Package org.apache.shardingsphere.dbdiscovery.spi

Interface DatabaseDiscoveryProvider

All Superinterfaces:

org.apache.shardingsphere.infra.util.spi.type.typed.TypedSPI

public interface DatabaseDiscoveryProvider
extends org.apache.shardingsphere.infra.util.spi.type.typed.TypedSPI

Database discovery provider.

Method Summary

Modifier and Type	Method	Description
void	checkEnvironment(String databaseName, Collection<DataSource> dataSources)	Check environment.
Optional<Integer>	getMinEnabledReplicas()	Get min enabled replicas.
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.util.spi.type.typed.TypedSPI

getType, getTypeAliases, init, isDefault

Method Details

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

getMinEnabledReplicas

Optional<Integer> getMinEnabledReplicas()

Get min enabled replicas.

Returns:

min enabled replicas