Package com.twitter.chill.config

Class ConfiguredInstantiator

java.lang.Object

com.twitter.chill.KryoInstantiator

com.twitter.chill.config.ConfiguredInstantiator

All Implemented Interfaces:

Serializable

public class ConfiguredInstantiator
extends KryoInstantiator

This is the standard Config based KryoInstantiator. It delegates to another KryoInstantiator that is described a Config object. This is either done via reflection or reflection AND serialization. If the KEY is not set, the delegate is the default: new KryoInstantiator() In the case of reflection, the class name of the delegate instantiator is given. In the case of serialization, we first reflect to create the KryoInstatiator we use to get the Kryo we need to deserialize.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final KryoInstantiator	delegate
static final String	KEY	Key we use to configure this class.

Constructor Summary

Constructors

Constructor	Description
ConfiguredInstantiator(Config conf)

Method Summary

Modifier and Type	Method	Description
protected static KryoInstantiator	deserialize(com.esotericsoftware.kryo.kryo5.Kryo k, String base64Value)
static String[]	fastSplitKey(String key)	Java's string split is very expensive due to regexes.
KryoInstantiator	getDelegate()	Return the delegated KryoInstantiator
com.esotericsoftware.kryo.kryo5.Kryo	newKryo()	Calls through to the delegate
protected static String	serialize(com.esotericsoftware.kryo.kryo5.Kryo k, KryoInstantiator ki)
static void	setReflect(Config conf, Class<? extends KryoInstantiator> instClass)	In this mode, we are just refecting to another delegated class.
static void	setSerialized(Config conf, KryoInstantiator ki)	Use the default KryoInstantiator to serialize the KryoInstantiator ki same as: setSerialized(conf, KryoInstantiator.class, ki)
static void	setSerialized(Config conf, Class<? extends KryoInstantiator> reflector, KryoInstantiator ki)	If this reflector needs config to be set, that should be done PRIOR to making this call.

Methods inherited from class com.twitter.chill.KryoInstantiator

setClassLoader, setInstantiatorStrategy, setReferences, setRegistrationRequired, setThreadContextClassLoader, withRegistrar

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

delegate

protected final KryoInstantiator delegate

KEY

public static final String KEY

Key we use to configure this class. Format: <class of KryoInstantiator>(:<base64 serialized instantiator>) if there is no serialized instantiator, we use the reflected instance as the delegate

See Also:

• Constant Field Values

Constructor Details

ConfiguredInstantiator

public ConfiguredInstantiator(Config conf)
                       throws ConfigurationException

Throws:

ConfigurationException

Method Details

newKryo

public com.esotericsoftware.kryo.kryo5.Kryo newKryo()

Calls through to the delegate

Overrides:

newKryo in class KryoInstantiator

getDelegate

public KryoInstantiator getDelegate()

Return the delegated KryoInstantiator

setReflect

public static void setReflect(Config conf,
 Class<? extends KryoInstantiator> instClass)

In this mode, we are just refecting to another delegated class. This is preferred if you don't have any configuration to do at runtime (i.e. you can make a named class that has all the logic for your KryoInstantiator).

setSerialized

public static void setSerialized(Config conf,
 KryoInstantiator ki)
                          throws ConfigurationException

Use the default KryoInstantiator to serialize the KryoInstantiator ki same as: setSerialized(conf, KryoInstantiator.class, ki)

Throws:

ConfigurationException

setSerialized

public static void setSerialized(Config conf,
 Class<? extends KryoInstantiator> reflector,
 KryoInstantiator ki)
                          throws ConfigurationException

If this reflector needs config to be set, that should be done PRIOR to making this call. This mode serializes an instance (ki) to be used as the delegate. Only use this mode if reflection alone will not work.

Throws:

ConfigurationException

deserialize

protected static KryoInstantiator deserialize(com.esotericsoftware.kryo.kryo5.Kryo k,
 String base64Value)
                                       throws ConfigurationException

Throws:

ConfigurationException

serialize

protected static String serialize(com.esotericsoftware.kryo.kryo5.Kryo k,
 KryoInstantiator ki)

fastSplitKey

public static String[] fastSplitKey(String key)

Java's string split is very expensive due to regexes. Implement our own simple version instead.