org.apache.avro.ipc.trace

Class TraceCollection

java.lang.Object

org.apache.avro.ipc.trace.TraceCollection

public class TraceCollection
extends Object

Provides statistics and representation of a collection of Trace's which share the same execution path. For instance: given the following execution pattern: b--d / a \ c--e We might want a report detailing statistics on across several Traces's. Such as a display of average timing data: [message] --- = average link time +++ = average compute time a <----++++++++++++++++++++++++++++++++++++++++---> b <----+++++++++++++++++++---> d <-----++++-----> c <---+++++-> e <+> This requires calculating averages of different timing data at each node in the call tree.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	TraceCollection.TraceComparotor
class	TraceCollection.TraceNodeStats Class to store statistics for a particular node in the RPC call tree.
class	TraceCollection.TraceTiming Class to store the timing data associated with a particluar trace.

Constructor Summary

Constructors

Constructor and Description
TraceCollection(Trace t) Create a TraceCollection using the given Trace as a model.

Method Summary

Methods

Modifier and Type	Method and Description
void	addTrace(Trace t) Add a trace to this collection.
int	getExecutionPathHash()
TraceCollection.TraceNodeStats	getNodeWithID(int hashCode)
TraceCollection.TraceNodeStats	getNodeWithIDRecurse(int hashCode, TraceCollection.TraceNodeStats start)
TraceCollection.TraceNodeStats	getRootNode()
TreeSet<Trace>	getTraces()
List<Trace>	longestTraces(int count) Returns the [count] longest traces in this collection.
String	printBrief() Print a brief description of this Trace Collection with some summary data.
String	printRecurse(TraceCollection.TraceNodeStats n, int depth)

Methods inherited from class java.lang.Object

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

Constructor Detail

TraceCollection

public TraceCollection(Trace t)

Create a TraceCollection using the given Trace as a model. Note that we do not add this trace to the statistics tracking in this constructor.

Method Detail

getNodeWithID

public TraceCollection.TraceNodeStats getNodeWithID(int hashCode)

getNodeWithIDRecurse

public TraceCollection.TraceNodeStats getNodeWithIDRecurse(int hashCode,
                                                  TraceCollection.TraceNodeStats start)

getRootNode

public TraceCollection.TraceNodeStats getRootNode()

getExecutionPathHash

public int getExecutionPathHash()

getTraces

public TreeSet<Trace> getTraces()

longestTraces

public List<Trace> longestTraces(int count)

Returns the [count] longest traces in this collection.

addTrace

public void addTrace(Trace t)

Add a trace to this collection. Timing data from this trace will then be included in aggregate statistics.

printBrief

public String printBrief()

Print a brief description of this Trace Collection with some summary data. Useful for debugging or quick profiling.

printRecurse

public String printRecurse(TraceCollection.TraceNodeStats n,
                  int depth)