com.vesoft.nebula.client.meta

Class MetaManager

java.lang.Object

com.vesoft.nebula.client.meta.MetaManager

All Implemented Interfaces:

MetaCache

public class MetaManager
extends Object
implements MetaCache

MetaManager is a manager for meta info, such as spaces,tags and edges.

Constructor Summary

Constructors

Constructor and Description
MetaManager(List<HostAddress> address) init the meta info cache
MetaManager(List<HostAddress> address, int timeout, int connectionRetry, int executionRetry, boolean enableSSL, SSLParam sslParam) init the meta info cache with more config

Method Summary

Modifier and Type	Method and Description
void	close() close meta client
int	getConnectionRetry()
EdgeItem	getEdge(String spaceName, String edgeName) get Edge
int	getEdgeType(String spaceName, String edgeName) get edge type
int	getExecutionRetry()
HostAddr	getLeader(String spaceName, int part) get part leader
Map<Integer,List<HostAddr>>	getPartsAlloc(String spaceName) get all parts alloc of one space
SpaceItem	getSpace(String spaceName) get space item
int	getSpaceId(String spaceName) get space id
List<Integer>	getSpaceParts(String spaceName) get all parts of one space
TagItem	getTag(String spaceName, String tagName) get tag
int	getTagId(String spaceName, String tagName) get tag id
int	getTimeout()
Set<HostAddr>	listHosts() get all storage addresses
void	updateLeader(String spaceName, int part, HostAddr newLeader) cache new leader for part

Methods inherited from class java.lang.Object

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

Constructor Detail

MetaManager

public MetaManager(List<HostAddress> address)
            throws com.facebook.thrift.TException,
                   ClientServerIncompatibleException,
                   UnknownHostException

init the meta info cache

Throws:

com.facebook.thrift.TException

ClientServerIncompatibleException

UnknownHostException

MetaManager

public MetaManager(List<HostAddress> address,
                   int timeout,
                   int connectionRetry,
                   int executionRetry,
                   boolean enableSSL,
                   SSLParam sslParam)
            throws com.facebook.thrift.TException,
                   ClientServerIncompatibleException,
                   UnknownHostException

init the meta info cache with more config

Throws:

com.facebook.thrift.TException

ClientServerIncompatibleException

UnknownHostException

Method Detail

close

public void close()

close meta client

getSpaceId

public int getSpaceId(String spaceName)
               throws IllegalArgumentException

get space id

Parameters:

spaceName - nebula space name

Returns:

Throws:

IllegalArgumentException

getSpace

public SpaceItem getSpace(String spaceName)
                   throws IllegalArgumentException

get space item

Specified by:

getSpace in interface MetaCache

Parameters:

spaceName - nebula graph space name

Returns:

SpaceItem

Throws:

IllegalArgumentException

getTagId

public int getTagId(String spaceName,
                    String tagName)
             throws IllegalArgumentException

get tag id

Parameters:

spaceName - nebula graph space name

tagName - nebula tag name

Returns:

int

Throws:

IllegalArgumentException

getTag

public TagItem getTag(String spaceName,
                      String tagName)
               throws IllegalArgumentException

get tag

Specified by:

getTag in interface MetaCache

Parameters:

spaceName - nebula space name

tagName - nebula tag name

Returns:

Throws:

IllegalArgumentException

getEdgeType

public int getEdgeType(String spaceName,
                       String edgeName)
                throws IllegalArgumentException

get edge type

Parameters:

spaceName - nebula graph space name

edgeName - nebula edge name

Returns:

long

Throws:

IllegalArgumentException

getEdge

public EdgeItem getEdge(String spaceName,
                        String edgeName)
                 throws IllegalArgumentException

get Edge

Specified by:

getEdge in interface MetaCache

Parameters:

spaceName - nebula graph space name

edgeName - nebula edge name

Returns:

Throws:

IllegalArgumentException

getLeader

public HostAddr getLeader(String spaceName,
                          int part)
                   throws IllegalArgumentException

get part leader

Parameters:

spaceName - nebula graph space name

part - nebula part id

Returns:

leader

Throws:

IllegalArgumentException

getSpaceParts

public List<Integer> getSpaceParts(String spaceName)
                            throws IllegalArgumentException

get all parts of one space

Parameters:

spaceName - nebula graph space name

Returns:

Lsit

Throws:

IllegalArgumentException

getPartsAlloc

public Map<Integer,List<HostAddr>> getPartsAlloc(String spaceName)
                                          throws IllegalArgumentException

get all parts alloc of one space

Specified by:

getPartsAlloc in interface MetaCache

Parameters:

spaceName - nebula graph space name

Returns:

Map

Throws:

IllegalArgumentException

updateLeader

public void updateLeader(String spaceName,
                         int part,
                         HostAddr newLeader)
                  throws IllegalArgumentException

cache new leader for part

Parameters:

spaceName - nebula graph space

part - nebula part

newLeader - nebula part new leader

Throws:

IllegalArgumentException

listHosts

public Set<HostAddr> listHosts()

get all storage addresses

getConnectionRetry

public int getConnectionRetry()

getTimeout

public int getTimeout()

getExecutionRetry

public int getExecutionRetry()