Package fish.payara.microprofile.metrics.writer

Class OpenMetricsExporter

java.lang.Object

fish.payara.microprofile.metrics.writer.OpenMetricsExporter

All Implemented Interfaces:

MetricExporter

Direct Known Subclasses:

FilteredMetricsExporter

public class OpenMetricsExporter
extends Object
implements MetricExporter

Writes Metrics according to the OpenMetrics standard as defined in microprofile-metrics-spec-2.3.pdf. The append method code is organised so that its output is reflected in the use of appendHELP(String, Metadata), appendTYPE(String, OpenMetricsType) and appendValue(String, Tag[], Number) which each emit a single output line.

Since:

5.202

Author:

Jan Bernitt

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	OpenMetricsExporter.OpenMetricsType

Field Summary

Fields

Modifier and Type	Field	Description
protected Set<String>	helpWrittenByGlobalName
protected PrintWriter	out
protected String	scope
protected Set<String>	typeWrittenByGlobalName

Fields inherited from interface fish.payara.microprofile.metrics.writer.MetricExporter

LOGGER

Constructor Summary

Constructors

Modifier	Constructor	Description
	OpenMetricsExporter(Writer out)
protected	OpenMetricsExporter(String scope, PrintWriter out, Set<String> typeWrittenByGlobalName, Set<String> helpWrittenByGlobalName)

Method Summary

Modifier and Type	Method	Description
protected void	appendHELP(String globalName, org.eclipse.microprofile.metrics.Metadata metadata)
protected void	appendTYPE(String globalName, OpenMetricsExporter.OpenMetricsType type)
protected void	appendValue(String globalName, org.eclipse.microprofile.metrics.Tag[] tags, Number value)
void	export(org.eclipse.microprofile.metrics.MetricID metricID, org.eclipse.microprofile.metrics.Counter counter, org.eclipse.microprofile.metrics.Metadata metadata)
void	export(org.eclipse.microprofile.metrics.MetricID metricID, org.eclipse.microprofile.metrics.Gauge<?> gauge, org.eclipse.microprofile.metrics.Metadata metadata)
void	export(org.eclipse.microprofile.metrics.MetricID metricID, org.eclipse.microprofile.metrics.Histogram histogram, org.eclipse.microprofile.metrics.Metadata metadata)
void	export(org.eclipse.microprofile.metrics.MetricID metricID, org.eclipse.microprofile.metrics.Timer timer, org.eclipse.microprofile.metrics.Metadata metadata)
void	exportComplete()
MetricExporter	in(String scope, boolean asNode)	Creates a new MetricExporter with the provided scope.
protected String	roundValue(Number value)
static String	sanitizeMetricName(String name)
protected static String	tagsToString(org.eclipse.microprofile.metrics.Tag[] tags)

Methods inherited from class java.lang.Object

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

Methods inherited from interface fish.payara.microprofile.metrics.writer.MetricExporter

export, in

Field Detail

scope

protected final String scope

out

protected final PrintWriter out

typeWrittenByGlobalName

protected final Set<String> typeWrittenByGlobalName

helpWrittenByGlobalName

protected final Set<String> helpWrittenByGlobalName

Constructor Detail

OpenMetricsExporter

public OpenMetricsExporter(Writer out)

OpenMetricsExporter

protected OpenMetricsExporter(String scope,
                              PrintWriter out,
                              Set<String> typeWrittenByGlobalName,
                              Set<String> helpWrittenByGlobalName)

Method Detail

in

public MetricExporter in(String scope,
                         boolean asNode)

Description copied from interface: MetricExporter

Creates a new MetricExporter with the provided scope.

Specified by:

in in interface MetricExporter

Parameters:

scope - the scope to use in the export

Returns:

A new instance of this MetricExporter with the provided scope set, this instance is kept unchanged and will continue to use its current scope. Both, this MetricExporter and the returned one will however share other internal state that is related to the output written so far.

exportComplete

public void exportComplete()

Specified by:

exportComplete in interface MetricExporter

export

public void export(org.eclipse.microprofile.metrics.MetricID metricID,
                   org.eclipse.microprofile.metrics.Counter counter,
                   org.eclipse.microprofile.metrics.Metadata metadata)

Specified by:

export in interface MetricExporter

export

public void export(org.eclipse.microprofile.metrics.MetricID metricID,
                   org.eclipse.microprofile.metrics.Gauge<?> gauge,
                   org.eclipse.microprofile.metrics.Metadata metadata)

Specified by:

export in interface MetricExporter

export

public void export(org.eclipse.microprofile.metrics.MetricID metricID,
                   org.eclipse.microprofile.metrics.Histogram histogram,
                   org.eclipse.microprofile.metrics.Metadata metadata)

Specified by:

export in interface MetricExporter

export

public void export(org.eclipse.microprofile.metrics.MetricID metricID,
                   org.eclipse.microprofile.metrics.Timer timer,
                   org.eclipse.microprofile.metrics.Metadata metadata)

Specified by:

export in interface MetricExporter

appendTYPE

protected void appendTYPE(String globalName,
                          OpenMetricsExporter.OpenMetricsType type)

appendHELP

protected void appendHELP(String globalName,
                          org.eclipse.microprofile.metrics.Metadata metadata)

appendValue

protected void appendValue(String globalName,
                           org.eclipse.microprofile.metrics.Tag[] tags,
                           Number value)

roundValue

protected String roundValue(Number value)

tagsToString

protected static String tagsToString(org.eclipse.microprofile.metrics.Tag[] tags)

sanitizeMetricName

public static String sanitizeMetricName(String name)