Package com.elastisys.autoscaler.metricstreamers.cloudwatch

Class CloudWatchMetricStreamer

java.lang.Object

com.elastisys.autoscaler.metricstreamers.cloudwatch.CloudWatchMetricStreamer

All Implemented Interfaces:

com.elastisys.autoscaler.core.api.Configurable<CloudWatchMetricStreamerConfig>, com.elastisys.autoscaler.core.api.Service<CloudWatchMetricStreamerConfig>, com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStreamer<CloudWatchMetricStreamerConfig>

public class CloudWatchMetricStreamer
extends java.lang.Object
implements com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStreamer<CloudWatchMetricStreamerConfig>

Implementation of MetricStreamer that uses AWS CloudWatch as its back-end metric source.

Constructor Summary

Constructors

Constructor	Description
CloudWatchMetricStreamer(org.slf4j.Logger logger, java.util.concurrent.ScheduledExecutorService executor, com.elastisys.scale.commons.eventbus.EventBus eventBus)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
void	configure(CloudWatchMetricStreamerConfig configuration)
void	fetch()
CloudWatchMetricStreamerConfig	getConfiguration()
java.lang.Class<CloudWatchMetricStreamerConfig>	getConfigurationClass()
com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStream	getMetricStream(java.lang.String metricStreamId)
java.util.List<com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStream>	getMetricStreams()
com.elastisys.autoscaler.core.api.types.ServiceStatus	getStatus()
void	start()
void	stop()
void	validate(CloudWatchMetricStreamerConfig configuration)

Methods inherited from class java.lang.Object

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

Constructor Detail

CloudWatchMetricStreamer

@Inject
public CloudWatchMetricStreamer(org.slf4j.Logger logger,
                                java.util.concurrent.ScheduledExecutorService executor,
                                com.elastisys.scale.commons.eventbus.EventBus eventBus)

Creates a new instance. The new instance will be in an unconfigured and stopped state.

Parameters:

logger - Logger to use.

executor - Task execution service for performing work in separate threads.

eventBus - The EventBus on which to send out collected MetricValues.

Method Detail

validate

public void validate(CloudWatchMetricStreamerConfig configuration)
              throws java.lang.IllegalArgumentException

Specified by:

validate in interface com.elastisys.autoscaler.core.api.Configurable<CloudWatchMetricStreamerConfig>

Throws:

java.lang.IllegalArgumentException

configure

public void configure(CloudWatchMetricStreamerConfig configuration)
               throws java.lang.IllegalArgumentException

Specified by:

configure in interface com.elastisys.autoscaler.core.api.Configurable<CloudWatchMetricStreamerConfig>

Throws:

java.lang.IllegalArgumentException

getConfiguration

public CloudWatchMetricStreamerConfig getConfiguration()

Specified by:

getConfiguration in interface com.elastisys.autoscaler.core.api.Configurable<CloudWatchMetricStreamerConfig>

start

public void start()
           throws java.lang.IllegalStateException

Specified by:

start in interface com.elastisys.autoscaler.core.api.Service<CloudWatchMetricStreamerConfig>

Throws:

java.lang.IllegalStateException

stop

public void stop()

Specified by:

stop in interface com.elastisys.autoscaler.core.api.Service<CloudWatchMetricStreamerConfig>

getStatus

public com.elastisys.autoscaler.core.api.types.ServiceStatus getStatus()

Specified by:

getStatus in interface com.elastisys.autoscaler.core.api.Service<CloudWatchMetricStreamerConfig>

getConfigurationClass

public java.lang.Class<CloudWatchMetricStreamerConfig> getConfigurationClass()

Specified by:

getConfigurationClass in interface com.elastisys.autoscaler.core.api.Configurable<CloudWatchMetricStreamerConfig>

getMetricStreams

public java.util.List<com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStream> getMetricStreams()

Specified by:

getMetricStreams in interface com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStreamer<CloudWatchMetricStreamerConfig>

fetch

public void fetch()
           throws com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStreamException,
                  java.lang.IllegalStateException

Specified by:

fetch in interface com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStreamer<CloudWatchMetricStreamerConfig>

Throws:

com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStreamException

java.lang.IllegalStateException

getMetricStream

public com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStream getMetricStream(java.lang.String metricStreamId)
                                                                                         throws java.lang.IllegalArgumentException

Specified by:

getMetricStream in interface com.elastisys.autoscaler.core.monitoring.metricstreamer.api.MetricStreamer<CloudWatchMetricStreamerConfig>

Throws:

java.lang.IllegalArgumentException