2019-10-23 08:29:24 +02:00
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// Copyright 2019, OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package metric
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2019-10-29 22:27:22 +02:00
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import (
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"context"
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2019-11-01 20:40:29 +02:00
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"go.opentelemetry.io/otel/api/core"
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2019-10-29 22:27:22 +02:00
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)
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2019-12-24 09:03:04 +02:00
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// LabelSetDelegate is a general-purpose delegating implementation of
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// the LabelSet interface. This is implemented by the default
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// Provider returned by api/global.SetMeterProvider(), and should be
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// tested for by implementations before converting a LabelSet to their
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// private concrete type.
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type LabelSetDelegate interface {
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Delegate() LabelSet
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}
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2019-10-29 22:27:22 +02:00
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// InstrumentImpl is the implementation-level interface Set/Add/Record
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// individual metrics without precomputed labels.
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type InstrumentImpl interface {
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2019-12-28 02:30:19 +02:00
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// Bind creates a Bound Instrument to record metrics with
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// precomputed labels.
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Bind(labels LabelSet) BoundInstrumentImpl
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// RecordOne allows the SDK to observe a single metric event.
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RecordOne(ctx context.Context, number core.Number, labels LabelSet)
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}
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2019-12-28 02:30:19 +02:00
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// BoundInstrumentImpl is the implementation-level interface to Set/Add/Record
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2019-10-29 22:27:22 +02:00
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// individual metrics with precomputed labels.
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type BoundInstrumentImpl interface {
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// RecordOne allows the SDK to observe a single metric event.
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RecordOne(ctx context.Context, number core.Number)
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2019-12-28 02:30:19 +02:00
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// Unbind frees the resources associated with this bound instrument. It
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// does not affect the metric this bound instrument was created through.
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Unbind()
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}
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2019-10-23 08:29:24 +02:00
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// WrapInt64CounterInstrument wraps the instrument in the type-safe
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// wrapper as an integral counter.
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//
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// It is mostly intended for SDKs.
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2020-03-11 20:57:57 +02:00
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func WrapInt64CounterInstrument(instrument InstrumentImpl, err error) (Int64Counter, error) {
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common, err := newCommonMetric(instrument, err)
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return Int64Counter{commonMetric: common}, err
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2019-10-23 08:29:24 +02:00
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}
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// WrapFloat64CounterInstrument wraps the instrument in the type-safe
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// wrapper as an floating point counter.
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//
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// It is mostly intended for SDKs.
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func WrapFloat64CounterInstrument(instrument InstrumentImpl, err error) (Float64Counter, error) {
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common, err := newCommonMetric(instrument, err)
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return Float64Counter{commonMetric: common}, err
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2019-10-23 08:29:24 +02:00
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}
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// WrapInt64MeasureInstrument wraps the instrument in the type-safe
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// wrapper as an integral measure.
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//
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// It is mostly intended for SDKs.
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2020-03-11 20:57:57 +02:00
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func WrapInt64MeasureInstrument(instrument InstrumentImpl, err error) (Int64Measure, error) {
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common, err := newCommonMetric(instrument, err)
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return Int64Measure{commonMetric: common}, err
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2019-10-23 08:29:24 +02:00
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}
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// WrapFloat64MeasureInstrument wraps the instrument in the type-safe
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// wrapper as an floating point measure.
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//
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// It is mostly intended for SDKs.
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2020-03-11 20:57:57 +02:00
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func WrapFloat64MeasureInstrument(instrument InstrumentImpl, err error) (Float64Measure, error) {
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common, err := newCommonMetric(instrument, err)
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return Float64Measure{commonMetric: common}, err
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}
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// ApplyCounterOptions is a helper that applies all the counter
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// options to passed opts.
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func ApplyCounterOptions(opts *Options, cos ...CounterOptionApplier) {
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for _, o := range cos {
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o.ApplyCounterOption(opts)
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}
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}
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// ApplyMeasureOptions is a helper that applies all the measure
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// options to passed opts.
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func ApplyMeasureOptions(opts *Options, mos ...MeasureOptionApplier) {
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for _, o := range mos {
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o.ApplyMeasureOption(opts)
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}
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}
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2020-03-05 22:15:30 +02:00
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// ApplyObserverOptions is a helper that applies all the observer
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// options to passed opts.
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func ApplyObserverOptions(opts *Options, mos ...ObserverOptionApplier) {
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for _, o := range mos {
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o.ApplyObserverOption(opts)
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}
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}
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