org.apache.slider.server.servicemonitor

Class PortProbe

java.lang.Object

org.apache.slider.server.servicemonitor.Probe

org.apache.slider.server.servicemonitor.PortProbe

All Implemented Interfaces:

MonitorKeys

public class PortProbe
extends Probe

Probe for a port being open

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	log

Fields inherited from class org.apache.slider.server.servicemonitor.Probe

bootstrapFinished, bootstrapStarted, conf, failureCount, 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
PortProbe(String host, int port, int timeout, String name, org.apache.hadoop.conf.Configuration conf)

Method Summary

Methods

Modifier and Type	Method and Description
static PortProbe	createPortProbe(org.apache.hadoop.conf.Configuration conf, String hostname, int port)
void	init() perform any prelaunch initialization
ProbeStatus	ping(boolean livePing) Try to connect to the (host,port); a failure to connect within the specified timeout is a failure

Methods inherited from class org.apache.slider.server.servicemonitor.Probe

beginBootstrap, endBootstrap, getName, isBooted, setBooted, setName, toString

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.slf4j.Logger log

Constructor Detail

PortProbe

public PortProbe(String host,
         int port,
         int timeout,
         String name,
         org.apache.hadoop.conf.Configuration conf)
          throws IOException

Throws:

IOException

Method Detail

createPortProbe

public static PortProbe createPortProbe(org.apache.hadoop.conf.Configuration conf,
                        String hostname,
                        int port)
                                 throws IOException

Throws:

IOException

init

public void init()
          throws IOException

Description copied from class: Probe

perform any prelaunch initialization

Overrides:

init in class Probe

Throws:

IOException

ping

public ProbeStatus ping(boolean livePing)

Try to connect to the (host,port); a failure to connect within the specified timeout is a failure

Specified by:

ping in class Probe

Parameters:

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

Returns:

the outcome