org.apache.knox.gateway.hdfs.dispatch

Class HdfsHttpClientDispatch

java.lang.Object

org.apache.knox.gateway.dispatch.AbstractGatewayDispatch

org.apache.knox.gateway.dispatch.DefaultDispatch

org.apache.knox.gateway.hdfs.dispatch.HdfsHttpClientDispatch

All Implemented Interfaces:

Dispatch

Direct Known Subclasses:

AbstractHdfsHaDispatch

public class HdfsHttpClientDispatch
extends DefaultDispatch

Field Summary

Fields inherited from class org.apache.knox.gateway.dispatch.DefaultDispatch

auditor, LOG, RES, SET_COOKIE, WWW_AUTHENTICATE

Fields inherited from class org.apache.knox.gateway.dispatch.AbstractGatewayDispatch

client

Constructor Summary

Constructors

Constructor and Description
HdfsHttpClientDispatch()

Method Summary

Modifier and Type	Method and Description
protected org.apache.http.HttpEntity	createRequestEntity(javax.servlet.http.HttpServletRequest request) This method ensures that the request InputStream is not acquired prior to a dispatch to a component such as a namenode that doesn't the request body.

Methods inherited from class org.apache.knox.gateway.dispatch.DefaultDispatch

addCredentialsToRequest, closeInboundResponse, destroy, doDelete, doGet, doHead, doOptions, doPost, doPut, executeOutboundRequest, executeRequest, getOutboundResponseExcludeHeaders, getReplayBufferSize, getReplayBufferSizeInBytes, init, setReplayBufferSize, setReplayBufferSizeInBytes, writeOutboundResponse

Methods inherited from class org.apache.knox.gateway.dispatch.AbstractGatewayDispatch

copyRequestHeaderFields, encodeUnwiseCharacters, getDispatchUrl, getHttpClient, getOutboundRequestExcludeHeaders, setHttpClient, writeResponse

Methods inherited from class java.lang.Object

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

Constructor Detail

HdfsHttpClientDispatch

public HdfsHttpClientDispatch()
                       throws javax.servlet.ServletException

Throws:

javax.servlet.ServletException

Method Detail

createRequestEntity

protected org.apache.http.HttpEntity createRequestEntity(javax.servlet.http.HttpServletRequest request)
                                                  throws IOException

This method ensures that the request InputStream is not acquired prior to a dispatch to a component such as a namenode that doesn't the request body. The side effect of this is that the client does not get a 100 continue from Knox which will trigger the client to send the entire payload before redirect to the target component like a datanode and have to send it again.

Overrides:

createRequestEntity in class DefaultDispatch

Throws:

IOException