com.singlestore.jdbc.client.impl

Class MultiPrimaryReplicaClient

java.lang.Object

com.singlestore.jdbc.client.impl.MultiPrimaryClient

com.singlestore.jdbc.client.impl.MultiPrimaryReplicaClient

All Implemented Interfaces:

com.singlestore.jdbc.client.Client, AutoCloseable

public class MultiPrimaryReplicaClient
extends MultiPrimaryClient

Handling connection failing automatic reconnection transparently when possible for replication Topology.

remark: would have been better using proxy, but for AOT compilation, avoiding to using not supported proxy class.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	waitTimeout timeout before retrying to reconnect failing host

Fields inherited from class com.singlestore.jdbc.client.impl.MultiPrimaryClient

closed, conf, currentClient, deniedListTimeout, denyList, lock

Constructor Summary

Constructors

Constructor and Description
MultiPrimaryReplicaClient(Configuration conf, ReentrantLock lock) Constructor

Method Summary

Modifier and Type	Method and Description
void	abort(Executor executor) Abort current connection
void	close() Close client
void	closePrepare(Prepare prepare) Close prepare command
List<com.singlestore.jdbc.client.Completion>	execute(com.singlestore.jdbc.message.ClientMessage message, Statement stmt, int fetchSize, long maxRows, int resultSetConcurrency, int resultSetType, boolean closeOnCompletion, boolean canRedo) Send client message and read result
List<com.singlestore.jdbc.client.Completion>	executePipeline(com.singlestore.jdbc.message.ClientMessage[] messages, Statement stmt, int fetchSize, long maxRows, int resultSetConcurrency, int resultSetType, boolean closeOnCompletion, boolean canRedo) Send client messages pipelining and read result
com.singlestore.jdbc.client.Context	getContext() Get connection context
ExceptionFactory	getExceptionFactory() Get connection exception factory
HostAddress	getHostAddress() Get connection host
int	getSocketTimeout() get socket timeout
boolean	isPrimary() is current client writer or read-only
void	readStreamingResults(List<com.singlestore.jdbc.client.Completion> completions, int fetchSize, long maxRows, int resultSetConcurrency, int resultSetType, boolean closeOnCompletion) Read results
protected com.singlestore.jdbc.client.Client	reConnect() Reconnect connection, trying to continue transparently if possible.
void	reset() Reset connection
void	setReadOnly(boolean readOnly) Switch to a writer/read-only connection, no effet on mono-connection
void	setSocketTimeout(int milliseconds) Set socket timeout

Methods inherited from class com.singlestore.jdbc.client.impl.MultiPrimaryClient

connectHost, execute, execute, executeTransactionReplay, isClosed, replayIfPossible, syncNewState

Methods inherited from class java.lang.Object

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

Field Detail

waitTimeout

protected long waitTimeout

timeout before retrying to reconnect failing host

Constructor Detail

MultiPrimaryReplicaClient

public MultiPrimaryReplicaClient(Configuration conf,
                                 ReentrantLock lock)
                          throws SQLException

Constructor

Parameters:

conf - configuration

lock - thread locker

Throws:

SQLException - if any error occurs

Method Detail

reConnect

protected com.singlestore.jdbc.client.Client reConnect()
                                                throws SQLException

Reconnect connection, trying to continue transparently if possible. Different cases. * replica fails => reconnect to replica or to master if no replica available

if reconnect succeed on replica / use master, no problem, continuing without interruption // if reconnect primary, then replay transaction / throw exception if was in transaction.

Overrides:

reConnect in class MultiPrimaryClient

Returns:

client connection

Throws:

SQLException - if exception

execute

public List<com.singlestore.jdbc.client.Completion> execute(com.singlestore.jdbc.message.ClientMessage message,
                                                            Statement stmt,
                                                            int fetchSize,
                                                            long maxRows,
                                                            int resultSetConcurrency,
                                                            int resultSetType,
                                                            boolean closeOnCompletion,
                                                            boolean canRedo)
                                                     throws SQLException

Description copied from interface: com.singlestore.jdbc.client.Client

Send client message and read result

Specified by:

execute in interface com.singlestore.jdbc.client.Client

Overrides:

execute in class MultiPrimaryClient

Parameters:

message - client message

stmt - statement

fetchSize - fetch size

maxRows - maximum number of rows. 0 = all

resultSetConcurrency - concurrency

resultSetType - result-set type

closeOnCompletion - close statement on completion

canRedo - can client message be redone in case of failover

Returns:

results

Throws:

SQLException - if any error occurs

executePipeline

public List<com.singlestore.jdbc.client.Completion> executePipeline(com.singlestore.jdbc.message.ClientMessage[] messages,
                                                                    Statement stmt,
                                                                    int fetchSize,
                                                                    long maxRows,
                                                                    int resultSetConcurrency,
                                                                    int resultSetType,
                                                                    boolean closeOnCompletion,
                                                                    boolean canRedo)
                                                             throws SQLException

Description copied from interface: com.singlestore.jdbc.client.Client

Send client messages pipelining and read result

Specified by:

executePipeline in interface com.singlestore.jdbc.client.Client

Overrides:

executePipeline in class MultiPrimaryClient

Parameters:

messages - client message

stmt - statement

fetchSize - fetch size

maxRows - maximum number of rows. 0 = all

resultSetConcurrency - concurrency

resultSetType - result-set type

closeOnCompletion - close statement on completion

canRedo - can client message be redone in case of failover

Returns:

results

Throws:

SQLException - if any error occurs

readStreamingResults

public void readStreamingResults(List<com.singlestore.jdbc.client.Completion> completions,
                                 int fetchSize,
                                 long maxRows,
                                 int resultSetConcurrency,
                                 int resultSetType,
                                 boolean closeOnCompletion)
                          throws SQLException

Description copied from interface: com.singlestore.jdbc.client.Client

Read results

Specified by:

readStreamingResults in interface com.singlestore.jdbc.client.Client

Overrides:

readStreamingResults in class MultiPrimaryClient

Parameters:

completions - List that will have the new results

fetchSize - fetch size

maxRows - maximum number of rows. 0 = all

resultSetConcurrency - concurrency

resultSetType - result-set type

closeOnCompletion - close statement on completion

Throws:

SQLException - if any error occurs

closePrepare

public void closePrepare(Prepare prepare)
                  throws SQLException

Description copied from interface: com.singlestore.jdbc.client.Client

Close prepare command

Specified by:

closePrepare in interface com.singlestore.jdbc.client.Client

Overrides:

closePrepare in class MultiPrimaryClient

Parameters:

prepare - prepare command

Throws:

SQLException - if any error occurs

abort

public void abort(Executor executor)
           throws SQLException

Description copied from interface: com.singlestore.jdbc.client.Client

Abort current connection

Specified by:

abort in interface com.singlestore.jdbc.client.Client

Overrides:

abort in class MultiPrimaryClient

Parameters:

executor - executor

Throws:

SQLException - if any error occurs

close

public void close()

Description copied from interface: com.singlestore.jdbc.client.Client

Close client

Specified by:

close in interface com.singlestore.jdbc.client.Client

Specified by:

close in interface AutoCloseable

Overrides:

close in class MultiPrimaryClient

setReadOnly

public void setReadOnly(boolean readOnly)
                 throws SQLException

Description copied from interface: com.singlestore.jdbc.client.Client

Switch to a writer/read-only connection, no effet on mono-connection

Specified by:

setReadOnly in interface com.singlestore.jdbc.client.Client

Overrides:

setReadOnly in class MultiPrimaryClient

Parameters:

readOnly - must use read-only connection

Throws:

SQLException - if any error occurs

getSocketTimeout

public int getSocketTimeout()

Description copied from interface: com.singlestore.jdbc.client.Client

get socket timeout

Specified by:

getSocketTimeout in interface com.singlestore.jdbc.client.Client

Overrides:

getSocketTimeout in class MultiPrimaryClient

Returns:

socket timeout

setSocketTimeout

public void setSocketTimeout(int milliseconds)
                      throws SQLException

Description copied from interface: com.singlestore.jdbc.client.Client

Set socket timeout

Specified by:

setSocketTimeout in interface com.singlestore.jdbc.client.Client

Overrides:

setSocketTimeout in class MultiPrimaryClient

Parameters:

milliseconds - timeout

Throws:

SQLException - if any error occurs

getContext

public com.singlestore.jdbc.client.Context getContext()

Description copied from interface: com.singlestore.jdbc.client.Client

Get connection context

Specified by:

getContext in interface com.singlestore.jdbc.client.Client

Overrides:

getContext in class MultiPrimaryClient

Returns:

connection context

getExceptionFactory

public ExceptionFactory getExceptionFactory()

Description copied from interface: com.singlestore.jdbc.client.Client

Get connection exception factory

Specified by:

getExceptionFactory in interface com.singlestore.jdbc.client.Client

Overrides:

getExceptionFactory in class MultiPrimaryClient

Returns:

connection exception factory

getHostAddress

public HostAddress getHostAddress()

Description copied from interface: com.singlestore.jdbc.client.Client

Get connection host

Specified by:

getHostAddress in interface com.singlestore.jdbc.client.Client

Overrides:

getHostAddress in class MultiPrimaryClient

Returns:

connection host

isPrimary

public boolean isPrimary()

Description copied from interface: com.singlestore.jdbc.client.Client

is current client writer or read-only

Specified by:

isPrimary in interface com.singlestore.jdbc.client.Client

Overrides:

isPrimary in class MultiPrimaryClient

Returns:

is primary

reset

public void reset()

Description copied from interface: com.singlestore.jdbc.client.Client

Reset connection

Specified by:

reset in interface com.singlestore.jdbc.client.Client

Overrides:

reset in class MultiPrimaryClient