com.github.housepower.jdbc

Class BalancedClickhouseDataSource

java.lang.Object

com.github.housepower.jdbc.BalancedClickhouseDataSource

All Implemented Interfaces:

SQLWrapper, Wrapper, CommonDataSource, DataSource

public final class BalancedClickhouseDataSource
extends Object
implements DataSource, SQLWrapper

Database for clickhouse jdbc connections.

It has list of database urls. For every getConnection invocation, it returns connection to random host from the list. Furthermore, this class has method { #scheduleActualization(int, TimeUnit) scheduleActualization} which test hosts for availability. By default, this option is turned off.

Constructor Summary

Constructors

Constructor and Description
BalancedClickhouseDataSource(String url) create Datasource for clickhouse JDBC connections
BalancedClickhouseDataSource(String url, Map<SettingKey,Serializable> settings) create Datasource for clickhouse JDBC connections
BalancedClickhouseDataSource(String url, Properties properties) create Datasource for clickhouse JDBC connections

Method Summary

Modifier and Type	Method and Description
List<String>	getAllClickhouseUrls()
ClickHouseConfig	getCfg()
ClickHouseConnection	getConnection()
ClickHouseConnection	getConnection(String user, String password)
List<String>	getDisabledUrls()
List<String>	getEnabledClickHouseUrls()
int	getLoginTimeout()
PrintWriter	getLogWriter()
Logger	getParentLogger()
boolean	hasDisabledUrls()
void	setLoginTimeout(int seconds)
void	setLogWriter(PrintWriter printWriter)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.github.housepower.jdbc.wrapper.SQLWrapper

isWrapperFor, unwrap

Constructor Detail

BalancedClickhouseDataSource

public BalancedClickhouseDataSource(String url)

create Datasource for clickhouse JDBC connections

Parameters:

url - address for connection to the database, must have the next format jdbc:clickhouse://<first-host>:<port>,<second-host>:<port>/<database>?param1=value1&param2=value2 for example, jdbc:clickhouse://localhost:9000,localhost:9000/database?compress=1&decompress=2

Throws:

IllegalArgumentException - if param have not correct format, or error happens when checking host availability

BalancedClickhouseDataSource

public BalancedClickhouseDataSource(String url,
                                    Properties properties)

create Datasource for clickhouse JDBC connections

Parameters:

url - address for connection to the database

properties - database properties

See Also:

BalancedClickhouseDataSource(String)

BalancedClickhouseDataSource

public BalancedClickhouseDataSource(String url,
                                    Map<SettingKey,Serializable> settings)

create Datasource for clickhouse JDBC connections

Parameters:

url - address for connection to the database

settings - clickhouse settings

See Also:

BalancedClickhouseDataSource(String)

Method Detail

getConnection

public ClickHouseConnection getConnection()
                                   throws SQLException

Specified by:

getConnection in interface DataSource

Throws:

SQLException

getConnection

public ClickHouseConnection getConnection(String user,
                                          String password)
                                   throws SQLException

Specified by:

getConnection in interface DataSource

Throws:

SQLException

getLogWriter

public PrintWriter getLogWriter()
                         throws SQLException

Specified by:

getLogWriter in interface CommonDataSource

Throws:

SQLException

setLogWriter

public void setLogWriter(PrintWriter printWriter)
                  throws SQLException

Specified by:

setLogWriter in interface CommonDataSource

Throws:

SQLException

setLoginTimeout

public void setLoginTimeout(int seconds)
                     throws SQLException

Specified by:

setLoginTimeout in interface CommonDataSource

Throws:

SQLException

getLoginTimeout

public int getLoginTimeout()
                    throws SQLException

Specified by:

getLoginTimeout in interface CommonDataSource

Throws:

SQLException

getParentLogger

public Logger getParentLogger()
                       throws SQLFeatureNotSupportedException

Specified by:

getParentLogger in interface CommonDataSource

Throws:

SQLFeatureNotSupportedException

getAllClickhouseUrls

public List<String> getAllClickhouseUrls()

getEnabledClickHouseUrls

public List<String> getEnabledClickHouseUrls()

getDisabledUrls

public List<String> getDisabledUrls()

hasDisabledUrls

public boolean hasDisabledUrls()

getCfg

public ClickHouseConfig getCfg()