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Diffstat (limited to 'vendor/go.opentelemetry.io/otel/metric/asyncfloat64.go')
| -rw-r--r-- | vendor/go.opentelemetry.io/otel/metric/asyncfloat64.go | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/vendor/go.opentelemetry.io/otel/metric/asyncfloat64.go b/vendor/go.opentelemetry.io/otel/metric/asyncfloat64.go new file mode 100644 index 000000000..072baa8e8 --- /dev/null +++ b/vendor/go.opentelemetry.io/otel/metric/asyncfloat64.go @@ -0,0 +1,271 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package metric // import "go.opentelemetry.io/otel/metric" + +import ( + "context" + + "go.opentelemetry.io/otel/metric/embedded" +) + +// Float64Observable describes a set of instruments used asynchronously to +// record float64 measurements once per collection cycle. Observations of +// these instruments are only made within a callback. +// +// Warning: Methods may be added to this interface in minor releases. +type Float64Observable interface { + Observable + + float64Observable() +} + +// Float64ObservableCounter is an instrument used to asynchronously record +// increasing float64 measurements once per collection cycle. Observations are +// only made within a callback for this instrument. The value observed is +// assumed the to be the cumulative sum of the count. +// +// Warning: Methods may be added to this interface in minor releases. See +// package documentation on API implementation for information on how to set +// default behavior for +// unimplemented methods. +type Float64ObservableCounter interface { + // Users of the interface can ignore this. This embedded type is only used + // by implementations of this interface. See the "API Implementations" + // section of the package documentation for more information. + embedded.Float64ObservableCounter + + Float64Observable +} + +// Float64ObservableCounterConfig contains options for asynchronous counter +// instruments that record int64 values. +type Float64ObservableCounterConfig struct { + description string + unit string + callbacks []Float64Callback +} + +// NewFloat64ObservableCounterConfig returns a new +// [Float64ObservableCounterConfig] with all opts applied. +func NewFloat64ObservableCounterConfig(opts ...Float64ObservableCounterOption) Float64ObservableCounterConfig { + var config Float64ObservableCounterConfig + for _, o := range opts { + config = o.applyFloat64ObservableCounter(config) + } + return config +} + +// Description returns the configured description. +func (c Float64ObservableCounterConfig) Description() string { + return c.description +} + +// Unit returns the configured unit. +func (c Float64ObservableCounterConfig) Unit() string { + return c.unit +} + +// Callbacks returns the configured callbacks. +func (c Float64ObservableCounterConfig) Callbacks() []Float64Callback { + return c.callbacks +} + +// Float64ObservableCounterOption applies options to a +// [Float64ObservableCounterConfig]. See [Float64ObservableOption] and +// [InstrumentOption] for other options that can be used as a +// Float64ObservableCounterOption. +type Float64ObservableCounterOption interface { + applyFloat64ObservableCounter(Float64ObservableCounterConfig) Float64ObservableCounterConfig +} + +// Float64ObservableUpDownCounter is an instrument used to asynchronously +// record float64 measurements once per collection cycle. Observations are only +// made within a callback for this instrument. The value observed is assumed +// the to be the cumulative sum of the count. +// +// Warning: Methods may be added to this interface in minor releases. See +// package documentation on API implementation for information on how to set +// default behavior for unimplemented methods. +type Float64ObservableUpDownCounter interface { + // Users of the interface can ignore this. This embedded type is only used + // by implementations of this interface. See the "API Implementations" + // section of the package documentation for more information. + embedded.Float64ObservableUpDownCounter + + Float64Observable +} + +// Float64ObservableUpDownCounterConfig contains options for asynchronous +// counter instruments that record int64 values. +type Float64ObservableUpDownCounterConfig struct { + description string + unit string + callbacks []Float64Callback +} + +// NewFloat64ObservableUpDownCounterConfig returns a new +// [Float64ObservableUpDownCounterConfig] with all opts applied. +func NewFloat64ObservableUpDownCounterConfig(opts ...Float64ObservableUpDownCounterOption) Float64ObservableUpDownCounterConfig { + var config Float64ObservableUpDownCounterConfig + for _, o := range opts { + config = o.applyFloat64ObservableUpDownCounter(config) + } + return config +} + +// Description returns the configured description. +func (c Float64ObservableUpDownCounterConfig) Description() string { + return c.description +} + +// Unit returns the configured unit. +func (c Float64ObservableUpDownCounterConfig) Unit() string { + return c.unit +} + +// Callbacks returns the configured callbacks. +func (c Float64ObservableUpDownCounterConfig) Callbacks() []Float64Callback { + return c.callbacks +} + +// Float64ObservableUpDownCounterOption applies options to a +// [Float64ObservableUpDownCounterConfig]. See [Float64ObservableOption] and +// [InstrumentOption] for other options that can be used as a +// Float64ObservableUpDownCounterOption. +type Float64ObservableUpDownCounterOption interface { + applyFloat64ObservableUpDownCounter(Float64ObservableUpDownCounterConfig) Float64ObservableUpDownCounterConfig +} + +// Float64ObservableGauge is an instrument used to asynchronously record +// instantaneous float64 measurements once per collection cycle. Observations +// are only made within a callback for this instrument. +// +// Warning: Methods may be added to this interface in minor releases. See +// package documentation on API implementation for information on how to set +// default behavior for unimplemented methods. +type Float64ObservableGauge interface { + // Users of the interface can ignore this. This embedded type is only used + // by implementations of this interface. See the "API Implementations" + // section of the package documentation for more information. + embedded.Float64ObservableGauge + + Float64Observable +} + +// Float64ObservableGaugeConfig contains options for asynchronous counter +// instruments that record int64 values. +type Float64ObservableGaugeConfig struct { + description string + unit string + callbacks []Float64Callback +} + +// NewFloat64ObservableGaugeConfig returns a new [Float64ObservableGaugeConfig] +// with all opts applied. +func NewFloat64ObservableGaugeConfig(opts ...Float64ObservableGaugeOption) Float64ObservableGaugeConfig { + var config Float64ObservableGaugeConfig + for _, o := range opts { + config = o.applyFloat64ObservableGauge(config) + } + return config +} + +// Description returns the configured description. +func (c Float64ObservableGaugeConfig) Description() string { + return c.description +} + +// Unit returns the configured unit. +func (c Float64ObservableGaugeConfig) Unit() string { + return c.unit +} + +// Callbacks returns the configured callbacks. +func (c Float64ObservableGaugeConfig) Callbacks() []Float64Callback { + return c.callbacks +} + +// Float64ObservableGaugeOption applies options to a +// [Float64ObservableGaugeConfig]. See [Float64ObservableOption] and +// [InstrumentOption] for other options that can be used as a +// Float64ObservableGaugeOption. +type Float64ObservableGaugeOption interface { + applyFloat64ObservableGauge(Float64ObservableGaugeConfig) Float64ObservableGaugeConfig +} + +// Float64Observer is a recorder of float64 measurements. +// +// Warning: Methods may be added to this interface in minor releases. See +// package documentation on API implementation for information on how to set +// default behavior for unimplemented methods. +type Float64Observer interface { + // Users of the interface can ignore this. This embedded type is only used + // by implementations of this interface. See the "API Implementations" + // section of the package documentation for more information. + embedded.Float64Observer + + // Observe records the float64 value. + // + // Use the WithAttributeSet (or, if performance is not a concern, + // the WithAttributes) option to include measurement attributes. + Observe(value float64, options ...ObserveOption) +} + +// Float64Callback is a function registered with a Meter that makes +// observations for a Float64Observerable instrument it is registered with. +// Calls to the Float64Observer record measurement values for the +// Float64Observable. +// +// The function needs to complete in a finite amount of time and the deadline +// of the passed context is expected to be honored. +// +// The function needs to make unique observations across all registered +// Float64Callbacks. Meaning, it should not report measurements with the same +// attributes as another Float64Callbacks also registered for the same +// instrument. +// +// The function needs to be concurrent safe. +type Float64Callback func(context.Context, Float64Observer) error + +// Float64ObservableOption applies options to float64 Observer instruments. +type Float64ObservableOption interface { + Float64ObservableCounterOption + Float64ObservableUpDownCounterOption + Float64ObservableGaugeOption +} + +type float64CallbackOpt struct { + cback Float64Callback +} + +func (o float64CallbackOpt) applyFloat64ObservableCounter(cfg Float64ObservableCounterConfig) Float64ObservableCounterConfig { + cfg.callbacks = append(cfg.callbacks, o.cback) + return cfg +} + +func (o float64CallbackOpt) applyFloat64ObservableUpDownCounter(cfg Float64ObservableUpDownCounterConfig) Float64ObservableUpDownCounterConfig { + cfg.callbacks = append(cfg.callbacks, o.cback) + return cfg +} + +func (o float64CallbackOpt) applyFloat64ObservableGauge(cfg Float64ObservableGaugeConfig) Float64ObservableGaugeConfig { + cfg.callbacks = append(cfg.callbacks, o.cback) + return cfg +} + +// WithFloat64Callback adds callback to be called for an instrument. +func WithFloat64Callback(callback Float64Callback) Float64ObservableOption { + return float64CallbackOpt{callback} +} |