@ExportPackage @PublicApi

Package com.yahoo.messagebus

This package contains the main API of the message bus. The typical user will instantiate RPCMessageBus.

Interface Summary

Interface	Description
ConfigHandler	This class declares those methods required to be a handler for an instance of the ConfigAgent class.
MessageBus.SendBlockedMessages
MessagebusConfig.Producer
MessageHandler	All classes that wants to handle messages that move through the messagebus need to implement this interface.
Messenger.Task	Defines the required interface for tasks to be posted to this worker.
Protocol	Interface implemented by the concrete application message protocol.
ReplyHandler	All classes that wants to handle replies that move through the messagebus need to implement this interface.
ThrottlePolicy	An implementation of this interface is used by SourceSession to throttle output.

Class Summary

Class	Description
AllPassThrottlePolicy	This is an implementation of the ThrottlePolicy that passes all requests (no real throttling).
CallStack	An wrapper around a stack of frame objects that is aware of the message that owns it.
ConfigAgent	This class implements subscription to message bus config.
DestinationSession	A session supporting receiving and replying to messages.
DestinationSessionParams	To facilitate several configuration parameters to the MessageBus.createDestinationSession(DestinationSessionParams), all parameters are held by this class.
DynamicThrottlePolicy	This is an implementation of the ThrottlePolicy that offers dynamic limits to the number of pending messages a SourceSession is allowed to have.
EmptyReply	The empty reply is the only concrete implementation of a message that is offered by the MessageBus.
Error	This class implements the pair (code, message) that is used in Reply to hold errors.
ErrorCode	This interface contains the reserved error codes that are used for errors that occur within the messagebus.
IntermediateSession	A session which supports receiving, forwarding and acknowledgement of messages.
IntermediateSessionParams	To facilitate several configuration parameters to the MessageBus.createIntermediateSession(IntermediateSessionParams), all parameters are held by this class.
Message	A message is a child of Routable, it is not a reply, and it has a sequencing identifier.
MessageBus	A message bus contains the factory for creating sessions to send, receive and forward messages.
MessagebusConfig	This class represents the root node of messagebus Copyright 2017 Yahoo Holdings.
MessagebusConfig.Builder
MessagebusConfig.Routingtable	This class represents messagebus.routingtable[]
MessagebusConfig.Routingtable.Builder
MessagebusConfig.Routingtable.Hop	This class represents messagebus.routingtable[].hop[]
MessagebusConfig.Routingtable.Hop.Builder
MessagebusConfig.Routingtable.Route	This class represents messagebus.routingtable[].route[]
MessagebusConfig.Routingtable.Route.Builder
MessageBusParams	To facilitate several configuration parameters to the MessageBus constructor, all parameters are held by this class.
Messenger	This class implements a single thread that is able to process arbitrary tasks.
NetworkMessageBus	The combination of a messagebus and a network over which it may send data.
ProtocolRepository	Implements a thread-safe repository for protocols and their routing policies.
RateThrottlingPolicy	Throttling policy that throttles sending based on a desired rate.
Reply	A reply is a response to a message that has been sent throught the messagebus.
Result	Information on the outcome of initiating a send or forward on a session.
Routable	Superclass for objects that can be either explicitly (Message) or implicitly (Reply) routed.
RPCMessageBus	The RPCMessageBus class wraps a MessageBus with an RPCNetwork and handles reconfiguration.
SendProxy	This class owns a message that is being sent by message bus.
Sequencer	Sequencing is implemented as a message handler that is configured in a source session in that session's chain of linked message handlers.
SourceSession	A session supporting sending new messages.
SourceSessionParams	To facilitate several configuration parameters to the MessageBus.createSourceSession(ReplyHandler, SourceSessionParams), all parameters are held by this class.
StaticThrottlePolicy	This is an implementation of the ThrottlePolicy that offers static limits to the amount of pending data a SourceSession is allowed to have.
Trace	A Trace object contains ad-hoc string notes organized in a strict-loose tree.
TraceLevel	This class defines the Trace levels used by message bus.
TraceNode	This class contains the actual trace information of a Trace object.