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package sun.jvmstat.perfdata.monitor.protocol.file;

import sun.jvmstat.monitor.*;
import sun.jvmstat.monitor.event.HostListener;
import sun.jvmstat.perfdata.monitor.*;
import java.util.*;
import java.net.*;

Concrete implementation of the MonitoredHost interface for the file: protocol of the HotSpot PerfData monitoring implementation.
Author:Brian Doherty
Since:1.5
/** * Concrete implementation of the MonitoredHost interface for the * <em>file:</em> protocol of the HotSpot PerfData monitoring implementation. * * @author Brian Doherty * @since 1.5 */
public class MonitoredHostProvider extends MonitoredHost {
The default polling interval. Not used by the file: protocol.
/** * The default polling interval. Not used by the <em>file:</em> protocol. */
public static final int DEFAULT_POLLING_INTERVAL = 0;
Create a MonitoredHostProvider instance using the given HostIdentifier.
Params:
  • hostId – the host identifier for this MonitoredHost
/** * Create a MonitoredHostProvider instance using the given HostIdentifier. * * @param hostId the host identifier for this MonitoredHost */
public MonitoredHostProvider(HostIdentifier hostId) { this.hostId = hostId; }
{@inheritDoc}
/** * {@inheritDoc} */
public MonitoredVm getMonitoredVm(VmIdentifier vmid) throws MonitorException { return getMonitoredVm(vmid, DEFAULT_POLLING_INTERVAL); }
{@inheritDoc}.

Note - the file: protocol silently ignores the interval parameter.

/** * {@inheritDoc}. * <p> * Note - the <em>file:</em> protocol silently ignores the * {@code interval} parameter. */
public MonitoredVm getMonitoredVm(VmIdentifier vmid, int interval) throws MonitorException { // don't attempt to resolve 'file:' based vmid return new FileMonitoredVm(vmid, interval); }
{@inheritDoc}
/** * {@inheritDoc} */
public void detach(MonitoredVm vm) { vm.detach(); }
{@inheritDoc}.

Note - the file: protocol currenly does not support registration or notification of event listeners. This method silently ignores the add request.

/** * {@inheritDoc}. * <p> * Note - the <em>file:</em> protocol currenly does not support * registration or notification of event listeners. This method * silently ignores the add request. */
public void addHostListener(HostListener listener) { // no HostListener support for 'file:' based VmIdentifiers }
{@inheritDoc}.

Note - the file: protocol currenly does not support registration or notification of event listeners. This method silently ignores the remove request.

/** * {@inheritDoc}. * <p> * Note - the <em>file:</em> protocol currenly does not support * registration or notification of event listeners. This method * silently ignores the remove request. */
public void removeHostListener(HostListener listener) { // no HostListener support for 'file:' based VmIdentifiers }
{@inheritDoc}.

Note - the file: protocol currently does not support the notion of tracking active or inactive Java Virtual Machines. This method currently returns an empty set.

/** * {@inheritDoc}. * <p> * Note - the <em>file:</em> protocol currently does not support the * notion of tracking active or inactive Java Virtual Machines. This * method currently returns an empty set. */
public Set<Integer> activeVms() { return new HashSet<Integer>(0); } }