| Interface | Description |
|---|---|
| Metric |
Metric class that allows metric visitors to visit it to get its information.
|
| MetricsAccessor |
A MetricsAccessor allows users to retrieve metric values, based on group name and metric name,
though specific metrics system, such as JMX.
|
| MetricsRegistry |
A MetricsRegistry allows its users to create new
Metrics and
have those metrics wired to specific metrics systems, such as JMX, provided by MetricsReporters. |
| MetricsReporter |
A MetricsReporter is the interface that different metrics sinks, such as JMX, implement to receive
metrics from the Samza framework and Samza jobs.
|
| MetricsReporterFactory |
Build a
MetricsReporter |
| MetricsValidator |
A MetricsValidator reads the job's metrics values by using the
MetricsAccessor,
and validate them. |
| ReadableMetricsRegistry |
A ReadableMetricsRegistry is a
MetricsRegistry that also
allows read access to the metrics for which it is responsible. |
| ReadableMetricsRegistryListener | |
| Reservoir |
A reservoir interface to store, update and display values
|
| Class | Description |
|---|---|
| Counter |
A counter is a
Metric that represents a cumulative value. |
| Gauge<T> |
A Gauge is a
Metric that wraps some instance of T in a thread-safe
reference and allows it to be set or retrieved. |
| ListGauge<T> | |
| MetricsVisitor |
A MetricsVisitor can be used to process each metric in a
ReadableMetricsRegistry,
encapsulating the logic of what to be done with each metric in the counter and gauge methods. |
| SamzaHistogram | |
| SlidingTimeWindowReservoir |
An implemented
Reservoir used to store values that appear in a
sliding time window |
| Snapshot |
A statistical snapshot of a collection of values
|
| Timer |
A timer metric that stores time duration and provides
Snapshot of the
durations. |
| Exception | Description |
|---|---|
| MetricsValidationFailureException |
Thrown when the metrics validation fails.
|