Package com.clickhouse.client

Class ClickHouseNodeSelector

java.lang.Object

com.clickhouse.client.ClickHouseNodeSelector

All Implemented Interfaces:

Serializable

public class ClickHouseNodeSelector
extends Object
implements Serializable

This class maintains two immutable lists: preferred protocols and tags. Usually it will be used in two scenarios: 1) find suitable ClickHouseClient according to preferred protocol(s); and 2) pick suitable ClickHouseNode to connect to.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static ClickHouseNodeSelector	EMPTY

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ClickHouseNodeSelector(Collection<ClickHouseProtocol> protocols, Collection<String> tags)

Method Summary

Modifier and Type	Method	Description
List<ClickHouseProtocol>	getPreferredProtocols()
Set<String>	getPreferredTags()
boolean	match(ClickHouseClient client)	Test if the given client supports any of getPreferredProtocols().
boolean	match(ClickHouseNode node)
boolean	matchAllPreferredTags(Collection<String> tags)
boolean	matchAnyOfPreferredProtocols(ClickHouseProtocol protocol)
boolean	matchAnyOfPreferredTags(Collection<String> tags)
static ClickHouseNodeSelector	of(ClickHouseProtocol protocol, ClickHouseProtocol... more)
static ClickHouseNodeSelector	of(String tag, String... more)
static ClickHouseNodeSelector	of(Collection<ClickHouseProtocol> protocols, Collection<String> tags)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

public static final ClickHouseNodeSelector EMPTY

Constructor Detail

ClickHouseNodeSelector

protected ClickHouseNodeSelector(Collection<ClickHouseProtocol> protocols,
                                 Collection<String> tags)

Method Detail

of

public static ClickHouseNodeSelector of(ClickHouseProtocol protocol,
                                        ClickHouseProtocol... more)

of

public static ClickHouseNodeSelector of(String tag,
                                        String... more)

of

public static ClickHouseNodeSelector of(Collection<ClickHouseProtocol> protocols,
                                        Collection<String> tags)

getPreferredProtocols

public List<ClickHouseProtocol> getPreferredProtocols()

getPreferredTags

public Set<String> getPreferredTags()

match

public boolean match(ClickHouseClient client)

Test if the given client supports any of getPreferredProtocols(). It's always false if either the client is null or there's no preferred protocol.

Parameters:

client - client to test

Returns:

true if any of the preferred protocols is supported by the client

match

public boolean match(ClickHouseNode node)

matchAnyOfPreferredProtocols

public boolean matchAnyOfPreferredProtocols(ClickHouseProtocol protocol)

matchAllPreferredTags

public boolean matchAllPreferredTags(Collection<String> tags)

matchAnyOfPreferredTags

public boolean matchAnyOfPreferredTags(Collection<String> tags)