org.apache.hadoop.hbase.trace

Class SpanReceiverHost

java.lang.Object

org.apache.hadoop.hbase.trace.SpanReceiverHost

@InterfaceAudience.Private
public class SpanReceiverHost
extends Object

This class provides functions for reading the names of SpanReceivers from hbase-site.xml, adding those SpanReceivers to the Tracer, and closing those SpanReceivers when appropriate.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	SpanReceiverHost.SingletonHolder

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	closed
private org.apache.hadoop.conf.Configuration	conf
private static org.slf4j.Logger	LOG
private Collection<org.apache.htrace.core.SpanReceiver>	receivers
static String	SPAN_RECEIVERS_CONF_KEY

Constructor Summary

Constructors

Constructor and Description
SpanReceiverHost(org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method and Description
void	closeReceivers() Calls close() on all SpanReceivers created by this SpanReceiverHost.
static org.apache.hadoop.conf.Configuration	getConfiguration()
static SpanReceiverHost	getInstance(org.apache.hadoop.conf.Configuration conf)
void	loadSpanReceivers() Reads the names of classes specified in the hbase.trace.spanreceiver.classes property and instantiates and registers them with the Tracer.

Methods inherited from class java.lang.Object

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

Field Detail

SPAN_RECEIVERS_CONF_KEY

public static final String SPAN_RECEIVERS_CONF_KEY

See Also:

Constant Field Values

LOG

private static final org.slf4j.Logger LOG

receivers

private Collection<org.apache.htrace.core.SpanReceiver> receivers

conf

private org.apache.hadoop.conf.Configuration conf

closed

private boolean closed

Constructor Detail

SpanReceiverHost

SpanReceiverHost(org.apache.hadoop.conf.Configuration conf)

Method Detail

getInstance

public static SpanReceiverHost getInstance(org.apache.hadoop.conf.Configuration conf)

getConfiguration

public static org.apache.hadoop.conf.Configuration getConfiguration()

loadSpanReceivers

public void loadSpanReceivers()

Reads the names of classes specified in the hbase.trace.spanreceiver.classes property and instantiates and registers them with the Tracer.

closeReceivers

public void closeReceivers()

Calls close() on all SpanReceivers created by this SpanReceiverHost.