com.newrelic.agent.tracing.samplers

Interface Sampler

All Known Implementing Classes:

AdaptiveSampler, AlwaysOffSampler, AlwaysOnSampler, ProbabilityBasedSampler, TraceRatioBasedSampler

public interface Sampler

Method Summary

Modifier and Type	Method and Description
float	calculatePriority(Transaction tx) Calculate the priority of a trace.
java.lang.String	getType() Get the description/name of this Sampler
static boolean	isValidTraceRatio(float ratio) Determine if the supplied float value is a valid value for the ratio value
static java.lang.String	traceIdFromTransaction(Transaction tx) Extract the trace id from the supplied Transaction instance

Method Detail

traceIdFromTransaction

static java.lang.String traceIdFromTransaction(Transaction tx)

Extract the trace id from the supplied Transaction instance

Parameters:

tx - The target Transaction

Returns:

the extracted trace id or null if the Transaction instance is null

isValidTraceRatio

static boolean isValidTraceRatio(float ratio)

Determine if the supplied float value is a valid value for the ratio value

Parameters:

ratio - the ration value to check

Returns:

true if the ratio is valid; false otherwise

calculatePriority

float calculatePriority(Transaction tx)

Calculate the priority of a trace. The value returned must be in the range of 0.0f - 2.0f.

Parameters:

tx - the transaction to calculate the priority for

Returns:

a priority value between 0.0f - 2.0f, inclusive

getType

java.lang.String getType()

Get the description/name of this Sampler

Returns:

the current Sampler's description