Java Doc for MonitoredHost.java in  » 6.0-JDK-Modules-sun » jvmstat » sun » jvmstat » monitor » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules sun » jvmstat » sun.jvmstat.monitor   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    sun.jvmstat.monitor.MonitoredHost All known Subclasses:   sun.jvmstat.perfdata.monitor.protocol.rmi.MonitoredHostProvider,  sun.jvmstat.perfdata.monitor.protocol.local.MonitoredHostProvider,  sun.jvmstat.perfdata.monitor.protocol.file.MonitoredHostProvider, MonitoredHost abstract public class MonitoredHost (Code) An abstraction for a host that contains instrumented Java Virtual Machines. The class provides abstract factory methods for creating concrete instances of this class and factory methods for creating MonitoredVm instances. Concrete implementations of this class provide methods for managing the communications protocols and provide for event notification. author:    Brian Doherty version:    1.10, 05/09/07 since:    1.5 See Also:   HostIdentifier See Also:   VmIdentifier See Also:   MonitoredVm See Also:   HostListener Field Summary protected  HostIdentifier hostId      The HostIdentifier for this MonitoredHost instance. protected  int interval      The polling interval, in milliseconds, for this MonitoredHost instance. protected  Exception lastException      The last Exception encountered while polling this MonitoredHost. Method Summary abstract public  Set<Integer> activeVms()      Return the current set of active Java Virtual Machines for this MonitoredHost. abstract public  void addHostListener(HostListener listener)      Add a HostListener. public  void clearLastException()      Clear the last exception. abstract public  void detach(MonitoredVm vm)      Detach from the indicated MonitoredVm. public  HostIdentifier getHostIdentifier()      Return the resolved HostIdentifier for this MonitoredHost. public  int getInterval()      Get the polling interval. public  Exception getLastException()      Get the last exception encountered while polling this MonitoredHost. public static  MonitoredHost getMonitoredHost(String hostIdString)      Factory method to construct MonitoredHost instances to manage connections to the host indicated by hostIdString Parameters:   hostIdString - a String representation of a HostIdentifier MonitoredHost - the MonitoredHost instance for communicatingwith the indicated host using the protocolspecified in hostIdString. throws:   MonitorException - Thrown if monitoring errors occur. throws:   URISyntaxException - Thrown when the hostIdString is poorlyformed. public static  MonitoredHost getMonitoredHost(VmIdentifier vmid)      Factory method to construct a MonitoredHost instance to manage the connection to the Java Virtual Machine indicated by vmid. This method provide a convenient short cut for attaching to a specific instrumented Java Virtual Machine. public static  MonitoredHost getMonitoredHost(HostIdentifier hostId)      Factory method to construct a MonitoredHost instance to manage the connection to the host indicated by hostId. Parameters:   hostId - the identifier for the target host. abstract public  MonitoredVm getMonitoredVm(VmIdentifier id)      Get the MonitoredVm for the given Java Virtual Machine. abstract public  MonitoredVm getMonitoredVm(VmIdentifier id, int interval)      Get the MonitoredVm for the given Java Virtual Machine. public  boolean isErrored()      Test if this MonitoredHost is in the errored state. abstract public  void removeHostListener(HostListener listener)      Remove a HostListener. protected static  HostIdentifier resolveHostId(HostIdentifier hostId)      Method to resolve unspecified components of the given HostIdentifier by constructing a new HostIdentifier that replaces the unspecified components with the default values. Parameters:   hostId - the unresolved HostIdentifier. public  void setInterval(int interval)      Set the polling interval for this MonitoredHost. public  void setLastException(Exception lastException)      Set the last exception encountered while polling this MonitoredHost. Field Detail hostId protected HostIdentifier hostId(Code) The HostIdentifier for this MonitoredHost instance. interval protected int interval(Code) The polling interval, in milliseconds, for this MonitoredHost instance. lastException protected Exception lastException(Code) The last Exception encountered while polling this MonitoredHost. Method Detail activeVms abstract public Set<Integer> activeVms() throws MonitorException(Code) Return the current set of active Java Virtual Machines for this MonitoredHost. The returned Set contains Integer instances holding the local virtual machine identifier, or lvmid for each instrumented Java Virtual Machine currently available. Set - the current set of active Java Virtual Machines associatedwith this MonitoredHost, or the empty set of none. throws:   MonitorException - Thrown if monitoring errors occur. addHostListener abstract public void addHostListener(HostListener listener) throws MonitorException(Code) Add a HostListener. The given listener is added to the list of HostListener objects to be notified of MonitoredHost related events. Parameters:   listener - the HostListener to add. throws:   MonitorException - Thrown if monitoring errors occur. clearLastException public void clearLastException()(Code) Clear the last exception. detach abstract public void detach(MonitoredVm vm) throws MonitorException(Code) Detach from the indicated MonitoredVm. Parameters:   vm - the monitored Java Virtual Machine. throws:   MonitorException - Thrown if monitoring errors occur. getHostIdentifier public HostIdentifier getHostIdentifier()(Code) Return the resolved HostIdentifier for this MonitoredHost. HostIdentifier - the resolved HostIdentifier. getInterval public int getInterval()(Code) Get the polling interval. int - the polling interval in milliseconds for this MonitoredHost getLastException public Exception getLastException()(Code) Get the last exception encountered while polling this MonitoredHost. Exception - the last exception occurred while polling thisMonitoredHost, or null if no exceptionhas occurred or the exception has been cleared, getMonitoredHost public static MonitoredHost getMonitoredHost(String hostIdString) throws MonitorException, URISyntaxException(Code) Factory method to construct MonitoredHost instances to manage connections to the host indicated by hostIdString Parameters:   hostIdString - a String representation of a HostIdentifier MonitoredHost - the MonitoredHost instance for communicatingwith the indicated host using the protocolspecified in hostIdString. throws:   MonitorException - Thrown if monitoring errors occur. throws:   URISyntaxException - Thrown when the hostIdString is poorlyformed. This exception may get encapsulatedinto MonitorException in a future revision. getMonitoredHost public static MonitoredHost getMonitoredHost(VmIdentifier vmid) throws MonitorException(Code) Factory method to construct a MonitoredHost instance to manage the connection to the Java Virtual Machine indicated by vmid. This method provide a convenient short cut for attaching to a specific instrumented Java Virtual Machine. The information in the VmIdentifier is used to construct a corresponding HostIdentifier, which in turn is used to create the MonitoredHost instance. Parameters:   vmid - The identifier for the target Java Virtual Machine. MonitoredHost - The MonitoredHost object needed to attach tothe target Java Virtual Machine. throws:   MonitorException - Thrown if monitoring errors occur. getMonitoredHost public static MonitoredHost getMonitoredHost(HostIdentifier hostId) throws MonitorException(Code) Factory method to construct a MonitoredHost instance to manage the connection to the host indicated by hostId. Parameters:   hostId - the identifier for the target host. MonitoredHost - The MonitoredHost object needed to attach tothe target host. throws:   MonitorException - Thrown if monitoring errors occur. getMonitoredVm abstract public MonitoredVm getMonitoredVm(VmIdentifier id) throws MonitorException(Code) Get the MonitoredVm for the given Java Virtual Machine. The default sampling interval is used for the MonitoredVm instance. Parameters:   id - the VmIdentifier specifying the target Java Virtual Machine. MonitoredVm - the MonitoredVm instance for the target JavaVirtual Machine. throws:   MonitorException - Thrown if monitoring errors occur. getMonitoredVm abstract public MonitoredVm getMonitoredVm(VmIdentifier id, int interval) throws MonitorException(Code) Get the MonitoredVm for the given Java Virtual Machine. The sampling interval is set to the given interval. Parameters:   id - the VmIdentifier specifying the target Java Virtual Machine. Parameters:   interval - the sampling interval for the target Java Virtual Machine. MonitoredVm - the MonitoredVm instance for the target JavaVirtual Machine. throws:   MonitorException - Thrown if monitoring errors occur. isErrored public boolean isErrored()(Code) Test if this MonitoredHost is in the errored state. If this method returns true, then the Exception returned by getLastException() indicates the Exception that caused the error condition. boolean - true if the MonitoredHost instance has experiencedan error, or false if it hasn't or if any pasterror has been cleared. removeHostListener abstract public void removeHostListener(HostListener listener) throws MonitorException(Code) Remove a HostListener. The given listener is removed from the list of HostListener objects to be notified of MonitoredHost related events. Parameters:   listener - the HostListener to add. throws:   MonitorException - Thrown if monitoring errors occur. resolveHostId protected static HostIdentifier resolveHostId(HostIdentifier hostId) throws MonitorException(Code) Method to resolve unspecified components of the given HostIdentifier by constructing a new HostIdentifier that replaces the unspecified components with the default values. Parameters:   hostId - the unresolved HostIdentifier. HostIdentifier - a resolved HostIdentifier. throws:   MonitorException - Thrown if monitoring errors occur. setInterval public void setInterval(int interval)(Code) Set the polling interval for this MonitoredHost. Parameters:   interval - the polling interval, in milliseconds setLastException public void setLastException(Exception lastException)(Code) Set the last exception encountered while polling this MonitoredHost. Parameters:   lastException - the last exception encountered; Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)