try {
|
|
m = ois.readObject();
|
|
} catch (ClassNotFoundException e) {
|
|
throw new AssertionError(e);
|
|
}
|
|
} else {
|
|
throw new IOException("Unknown map header serialization type: " +
|
|
serialization);
|
|
}
|
|
VanillaChronicleMap<K, ?, ?, V, ?, ?, ?> map =
|
|
(VanillaChronicleMap<K, ?, ?, V, ?, ?, ?>) m;
|
|
map.initTransientsFromBuilder(this);
|
|
map.headerSize = roundUpMapHeaderSize(fis.getChannel().position());
|
|
map.createMappedStoreAndSegments(file);
|
|
// This is needed to property initialize key and value serialization builders,
|
|
// which are later used in replication
|
|
// TODO don't use SerializationBuilders in replication, extract marshallers
|
|
// needed to transmit to stateless clients directly from map instance
|
|
preMapConstruction(singleHashReplication != null || channel != null);
|
|
return establishReplication(map, singleHashReplication, channel);
|
|
}
|
|
}
|
|
if (file.createNewFile() || file.length() == 0) {
|
|
break;
|
|
}
|
|
try {
|
|
Thread.sleep(100);
|
|
} catch (InterruptedException e) {
|
|
throw new IOException(e);
|
|
}
|
|
}
|
|
// new file
|
|
if (!file.exists())
|
|
throw new FileNotFoundException("Unable to create " + file);
|
|
|
|
VanillaChronicleMap<K, ?, ?, V, ?, ?, ?> map = newMap(singleHashReplication, channel);
|
|
|
|
try (FileOutputStream fos = new FileOutputStream(file);
|
|
ObjectOutputStream oos = new ObjectOutputStream(fos)) {
|
|
if (!trySerializeHeaderViaXStream(map, oos)) {
|
|
oos.writeByte(BINARY_SERIALIZATION);
|
|
oos.writeObject(map);
|
|
}
|
|
oos.flush();
|
|
map.headerSize = roundUpMapHeaderSize(fos.getChannel().position());
|
|
map.createMappedStoreAndSegments(file);
|
|
}
|
|
|
|
return establishReplication(map, singleHashReplication, channel);
|
|
}
|
|
|
|
private static <K, V> boolean trySerializeHeaderViaXStream(
|
|
VanillaChronicleMap<K, ?, ?, V, ?, ?, ?> map, ObjectOutputStream oos)
|
|
throws IOException {
|
|
Class<?> xStreamClass;
|
|
try {
|
|
xStreamClass =
|
|
Class.forName("net.openhft.xstream.MapHeaderSerializationXStream");
|
|
} catch (ClassNotFoundException e) {
|
|
xStreamClass = null;
|
|
}
|
|
if (xStreamClass == null) {
|
|
LOG.info("xStream not found, use binary ChronicleMap header serialization");
|
|
return false;
|
|
}
|
|
try {
|
|
oos.writeByte(XML_SERIALIZATION);
|
|
Method toXML = xStreamClass.getMethod("toXML", Object.class, OutputStream.class);
|
|
toXML.invoke(xStreamClass.newInstance(), map, oos);
|
|
return true;
|
|
} catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException |
|
|
InstantiationException e) {
|
|
throw new AssertionError(e);
|
|
}
|
|
}
|
|
|
|
private static Object deserializeHeaderViaXStream(ObjectInputStream ois) {
|
|
try {
|
|
Class<?> xStreamClass =
|
|
Class.forName("net.openhft.xstream.MapHeaderSerializationXStream");
|
|
Method fromXML = xStreamClass.getMethod("fromXML", InputStream.class);
|
|
return fromXML.invoke(xStreamClass.newInstance(), ois);
|
|
} catch (ClassNotFoundException | NoSuchMethodException | InvocationTargetException |
|
|
IllegalAccessException | InstantiationException e) {
|
|
throw new AssertionError(e);
|
|
}
|
|
}
|
|
|
|
ChronicleMap<K, V> createWithoutFile(
|
|
SingleChronicleHashReplication singleHashReplication, ReplicationChannel channel) {
|
|
try {
|
|
// pushingToMapEventListener();
|
|
VanillaChronicleMap<K, ?, ?, V, ?, ?, ?> map = newMap(singleHashReplication, channel);
|
|
// TODO this method had been moved
|
|
// if(OS.warnOnWindows(map.sizeInBytes())){
|
|
// throw new IllegalStateException("Windows cannot support this configuration");
|
|
// }
|
|
BytesStore bytesStore = new DirectStore(JDKObjectSerializer.INSTANCE,
|
|
map.sizeInBytes(), true);
|
|
map.createMappedStoreAndSegments(bytesStore);
|
|
return establishReplication(map, singleHashReplication, channel);
|
|
} catch (IOException e) {
|
|
// file-less version should never trigger an IOException.
|
|
throw new AssertionError(e);
|
|
}
|
|
}
|
|
//
|
|
// private void pushingToMapEventListener() {
|
|
// if (pushToAddresses == null || pushToAddresses.length == 0) {
|
|
// return;
|
|
// }
|
|
// try {
|
|
// Class<?> pmel = Class.forName(
|
|
// "com.higherfrequencytrading.chronicle.enterprise.map.PushingMapEventListener");
|
|
// Constructor<?> constructor = pmel.getConstructor(ChronicleMap[].class);
|
|
// // create a stateless client for each address
|
|
// ChronicleMap[] statelessClients = new ChronicleMap[pushToAddresses.length];
|
|
// ChronicleMapBuilder<K, V> cmb = clone();
|
|
// cmb.pushTo((InetSocketAddress[]) null);
|
|
// for (int i = 0; i < pushToAddresses.length; i++) {
|
|
// statelessClients[i] = ChronicleMapStatelessClientBuilder.of(pushToAddresses[i])
|
|
// .create();
|
|
// }
|
|
// eventListener =
|
|
// (MapEventListener<K, V>) constructor.newInstance((Object) statelessClients);
|
|
// } catch (ClassNotFoundException e) {
|
|
// LoggerFactory.getLogger(getClass().getName())
|
|
// .warn("Chronicle Enterprise not found in the class path");
|
|
// } catch (Exception e) {
|
|
// LoggerFactory.getLogger(getClass().getName())
|
|
// .error("PushingMapEventListener failed to load", e);
|
|
// }
|
|
// }
|
|
|
|
private VanillaChronicleMap<K, ?, ?, V, ?, ?, ?> newMap(
|
|
SingleChronicleHashReplication singleHashReplication, ReplicationChannel channel)
|
|
throws IOException {
|
|
boolean replicated = singleHashReplication != null || channel != null;
|
|
preMapConstruction(replicated);
|
|
if (replicated) {
|
|
AbstractReplication replication;
|
|
if (singleHashReplication != null) {
|
|
replication = singleHashReplication;
|
|
} else {
|
|
replication = channel.hub();
|
|
}
|
|
return new ReplicatedChronicleMap<>(this, replication);
|
|
} else {
|
|
return new VanillaChronicleMap<>(this, false);
|
|
}
|
|
}
|
|
|
|
void preMapConstruction(boolean replicated) {
|
|
averageKeySize = preMapConstruction(keyBuilder, averageKeySize, averageKey, sampleKey);
|
|
averageValueSize = preMapConstruction(valueBuilder,
|
|
averageValueSize, averageValue, sampleValue);
|
|
if (sampleKey == null)
|
|
keyBuilder.maxSize(bufferSize(keyBuilder, averageKeySize, replicated));
|
|
if (sampleValue == null)
|
|
valueBuilder.maxSize(bufferSize(valueBuilder, averageValueSize, replicated));
|
|
stateChecks();
|
|
}
|
|
|
|
private <E> double preMapConstruction(
|
|
SerializationBuilder<E> builder, double configuredAverageSize, E average, E sample) {
|
|
builder.objectSerializer(acquireObjectSerializer(JDKObjectSerializer.INSTANCE));
|
|
if (sample != null) {
|
|
builder.maxSize(DEFAULT_KEY_OR_VALUE_SIZE);
|
|
builder.constantSizeBySample(sample);
|
|
return builder.maxSize();
|
|
} else {
|
|
return averageKeyOrValueSize(configuredAverageSize, builder, average);
|
|
}
|
|
}
|
|
|
|
private void stateChecks() {
|
|
if (strictStateChecks) {
|
|
if (entries < 0)
|
|
throw new IllegalStateException("Entries must be specified");
|
|
if (!constantlySizedKeys() && !isDefined(averageKeySize))
|
|
throw new IllegalStateException("No info about key size");
|
|
if (!constantlySizedValues() && !isDefined(averageValueSize))
|
|
throw new IllegalStateException("No info about value size");
|
|
}
|
|
checkAlignmentOnlyIfValuesPossiblyReferenceOffHeap();
|
|
checkActualChunksPerSegmentIsConfiguredOnlyIfOtherLowLevelConfigsAreManual();
|
|
checkActualChunksPerSegmentGreaterOrEqualToEntries();
|
|
}
|
|
|
|
private ChronicleMap<K, V> establishReplication(
|
|
VanillaChronicleMap<K, ?, ?, V, ?, ?, ?> map,
|
|
SingleChronicleHashReplication singleHashReplication,
|
|
ReplicationChannel channel) throws IOException {
|
|
if (map instanceof ReplicatedChronicleMap) {
|
|
if (singleHashReplication != null && channel != null) {
|
|
throw new AssertionError("Only one non-null replication should be passed");
|
|
}
|
|
ReplicatedChronicleMap result = (ReplicatedChronicleMap) map;
|
|
List<Replicator> replicators = new ArrayList<>(2);
|
|
if (singleHashReplication != null) {
|
|
if (singleHashReplication.tcpTransportAndNetwork() != null)
|
|
replicators.add(Replicators.tcp(singleHashReplication));
|
|
if (singleHashReplication.udpTransport() != null)
|
|
replicators.add(Replicators.udp(singleHashReplication.udpTransport()));
|
|
} else {
|
|
ReplicationHub hub = channel.hub();
|
|
|
|
ChannelProvider provider = ChannelProvider.getProvider(hub);
|
|
ChannelProvider.ChronicleChannel ch = provider.createChannel(channel.channelId());
|
|
replicators.add(ch);
|
|
}
|
|
for (Replicator replicator : replicators) {
|
|
Closeable token = replicator.applyTo(this, result, result,
|
|
(ReplicatedChronicleMap)map);
|
|
if (replicators.size() == 1 && token.getClass() == UdpReplicator.class) {
|
|
LOG.warn(Replicators.ONLY_UDP_WARN_MESSAGE);
|
|
}
|
|
result.addCloseable(token);
|
|
}
|
|
}
|
|
return map;
|
|
}
|
|
|
|
private long bufferSize(SerializationBuilder builder, double averageSize, boolean replicated) {
|
|
if (builder.constantSizeMarshaller())
|
|
return round(ceil(averageSize));
|
|
|
|
@SuppressWarnings("deprecation")
|
|
int maxChunksPerEntry = maxChunksPerEntry(replicated);
|
|
// if maxChunksPerEntry is Integer.MAX_VALUE, we, of cause,
|
|
// are not going to allocate such big buffers
|
|
int limitedMaxChunksPerEntry = Math.min(64, maxChunksPerEntry);
|
|
long limitedMaxEntrySize = limitedMaxChunksPerEntry * chunkSize(replicated);
|
|
|
|
// if expected map size is about 1000, seems rather wasteful to allocate
|
|
// key and value serialization buffers each x64 of expected entry size..
|
|
long limitFactor = Math.max(2L, entries() >> 10);
|
|
|
|
return Math.min(round(ceil(limitFactor * averageSize)), limitedMaxEntrySize);
|
|
}
|
|
|
|
/**
|
|
* Inject your SPI code around basic {@code ChronicleMap}'s operations with entries:
|
|
* removing entries, replacing the entries' value and inserting the new entry.
|
|
*
|
|
* <p>This affects behaviour of ordinary map.put(), map.remove(), etc. calls, as well as removes
|
|
* and replacing values <i>during iterations</i>, <i>remote map calls</i> and
|
|
* <i>internal replication operations</i>.
|
|
*/
|
|
public ChronicleMapBuilder<K, V> entryOperations(MapEntryOperations<K, V, ?> entryOperations) {
|
|
Objects.requireNonNull(entryOperations);
|
|
this.entryOperations = entryOperations;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Inject your SPI around logic of all {@code ChronicleMap}'s operations with individual keys:
|
|
* from {@link ChronicleMap#containsKey} to {@link ChronicleMap#acquireUsing} and
|
|
* {@link ChronicleMap#merge}.
|
|
*
|
|
* <p>This affects behaviour of ordinary map calls, as well as <i>remote calls</i>.
|
|
*/
|
|
public ChronicleMapBuilder<K, V> mapMethods(MapMethods<K, V, ?> mapMethods) {
|
|
Objects.requireNonNull(mapMethods);
|
|
this.methods = mapMethods;
|
|
return this;
|
|
}
|
|
|
|
public ChronicleMapBuilder<K, V> remoteOperations(
|
|
MapRemoteOperations<K, V, ?> remoteOperations) {
|
|
Objects.requireNonNull(remoteOperations);
|
|
this.remoteOperations = remoteOperations;
|
|
return this;
|
|
}
|
|
}
|
|
|