Package org.yamcs.tctm

Class AbstractTcDataLink

java.lang.Object

com.google.common.util.concurrent.AbstractService

org.yamcs.tctm.AbstractLink

org.yamcs.tctm.AbstractTcDataLink

All Implemented Interfaces:

com.google.common.util.concurrent.Service, SystemParametersProducer, Link, LinkActionProvider, TcDataLink

Direct Known Subclasses:

AbstractIntegrationTest.TcDataLink, AbstractThreadedTcDataLink, Cop1TcPacketHandler, TcPacketHandler, YamcsTcLink

public abstract class AbstractTcDataLink
extends AbstractLink
implements TcDataLink

Base implementation for a TC data link that initialises a post processor and implements basic methods.

Nested Class Summary

Nested classes/interfaces inherited from interface org.yamcs.tctm.Link

Link.Status

Nested classes/interfaces inherited from interface com.google.common.util.concurrent.Service

com.google.common.util.concurrent.Service.Listener, com.google.common.util.concurrent.Service.State

Field Summary

Fields

Modifier and Type	Field	Description
protected CommandPostprocessor	cmdPostProcessor
protected CommandHistoryPublisher	commandHistoryPublisher
protected long	housekeepingInterval

Fields inherited from class org.yamcs.tctm.AbstractLink

config, dataInCount, dataOutCount, disabled, eventProducer, LINK_NAMESPACE, linkName, log, timeService, yamcsInstance

Constructor Summary

Constructors

Constructor	Description
AbstractTcDataLink()

Method Summary

Modifier and Type	Method	Description
protected void	ackCommand(Commanding.CommandId commandId)	send an ack in the command history that the command has been sent out of the link
protected void	failedCommand(Commanding.CommandId commandId, String reason)	Send to command history the failed command
long	getDataInCount()
Spec	getDefaultSpec()	Returns a default link Spec.
void	init(String yamcsInstance, String linkName, YConfiguration config)	Called at startup to initialize the link.
protected void	initPostprocessor(String instance, YConfiguration config)
protected byte[]	postprocess(PreparedCommand pc)	Postprocesses the command, unless postprocessing is disabled.
void	setCommandHistoryPublisher(CommandHistoryPublisher commandHistoryListener)

Methods inherited from class org.yamcs.tctm.AbstractLink

addAction, collectSystemParameters, connectionStatus, dataIn, dataOut, disable, doDisable, doEnable, enable, getAction, getActions, getConfig, getCurrentTime, getDataOutCount, getDetailedStatus, getEventLoop, getLinkStatus, getName, getParent, getSystemParameters, getYamcsInstance, isDisabled, isRunningAndEnabled, resetCounters, setParent, setupSystemParameters

Methods inherited from class com.google.common.util.concurrent.AbstractService

addListener, awaitRunning, awaitRunning, awaitRunning, awaitTerminated, awaitTerminated, awaitTerminated, doCancelStart, doStart, doStop, failureCause, isRunning, notifyFailed, notifyStarted, notifyStopped, startAsync, state, stopAsync, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.yamcs.tctm.Link

disable, enable, getConfig, getDataOutCount, getDetailedStatus, getExtraInfo, getLinkStatus, getName, getParent, getSpec, isDisabled, isEffectivelyDisabled, resetCounters, setParent, setupSystemParameters

Methods inherited from interface org.yamcs.parameter.SystemParametersProducer

getFrequency

Methods inherited from interface org.yamcs.tctm.TcDataLink

isCommandingAvailable, isTcDataLinkImplemented, sendCommand

Field Details

commandHistoryPublisher

protected CommandHistoryPublisher commandHistoryPublisher

cmdPostProcessor

protected CommandPostprocessor cmdPostProcessor

housekeepingInterval

protected long housekeepingInterval

Constructor Details

AbstractTcDataLink

public AbstractTcDataLink()

Method Details

getDefaultSpec

public Spec getDefaultSpec()

Description copied from interface: Link

Returns a default link Spec. This can be used in an implementation of {Link.getSpec(). Eventually (after a few years), it is expected to migrate this logic directly into {LinkLink.getSpec(), rather than returning null from there. But we want to give sufficient time for links everywhere to start defining their arguments.

Specified by:

getDefaultSpec in interface Link

init

public void init(String yamcsInstance,
 String linkName,
 YConfiguration config)
          throws ConfigurationException

Description copied from interface: Link

Called at startup to initialize the link.

The config corresponds to the map that is under the link definition in yamcs.instance.yaml.

Specified by:

init in interface Link

Overrides:

init in class AbstractLink

config - - the configuration - cannot be null (but can be empty)

Throws:

ConfigurationException

initPostprocessor

protected void initPostprocessor(String instance,
 YConfiguration config)

setCommandHistoryPublisher

public void setCommandHistoryPublisher(CommandHistoryPublisher commandHistoryListener)

Specified by:

setCommandHistoryPublisher in interface TcDataLink

postprocess

protected byte[] postprocess(PreparedCommand pc)

Postprocesses the command, unless postprocessing is disabled.

Returns:

potentially modified binary, or null to indicate that the command should not be handled further.

getDataInCount

public long getDataInCount()

Specified by:

getDataInCount in interface Link

Overrides:

getDataInCount in class AbstractLink

failedCommand

protected void failedCommand(Commanding.CommandId commandId,
 String reason)

Send to command history the failed command

ackCommand

protected void ackCommand(Commanding.CommandId commandId)

send an ack in the command history that the command has been sent out of the link

Parameters:

commandId -