org.rhq.cassandra.schema

Class SchemaManager

java.lang.Object

org.rhq.cassandra.schema.SchemaManager

public class SchemaManager
extends Object

Author:

John Sanda

Constructor Summary

Constructors

Constructor and Description
SchemaManager(String username, String password, List<String> nodes, int cqlPort)
SchemaManager(String username, String password, String[] nodes, int cqlPort)

Method Summary

Methods

Modifier and Type	Method and Description
void	checkCompatibility() Check the existing storage cluster schema version to ensure it is compatible with the current installation.
void	drop() Drop storage cluster schema and revert the storage cluster to pre-RHQ state.
protected String[]	getStorageNodes() Returns the list of storage nodes.
void	install() Install and update the storage cluster schema.
static void	main(String[] args) A main runner used for direct usage of the schema manager.
void	updateTopology() Update cluster topology settings, such as replication factor.

Methods inherited from class java.lang.Object

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

Constructor Detail

SchemaManager

public SchemaManager(String username,
             String password,
             String[] nodes,
             int cqlPort)

Parameters:

username - The username RHQ will use to connect to the storage cluster

password - The password RHQ will use to connect to the storage cluster

nodes - A list of seeds nodes that are assumed to be already running and clustered prior to apply schema changes.

cqlPort - The native CQL port for the storage cluster

SchemaManager

public SchemaManager(String username,
             String password,
             List<String> nodes,
             int cqlPort)

Parameters:

username - The username RHQ will use to connect to the storage cluster.

password - The password RHQ will use to connect to the storage cluster.

nodes - A list of seeds nodes that are assumed to be already running and clustered prior to apply schema changes.

cqlPort - The native CQL port for the storage cluster

Method Detail

install

public void install()
             throws Exception

Install and update the storage cluster schema.

Throws:

Exception

checkCompatibility

public void checkCompatibility()
                        throws Exception

Check the existing storage cluster schema version to ensure it is compatible with the current installation.

Throws:

Exception

drop

public void drop()
          throws Exception

Drop storage cluster schema and revert the storage cluster to pre-RHQ state.

Throws:

Exception

updateTopology

public void updateTopology()
                    throws Exception

Update cluster topology settings, such as replication factor.

Parameters:

isNewSchema -

Throws:

Exception

getStorageNodes

protected String[] getStorageNodes()

Returns the list of storage nodes.

Returns:

list of storage nodes

main

public static void main(String[] args)
                 throws Exception

A main runner used for direct usage of the schema manager.

Parameters:

args - arguments

Throws:

Exception