org.apache.shardingsphere.dbdiscovery.spi

Interface DatabaseDiscoveryProviderAlgorithm

All Superinterfaces:

ShardingSphereAlgorithm, org.apache.shardingsphere.infra.util.spi.lifecycle.SPIPostProcessor, org.apache.shardingsphere.infra.util.spi.type.typed.TypedSPI

public interface DatabaseDiscoveryProviderAlgorithm
extends ShardingSphereAlgorithm

Database discovery provider algorithm.

Method Summary

Modifier and Type	Method and Description
void	checkEnvironment(String databaseName, Collection<DataSource> dataSources) Check environment.
boolean	isPrimaryInstance(DataSource dataSource) Judge whether database instance is primary.
ReplicaDataSourceStatus	loadReplicaStatus(DataSource replicaDataSource) Load replica data source status.

Methods inherited from interface org.apache.shardingsphere.infra.algorithm.ShardingSphereAlgorithm

getProps

Methods inherited from interface org.apache.shardingsphere.infra.util.spi.type.typed.TypedSPI

getType, getTypeAliases

Methods inherited from interface org.apache.shardingsphere.infra.util.spi.lifecycle.SPIPostProcessor

init

Method Detail

checkEnvironment

void checkEnvironment(String databaseName,
                      Collection<DataSource> dataSources)

Check environment.

Parameters:

databaseName - database name

dataSources - data sources

isPrimaryInstance

boolean isPrimaryInstance(DataSource dataSource)
                   throws SQLException

Judge whether database instance is primary.

Parameters:

dataSource - data source to be judged

Returns:

is primary database instance or not

Throws:

SQLException - SQL exception

loadReplicaStatus

ReplicaDataSourceStatus loadReplicaStatus(DataSource replicaDataSource)
                                   throws SQLException

Load replica data source status.

Parameters:

replicaDataSource - to be loaded replica data source

Returns:

replica data source status

Throws:

SQLException - SQL exception