Package org.opendaylight.serviceutils.metrics

Interface MetricProvider

  • All Known Implementing Classes:
    MetricProviderImpl, OSGiMetricProvider, OSGiPrometheusMetricProvider, PrometheusMetricProviderImpl, TestMetricProviderImpl
    public interface MetricProvider
    Factory to obtain a new metric for use by application code.

    This API is a mix of (parts of) the Coda Hale's Dropwizard's MetricRegistry, and Prometheus' API. ODL application wanting to expose metrics are strongly encouraged to obtain new metric instances through this factory, instead of directly using Dropwizard new MetricRegistry themselves. This allows infrautils.metrics to expose all applications' metrics together through current and future reporters. This API also includes some convenience such as preventing accidental re-use of Metric IDs by different ODL applications, as well as (perhaps more importantly) isolating ODL applications from each other and preventing one from grabbing and reading or worse modifying another application's metric. Metrics should only be used to expose from an application to reporters registered centrally by infrautils.metrics, and are never exposed between applications.

    The anchor Object parameter in each method is used to record which bundle registered the meter, and you almost always just use this for that argument. This is used in error messages if another bundle tries to register a duplicate ID, and could be used in the future to un-register metrics on bundle reload automatically instead of explicitly.

    The id String parameter in each method must be globally unique; an IllegalArgumentException is thrown if it has previously already been used. The convention is to use odl.<projectName>.<moduleName>.<metricName>, so e.g. odl.infrautils.jobcoordinator.jobsPending.

    Implementations of this interface are required to be thread-safe.

    Author:
    Michael Vorburger.ch

    • Method Detail

      • newMeter

        Meter newMeter​(MetricDescriptor descriptor)
        Create new Meter metric without labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        Returns:
        the Meter

      • newMeter

        Labeled<Meter> newMeter​(MetricDescriptor descriptor,
                        String labelName)
        Create new Meter metric with 1 label.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        labelName - name of the (only) label of this metric
        Returns:
        an object from which a Meter can be obtained, given 1 label value

      • newMeter

        Labeled<Labeled<Meter>> newMeter​(MetricDescriptor descriptor,
                                 String firstLabelName,
                                 String secondLabelName)
        Create new Meter metric with 2 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        Returns:
        an object from which a Meter can be obtained, given 2 label values

      • newMeter

        Labeled<Labeled<Labeled<Meter>>> newMeter​(MetricDescriptor descriptor,
                                          String firstLabelName,
                                          String secondLabelName,
                                          String thirdLabelName)
        Create new Meter metric with 3 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        thirdLabelName - name of the 3rd label of this metric
        Returns:
        an object from which a Meter can be obtained, given 3 label values

      • newMeter

        Labeled<Labeled<Labeled<Labeled<Meter>>>> newMeter​(MetricDescriptor descriptor,
                                                   String firstLabelName,
                                                   String secondLabelName,
                                                   String thirdLabelName,
                                                   String fourthLabelName)
        Create new Meter metric with 4 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        thirdLabelName - name of the 3rd label of this metric
        fourthLabelName - name of the 4th label of this metric
        Returns:
        an object from which a Meter can be obtained, given 3 label values

      • newMeter

        Labeled<Labeled<Labeled<Labeled<Labeled<Meter>>>>> newMeter​(MetricDescriptor descriptor,
                                                            String firstLabelName,
                                                            String secondLabelName,
                                                            String thirdLabelName,
                                                            String fourthLabelName,
                                                            String fifthLabelName)
        Create new Meter metric with 5 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        thirdLabelName - name of the 3rd label of this metric
        fourthLabelName - name of the 4th label of this metric
        fifthLabelName - name of the 5th label of this metric
        Returns:
        an object from which a Meter can be obtained, given 3 label values

      • newCounter

        Counter newCounter​(MetricDescriptor descriptor)
        Create new Counter metric without labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        Returns:
        the Counter

      • newCounter

        Labeled<Counter> newCounter​(MetricDescriptor descriptor,
                            String labelName)
        Create new Counter metric with 1 label.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        labelName - name of the (only) label of this metric
        Returns:
        an object from which a Counter can be obtained, given 1 label value

      • newCounter

        Labeled<Labeled<Counter>> newCounter​(MetricDescriptor descriptor,
                                     String firstLabelName,
                                     String secondLabelName)
        Create new Counter metric with 2 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        Returns:
        an object from which a Counter can be obtained, given 2 label values

      • newCounter

        Labeled<Labeled<Labeled<Counter>>> newCounter​(MetricDescriptor descriptor,
                                              String firstLabelName,
                                              String secondLabelName,
                                              String thirdLabelName)
        Create new Counter metric with 3 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        thirdLabelName - name of the 3rd label of this metric
        Returns:
        an object from which a Counter can be obtained, given 3 label values

      • newCounter

        Labeled<Labeled<Labeled<Labeled<Counter>>>> newCounter​(MetricDescriptor descriptor,
                                                       String firstLabelName,
                                                       String secondLabelName,
                                                       String thirdLabelName,
                                                       String fourthLabelName)
        Create new Counter metric with 4 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        thirdLabelName - name of the 3rd label of this metric
        fourthLabelName - name of the 4th label of this metric
        Returns:
        an object from which a Counter can be obtained, given 4 label values

      • newCounter

        Labeled<Labeled<Labeled<Labeled<Labeled<Counter>>>>> newCounter​(MetricDescriptor descriptor,
                                                                String firstLabelName,
                                                                String secondLabelName,
                                                                String thirdLabelName,
                                                                String fourthLabelName,
                                                                String fifthLabelName)
        Create new Counter metric with 5 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        thirdLabelName - name of the 3rd label of this metric
        fourthLabelName - name of the 4th label of this metric
        fifthLabelName - name of the 5th label of this metric
        Returns:
        an object from which a Counter can be obtained, given 5 label values

      • newTimer

        Timer newTimer​(MetricDescriptor descriptor)
        Create new Timer metric without labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        Returns:
        the Timer

      • newTimer

        Labeled<Timer> newTimer​(MetricDescriptor descriptor,
                        String labelName)
        Create new Timer metric with 1 label.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        labelName - name of the (only) label of this metric
        Returns:
        an object from which a Timer can be obtained, given 1 label value

      • newTimer

        Labeled<Labeled<Timer>> newTimer​(MetricDescriptor descriptor,
                                 String firstLabelName,
                                 String secondLabelName)
        Create new Timer metric with 2 labels.
        Parameters:
        descriptor - a MetricDescriptor, typically created via MetricDescriptor.builder().anchor(this) .project("<projectName>").module("<moduleName>").id("<metricName>").build()
        firstLabelName - name of the 1st label of this metric
        secondLabelName - name of the 2nd label of this metric
        Returns:
        an object from which a Timer can be obtained, given 2 label values