Hyperspace::MetricsHandler Class Reference

Collects and publishes Hyperspace metrics. More...

#include <MetricsHandler.h>

Inheritance diagram for Hyperspace::MetricsHandler:

Collaboration diagram for Hyperspace::MetricsHandler:

Public Member Functions
	MetricsHandler (PropertiesPtr &props)
	Constructor. More...
virtual	~MetricsHandler ()
	Destructor. More...
void	start_collecting ()
	Starts metrics collection. More...
void	stop_collecting ()
	Stops metrics collection. More...
virtual void	handle (EventPtr &event)
	Collects and publishes metrics. More...
void	request_increment ()
	Increments request count. More...
Public Member Functions inherited from Hypertable::DispatchHandler
virtual	~DispatchHandler ()
	Destructor. More...

Private Attributes
Comm *	m_comm
	Comm layer. More...
MetricsCollectorGangliaPtr	m_ganglia_collector
	Ganglia metrics collector. More...
MetricsProcess	m_metrics_process
	General process metrics tracker. More...
int64_t	m_last_timestamp
	Timestamp of last metrics collection More...
int32_t	m_collection_interval {}
	Metrics collection interval More...
interval_metric< int64_t >	m_requests {}
	Hyperspace requests More...

Detailed Description

Collects and publishes Hyperspace metrics.

This class acts as the timer dispatch handler for periodic metrics collection for Hyperspace.

Definition at line 51 of file MetricsHandler.h.

Constructor & Destructor Documentation

MetricsHandler::MetricsHandler

(

PropertiesPtr &

props

)

Constructor.

Initializes m_collection_interval to the property Hypertable.Monitoring.Interval and allocates a Ganglia collector object, initializing it with "hyperspace" and Hypertable.Metrics.Ganglia.Port. Lastly, calls Comm::set_timer() to register a timer for m_collection_interval milliseconds in the future and passes this as the timer handler.

Parameters

props

Properties object

Definition at line 44 of file MetricsHandler.cc.

MetricsHandler::~MetricsHandler ( )

virtual

Destructor.

Cancels the timer.

Definition at line 51 of file MetricsHandler.cc.

Member Function Documentation

void MetricsHandler::handle ( Hypertable::EventPtr &  event )

virtual

Collects and publishes metrics.

This method updates the requests/s and general process metrics and publishes them via m_ganglia_collector. After metrics have been collected, the timer is re-registered for m_collection_interval milliseconds in the future.

Parameters

event

Comm layer timer event

Implements Hypertable::DispatchHandler.

Definition at line 66 of file MetricsHandler.cc.

void Hyperspace::MetricsHandler::request_increment ( )

inline

Increments request count.

Increments m_requests which is used in computing requests/s.

Definition at line 85 of file MetricsHandler.h.

void MetricsHandler::start_collecting

(

)

Starts metrics collection.

Definition at line 54 of file MetricsHandler.cc.

void MetricsHandler::stop_collecting

(

)

Stops metrics collection.

Definition at line 60 of file MetricsHandler.cc.

Member Data Documentation

int32_t Hyperspace::MetricsHandler::m_collection_interval {}

private

Metrics collection interval

Definition at line 104 of file MetricsHandler.h.

Comm* Hyperspace::MetricsHandler::m_comm

private

Comm layer.

Definition at line 92 of file MetricsHandler.h.

MetricsCollectorGangliaPtr Hyperspace::MetricsHandler::m_ganglia_collector

private

Ganglia metrics collector.

Definition at line 95 of file MetricsHandler.h.

int64_t Hyperspace::MetricsHandler::m_last_timestamp

private

Timestamp of last metrics collection

Definition at line 101 of file MetricsHandler.h.

MetricsProcess Hyperspace::MetricsHandler::m_metrics_process

private

General process metrics tracker.

Definition at line 98 of file MetricsHandler.h.

interval_metric<int64_t> Hyperspace::MetricsHandler::m_requests {}

private

Hyperspace requests

Definition at line 107 of file MetricsHandler.h.

---

The documentation for this class was generated from the following files:

• /home/doug/src/hypertable/src/cc/Hyperspace/MetricsHandler.h
• /home/doug/src/hypertable/src/cc/Hyperspace/MetricsHandler.cc