com.alibaba.csp.sentinel.datasource

Class EmptyDataSource

java.lang.Object

com.alibaba.csp.sentinel.datasource.EmptyDataSource

All Implemented Interfaces:

DataSource<Object,Object>

public class EmptyDataSource
extends Object
implements DataSource<Object,Object>

A DataSource based on nothing. getProperty() will always return the same cached SentinelProperty that doing nothing.
This class is used when we want to use default settings instead of configs from the DataSource

Author:

leyou

Field Summary

Fields

Modifier and Type	Field and Description
static DataSource<Object,Object>	EMPTY_DATASOURCE

Method Summary

Modifier and Type	Method and Description
void	close() Close the data source.
SentinelProperty<Object>	getProperty() Get SentinelProperty of the data source.
Object	loadConfig() Load data data source as the target type.
Object	readSource() Read original data from the data source.
void	writeDataSource(Object config) Write the values to the data source.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_DATASOURCE

public static final DataSource<Object,Object> EMPTY_DATASOURCE

Method Detail

loadConfig

public Object loadConfig()
                  throws Exception

Description copied from interface: DataSource

Load data data source as the target type.

Specified by:

loadConfig in interface DataSource<Object,Object>

Returns:

the target data.

Throws:

Exception

readSource

public Object readSource()
                  throws Exception

Description copied from interface: DataSource

Read original data from the data source.

Specified by:

readSource in interface DataSource<Object,Object>

Returns:

the original data.

Throws:

Exception

getProperty

public SentinelProperty<Object> getProperty()

Description copied from interface: DataSource

Get SentinelProperty of the data source.

Specified by:

getProperty in interface DataSource<Object,Object>

Returns:

the property.

close

public void close()
           throws Exception

Description copied from interface: DataSource

Close the data source.

Specified by:

close in interface DataSource<Object,Object>

Throws:

Exception

writeDataSource

public void writeDataSource(Object config)
                     throws Exception

Description copied from interface: DataSource

Write the values to the data source.

Specified by:

writeDataSource in interface DataSource<Object,Object>

Throws:

Exception