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/*
* Copyright 2016-2020 chronicle.software
*
* https://chronicle.software
*
* Licensed 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 net.openhft.chronicle.queue.impl.single;
import net.openhft.chronicle.bytes.*;
import net.openhft.chronicle.core.Jvm;
import net.openhft.chronicle.core.Maths;
import net.openhft.chronicle.core.OS;
import net.openhft.chronicle.core.io.Closeable;
import net.openhft.chronicle.core.io.IORuntimeException;
import net.openhft.chronicle.core.threads.EventLoop;
import net.openhft.chronicle.core.threads.HandlerPriority;
import net.openhft.chronicle.core.threads.OnDemandEventLoop;
import net.openhft.chronicle.core.time.SystemTimeProvider;
import net.openhft.chronicle.core.time.TimeProvider;
import net.openhft.chronicle.core.util.Builder;
import net.openhft.chronicle.core.util.ObjectUtils;
import net.openhft.chronicle.core.util.Updater;
import net.openhft.chronicle.queue.*;
import net.openhft.chronicle.queue.impl.*;
import net.openhft.chronicle.queue.impl.table.ReadonlyTableStore;
import net.openhft.chronicle.queue.impl.table.SingleTableBuilder;
import net.openhft.chronicle.queue.internal.domestic.QueueOffsetSpec;
import net.openhft.chronicle.threads.*;
import net.openhft.chronicle.wire.*;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.crypto.spec.SecretKeySpec;
import java.io.File;
import java.lang.reflect.Constructor;
import java.nio.file.Path;
import java.time.LocalTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import static java.util.Objects.requireNonNull;
import static net.openhft.chronicle.core.pool.ClassAliasPool.CLASS_ALIASES;
import static net.openhft.chronicle.queue.impl.single.SingleChronicleQueue.QUEUE_METADATA_FILE;
@SuppressWarnings("deprecation")
public class SingleChronicleQueueBuilder extends SelfDescribingMarshallable implements Cloneable, Builder {
public static final long SMALL_BLOCK_SIZE = OS.isWindows() ? OS.SAFE_PAGE_SIZE : OS.pageSize(); // the smallest safe block size on Windows 8+
public static final long DEFAULT_SPARSE_CAPACITY = 512L << 30;
private static final Constructor ENTERPRISE_QUEUE_CONSTRUCTOR;
private static final WireStoreFactory storeFactory = SingleChronicleQueueBuilder::createStore;
private static final Supplier TIMING_PAUSER_SUPPLIER = DefaultPauserSupplier.INSTANCE;
static {
CLASS_ALIASES.addAlias(WireType.class);
CLASS_ALIASES.addAlias(SCQMeta.class, "SCQMeta");
CLASS_ALIASES.addAlias(SCQRoll.class, "SCQSRoll");
CLASS_ALIASES.addAlias(SCQIndexing.class, "SCQSIndexing");
CLASS_ALIASES.addAlias(SingleChronicleQueueStore.class, "SCQStore");
Constructor co;
try {
co = ((Class) Class.forName("software.chronicle.enterprise.queue.EnterpriseSingleChronicleQueue")).getDeclaredConstructors()[0];
Jvm.setAccessible(co);
} catch (Exception e) {
co = null;
}
ENTERPRISE_QUEUE_CONSTRUCTOR = co;
}
private BufferMode writeBufferMode = BufferMode.None;
private BufferMode readBufferMode = BufferMode.None;
private WireType wireType = WireType.BINARY_LIGHT;
private Long blockSize;
private File path;
private RollCycle rollCycle;
private Long epoch; // default is 1970-01-01 00:00:00.000 UTC
private Long bufferCapacity;
private Integer indexSpacing;
private Integer indexCount;
private Boolean enableRingBufferMonitoring;
private Boolean ringBufferReaderCanDrain;
private Boolean ringBufferForceCreateReader;
private Boolean ringBufferReopenReader;
private Supplier ringBufferPauserSupplier;
private HandlerPriority drainerPriority = HandlerPriority.CONCURRENT;
private int drainerTimeoutMS = -1;
@Nullable
private EventLoop eventLoop;
/**
* by default does not log any stats of the ring buffer
*/
private Consumer onRingBufferStats;
private TimeProvider timeProvider;
private Supplier pauserSupplier;
private Long timeoutMS; // 10 seconds.
private Integer sourceId;
private StoreFileListener storeFileListener;
private Boolean readOnly;
private boolean checkInterrupts;
private transient TableStore metaStore;
// enterprise stuff
private int deltaCheckpointInterval = -1;
private Supplier, Bytes>> encodingSupplier;
private Supplier, Bytes>> decodingSupplier;
private Updater> messageInitializer;
private Consumer> messageHeaderReader;
private SecretKeySpec key;
private int maxTailers;
private AsyncBufferCreator bufferBytesStoreCreator;
private Long pretouchIntervalMillis;
private LocalTime rollTime;
private ZoneId rollTimeZone;
private QueueOffsetSpec queueOffsetSpec;
private boolean doubleBuffer;
private Function createAppenderConditionCreator;
private long forceDirectoryListingRefreshIntervalMs = 60_000;
private AppenderListener appenderListener;
private SyncMode syncMode;
protected SingleChronicleQueueBuilder() {
}
/*
* ========================
* Builders
* ========================
*/
public static void addAliases() {
// static initialiser.
}
/**
* @return an empty builder
*/
public static SingleChronicleQueueBuilder builder() {
return new SingleChronicleQueueBuilder();
}
@NotNull
public static SingleChronicleQueueBuilder builder(@NotNull Path path, @NotNull WireType wireType) {
return builder(path.toFile(), wireType);
}
@NotNull
public static SingleChronicleQueueBuilder builder(@NotNull File file, @NotNull WireType wireType) {
SingleChronicleQueueBuilder result = builder().wireType(wireType);
if (file.isFile()) {
if (!file.getName().endsWith(SingleChronicleQueue.SUFFIX)) {
throw new IllegalArgumentException("Invalid file type: " + file.getName());
}
Jvm.warn().on(SingleChronicleQueueBuilder.class,
"Queues should be configured with the queue directory, not a specific filename. Actual file used: "
+ file.getParentFile());
result.path(file.getParentFile());
} else
result.path(file);
return result;
}
public static SingleChronicleQueueBuilder single() {
SingleChronicleQueueBuilder builder = builder();
builder.wireType(WireType.BINARY_LIGHT);
return builder;
}
public static SingleChronicleQueueBuilder single(@NotNull String basePath) {
return binary(basePath);
}
public static SingleChronicleQueueBuilder single(@NotNull File basePath) {
return binary(basePath);
}
public static SingleChronicleQueueBuilder binary(@NotNull Path path) {
return binary(path.toFile());
}
public static SingleChronicleQueueBuilder binary(@NotNull String basePath) {
return binary(new File(basePath));
}
public static SingleChronicleQueueBuilder binary(@NotNull File basePathFile) {
return builder(basePathFile, WireType.BINARY_LIGHT);
}
@NotNull
static SingleChronicleQueueStore createStore(@NotNull RollingChronicleQueue queue,
@NotNull Wire wire) {
MappedBytes mappedBytes = (MappedBytes) wire.bytes();
final SingleChronicleQueueStore wireStore = new SingleChronicleQueueStore(
queue.rollCycle(),
queue.wireType(),
mappedBytes,
queue.indexCount(),
queue.indexSpacing());
wire.writeEventName(MetaDataKeys.header).typedMarshallable(wireStore);
return wireStore;
}
public static boolean areEnterpriseFeaturesAvailable() {
return ENTERPRISE_QUEUE_CONSTRUCTOR != null;
}
private static RollCycle loadDefaultRollCycle() {
String rollCycleProperty = Jvm.getProperty(QueueSystemProperties.DEFAULT_ROLL_CYCLE_PROPERTY);
if (null == rollCycleProperty) {
return RollCycles.DEFAULT;
}
String[] rollCyclePropertyParts = rollCycleProperty.split(":");
if (rollCyclePropertyParts.length > 0) {
try {
Class rollCycleClass = Class.forName(rollCyclePropertyParts[0]);
if (Enum.class.isAssignableFrom(rollCycleClass)) {
if (rollCyclePropertyParts.length < 2) {
Jvm.warn().on(SingleChronicleQueueBuilder.class,
"Default roll cycle configured as enum, but enum value not specified: " + rollCycleProperty);
} else {
@SuppressWarnings({"unchecked","rawtypes"})
Class eClass = (Class) rollCycleClass;
@SuppressWarnings("unchecked")
Object instance = ObjectUtils.valueOfIgnoreCase(eClass, rollCyclePropertyParts[1]);
if (instance instanceof RollCycle) {
return (RollCycle) instance;
} else {
Jvm.warn().on(SingleChronicleQueueBuilder.class,
"Configured default rollcycle is not a subclass of RollCycle");
}
}
} else {
@SuppressWarnings("unchecked")
Object instance = ObjectUtils.newInstance(rollCycleClass);
if (instance instanceof RollCycle) {
return (RollCycle) instance;
} else {
Jvm.warn().on(SingleChronicleQueueBuilder.class,
"Configured default rollcycle is not a subclass of RollCycle");
}
}
} catch (ClassNotFoundException ignored) {
Jvm.warn().on(SingleChronicleQueueBuilder.class,
"Default roll cycle class: " + rollCyclePropertyParts[0] + " was not found");
}
}
return RollCycles.DEFAULT;
}
public WireStoreFactory storeFactory() {
return storeFactory;
}
@NotNull
public SingleChronicleQueue build() {
preBuild();
SingleChronicleQueue chronicleQueue;
// It is important to check enterprise features after preBuild()
// Enterprise-only config options can be loaded from the metadata
if (checkEnterpriseFeaturesRequested())
chronicleQueue = buildEnterprise();
else
chronicleQueue = new SingleChronicleQueue(this);
postBuild(chronicleQueue);
return chronicleQueue;
}
private void postBuild(@NotNull SingleChronicleQueue chronicleQueue) {
if (!readOnly()) {
/*
The condition has a circular dependency with the Queue, so we need to add it after the queue is
constructed. This is to avoid passing `this` out of the constructor.
*/
chronicleQueue.createAppenderCondition(requireNonNull(createAppenderConditionCreator().apply(chronicleQueue)));
}
}
private boolean checkEnterpriseFeaturesRequested() {
boolean result = false;
if (readBufferMode != BufferMode.None)
result = onlyAvailableInEnterprise("Buffering");
if (writeBufferMode != BufferMode.None)
result = onlyAvailableInEnterprise("Buffering");
if (rollTimeZone != null && !rollTimeZone.getId().equals("UTC") && !rollTimeZone.getId().equals("Z"))
result = onlyAvailableInEnterprise("Non-UTC roll time zone");
if (wireType == WireType.DELTA_BINARY)
result = onlyAvailableInEnterprise("Wire type " + wireType.name());
if (encodingSupplier != null)
result = onlyAvailableInEnterprise("Encoding");
if (key != null)
result = onlyAvailableInEnterprise("Encryption");
if (hasPretouchIntervalMillis())
result = onlyAvailableInEnterprise("Out of process pretouching");
return result;
}
public static boolean onlyAvailableInEnterprise(final String feature) {
if (ENTERPRISE_QUEUE_CONSTRUCTOR == null)
Jvm.warn().on(SingleChronicleQueueBuilder.class, feature + " is only supported in Chronicle Queue Enterprise. If you would like to use this feature, please contact [email protected] for more information.");
return true;
}
@NotNull
private SingleChronicleQueue buildEnterprise() {
if (ENTERPRISE_QUEUE_CONSTRUCTOR == null)
throw new IllegalStateException("Enterprise features requested but Chronicle Queue Enterprise is not in the class path!");
try {
return (SingleChronicleQueue) ENTERPRISE_QUEUE_CONSTRUCTOR.newInstance(this);
} catch (Exception e) {
throw new IllegalStateException("Couldn't create an instance of Enterprise queue", e);
}
}
public SingleChronicleQueueBuilder aesEncryption(@Nullable byte[] keyBytes) {
if (keyBytes == null) {
codingSuppliers(null, null);
return this;
}
key = new SecretKeySpec(keyBytes, "AES");
return this;
}
public Updater> messageInitializer() {
return messageInitializer == null ? Bytes::clear : messageInitializer;
}
public Consumer> messageHeaderReader() {
return messageHeaderReader == null ? b -> {
} : messageHeaderReader;
}
public SingleChronicleQueueBuilder messageHeader(Updater> messageInitializer,
Consumer> messageHeaderReader) {
this.messageInitializer = messageInitializer;
this.messageHeaderReader = messageHeaderReader;
return this;
}
public SingleChronicleQueueBuilder rollTime(@NotNull final LocalTime rollTime) {
rollTime(rollTime, rollTimeZone);
return this;
}
public ZoneId rollTimeZone() {
return rollTimeZone;
}
public SingleChronicleQueueBuilder rollTimeZone(@NotNull final ZoneId rollTimeZone) {
rollTime(rollTime, rollTimeZone);
return this;
}
public SingleChronicleQueueBuilder rollTime(@NotNull final LocalTime rollTime, @NotNull final ZoneId zoneId) {
this.rollTime = rollTime;
this.rollTimeZone = zoneId;
this.epoch = TimeUnit.SECONDS.toMillis(rollTime.toSecondOfDay());
this.queueOffsetSpec = QueueOffsetSpec.ofRollTime(rollTime, zoneId);
return this;
}
protected void initializeMetadata() {
File metapath = metapath();
validateRollCycle(metapath);
SCQMeta metadata = new SCQMeta(new SCQRoll(rollCycle(), epoch(), rollTime, rollTimeZone), deltaCheckpointInterval(),
sourceId());
try {
boolean readOnly = readOnly();
metaStore = SingleTableBuilder.binary(metapath, metadata).readOnly(readOnly).build();
// check if metadata was overridden
SCQMeta newMeta = metaStore.metadata();
sourceId(newMeta.sourceId());
String format = newMeta.roll().format();
if (!format.equals(rollCycle().format())) {
// roll cycle changed
overrideRollCycleForFileName(format);
}
// if it was overridden - reset
rollTime = newMeta.roll().rollTime();
rollTimeZone = newMeta.roll().rollTimeZone();
epoch = newMeta.roll().epoch();
} catch (IORuntimeException ex) {
// readonly=true and file doesn't exist
if (OS.isWindows())
throw ex; // we cant have a read-only table store on windows so we have no option but to throw the ex.
if (ex.getMessage().equals("Metadata file not found in readOnly mode"))
Jvm.warn().on(getClass(), "Failback to readonly tablestore " + ex);
else
Jvm.warn().on(getClass(), "Failback to readonly tablestore", ex);
metaStore = new ReadonlyTableStore<>(metadata);
}
}
private void validateRollCycle(File metapath) {
if (!metapath.exists()) {
// no metadata, so we need to check if there're cq4 files and if so try to validate roll cycle
// the code is slightly brutal and crude but should work for most cases. It will NOT work if files were created with
// the following cycles: LARGE_HOURLY_SPARSE LARGE_HOURLY_XSPARSE LARGE_DAILY XLARGE_DAILY HUGE_DAILY HUGE_DAILY_XSPARSE
// for such cases user MUST use correct roll cycle when creating the queue
String[] list = path.list((d, name) -> name.endsWith(SingleChronicleQueue.SUFFIX));
if (list != null && list.length > 0) {
String filename = list[0];
for (RollCycle cycle : RollCycles.all()) {
try {
DateTimeFormatter.ofPattern(cycle.format())
.parse(filename.substring(0, filename.length() - 4));
overrideRollCycle(cycle);
break;
} catch (Exception expected) {
}
}
}
}
}
private void overrideRollCycleForFileName(String pattern) {
for (RollCycle cycle : RollCycles.all()) {
if (cycle.format().equals(pattern)) {
overrideRollCycle(cycle);
return;
}
}
throw new IllegalStateException("Can't find an appropriate RollCycles to override to of length " + pattern);
}
private void overrideRollCycle(RollCycle cycle) {
if (rollCycle != cycle && rollCycle != null)
Jvm.warn().on(getClass(), "Overriding roll cycle from " + rollCycle + " to " + cycle);
rollCycle = cycle;
}
private File metapath() {
final File storeFilePath;
if ("".equals(path.getPath())) {
storeFilePath = new File(QUEUE_METADATA_FILE);
} else {
storeFilePath = new File(path, QUEUE_METADATA_FILE);
path.mkdirs();
}
return storeFilePath;
}
@NotNull
public Function createAppenderConditionCreator() {
if (createAppenderConditionCreator == null) {
return q -> NoOpCondition.INSTANCE;
}
return createAppenderConditionCreator;
}
/**
* @return Factory for the {@link Condition} that will be waited on before a new appender is created
*
* NOTE: The returned {@link Condition} will not block subsequent calls to acquireAppender from the
* same thread, only when the call would result in the creation of a new appender.
*/
@NotNull
public SingleChronicleQueueBuilder createAppenderConditionCreator(Function creator) {
createAppenderConditionCreator = creator;
return this;
}
@NotNull
WriteLock writeLock() {
return readOnly() ? new ReadOnlyWriteLock() : new TableStoreWriteLock(metaStore, pauserSupplier(), timeoutMS() * 3 / 2);
}
public int deltaCheckpointInterval() {
return deltaCheckpointInterval == -1 ? 64 : deltaCheckpointInterval;
}
public QueueOffsetSpec queueOffsetSpec() {
return queueOffsetSpec == null ? QueueOffsetSpec.ofNone() : queueOffsetSpec;
}
TableStore metaStore() {
return metaStore;
}
/**
* RingBuffer tailers need to be preallocated. Only set this if using readBufferMode=Asynchronous.
* By default 1 tailer will be created for the user.
*
* @param maxTailers number of tailers that will be required from this queue, not including the draining tailer
* @return this
*/
public SingleChronicleQueueBuilder maxTailers(int maxTailers) {
this.maxTailers = maxTailers;
return this;
}
/**
* maxTailers
*
* @return number of tailers that will be required from this queue, not including the draining tailer
*/
public int maxTailers() {
return maxTailers;
}
public SingleChronicleQueueBuilder asyncBufferCreator(AsyncBufferCreator asyncBufferCreator) {
this.bufferBytesStoreCreator = asyncBufferCreator;
return this;
}
/**
* Creator for BytesStore for async mode. Allows visibility of data to be controlled.
* See also EnterpriseSingleChronicleQueue.RB_BYTES_STORE_CREATOR_NATIVE etc.
*
* If you are using more than one {@link ChronicleQueue} object to access the async'd queue then you
* will need to set this.
*
* This is an enterprise feature.
*
* @return asyncBufferCreator
*/
public AsyncBufferCreator asyncBufferCreator() {
return bufferBytesStoreCreator;
}
/**
* Enable out-of-process pretoucher (AKA preloader) (Queue Enterprise feature)
*/
public SingleChronicleQueueBuilder enablePreloader(final long pretouchIntervalMillis) {
this.pretouchIntervalMillis = pretouchIntervalMillis;
return this;
}
/**
* Interval in ms to invoke out of process pretoucher. Default is not to turn on
*
* @return interval ms
*/
public long pretouchIntervalMillis() {
return pretouchIntervalMillis;
}
public boolean hasPretouchIntervalMillis() {
return pretouchIntervalMillis != null;
}
public SingleChronicleQueueBuilder path(String path) {
return path(new File(path));
}
public SingleChronicleQueueBuilder path(final File path) {
this.path = path;
return this;
}
public SingleChronicleQueueBuilder path(final Path path) {
this.path = path.toFile();
return this;
}
/**
* consumer will be called every second, also as there is data to report
*
* @param onRingBufferStats a consumer of the BytesRingBufferStats
* @return this
*/
public SingleChronicleQueueBuilder onRingBufferStats(@NotNull Consumer onRingBufferStats) {
this.onRingBufferStats = onRingBufferStats;
return this;
}
public Consumer onRingBufferStats() {
return this.onRingBufferStats;
}
@NotNull
public File path() {
return this.path;
}
public SingleChronicleQueueBuilder blockSize(long blockSize) {
this.blockSize = Math.max(SMALL_BLOCK_SIZE, blockSize);
return this;
}
public SingleChronicleQueueBuilder blockSize(int blockSize) {
return blockSize((long) blockSize);
}
/**
* @return - this is the size of a memory mapping chunk, a queue is read/written by using a number of blocks, you should avoid changing this unnecessarily.
*/
public long blockSize() {
long bs = blockSize == null
? OS.is64Bit() ? 64L << 20 : SMALL_BLOCK_SIZE
: blockSize;
// can add an index2index & an index in one go.
long minSize = Math.max(SMALL_BLOCK_SIZE, 32L * indexCount());
return Math.max(minSize, bs);
}
/**
* THIS IS FOR TESTING ONLY.
* This makes the block size small to speed up short tests and show up issues which occur when moving from one block to another.
*
* Using this will be slower when you have many messages, and break when you have large messages.
*
* NOTE: This size is differnt on Linux and Windows. If you want the same size for both use {@code blockSize(OS.SAFE_PAGE_SIZE)}
*
* @return this
*/
public SingleChronicleQueueBuilder testBlockSize() {
// small size for testing purposes only.
return blockSize(SMALL_BLOCK_SIZE);
}
@NotNull
public SingleChronicleQueueBuilder wireType(@NotNull WireType wireType) {
if (wireType == WireType.DELTA_BINARY)
deltaCheckpointInterval(64);
this.wireType = wireType;
return this;
}
private void deltaCheckpointInterval(int deltaCheckpointInterval) {
assert checkIsPowerOf2(deltaCheckpointInterval);
this.deltaCheckpointInterval = deltaCheckpointInterval;
}
private boolean checkIsPowerOf2(long value) {
return (value & (value - 1)) == 0;
}
@NotNull
public WireType wireType() {
return this.wireType == null ? WireType.BINARY_LIGHT : wireType;
}
@NotNull
public SingleChronicleQueueBuilder rollCycle(@NotNull RollCycle rollCycle) {
assert rollCycle != null;
this.rollCycle = rollCycle;
return this;
}
@NotNull
public RollCycle rollCycle() {
return this.rollCycle == null ? loadDefaultRollCycle() : this.rollCycle;
}
/**
* @return ring buffer capacity in bytes [ Chronicle-Ring is an enterprise product ]
*/
public long bufferCapacity() {
return Math.min(blockSize() / 4, bufferCapacity == null ? 2 << 20 : bufferCapacity);
}
/**
* @param bufferCapacity sets the ring buffer capacity in bytes
* @return this
*/
@NotNull
public SingleChronicleQueueBuilder bufferCapacity(long bufferCapacity) {
this.bufferCapacity = bufferCapacity;
return this;
}
/**
* sets epoch offset in milliseconds
*
* @param epoch sets an epoch offset as the number of number of milliseconds since January 1,
* 1970, 00:00:00 GMT
* @return {@code this}
*/
@NotNull
public SingleChronicleQueueBuilder epoch(long epoch) {
this.epoch = epoch;
queueOffsetSpec = QueueOffsetSpec.ofEpoch(epoch);
return this;
}
/**
* @return epoch offset as the number of number of milliseconds since January 1, 1970, 00:00:00
* GMT
*/
public long epoch() {
return epoch == null ? Jvm.getLong(QueueSystemProperties.DEFAULT_EPOCH_PROPERTY, 0L) : epoch;
}
/**
* @return BufferMode to use for writes. Only None is available is the OSS
*/
@NotNull
public BufferMode writeBufferMode() {
return wireType() == WireType.DELTA_BINARY ? BufferMode.None : (writeBufferMode == null)
? BufferMode.None : writeBufferMode;
}
/**
* When writeBufferMode is set to {@code Asynchronous}, uses a ring buffer to buffer appends, excerpts are written to the
* Chronicle Queue using a background thread.
* See also {@link #bufferCapacity()}
* See also software.chronicle.enterprise.ring.EnterpriseRingBuffer
*
* @param writeBufferMode bufferMode for writing
* @return this
*/
public SingleChronicleQueueBuilder writeBufferMode(BufferMode writeBufferMode) {
this.writeBufferMode = writeBufferMode;
return this;
}
/**
* @return BufferMode to use for reads. Only None is available is the OSS
*/
public BufferMode readBufferMode() {
return readBufferMode == null ? BufferMode.None : readBufferMode;
}
/**
* When readBufferMode is set to {@code Asynchronous}, reads from the ring buffer. This requires
* that {@link #writeBufferMode()} is also set to {@code Asynchronous}.
* See also {@link #bufferCapacity()}
* See also software.chronicle.enterprise.ring.EnterpriseRingBuffer
*
* @param readBufferMode BufferMode for read
* @return this
*/
public SingleChronicleQueueBuilder readBufferMode(BufferMode readBufferMode) {
this.readBufferMode = readBufferMode;
return this;
}
/**
* @return a new event loop instance if none has been set, otherwise the {@code eventLoop}
* that was set
*/
@NotNull
public EventLoop eventLoop() {
if (eventLoop == null)
return new OnDemandEventLoop(
() -> new MediumEventLoop(null, path.getName(), Pauser.busy(), true, "none"));
return eventLoop;
}
@NotNull
public SingleChronicleQueueBuilder eventLoop(EventLoop eventLoop) {
this.eventLoop = eventLoop;
return this;
}
/**
* @return if the ring buffer's monitoring capability is turned on. Not available in OSS
*/
public boolean enableRingBufferMonitoring() {
return enableRingBufferMonitoring != null && enableRingBufferMonitoring;
}
public SingleChronicleQueueBuilder enableRingBufferMonitoring(boolean enableRingBufferMonitoring) {
this.enableRingBufferMonitoring = enableRingBufferMonitoring;
return this;
}
/**
* default value is {@code false} since 5.21ea0
*
* @return if ring buffer reader processes can invoke the CQ drainer, otherwise only writer processes can
*/
public boolean ringBufferReaderCanDrain() {
return ringBufferReaderCanDrain != null && ringBufferReaderCanDrain;
}
public SingleChronicleQueueBuilder ringBufferReaderCanDrain(boolean ringBufferReaderCanDrain) {
this.ringBufferReaderCanDrain = ringBufferReaderCanDrain;
return this;
}
/**
* @return whether to force creating a reader (to recover from crash)
*/
public boolean ringBufferForceCreateReader() {
return ringBufferForceCreateReader != null && ringBufferForceCreateReader;
}
public SingleChronicleQueueBuilder ringBufferForceCreateReader(boolean ringBufferForceCreateReader) {
this.ringBufferForceCreateReader = ringBufferForceCreateReader;
return this;
}
/**
* @return if ring buffer readers are not reset on close. If true then re-opening a reader puts you back
* at the same place. If true, your reader can block writers if the reader is not open
*/
public boolean ringBufferReopenReader() {
return ringBufferReopenReader != null && ringBufferReopenReader;
}
public SingleChronicleQueueBuilder ringBufferReopenReader(boolean ringBufferReopenReader) {
this.ringBufferReopenReader = ringBufferReopenReader;
return this;
}
/**
* Priority for async mode drainer handler
*
* @return drainerPriority
*/
public HandlerPriority drainerPriority() {
return drainerPriority;
}
public SingleChronicleQueueBuilder drainerPriority(HandlerPriority drainerPriority) {
this.drainerPriority = drainerPriority;
return this;
}
public int drainerTimeoutMS() {
return drainerTimeoutMS <= 0 ? 10_000 : drainerTimeoutMS;
}
public SingleChronicleQueueBuilder drainerTimeoutMS(int timeout) {
drainerTimeoutMS = timeout;
return this;
}
/**
* Pauser supplier for the pauser to be used by ring buffer when waiting
*/
public Supplier ringBufferPauserSupplier() {
return ringBufferPauserSupplier == null ? Pauser::busy : ringBufferPauserSupplier;
}
public SingleChronicleQueueBuilder ringBufferPauserSupplier(Supplier ringBufferPauserSupplier) {
this.ringBufferPauserSupplier = ringBufferPauserSupplier;
return this;
}
public SingleChronicleQueueBuilder indexCount(int indexCount) {
this.indexCount = Maths.nextPower2(indexCount, 8);
return this;
}
public int indexCount() {
return indexCount == null || indexCount <= 0 ? rollCycle().defaultIndexCount() : indexCount;
}
public SingleChronicleQueueBuilder indexSpacing(int indexSpacing) {
this.indexSpacing = Maths.nextPower2(indexSpacing, 1);
return this;
}
public int indexSpacing() {
return indexSpacing == null || indexSpacing <= 0 ? rollCycle().defaultIndexSpacing() :
indexSpacing;
}
public TimeProvider timeProvider() {
return timeProvider == null ? SystemTimeProvider.INSTANCE : timeProvider;
}
public SingleChronicleQueueBuilder timeProvider(TimeProvider timeProvider) {
this.timeProvider = timeProvider;
return this;
}
public Supplier pauserSupplier() {
return pauserSupplier == null ? TIMING_PAUSER_SUPPLIER : pauserSupplier;
}
public SingleChronicleQueueBuilder pauserSupplier(Supplier pauser) {
this.pauserSupplier = pauser;
return this;
}
public SingleChronicleQueueBuilder timeoutMS(long timeoutMS) {
this.timeoutMS = timeoutMS;
return this;
}
public long timeoutMS() {
return timeoutMS == null ? 10_000L : timeoutMS;
}
public SingleChronicleQueueBuilder storeFileListener(StoreFileListener storeFileListener) {
this.storeFileListener = storeFileListener;
return this;
}
public StoreFileListener storeFileListener() {
return storeFileListener == null ? StoreFileListeners.DEBUG : storeFileListener;
}
public SingleChronicleQueueBuilder sourceId(int sourceId) {
if (sourceId < 0)
throw new IllegalArgumentException("Invalid source Id, must be positive");
this.sourceId = sourceId;
return this;
}
public int sourceId() {
return sourceId == null ? 0 : sourceId;
}
public boolean readOnly() {
return Boolean.TRUE.equals(readOnly) && !OS.isWindows();
}
public SingleChronicleQueueBuilder readOnly(boolean readOnly) {
if (OS.isWindows() && readOnly)
Jvm.warn().on(SingleChronicleQueueBuilder.class,
"Read-only mode is not supported on Windows® platforms, defaulting to read/write.");
else
this.readOnly = readOnly;
return this;
}
public boolean doubleBuffer() {
return doubleBuffer;
}
/**
*
* Enables double-buffered writes on contention.
*
* Normally, all writes to the queue will be serialized based on the write lock acquisition. Each time {@link ExcerptAppender#writingDocument()}
* is called, appender tries to acquire the write lock on the queue, and if it fails to do so it blocks until write
* lock is unlocked, and in turn locks the queue for itself.
*
* When double-buffering is enabled, if appender sees that the write lock is acquired upon {@link ExcerptAppender#writingDocument()} call,
* it returns immediately with a context pointing to the secondary buffer, and essentially defers lock acquisition
* until the context.close() is called (normally with try-with-resources pattern it is at the end of the try block),
* allowing user to go ahead writing data, and then essentially doing memcpy on the serialized data (thus reducing cost of serialization).
*
* This is only useful if (majority of) the objects being written to the queue are big enough AND their marshalling is not straight-forward
* (e.g. BytesMarshallable's marshalling is very efficient and quick and hence double-buffering will only slow things down), and if there's a
* heavy contention on writes (e.g. 2 or more threads writing a lot of data to the queue at a very high rate).
*/
public SingleChronicleQueueBuilder doubleBuffer(boolean doubleBuffer) {
this.doubleBuffer = doubleBuffer;
return this;
}
public Supplier, Bytes>> encodingSupplier() {
return encodingSupplier;
}
public Supplier, Bytes>> decodingSupplier() {
return decodingSupplier;
}
public SingleChronicleQueueBuilder codingSuppliers(@Nullable
Supplier, Bytes>> encodingSupplier,
@Nullable Supplier, Bytes>> decodingSupplier) {
if ((encodingSupplier == null) != (decodingSupplier == null))
throw new UnsupportedOperationException("Both encodingSupplier and decodingSupplier must be set or neither");
this.encodingSupplier = encodingSupplier;
this.decodingSupplier = decodingSupplier;
return this;
}
public SecretKeySpec key() {
return key;
}
protected void preBuild() {
try {
initializeMetadata();
} catch (Exception ex) {
Closeable.closeQuietly(metaStore);
throw ex;
}
if ((epoch == null || epoch == 0) && (rollTime != null && rollTimeZone != null))
rollTime(rollTime, rollTimeZone);
}
// *************************************************************************
//
// *************************************************************************
public boolean checkInterrupts() {
if (System.getProperties().contains("chronicle.queue.checkInterrupts"))
return Jvm.getBoolean("chronicle.queue.checkInterrupts");
return checkInterrupts;
}
public SingleChronicleQueueBuilder checkInterrupts(boolean checkInterrupts) {
this.checkInterrupts = checkInterrupts;
return this;
}
public long forceDirectoryListingRefreshIntervalMs() {
return forceDirectoryListingRefreshIntervalMs;
}
public SingleChronicleQueueBuilder forceDirectoryListingRefreshIntervalMs(long forceDirectoryListingRefreshIntervalMs) {
this.forceDirectoryListingRefreshIntervalMs = forceDirectoryListingRefreshIntervalMs;
return this;
}
/**
* WARNING: Avoid using this method as it can have unintended consequences.
* We plan to phase it out.
* It's only a shallow copy so field will have the same objects.
*/
public SingleChronicleQueueBuilder clone() {
try {
return (SingleChronicleQueueBuilder) super.clone();
} catch (Exception e) {
throw new AssertionError(e);
}
}
/**
* updates all the fields in {@code this} that are null, from the parentBuilder
*
* @param parentBuilder the parentBuilder Chronicle Queue Builder
* @return that
*/
public SingleChronicleQueueBuilder setAllNullFields(@Nullable SingleChronicleQueueBuilder parentBuilder) {
if (parentBuilder == null)
return this;
if (!(this.getClass().isAssignableFrom(parentBuilder.getClass()) || parentBuilder.getClass().isAssignableFrom(this.getClass())))
throw new IllegalArgumentException("Classes are not in same implementation hierarchy");
List sourceFieldInfo = Wires.fieldInfos(parentBuilder.getClass());
for (final FieldInfo fieldInfo : Wires.fieldInfos(this.getClass())) {
if (!sourceFieldInfo.contains(fieldInfo))
continue;
Object resultV = fieldInfo.get(this);
Object parentV = fieldInfo.get(parentBuilder);
if (resultV == null && parentV != null)
fieldInfo.set(this, parentV);
}
return this;
}
public WriteLock appendLock() {
return readOnly() ? WriteLock.NO_OP : new AppendLock(metaStore, pauserSupplier(), timeoutMS() * 3 / 2);
}
/**
* Set an AppenderListener which is called when an Excerpt is actually written.
* This is called while the writeLock is still held, after the messages has been written.
* For asynchronous writes, this is called in the background thread.
*
* @param appenderListener to call
* @return this
*/
public SingleChronicleQueueBuilder appenderListener(AppenderListener appenderListener) {
this.appenderListener = appenderListener;
return this;
}
public AppenderListener appenderListener() {
return appenderListener;
}
public SingleChronicleQueueBuilder syncMode(SyncMode syncMode) {
this.syncMode = syncMode;
return this;
}
public SyncMode syncMode() {
return syncMode == null ? MappedFile.DEFAULT_SYNC_MODE : syncMode;
}
enum DefaultPauserSupplier implements Supplier {
INSTANCE;
@Override
public TimingPauser get() {
return new YieldingPauser(500_000);
}
}
}