org.lsst.ccs.bus.locking

Class LockArbitrator

java.lang.Object

org.lsst.ccs.Subsystem

org.lsst.ccs.BusMaster

org.lsst.ccs.bus.locking.LockArbitrator

All Implemented Interfaces:

CommandExecutor, CommandListener, StatusListener, StatusListens

public class LockArbitrator
extends BusMaster

A subsystem that manages locks. Should be a singleton in the whole system, can be colocated with the master controller or the main server.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LockArbitrator.LockOwnerInfo

Nested classes/interfaces inherited from class org.lsst.ccs.Subsystem

Subsystem.DictionarySearchResult, Subsystem.SignalThread, Subsystem.State, Subsystem.StatusBroadcaster

Field Summary

Fields inherited from class org.lsst.ccs.Subsystem

actionMonitor, ancillaryGroup, closing, commandBuilder, commandBusSelector, commandGroup, commandMonitor, configurationProxy, currentSubsystem, fac, forceShutdown, initializing, initThread, innerState, inTestContext, LOCAL_EXECUTION_INFO, log, logBusHandler, signalsMonitor, startInEngineeringMode, statusBroadcasterLock, statusBroadcasterThread, statusBusSelector, waitingForCommandTermination

Constructor Summary

Constructors

Constructor and Description
LockArbitrator()

Method Summary

Modifier and Type	Method and Description
void	handleLockRequest(String targetSystem, String token, boolean isAcquire, String origin)
static void	main(String[] args)
boolean	registerBusMaster(String busMasterName, String key)

Methods inherited from class org.lsst.ccs.BusMaster

doStart, isMaster, lockSubsystem, unlockSubsystem

Methods inherited from class org.lsst.ccs.Subsystem

abort, abort, addLock, broadcastAlarm, broadcastAlarm, broadcastAlarmClear, broadcastStatus, broadcastStatus, checkAllHardwareStarted, checkAllHardwareStopped, checkHardware, clearAlarms, completeInitialization, createState, doShutdown, executeCommandSingleThread, fillStatus, forceShutdown, getAgentPresenceManager, getAncillaryGroup, getCCSVersions, getCommandBuilder, getCommandBusSelector, getConfiguration, getConfigurationProxy, getCurrentActionThread, getCurrentSubsystemName, getDefaultSelector, getEthHardAddress, getInnerState, getLogger, getMessagingAccess, getName, getNumberCommandThreads, getSoftwareRevision, getStateForPublication, getStatus, getStatusBroadcastPeriod, getStatusBusSelector, getSystemDictionary, getTag, initialisationEndPhase, initLogBusHandler, interruptActionThread, interruptAllRunningCommands, interruptAllSignalThreads, interruptAncillaryThreads, interruptInitThread, isInEngineeringMode, isInTestContext, isListenToStatus, isMultithreaded, isSlave, isStartedInEngineeringMode, lockUpdate, onAck, onCommand, onReply, onStatus, ping, postStart, printRunningCommands, publishData, publishData, publishData, publishData, publishData, publishData, publishData, publishMetaData, publishReply, publishStateChange, publishStatus, publishStatus, publishStatus, publishStatus, publishStatus, publishStatus, publishStatusData, publishTrendingStatus, raiseAlarm, rawCommandExecution, registerAsBusMaster, removeLock, removeLogPanicState, searchForDictionary, searchForDictionary, sendRawStatus, setBusLogHandlerLevel, setCommandBusSelector, setConfigurationProxy, setListenToStatus, setLogFormat, setLogHandlerLevel, setLogLevel, setMultithreaded, setName, setStackTraceDepth, setStatusBroadcastPeriod, setStatusBusSelector, shutdown, start, startStatusBroadcasting, stayAlive, stop, stopStatusBroadcasting, switchToEngineeringMode, switchToErrorState, switchToNormalMode, switchToShutdownState, tryReadyState, updateCurrentSubsystem, updateState, updateState, waitForCommandExecution, waitForReadyState, warning

Methods inherited from class java.lang.Object

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

Constructor Detail

LockArbitrator

public LockArbitrator()

Method Detail

main

public static void main(String[] args)

handleLockRequest

public void handleLockRequest(String targetSystem,
                              String token,
                              boolean isAcquire,
                              String origin)

registerBusMaster

public boolean registerBusMaster(String busMasterName,
                                 String key)