org.attribyte.essem.sysmon.linux

Class SystemMonitor

java.lang.Object

org.attribyte.essem.sysmon.linux.SystemMonitor

public class SystemMonitor
extends java.lang.Object

Expose system load, memory, network and storage stage as metrics.

Field Summary

Fields

Modifier and Type	Field and Description
static <any>	DEFAULT_MEMINFO_KEYS The default keys instrumented for memory information.
static KeyFilter	DEFAULT_STORAGE_TYPES The filesystem storage types instrumented by default.

Constructor Summary

Constructors

Constructor and Description
SystemMonitor(int pollFrequencySeconds) Creates a system monitor with default values.
SystemMonitor(int pollFrequencySeconds, java.util.Collection<java.lang.String> meminfoKeys, KeyFilter storageTypeFilter, KeyFilter networkDeviceFilter, Logger logger) Creates a system monitor.
SystemMonitor(int pollFrequencySeconds, Logger logger) Creates a system monitor with default values.

Method Summary

Modifier and Type	Method and Description
java.util.Map<java.lang.String,Metric>	getMetrics()
void	shutdown() Shutdown the monitor.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MEMINFO_KEYS

public static final <any> DEFAULT_MEMINFO_KEYS

The default keys instrumented for memory information.

DEFAULT_STORAGE_TYPES

public static final KeyFilter DEFAULT_STORAGE_TYPES

The filesystem storage types instrumented by default.

Constructor Detail

SystemMonitor

public SystemMonitor(int pollFrequencySeconds)

Creates a system monitor with default values.

Parameters:

pollFrequencySeconds - The poll frequency in seconds.

SystemMonitor

public SystemMonitor(int pollFrequencySeconds,
                     Logger logger)

Creates a system monitor with default values.

Parameters:

pollFrequencySeconds - The poll frequency in seconds.

logger - A logger. May be null.

SystemMonitor

public SystemMonitor(int pollFrequencySeconds,
                     java.util.Collection<java.lang.String> meminfoKeys,
                     KeyFilter storageTypeFilter,
                     KeyFilter networkDeviceFilter,
                     Logger logger)

Creates a system monitor.

Parameters:

pollFrequencySeconds - The poll frequency in seconds.

meminfoKeys - The instrumented keys for memory info.

storageTypeFilter - Filters only instrumented storage types.

networkDeviceFilter - Filters only instrumented network devices.

logger - A logger. May be null.

Method Detail

getMetrics

public java.util.Map<java.lang.String,Metric> getMetrics()

shutdown

public void shutdown()

Shutdown the monitor.