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opentelemetry

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Implementation of stable OpenTelemetry signals

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opentelemetry src ot_meter.hrl
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src/ot_meter.hrl 

-record(meter, {module                  :: module(),

                instrumentation_library :: ot_tracer_server:instrumentation_library() | undefined,

                telemetry_library       :: ot_tracer_server:telemetry_library() | undefined,

                resource                :: ot_resource:t() | undefined}).

-type meter() :: #meter{}.



-record(instrument, {name         :: ot_meter:name(),

                     description  :: ot_meter:description(),

                     kind         :: ot_meter:instrument_kind(),

                     number_kind  :: ot_meter:number_kind(),

                     monotonic    :: boolean(),

                     synchronous  :: boolean(),

                     unit         :: ot_meter:unit()}).

-type instrument() :: #instrument{}.



-record(descriptor, {name :: ot_meter:name(),

                     kind :: ot_meter:instrument_kind(),

                     number_kind :: ot_meter:number_kind(),

                     config :: ot_meter:instrument_config()}).



-record(config, {%% Description describes the instrument in human-readable terms.

                 description :: ot_meter:description(),

                 %% Unit describes the measurement unit for a instrument.

                 unit :: ot_meter:unit()}).



-type aggregator() :: module().



-record(active_instrument, {key :: {ot_meter:name(), ot_meter:label_set()},

                            instrument :: ot_meter:instrument(),

                            aggregator :: aggregator(),

                            checkpoint :: number() | undefined,

                            current :: number() | {number(), integer()} | term()}).

-type active_instrument() :: #active_instrument{}.



-record(bound_instrument, {key :: {ot_meter:name(), ot_meter:label_set()},

                           number_kind :: ot_meter:number_kind(),

                           aggregator :: aggregator()}).

-type bound_instrument() :: #bound_instrument{} | unknown_instrument.



-record(observer, {name       :: ot_meter:name(),

                   instrument :: ot_observer:observer_instrument(),

                   callback   :: ot_observer:callback()}).