Package com.linkedin.venice.router.api

Class MetaStoreShadowReader

java.lang.Object

com.linkedin.venice.router.api.MetaStoreShadowReader

public class MetaStoreShadowReader
extends Object

This class serves as the shadow read handler of the meta system store.

Constructor Summary

Constructors

Constructor	Description
MetaStoreShadowReader(ReadOnlySchemaRepository readOnlySchemaRepository)

Method Summary

Modifier and Type	Method	Description
io.netty.handler.codec.http.FullHttpResponse	shadowReadMetaStore(VenicePath path, io.netty.handler.codec.http.FullHttpResponse originalResponse)	This method performs shadow read for meta system store request in Router.
boolean	shouldPerformShadowRead(VenicePath path, io.netty.handler.codec.http.FullHttpResponse response)

Methods inherited from class java.lang.Object

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

Constructor Details

MetaStoreShadowReader

public MetaStoreShadowReader(ReadOnlySchemaRepository readOnlySchemaRepository)

Method Details

shouldPerformShadowRead

public boolean shouldPerformShadowRead(VenicePath path,
 io.netty.handler.codec.http.FullHttpResponse response)

Returns:

True only if a meta store query request is indicated not found in the provided response returned from the storage replica.

shadowReadMetaStore

public io.netty.handler.codec.http.FullHttpResponse shadowReadMetaStore(VenicePath path,
 io.netty.handler.codec.http.FullHttpResponse originalResponse)

This method performs shadow read for meta system store request in Router.

Parameters:

path - Request path for Meta Store metadata.

originalResponse - Original response retrieved from storage replica.

Returns:

Updated FullHttpResponse with filled in content from metadata repository.