/**
* Creates a new instance of the counter.
*/
internal DoubleCounter(MonitorConfig config, Clock clock)
: base(config.withAdditionalTag(DataSourceType.NORMALIZED))
{
// This class will reset the value so it is not a monotonically increasing value as
// expected for type=COUNTER. This class looks like a counter to the user and a gauge to
// the publishing pipeline receiving the value.
count = new StepLong(0L, clock);
}
public override bool Equals(Object obj)
{
if (this == obj)
{
return(true);
}
if (obj == null || !(obj is MonitorConfig))
{
return(false);
}
MonitorConfig m = (MonitorConfig)obj;
return(name.Equals(m.getName()) &&
tags.Equals(m.getTags()) &&
policy.Equals(m.getPublishingPolicy()));
}
/**
* Creates a new instance.
*
* @param config config settings associated with the metric
* @param timestamp point in time when the metric value was sampled
* @param value value of the metric
*/
public Metric(MonitorConfig config, long timestamp, Object value)
{
this.config = Preconditions.checkNotNull(config, "config");
this.timestamp = timestamp;
this.value = Preconditions.checkNotNull(value, "value");
}
/**
* Create a new composite.
*
* @param config configuration for the composite. It is recommended that the configuration
* shares common tags with the sub-monitors, but it is not enforced.
* @param monitors list of sub-monitors
*/
public BasicCompositeMonitor(MonitorConfig config, List <IMonitor> monitors)
: base(config)
{
this.monitors = new List <IMonitor>(monitors);
}
/**
* Creates a new instance of the counter.
*/
public BasicInformational(MonitorConfig config)
: base(config.withAdditionalTag(DataSourceType.INFORMATIONAL))
{
}
/**
* Creates a new instance of the gauge.
*
* @param config configuration for this monitor
* @param function a function used to fetch the value on demand
*/
public BasicGauge(MonitorConfig config, Callable <T> function)
: base(config.withAdditionalTag(DataSourceType.GAUGE))
{
this.function = function;
}
/**
* Create a new builder initialized with the specified config.
*/
public Builder(MonitorConfig config) : this(config.getName())
{
withTags(config.getTags());
withPublishingPolicy(config.getPublishingPolicy());
}
/**
* Creates a new instance of the gauge using a specific clock. Useful for unit testing.
*/
internal MaxGauge(MonitorConfig config, Clock clock)
: base(config.withAdditionalTag(DataSourceType.GAUGE))
{
max = new StepLong(0L, clock);
}
/**
* Creates a new instance of the gauge.
*/
public MaxGauge(MonitorConfig config)
: this(config, ClockWithOffset.INSTANCE)
{
}
/**
* Creates a new instance of the counter.
*/
public BasicCounter(MonitorConfig config)
: base(config.withAdditionalTag(DataSourceType.COUNTER))
{
}
/**
* Create a new builder initialized with the specified config.
*/
public Builder(MonitorConfig config) : this(config.getName())
{
withTags(config.getTags());
withPublishingPolicy(config.getPublishingPolicy());
}
/**
* Returns a copy of the current MonitorConfig.
*/
private MonitorConfig.Builder copy()
{
return(MonitorConfig.builder(name).withTags(tags).withPublishingPolicy(policy));
}
/**
* Creates a new instance of the counter.
*/
public StepCounter(MonitorConfig config)
: this(config, ClockWithOffset.INSTANCE)
{
}