org.apache.cassandra.locator

Class AbstractReplicationStrategy

java.lang.Object

org.apache.cassandra.locator.AbstractReplicationStrategy

Direct Known Subclasses:

LocalStrategy, NetworkTopologyStrategy, OldNetworkTopologyStrategy, SimpleStrategy

public abstract class AbstractReplicationStrategy
extends java.lang.Object

A abstract parent for all replication strategies.

Field Summary

Fields

Modifier and Type	Field and Description
java.util.Map<java.lang.String,java.lang.String>	configOptions
IEndpointSnitch	snitch

Method Summary

Modifier and Type	Method and Description
abstract java.util.List<java.net.InetAddress>	calculateNaturalEndpoints(Token searchToken, TokenMetadata tokenMetadata) calculate the natural endpoints for the given token
static AbstractReplicationStrategy	createReplicationStrategy(java.lang.String keyspaceName, java.lang.Class<? extends AbstractReplicationStrategy> strategyClass, TokenMetadata tokenMetadata, IEndpointSnitch snitch, java.util.Map<java.lang.String,java.lang.String> strategyOptions)
com.google.common.collect.Multimap<java.net.InetAddress,Range<Token>>	getAddressRanges()
com.google.common.collect.Multimap<java.net.InetAddress,Range<Token>>	getAddressRanges(TokenMetadata metadata)
java.util.ArrayList<java.net.InetAddress>	getCachedEndpoints(Token t)
static java.lang.Class<AbstractReplicationStrategy>	getClass(java.lang.String cls)
java.util.ArrayList<java.net.InetAddress>	getNaturalEndpoints(RingPosition searchPosition) get the (possibly cached) endpoints that should store the given Token.
java.util.Collection<Range<Token>>	getPendingAddressRanges(TokenMetadata metadata, java.util.Collection<Token> pendingTokens, java.net.InetAddress pendingAddress)
java.util.Collection<Range<Token>>	getPendingAddressRanges(TokenMetadata metadata, Token pendingToken, java.net.InetAddress pendingAddress)
com.google.common.collect.Multimap<Range<Token>,java.net.InetAddress>	getRangeAddresses(TokenMetadata metadata)
abstract int	getReplicationFactor() calculate the RF based on strategy_options.
<T> AbstractWriteResponseHandler<T>	getWriteResponseHandler(java.util.Collection<java.net.InetAddress> naturalEndpoints, java.util.Collection<java.net.InetAddress> pendingEndpoints, ConsistencyLevel consistency_level, java.lang.Runnable callback, WriteType writeType)
java.util.Collection<java.lang.String>	recognizedOptions()
abstract void	validateOptions()
protected void	validateReplicationFactor(java.lang.String rf)
static void	validateReplicationStrategy(java.lang.String keyspaceName, java.lang.Class<? extends AbstractReplicationStrategy> strategyClass, TokenMetadata tokenMetadata, IEndpointSnitch snitch, java.util.Map<java.lang.String,java.lang.String> strategyOptions)

Methods inherited from class java.lang.Object

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

Field Detail

configOptions

public final java.util.Map<java.lang.String,java.lang.String> configOptions

snitch

public IEndpointSnitch snitch

Method Detail

getCachedEndpoints

public java.util.ArrayList<java.net.InetAddress> getCachedEndpoints(Token t)

getNaturalEndpoints

public java.util.ArrayList<java.net.InetAddress> getNaturalEndpoints(RingPosition searchPosition)

get the (possibly cached) endpoints that should store the given Token. Note that while the endpoints are conceptually a Set (no duplicates will be included), we return a List to avoid an extra allocation when sorting by proximity later

Parameters:

searchPosition - the position the natural endpoints are requested for

Returns:

a copy of the natural endpoints for the given token

calculateNaturalEndpoints

public abstract java.util.List<java.net.InetAddress> calculateNaturalEndpoints(Token searchToken,
                                                                               TokenMetadata tokenMetadata)

calculate the natural endpoints for the given token

Parameters:

searchToken - the token the natural endpoints are requested for

Returns:

a copy of the natural endpoints for the given token

See Also:

getNaturalEndpoints(org.apache.cassandra.dht.RingPosition)

getWriteResponseHandler

public <T> AbstractWriteResponseHandler<T> getWriteResponseHandler(java.util.Collection<java.net.InetAddress> naturalEndpoints,
                                                                   java.util.Collection<java.net.InetAddress> pendingEndpoints,
                                                                   ConsistencyLevel consistency_level,
                                                                   java.lang.Runnable callback,
                                                                   WriteType writeType)

getReplicationFactor

public abstract int getReplicationFactor()

calculate the RF based on strategy_options. When overwriting, ensure that this get() is FAST, as this is called often.

Returns:

the replication factor

getAddressRanges

public com.google.common.collect.Multimap<java.net.InetAddress,Range<Token>> getAddressRanges(TokenMetadata metadata)

getRangeAddresses

public com.google.common.collect.Multimap<Range<Token>,java.net.InetAddress> getRangeAddresses(TokenMetadata metadata)

getAddressRanges

public com.google.common.collect.Multimap<java.net.InetAddress,Range<Token>> getAddressRanges()

getPendingAddressRanges

public java.util.Collection<Range<Token>> getPendingAddressRanges(TokenMetadata metadata,
                                                                  Token pendingToken,
                                                                  java.net.InetAddress pendingAddress)

getPendingAddressRanges

public java.util.Collection<Range<Token>> getPendingAddressRanges(TokenMetadata metadata,
                                                                  java.util.Collection<Token> pendingTokens,
                                                                  java.net.InetAddress pendingAddress)

validateOptions

public abstract void validateOptions()
                              throws ConfigurationException

Throws:

ConfigurationException

recognizedOptions

public java.util.Collection<java.lang.String> recognizedOptions()

createReplicationStrategy

public static AbstractReplicationStrategy createReplicationStrategy(java.lang.String keyspaceName,
                                                                    java.lang.Class<? extends AbstractReplicationStrategy> strategyClass,
                                                                    TokenMetadata tokenMetadata,
                                                                    IEndpointSnitch snitch,
                                                                    java.util.Map<java.lang.String,java.lang.String> strategyOptions)

validateReplicationStrategy

public static void validateReplicationStrategy(java.lang.String keyspaceName,
                                               java.lang.Class<? extends AbstractReplicationStrategy> strategyClass,
                                               TokenMetadata tokenMetadata,
                                               IEndpointSnitch snitch,
                                               java.util.Map<java.lang.String,java.lang.String> strategyOptions)
                                        throws ConfigurationException

Throws:

ConfigurationException

getClass

public static java.lang.Class<AbstractReplicationStrategy> getClass(java.lang.String cls)
                                                             throws ConfigurationException

Throws:

ConfigurationException

validateReplicationFactor

protected void validateReplicationFactor(java.lang.String rf)
                                  throws ConfigurationException

Throws:

ConfigurationException