org.apache.slider.server.servicemonitor

Class Probe

java.lang.Object

org.apache.slider.server.servicemonitor.Probe

All Implemented Interfaces:

MonitorKeys

Direct Known Subclasses:

HttpProbe, PortProbe, YarnApplicationProbe

public abstract class Probe
extends Object
implements MonitorKeys

Base class of all probes.

Field Summary

Fields

Modifier and Type	Field and Description
long	bootstrapFinished
long	bootstrapStarted
protected org.apache.hadoop.conf.Configuration	conf
int	failureCount
int	successCount

Fields inherited from interface org.apache.slider.server.servicemonitor.MonitorKeys

BOOTSTRAP_TIMEOUT_DEFAULT, DEFAULT_PROBE_HOST, DEFAULT_PROBE_PORT, JT_PROBE_BOOTSTRAP_TIMEOUT, JT_PROBE_BOOTSTRAP_TIMEOUT_DEFAULT, JT_PROBE_ENABLED, LS_PROBE_BOOTSTRAP_TIMEOUT, LS_PROBE_BOOTSTRAP_TIMEOUT_DEFAULT, LS_PROBE_DEFAULT, LS_PROBE_ENABLED, LS_PROBE_PATH, MONITOR_BOOTSTRAP_TIMEOUT, MONITOR_DEPENDENCY_DFSLIVE, MONITOR_KEY_PREFIX, MONITOR_PROBE_INTERVAL, MONITOR_PROBE_TIMEOUT, MONITOR_REPORT_INTERVAL, MONITOR_REPORTER, PID_PROBE_ENABLED, PID_PROBE_PIDFILE, PORT_PROBE_BOOTSTRAP_TIMEOUT, PORT_PROBE_BOOTSTRAP_TIMEOUT_DEFAULT, PORT_PROBE_CONNECT_TIMEOUT, PORT_PROBE_CONNECT_TIMEOUT_DEFAULT, PORT_PROBE_ENABLED, PORT_PROBE_HOST, PORT_PROBE_PORT, PROBE_INTERVAL_DEFAULT, PROBE_TIMEOUT_DEFAULT, REPORT_INTERVAL_DEFAULT, WEB_PROBE_BOOTSTRAP_TIMEOUT, WEB_PROBE_BOOTSTRAP_TIMEOUT_DEFAULT, WEB_PROBE_CONNECT_TIMEOUT, WEB_PROBE_DEFAULT_CODE, WEB_PROBE_DEFAULT_URL, WEB_PROBE_ENABLED, WEB_PROBE_MAX, WEB_PROBE_MIN, WEB_PROBE_URL

Constructor Summary

Constructors

Constructor and Description
Probe(String name, org.apache.hadoop.conf.Configuration conf) Create a probe of a specific name

Method Summary

Methods

Modifier and Type	Method and Description
void	beginBootstrap()
void	endBootstrap()
String	getName()
void	init() perform any prelaunch initialization
boolean	isBooted()
abstract ProbeStatus	ping(boolean livePing) Ping the endpoint.
void	setBooted(boolean booted)
protected void	setName(String name)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

conf

protected final org.apache.hadoop.conf.Configuration conf

successCount

public int successCount

failureCount

public int failureCount

bootstrapStarted

public long bootstrapStarted

bootstrapFinished

public long bootstrapFinished

Constructor Detail

Probe

public Probe(String name,
     org.apache.hadoop.conf.Configuration conf)

Create a probe of a specific name

Parameters:

name - probe name

conf - configuration being stored.

Method Detail

setName

protected void setName(String name)

getName

public String getName()

toString

public String toString()

Overrides:

toString in class Object

init

public void init()
          throws IOException

perform any prelaunch initialization

Throws:

IOException

ping

public abstract ProbeStatus ping(boolean livePing)

Ping the endpoint. All exceptions must be caught and included in the (failure) status.

Parameters:

livePing - is the ping live: true for live; false for boot time

Returns:

the status

beginBootstrap

public void beginBootstrap()

endBootstrap

public void endBootstrap()

isBooted

public boolean isBooted()

setBooted

public void setBooted(boolean booted)