Package org.apache.pulsar.broker.stats.prometheus

Class PrometheusMetricsServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.apache.pulsar.broker.stats.prometheus.PrometheusMetricsServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class PrometheusMetricsServlet
extends javax.servlet.http.HttpServlet

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final String	cluster
static final String	DEFAULT_METRICS_PATH
protected ExecutorService	executor
protected final int	executorMaxThreads
protected List<PrometheusRawMetricsProvider>	metricsProviders
protected final long	metricsServletTimeoutMs
static final String	PROMETHEUS_CONTENT_TYPE_004

Constructor Summary

Constructors

Constructor	Description
PrometheusMetricsServlet(long metricsServletTimeoutMs, String cluster)
PrometheusMetricsServlet(long metricsServletTimeoutMs, String cluster, int executorMaxThreads)

Method Summary

Modifier and Type	Method	Description
void	addRawMetricsProvider(PrometheusRawMetricsProvider metricsProvider)
void	destroy()
protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
void	init()

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_METRICS_PATH

public static final String DEFAULT_METRICS_PATH

See Also:

• Constant Field Values

PROMETHEUS_CONTENT_TYPE_004

public static final String PROMETHEUS_CONTENT_TYPE_004

See Also:

• Constant Field Values

metricsServletTimeoutMs

protected final long metricsServletTimeoutMs

cluster

protected final String cluster

metricsProviders

protected List<PrometheusRawMetricsProvider> metricsProviders

executor

protected ExecutorService executor

executorMaxThreads

protected final int executorMaxThreads

Constructor Details

PrometheusMetricsServlet

public PrometheusMetricsServlet(long metricsServletTimeoutMs,
 String cluster)

PrometheusMetricsServlet

public PrometheusMetricsServlet(long metricsServletTimeoutMs,
 String cluster,
 int executorMaxThreads)

Method Details

init

public void init()
          throws javax.servlet.ServletException

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
 javax.servlet.http.HttpServletResponse response)

Overrides:

doGet in class javax.servlet.http.HttpServlet

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Servlet

Overrides:

destroy in class javax.servlet.GenericServlet

addRawMetricsProvider

public void addRawMetricsProvider(PrometheusRawMetricsProvider metricsProvider)