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469 lines
19 KiB
ReStructuredText
469 lines
19 KiB
ReStructuredText
:tocdepth: 3
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base/frameworks/telemetry/main.zeek
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===================================
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.. zeek:namespace:: Telemetry
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Module for recording and querying metrics. This modules wraps
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the lower-level telemetry.bif functions.
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Metrics will be exposed through a Prometheus HTTP endpoint when
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enabled by setting :zeek:see:`Telemetry::metrics_port`.
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:Namespace: Telemetry
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:Imports: :doc:`base/bif/telemetry_functions.bif.zeek </scripts/base/bif/telemetry_functions.bif.zeek>`, :doc:`base/misc/version.zeek </scripts/base/misc/version.zeek>`
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Summary
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~~~~~~~
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Types
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#####
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============================================================ =========================================================================
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:zeek:type:`Telemetry::Counter`: :zeek:type:`record` Type representing a counter metric with initialized label values.
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:zeek:type:`Telemetry::CounterFamily`: :zeek:type:`record` Type representing a family of counters with uninitialized label values.
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:zeek:type:`Telemetry::Gauge`: :zeek:type:`record` Type representing a gauge metric with initialized label values.
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:zeek:type:`Telemetry::GaugeFamily`: :zeek:type:`record` Type representing a family of gauges with uninitialized label values.
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:zeek:type:`Telemetry::Histogram`: :zeek:type:`record` Type representing a histogram metric with initialized label values.
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:zeek:type:`Telemetry::HistogramFamily`: :zeek:type:`record` Type representing a family of histograms with uninitialized label values.
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:zeek:type:`Telemetry::labels_vector`: :zeek:type:`vector` Alias for a vector of label values.
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============================================================ =========================================================================
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Functions
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#########
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====================================================================== ============================================================================================
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:zeek:id:`Telemetry::collect_histogram_metrics`: :zeek:type:`function` Collect all histograms and their observations matching the given
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*prefix* and *name*.
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:zeek:id:`Telemetry::collect_metrics`: :zeek:type:`function` Collect all counter and gauge metrics matching the given *name* and *prefix*.
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:zeek:id:`Telemetry::counter_family_inc`: :zeek:type:`function` Increment a :zeek:see:`Telemetry::Counter` through the :zeek:see:`Telemetry::CounterFamily`.
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:zeek:id:`Telemetry::counter_family_set`: :zeek:type:`function` Set a :zeek:see:`Telemetry::Counter` through the :zeek:see:`Telemetry::CounterFamily`.
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:zeek:id:`Telemetry::counter_inc`: :zeek:type:`function` Increment a :zeek:see:`Telemetry::Counter` by ``amount``.
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:zeek:id:`Telemetry::counter_set`: :zeek:type:`function` Helper to set a :zeek:see:`Telemetry::Counter` to the given ``value``.
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:zeek:id:`Telemetry::counter_with`: :zeek:type:`function` Get a :zeek:see:`Telemetry::Counter` instance given family and label values.
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:zeek:id:`Telemetry::gauge_dec`: :zeek:type:`function` Decrement a :zeek:see:`Telemetry::Gauge` by ``amount``.
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:zeek:id:`Telemetry::gauge_family_dec`: :zeek:type:`function` Decrement a :zeek:see:`Telemetry::Gauge` by the given ``amount`` through
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the :zeek:see:`Telemetry::GaugeFamily`.
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:zeek:id:`Telemetry::gauge_family_inc`: :zeek:type:`function` Increment a :zeek:see:`Telemetry::Gauge` by the given ``amount`` through
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the :zeek:see:`Telemetry::GaugeFamily`.
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:zeek:id:`Telemetry::gauge_family_set`: :zeek:type:`function` Set a :zeek:see:`Telemetry::Gauge` to the given ``value`` through
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the :zeek:see:`Telemetry::GaugeFamily`.
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:zeek:id:`Telemetry::gauge_inc`: :zeek:type:`function` Increment a :zeek:see:`Telemetry::Gauge` by ``amount``.
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:zeek:id:`Telemetry::gauge_set`: :zeek:type:`function` Helper to set a :zeek:see:`Telemetry::Gauge` to the given ``value``.
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:zeek:id:`Telemetry::gauge_with`: :zeek:type:`function` Get a :zeek:see:`Telemetry::Gauge` instance given family and label values.
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:zeek:id:`Telemetry::histogram_family_observe`: :zeek:type:`function` Observe a measurement for a :zeek:see:`Telemetry::Histogram` through
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the :zeek:see:`Telemetry::HistogramFamily`.
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:zeek:id:`Telemetry::histogram_observe`: :zeek:type:`function` Observe a measurement for a :zeek:see:`Telemetry::Histogram`.
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:zeek:id:`Telemetry::histogram_with`: :zeek:type:`function` Get a :zeek:see:`Telemetry::Histogram` instance given family and label values.
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:zeek:id:`Telemetry::register_counter_family`: :zeek:type:`function` Register a counter family.
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:zeek:id:`Telemetry::register_gauge_family`: :zeek:type:`function` Register a gauge family.
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:zeek:id:`Telemetry::register_histogram_family`: :zeek:type:`function` Register a histogram family.
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====================================================================== ============================================================================================
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Detailed Interface
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~~~~~~~~~~~~~~~~~~
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Types
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#####
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.. zeek:type:: Telemetry::Counter
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:source-code: base/frameworks/telemetry/main.zeek 34 36
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:Type: :zeek:type:`record`
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.. zeek:field:: __metric :zeek:type:`opaque` of counter_metric
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Type representing a counter metric with initialized label values.
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Counter metrics only ever go up and reset when the process
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restarts. Use :zeek:see:`Telemetry::counter_inc` or
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:zeek:see:`Telemetry::counter_set` to modify counters.
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An example for a counter is the number of log writes
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per :zeek:see:`Log::Stream` or number connections broken down
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by protocol and service.
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.. zeek:type:: Telemetry::CounterFamily
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:source-code: base/frameworks/telemetry/main.zeek 21 24
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:Type: :zeek:type:`record`
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.. zeek:field:: __family :zeek:type:`opaque` of counter_metric_family
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.. zeek:field:: __labels :zeek:type:`vector` of :zeek:type:`string`
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Type representing a family of counters with uninitialized label values.
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To create concrete :zeek:see:`Telemetry::Counter` instances, use
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:zeek:see:`Telemetry::counter_with`. To modify counters directly
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use :zeek:see:`Telemetry::counter_family_inc`.
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.. zeek:type:: Telemetry::Gauge
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:source-code: base/frameworks/telemetry/main.zeek 117 119
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:Type: :zeek:type:`record`
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.. zeek:field:: __metric :zeek:type:`opaque` of gauge_metric
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Type representing a gauge metric with initialized label values.
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Use :zeek:see:`Telemetry::gauge_inc`, :zeek:see:`Telemetry::gauge_dec`,
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or :zeek:see:`Telemetry::gauge_set` to modify the gauge.
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Example for gauges are process memory usage, table sizes
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or footprints of long-lived values as determined by
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:zeek:see:`val_footprint`.
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.. zeek:type:: Telemetry::GaugeFamily
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:source-code: base/frameworks/telemetry/main.zeek 105 108
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:Type: :zeek:type:`record`
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.. zeek:field:: __family :zeek:type:`opaque` of gauge_metric_family
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.. zeek:field:: __labels :zeek:type:`vector` of :zeek:type:`string`
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Type representing a family of gauges with uninitialized label values.
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Create concrete :zeek:see:`Telemetry::Gauge` instances with
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:zeek:see:`Telemetry::gauge_with`, or use
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:zeek:see:`Telemetry::gauge_family_inc` or
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:zeek:see:`Telemetry::gauge_family_set` directly.
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.. zeek:type:: Telemetry::Histogram
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:source-code: base/frameworks/telemetry/main.zeek 213 215
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:Type: :zeek:type:`record`
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.. zeek:field:: __metric :zeek:type:`opaque` of histogram_metric
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Type representing a histogram metric with initialized label values.
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Use :zeek:see:`Telemetry::histogram_observe` to make observations.
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.. zeek:type:: Telemetry::HistogramFamily
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:source-code: base/frameworks/telemetry/main.zeek 206 209
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:Type: :zeek:type:`record`
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.. zeek:field:: __family :zeek:type:`opaque` of histogram_metric_family
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.. zeek:field:: __labels :zeek:type:`vector` of :zeek:type:`string`
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Type representing a family of histograms with uninitialized label values.
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Create concrete :zeek:see:`Telemetry::Histogram` instances with
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:zeek:see:`Telemetry::histogram_with` or use
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:zeek:see:`Telemetry::histogram_family_observe` directly.
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.. zeek:type:: Telemetry::labels_vector
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:source-code: base/frameworks/telemetry/main.zeek 14 14
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:Type: :zeek:type:`vector` of :zeek:type:`string`
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Alias for a vector of label values.
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Functions
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#########
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.. zeek:id:: Telemetry::collect_histogram_metrics
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:source-code: base/frameworks/telemetry/main.zeek 453 456
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:Type: :zeek:type:`function` (prefix: :zeek:type:`string` :zeek:attr:`&default` = ``"*"`` :zeek:attr:`&optional`, name: :zeek:type:`string` :zeek:attr:`&default` = ``"*"`` :zeek:attr:`&optional`) : :zeek:type:`vector` of :zeek:type:`Telemetry::HistogramMetric`
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Collect all histograms and their observations matching the given
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*prefix* and *name*.
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The *prefix* and *name* parameters support globbing. By default,
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all histogram metrics are returned.
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.. zeek:id:: Telemetry::collect_metrics
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:source-code: base/frameworks/telemetry/main.zeek 448 451
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:Type: :zeek:type:`function` (prefix: :zeek:type:`string` :zeek:attr:`&default` = ``"*"`` :zeek:attr:`&optional`, name: :zeek:type:`string` :zeek:attr:`&default` = ``"*"`` :zeek:attr:`&optional`) : :zeek:type:`vector` of :zeek:type:`Telemetry::Metric`
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Collect all counter and gauge metrics matching the given *name* and *prefix*.
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For histogram metrics, use the :zeek:see:`Telemetry::collect_histogram_metrics`.
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The *prefix* and *name* parameters support globbing. By default,
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all counters and gauges are returned.
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.. zeek:id:: Telemetry::counter_family_inc
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:source-code: base/frameworks/telemetry/main.zeek 325 328
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:Type: :zeek:type:`function` (cf: :zeek:type:`Telemetry::CounterFamily`, label_values: :zeek:type:`Telemetry::labels_vector` :zeek:attr:`&default` = ``[]`` :zeek:attr:`&optional`, amount: :zeek:type:`double` :zeek:attr:`&default` = ``1.0`` :zeek:attr:`&optional`) : :zeek:type:`bool`
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Increment a :zeek:see:`Telemetry::Counter` through the :zeek:see:`Telemetry::CounterFamily`.
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This is a short-cut for :zeek:see:`Telemetry::counter_inc`.
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Using a negative amount is an error.
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:param cf: The counter family to use.
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:param label_values: The label values to use for the counter.
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:param amount: The amount by which to increment the counter.
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:returns: True if the counter was incremented successfully.
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.. zeek:id:: Telemetry::counter_family_set
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:source-code: base/frameworks/telemetry/main.zeek 330 333
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:Type: :zeek:type:`function` (cf: :zeek:type:`Telemetry::CounterFamily`, label_values: :zeek:type:`Telemetry::labels_vector`, value: :zeek:type:`double`) : :zeek:type:`bool`
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Set a :zeek:see:`Telemetry::Counter` through the :zeek:see:`Telemetry::CounterFamily`.
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This is a short-cut for :zeek:see:`Telemetry::counter_set`.
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Setting a value that is less than the current value of the
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metric is an error and will be ignored.
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:param cf: The counter family to use.
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:param label_values: The label values to use for the counter.
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:param value: The value to set the counter to.
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:returns: True if the counter value was set successfully.
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.. zeek:id:: Telemetry::counter_inc
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:source-code: base/frameworks/telemetry/main.zeek 309 312
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:Type: :zeek:type:`function` (c: :zeek:type:`Telemetry::Counter`, amount: :zeek:type:`double` :zeek:attr:`&default` = ``1.0`` :zeek:attr:`&optional`) : :zeek:type:`bool`
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Increment a :zeek:see:`Telemetry::Counter` by ``amount``.
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Using a negative ``amount`` is an error.
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:param c: The counter instance.
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:param amount: The amount by which to increment the counter.
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:returns: True if the counter was incremented successfully.
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.. zeek:id:: Telemetry::counter_set
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:source-code: base/frameworks/telemetry/main.zeek 314 323
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:Type: :zeek:type:`function` (c: :zeek:type:`Telemetry::Counter`, value: :zeek:type:`double`) : :zeek:type:`bool`
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Helper to set a :zeek:see:`Telemetry::Counter` to the given ``value``.
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This can be useful for mirroring counter metrics in an
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:zeek:see:`Telemetry::sync` hook implementation.
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Setting a value that is less than the current value of the
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metric is an error and will be ignored.
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:param c: The counter instance.
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:param value: The value to set the counter to.
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:returns: True if the counter value was set successfully.
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.. zeek:id:: Telemetry::counter_with
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:source-code: base/frameworks/telemetry/main.zeek 296 307
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:Type: :zeek:type:`function` (cf: :zeek:type:`Telemetry::CounterFamily`, label_values: :zeek:type:`Telemetry::labels_vector` :zeek:attr:`&default` = ``[]`` :zeek:attr:`&optional`) : :zeek:type:`Telemetry::Counter`
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Get a :zeek:see:`Telemetry::Counter` instance given family and label values.
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.. zeek:id:: Telemetry::gauge_dec
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:source-code: base/frameworks/telemetry/main.zeek 372 375
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:Type: :zeek:type:`function` (g: :zeek:type:`Telemetry::Gauge`, amount: :zeek:type:`double` :zeek:attr:`&default` = ``1.0`` :zeek:attr:`&optional`) : :zeek:type:`bool`
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Decrement a :zeek:see:`Telemetry::Gauge` by ``amount``.
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:param g: The gauge instance.
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:param amount: The amount by which to decrement the gauge.
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:returns: True if the gauge was incremented successfully.
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.. zeek:id:: Telemetry::gauge_family_dec
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:source-code: base/frameworks/telemetry/main.zeek 393 396
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:Type: :zeek:type:`function` (gf: :zeek:type:`Telemetry::GaugeFamily`, label_values: :zeek:type:`Telemetry::labels_vector` :zeek:attr:`&default` = ``[]`` :zeek:attr:`&optional`, value: :zeek:type:`double` :zeek:attr:`&default` = ``1.0`` :zeek:attr:`&optional`) : :zeek:type:`bool`
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Decrement a :zeek:see:`Telemetry::Gauge` by the given ``amount`` through
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the :zeek:see:`Telemetry::GaugeFamily`.
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This is a short-cut for :zeek:see:`Telemetry::gauge_dec`.
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:param gf: The gauge family to use.
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:param label_values: The label values to use for the gauge.
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:param amount: The amount by which to increment the gauge.
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:returns: True if the gauge was incremented successfully.
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.. zeek:id:: Telemetry::gauge_family_inc
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:source-code: base/frameworks/telemetry/main.zeek 388 391
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:Type: :zeek:type:`function` (gf: :zeek:type:`Telemetry::GaugeFamily`, label_values: :zeek:type:`Telemetry::labels_vector` :zeek:attr:`&default` = ``[]`` :zeek:attr:`&optional`, value: :zeek:type:`double` :zeek:attr:`&default` = ``1.0`` :zeek:attr:`&optional`) : :zeek:type:`bool`
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Increment a :zeek:see:`Telemetry::Gauge` by the given ``amount`` through
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the :zeek:see:`Telemetry::GaugeFamily`.
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This is a short-cut for :zeek:see:`Telemetry::gauge_inc`.
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Using a negative amount is an error.
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:param gf: The gauge family to use.
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:param label_values: The label values to use for the gauge.
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:param amount: The amount by which to increment the gauge.
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:returns: True if the gauge was incremented successfully.
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.. zeek:id:: Telemetry::gauge_family_set
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:source-code: base/frameworks/telemetry/main.zeek 398 401
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:Type: :zeek:type:`function` (gf: :zeek:type:`Telemetry::GaugeFamily`, label_values: :zeek:type:`Telemetry::labels_vector`, value: :zeek:type:`double`) : :zeek:type:`bool`
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Set a :zeek:see:`Telemetry::Gauge` to the given ``value`` through
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the :zeek:see:`Telemetry::GaugeFamily`.
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This is a short-cut for :zeek:see:`Telemetry::gauge_set`.
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:param gf: The gauge family to use.
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:param label_values: The label values to use for the gauge.
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:param value: The value to set the gauge to.
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:returns: True if the gauge value was set successfully.
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.. zeek:id:: Telemetry::gauge_inc
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:source-code: base/frameworks/telemetry/main.zeek 367 370
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:Type: :zeek:type:`function` (g: :zeek:type:`Telemetry::Gauge`, amount: :zeek:type:`double` :zeek:attr:`&default` = ``1.0`` :zeek:attr:`&optional`) : :zeek:type:`bool`
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Increment a :zeek:see:`Telemetry::Gauge` by ``amount``.
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:param g: The gauge instance.
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:param amount: The amount by which to increment the gauge.
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:returns: True if the gauge was incremented successfully.
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.. zeek:id:: Telemetry::gauge_set
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:source-code: base/frameworks/telemetry/main.zeek 377 386
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:Type: :zeek:type:`function` (g: :zeek:type:`Telemetry::Gauge`, value: :zeek:type:`double`) : :zeek:type:`bool`
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Helper to set a :zeek:see:`Telemetry::Gauge` to the given ``value``.
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:param g: The gauge instance.
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:param value: The value to set the gauge to.
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:returns: True if the gauge value was set successfully.
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.. zeek:id:: Telemetry::gauge_with
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:source-code: base/frameworks/telemetry/main.zeek 355 365
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:Type: :zeek:type:`function` (gf: :zeek:type:`Telemetry::GaugeFamily`, label_values: :zeek:type:`Telemetry::labels_vector` :zeek:attr:`&default` = ``[]`` :zeek:attr:`&optional`) : :zeek:type:`Telemetry::Gauge`
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Get a :zeek:see:`Telemetry::Gauge` instance given family and label values.
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.. zeek:id:: Telemetry::histogram_family_observe
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:source-code: base/frameworks/telemetry/main.zeek 443 446
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:Type: :zeek:type:`function` (hf: :zeek:type:`Telemetry::HistogramFamily`, label_values: :zeek:type:`Telemetry::labels_vector`, measurement: :zeek:type:`double`) : :zeek:type:`bool`
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Observe a measurement for a :zeek:see:`Telemetry::Histogram` through
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the :zeek:see:`Telemetry::HistogramFamily`.
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This is a short-cut for :zeek:see:`Telemetry::histogram_observe`.
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:param hf: The histogram family to use.
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:param label_values: The label values to use for the histogram.
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:param measurement: The value for this observations.
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:returns: True if measurement was observed successfully.
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.. zeek:id:: Telemetry::histogram_observe
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:source-code: base/frameworks/telemetry/main.zeek 438 441
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:Type: :zeek:type:`function` (h: :zeek:type:`Telemetry::Histogram`, measurement: :zeek:type:`double`) : :zeek:type:`bool`
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Observe a measurement for a :zeek:see:`Telemetry::Histogram`.
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:param h: The histogram instance.
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:param measurement: The value for this observations.
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:returns: True if measurement was observed successfully.
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.. zeek:id:: Telemetry::histogram_with
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:source-code: base/frameworks/telemetry/main.zeek 425 436
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:Type: :zeek:type:`function` (hf: :zeek:type:`Telemetry::HistogramFamily`, label_values: :zeek:type:`Telemetry::labels_vector` :zeek:attr:`&default` = ``[]`` :zeek:attr:`&optional`) : :zeek:type:`Telemetry::Histogram`
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Get a :zeek:see:`Telemetry::Histogram` instance given family and label values.
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.. zeek:id:: Telemetry::register_counter_family
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:source-code: base/frameworks/telemetry/main.zeek 276 286
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:Type: :zeek:type:`function` (opts: :zeek:type:`Telemetry::MetricOpts`) : :zeek:type:`Telemetry::CounterFamily`
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Register a counter family.
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.. zeek:id:: Telemetry::register_gauge_family
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:source-code: base/frameworks/telemetry/main.zeek 335 345
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:Type: :zeek:type:`function` (opts: :zeek:type:`Telemetry::MetricOpts`) : :zeek:type:`Telemetry::GaugeFamily`
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Register a gauge family.
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.. zeek:id:: Telemetry::register_histogram_family
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:source-code: base/frameworks/telemetry/main.zeek 403 414
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:Type: :zeek:type:`function` (opts: :zeek:type:`Telemetry::MetricOpts`) : :zeek:type:`Telemetry::HistogramFamily`
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Register a histogram family.
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