Package io.micrometer.core.instrument.simple

Class SimpleMeterRegistry

java.lang.Object
io.micrometer.core.instrument.MeterRegistry
io.micrometer.core.instrument.simple.SimpleMeterRegistry
public class SimpleMeterRegistry extends MeterRegistry
A minimal meter registry implementation primarily used for tests.

  • Constructor Details

    • SimpleMeterRegistry

      public SimpleMeterRegistry()

    • SimpleMeterRegistry

      public SimpleMeterRegistry(SimpleConfig config, Clock clock)

  • Method Details

    • newDistributionSummary

      protected DistributionSummary newDistributionSummary(Meter.Id id, DistributionStatisticConfig distributionStatisticConfig, double scale)
      Description copied from class: MeterRegistry
      Build a new distribution summary to be added to the registry. This is guaranteed to only be called if the distribution summary doesn't already exist.
      Specified by:
      newDistributionSummary in class MeterRegistry
      Parameters:
      id - The id that uniquely identifies the distribution summary.
      distributionStatisticConfig - Configuration for published distribution statistics.
      scale - Multiply every recorded sample by this factor.
      Returns:
      A new distribution summary.

    • newMeter

      protected Meter newMeter(Meter.Id id, Meter.Type type, Iterable<Measurement> measurements)
      Description copied from class: MeterRegistry
      Build a new custom meter to be added to the registry. This is guaranteed to only be called if the custom meter doesn't already exist.
      Specified by:
      newMeter in class MeterRegistry
      Parameters:
      id - The id that uniquely identifies the custom meter.
      type - What kind of meter this is.
      measurements - A set of measurements describing how to sample this meter.
      Returns:
      A new custom meter.

    • newTimer

      protected Timer newTimer(Meter.Id id, DistributionStatisticConfig distributionStatisticConfig, PauseDetector pauseDetector)
      Description copied from class: MeterRegistry
      Build a new timer to be added to the registry. This is guaranteed to only be called if the timer doesn't already exist.
      Specified by:
      newTimer in class MeterRegistry
      Parameters:
      id - The id that uniquely identifies the timer.
      distributionStatisticConfig - Configuration for published distribution statistics.
      pauseDetector - The pause detector to use for coordinated omission compensation.
      Returns:
      A new timer.

    • newGauge

      protected <T> Gauge newGauge(Meter.Id id, @Nullable T obj, ToDoubleFunction<T> valueFunction)
      Description copied from class: MeterRegistry
      Build a new gauge to be added to the registry. This is guaranteed to only be called if the gauge doesn't already exist.
      Specified by:
      newGauge in class MeterRegistry
      Type Parameters:
      T - The type of the state object from which the gauge value is extracted.
      Parameters:
      id - The id that uniquely identifies the gauge.
      obj - State object used to compute a value.
      valueFunction - Function that is applied on the value for the number.
      Returns:
      A new gauge.

    • newCounter

      protected Counter newCounter(Meter.Id id)
      Description copied from class: MeterRegistry
      Build a new counter to be added to the registry. This is guaranteed to only be called if the counter doesn't already exist.
      Specified by:
      newCounter in class MeterRegistry
      Parameters:
      id - The id that uniquely identifies the counter.
      Returns:
      A new counter.

    • newLongTaskTimer

      protected LongTaskTimer newLongTaskTimer(Meter.Id id, DistributionStatisticConfig distributionStatisticConfig)
      Description copied from class: MeterRegistry
      Build a new long task timer to be added to the registry. This is guaranteed to only be called if the long task timer doesn't already exist.
      Overrides:
      newLongTaskTimer in class MeterRegistry
      Parameters:
      id - The id that uniquely identifies the long task timer.
      distributionStatisticConfig - Configuration for published distribution statistics.
      Returns:
      A new long task timer.

    • newFunctionTimer

      protected <T> FunctionTimer newFunctionTimer(Meter.Id id, T obj, ToLongFunction<T> countFunction, ToDoubleFunction<T> totalTimeFunction, TimeUnit totalTimeFunctionUnit)
      Description copied from class: MeterRegistry
      Build a new function timer to be added to the registry. This is guaranteed to only be called if the function timer doesn't already exist.
      Specified by:
      newFunctionTimer in class MeterRegistry
      Type Parameters:
      T - The type of the object upon which the value functions derives their measurements.
      Parameters:
      id - The id that uniquely identifies the function timer.
      obj - The state object from which the count and total functions derive measurements.
      countFunction - A monotonically increasing count function.
      totalTimeFunction - A monotonically increasing total time function.
      totalTimeFunctionUnit - The base unit of time of the totals returned by the total time function.
      Returns:
      A new function timer.

    • newFunctionCounter

      protected <T> FunctionCounter newFunctionCounter(Meter.Id id, T obj, ToDoubleFunction<T> countFunction)
      Description copied from class: MeterRegistry
      Build a new function counter to be added to the registry. This is guaranteed to only be called if the function counter doesn't already exist.
      Specified by:
      newFunctionCounter in class MeterRegistry
      Type Parameters:
      T - The type of the object upon which the value function derives a measurement.
      Parameters:
      id - The id that uniquely identifies the function counter.
      obj - The state object from which the count function derives a measurement.
      countFunction - A monotonically increasing count function.
      Returns:
      A new function counter.

    • getBaseTimeUnit

      protected TimeUnit getBaseTimeUnit()
      Specified by:
      getBaseTimeUnit in class MeterRegistry
      Returns:
      the registry's base TimeUnit. Must not be null.

    • defaultHistogramConfig

      protected DistributionStatisticConfig defaultHistogramConfig()
      Description copied from class: MeterRegistry
      Every custom registry implementation should define a default histogram expiry at a minimum: 
       DistributionStatisticConfig.builder()
    .expiry(defaultStep)
    .build()
    .merge(DistributionStatisticConfig.DEFAULT);
      Specified by:
      defaultHistogramConfig in class MeterRegistry
      Returns:
      The default distribution statistics config.

    • getMetersAsString

      @Incubating(since="1.9.0") public String getMetersAsString()
      A very simple implementation that tries to represent the contents of the registry. The output is meant to be readable by humans, please do not parse it programmatically because the format can change.
      Returns:
      text representation of the meters in the registry
      Since:
      1.9.0