org.apache.accumulo.tracer

Class AsyncSpanReceiver<SpanKey,Destination>

java.lang.Object

org.apache.accumulo.tracer.AsyncSpanReceiver<SpanKey,Destination>

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.htrace.SpanReceiver

Direct Known Subclasses:

SendSpansViaThrift

public abstract class AsyncSpanReceiver<SpanKey,Destination>
extends Object
implements org.apache.htrace.SpanReceiver

Deliver Span information periodically to a destination.

• Send host and service information with the span.
• Cache Destination objects by some key that can be extracted from the span.
• Can be used to queue spans up for delivery over RPC, or for saving into a file.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	host
static String	QUEUE_SIZE
static String	SEND_TIMER_MILLIS
protected AbstractQueue<RemoteSpan>	sendQueue
protected String	service

Constructor Summary

Constructors

Constructor and Description
AsyncSpanReceiver(org.apache.htrace.HTraceConfiguration conf)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
static List<Annotation>	convertToAnnotations(List<org.apache.htrace.TimelineAnnotation> annotations)
static Map<String,String>	convertToStrings(Map<byte[],byte[]> bytesMap)
protected abstract Destination	createDestination(SpanKey key)
protected abstract SpanKey	getSpanKey(Map<String,String> data)
void	receiveSpan(org.apache.htrace.Span s)
protected abstract void	send(Destination resource, RemoteSpan span)
protected void	sendSpans()

Methods inherited from class java.lang.Object

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

Field Detail

SEND_TIMER_MILLIS

public static final String SEND_TIMER_MILLIS

See Also:

Constant Field Values

QUEUE_SIZE

public static final String QUEUE_SIZE

See Also:

Constant Field Values

host

protected String host

service

protected String service

sendQueue

protected final AbstractQueue<RemoteSpan> sendQueue

Constructor Detail

AsyncSpanReceiver

public AsyncSpanReceiver(org.apache.htrace.HTraceConfiguration conf)

Method Detail

createDestination

protected abstract Destination createDestination(SpanKey key)
                                          throws Exception

Throws:

Exception

send

protected abstract void send(Destination resource,
        RemoteSpan span)
                      throws Exception

Throws:

Exception

getSpanKey

protected abstract SpanKey getSpanKey(Map<String,String> data)

sendSpans

protected void sendSpans()

convertToStrings

public static Map<String,String> convertToStrings(Map<byte[],byte[]> bytesMap)

convertToAnnotations

public static List<Annotation> convertToAnnotations(List<org.apache.htrace.TimelineAnnotation> annotations)

receiveSpan

public void receiveSpan(org.apache.htrace.Span s)

Specified by:

receiveSpan in interface org.apache.htrace.SpanReceiver

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable