com.alibaba.csp.sentinel.datasource

Class EmptyDataSource

java.lang.Object

com.alibaba.csp.sentinel.datasource.EmptyDataSource

All Implemented Interfaces:

ReadableDataSource<Object,Object>

public final class EmptyDataSource
extends Object
implements ReadableDataSource<Object,Object>

A ReadableDataSource 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 ReadableDataSource.

Author:

leyou

Field Summary

Fields

Modifier and Type	Field and Description
static ReadableDataSource<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.

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 ReadableDataSource<Object,Object> EMPTY_DATASOURCE

Method Detail

loadConfig

public Object loadConfig()
                  throws Exception

Description copied from interface: ReadableDataSource

Load data data source as the target type.

Specified by:

loadConfig in interface ReadableDataSource<Object,Object>

Returns:

the target data.

Throws:

Exception - IO or other error occurs

readSource

public Object readSource()
                  throws Exception

Description copied from interface: ReadableDataSource

Read original data from the data source.

Specified by:

readSource in interface ReadableDataSource<Object,Object>

Returns:

the original data.

Throws:

Exception - IO or other error occurs

getProperty

public SentinelProperty<Object> getProperty()

Description copied from interface: ReadableDataSource

Get SentinelProperty of the data source.

Specified by:

getProperty in interface ReadableDataSource<Object,Object>

Returns:

the property.

close

public void close()
           throws Exception

Description copied from interface: ReadableDataSource

Close the data source.

Specified by:

close in interface ReadableDataSource<Object,Object>

Throws:

Exception - IO or other error occurs