org.lsst.ccs

Class Subsystem

java.lang.Object

org.lsst.ccs.Agent

org.lsst.ccs.Subsystem

All Implemented Interfaces:

CommandExecutor, ServiceLifecycle

public class Subsystem
extends Agent

The base class for a CCS subsystem.

This object will register itself on the three buses (control, status, log). It broadcasts its status, and can receive Commands.

Author:

Eric Aubourg, Bernard AMADE

Nested Class Summary

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

Agent.RunningCommand, Agent.ShutdownResult

Field Summary

Fields inherited from class org.lsst.ccs.Agent

AGENT_DESCRIPTION, AGENT_RUNTIMEINFO_TASK, commandExecutorLock, currentAction, currentQueries, currentSignals, jvmShutdown, logBusHandler, stateService, treeComponentInitialized

Constructor Summary

Constructors

Constructor and Description
Subsystem(String name, AgentInfo.AgentType type) Constructs a Subsystem of a given type with no inner structure.

Method Summary

Modifier and Type	Method and Description
Handler	getLogHandler(String handlerName) Get a LogHandler for a given name.
Level	getLogHandlerLevel(String handlerName) Command to get the level for a given handler.
Level	getLogLevel(String keyLogger) Command to get the Level of a named Logger.
int	getNumberCommandThreads() Command that returns the number of currently running commands.
boolean	isLogLevelInherited(String keyLogger) Command to check if the Level of a named Logger is inherited.
void	ping() Command to broadcast a message of presence on the status bus.
String	printLoggersLevel()
String	printLogHandlersLevel()
String	printRunningCommands() Command returning a String describing which commands are running.
void	setLogFormat(String format) Command to set a format for the TextFormatter of LogBusHandler (see logging.properties doc).
void	setLogHandlerLevel(String handlerName, String level) Command to set a level for a given handler Internally we use java.util.logging.Level#parse(String) to parse the Level corresponding to the provided String.
void	setLogLevel(String keyLogger, String levelName) Command to set the Level of a named Logger.
void	setStackTraceDepth(int depth) Will modify the depth of stackTrace printing for ALL handlers (including the LogBusHandler)

Methods inherited from class org.lsst.ccs.Agent

createHelper, executeCommandRequest, getAgentInfo, getAgentPersistenceService, getAgentService, getAgentServices, getCommandCount, getComponentConfigurationEnvironment, getComponentConfigurationEnvironmentByName, getComponentLookup, getCurrentAction, getDescription, getEnvironmentLockService, getEnvironmentMessagingAccess, getLogger, getMessagingAccess, getName, getScheduler, helper, initAgent, initLogBusHandler, isInEngineeringMode, populateComponentLookup, preInit, preStart, printComponentNodeTree, publishSubsystemDataOnStatusBus, sendAck, sendNack, sendStatusMessage, setAgentName, shutdownAgent, shutdownAgent, startAgent, vetoTransitionToNormalMode

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.lsst.ccs.ServiceLifecycle

afterBuild, afterInit, afterStart, preBuild, preShutdown

Constructor Detail

Subsystem

public Subsystem(String name,
                 AgentInfo.AgentType type)

Constructs a Subsystem of a given type with no inner structure.

Parameters:

name - name of the subsystem : cannot be null

type - Agent type

Method Detail

setLogLevel

@Command(description="set the level of a Logger",
         type=QUERY,
         category=CORE,
         level=0)
public void setLogLevel(String keyLogger,
                                                                                                                                         String levelName)

Command to set the Level of a named Logger.

Parameters:

keyLogger - name of Logger

levelName - the name of a JUL Level or null or "null" to revert to inherited Level

getLogLevel

@Command(description="get the level of a Logger",
         type=QUERY,
         category=CORE,
         level=0)
public Level getLogLevel(String keyLogger)

Command to get the Level of a named Logger.

Parameters:

keyLogger - name of Logger

Returns:

the Logger level (either inherited or directly set)

isLogLevelInherited

@Command(description="check if the level of a Logger is inherited",
         type=QUERY,
         category=CORE,
         level=0)
public boolean isLogLevelInherited(String keyLogger)

Command to check if the Level of a named Logger is inherited.

Parameters:

keyLogger - name of Logger

Returns:

true if the Level is inherited, false if it's set directly on the Logger

printLoggersLevel

@Command(description="check if the level of a Logger is inherited",
         type=QUERY,
         category=CORE,
         level=0)
public String printLoggersLevel()

setStackTraceDepth

@Command(description="sets the the depth of stacktraces in Logger messages",
         type=QUERY,
         category=CORE,
         level=1)
public void setStackTraceDepth(int depth)

Will modify the depth of stackTrace printing for ALL handlers (including the LogBusHandler)

Parameters:

depth - could be negative if we want all the stackTrace

setLogFormat

@Command(description="sets the format used by TextFormatter for LogEvent messages ",
         type=QUERY,
         category=CORE,
         level=1)
public void setLogFormat(String format)

Command to set a format for the TextFormatter of LogBusHandler (see logging.properties doc).

Parameters:

format -

setLogHandlerLevel

@Command(description="sets the handler (ConsoleHandler, FileHandler, LogBusHandler) log level",
         type=QUERY,
         category=CORE,
         level=0)
public void setLogHandlerLevel(String handlerName,
                                                                                                                                                                                              String level)

Command to set a level for a given handler Internally we use java.util.logging.Level#parse(String) to parse the Level corresponding to the provided String.

Parameters:

handlerName - The name of the LogHandler. Valid names are: LogBusHandler, LogBus, ConsoleHandler, Console, FileHandler, File

level - A String corresponding to a java.util.logging.Level

getLogHandlerLevel

@Command(description="sets the handler (ConsoleHandler, FileHandler, LogBusHandler) log level",
         type=QUERY,
         category=CORE,
         level=0)
public Level getLogHandlerLevel(String handlerName)

Command to get the level for a given handler.

Parameters:

handlerName - The name of the LogHandler. Valid names are: LogBusHandler, LogBus, ConsoleHandler, Console, FileHandler, File

Returns:

The Level of the specified Handler

printLogHandlersLevel

@Command(description="print the levels for all the log handlers",
         type=QUERY,
         category=CORE,
         level=0)
public String printLogHandlersLevel()

getLogHandler

public Handler getLogHandler(String handlerName)

Get a LogHandler for a given name.

Parameters:

handlerName - The name of the LogHandler. Valid names are: LogBusHandler, LogBus, ConsoleHandler, Console, FileHandler, File

Returns:

The corresponding Handler or null if nothing was found.

getNumberCommandThreads

@Command(description="gets the number of commands which are currently running (except the current one!)",
         type=QUERY,
         category=SYSTEM)
public int getNumberCommandThreads()

Command that returns the number of currently running commands.

Returns:

the number of commands currently executing (except the current one)

printRunningCommands

@Command(description="gets the name of commands which are currently running",
         type=QUERY,
         category=CORE)
public String printRunningCommands()

Command returning a String describing which commands are running.

Returns:

summary of currently running commands.

ping

@Command(description="broadcast on the status bus a message of presence",
         type=QUERY,
         category=SYSTEM)
public void ping()

Command to broadcast a message of presence on the status bus.