Package com.netflix.zuul.netty.server.push

Class PushMessageSender

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.SimpleChannelInboundHandler<io.netty.handler.codec.http.FullHttpRequest>

com.netflix.zuul.netty.server.push.PushMessageSender

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler

@Sharable
public abstract class PushMessageSender
extends io.netty.channel.SimpleChannelInboundHandler<io.netty.handler.codec.http.FullHttpRequest>

Serves "/push" URL that is used by the backend to POST push messages to a given Zuul instance. This URL handler MUST BE accessible ONLY from RFC 1918 private internal network space (10.0.0.0 or 172.16.0.0) to guarantee that external applications/agents cannot push messages to your client. In AWS this can typically be achieved using correctly configured security groups. Author: Susheel Aroskar Date: 5/14/18

Nested Class Summary

Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field	Description
static final String	SECURE_TOKEN_HEADER_NAME

Constructor Summary

Constructors

Constructor	Description
PushMessageSender(PushConnectionRegistry pushConnectionRegistry)

Method Summary

Modifier and Type	Method	Description
protected void	channelRead0(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.FullHttpRequest request)
protected abstract PushUserAuth	getPushUserAuth(io.netty.handler.codec.http.FullHttpRequest request)
protected void	logClientNotConnected()
protected void	logNoIdentity()
protected void	logPushAttempt()
protected void	logPushError(Throwable t)
protected void	logPushEvent(io.netty.handler.codec.http.FullHttpRequest request, io.netty.handler.codec.http.HttpResponseStatus status, PushUserAuth userAuth)
protected void	logPushSuccess()
protected void	logRateLimited()
protected void	logSecurityTokenVerificationFail()
protected boolean	verifySecureToken(io.netty.handler.codec.http.FullHttpRequest request, PushConnection conn)

Methods inherited from class io.netty.channel.SimpleChannelInboundHandler

acceptInboundMessage, channelRead

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelInactive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, handlerRemoved, isSharable

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.netty.channel.ChannelHandler

handlerAdded, handlerRemoved

Field Details

SECURE_TOKEN_HEADER_NAME

public static final String SECURE_TOKEN_HEADER_NAME

See Also:

• Constant Field Values

Constructor Details

PushMessageSender

@Inject
public PushMessageSender(PushConnectionRegistry pushConnectionRegistry)

Method Details

verifySecureToken

protected boolean verifySecureToken(io.netty.handler.codec.http.FullHttpRequest request,
 PushConnection conn)

channelRead0

protected void channelRead0(io.netty.channel.ChannelHandlerContext ctx,
 io.netty.handler.codec.http.FullHttpRequest request)
                     throws Exception

Specified by:

channelRead0 in class io.netty.channel.SimpleChannelInboundHandler<io.netty.handler.codec.http.FullHttpRequest>

Throws:

Exception

logPushAttempt

protected void logPushAttempt()

logNoIdentity

protected void logNoIdentity()

logClientNotConnected

protected void logClientNotConnected()

logPushSuccess

protected void logPushSuccess()

logPushError

protected void logPushError(Throwable t)

logRateLimited

protected void logRateLimited()

logSecurityTokenVerificationFail

protected void logSecurityTokenVerificationFail()

logPushEvent

protected void logPushEvent(io.netty.handler.codec.http.FullHttpRequest request,
 io.netty.handler.codec.http.HttpResponseStatus status,
 PushUserAuth userAuth)

getPushUserAuth

protected abstract PushUserAuth getPushUserAuth(io.netty.handler.codec.http.FullHttpRequest request)