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https://github.com/open-telemetry/opentelemetry-go.git
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71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
// 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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import (
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"github.com/open-telemetry/opentelemetry-go/api/core"
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"github.com/open-telemetry/opentelemetry-go/api/tag"
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"github.com/open-telemetry/opentelemetry-go/api/unit"
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)
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type MetricType int
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const (
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Invalid MetricType = iota
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GaugeInt64
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GaugeFloat64
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DerivedGaugeInt64
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DerivedGaugeFloat64
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CumulativeInt64
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CumulativeFloat64
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DerivedCumulativeInt64
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DerivedCumulativeFloat64
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)
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type Metric interface {
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Measure() core.Measure
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DefinitionID() core.EventID
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Type() MetricType
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Fields() []core.Key
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Err() error
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base() *baseMetric
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}
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type Option func(*baseMetric, *[]tag.Option)
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// WithDescription applies provided description.
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func WithDescription(desc string) Option {
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return func(_ *baseMetric, to *[]tag.Option) {
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*to = append(*to, tag.WithDescription(desc))
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}
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}
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// WithUnit applies provided unit.
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func WithUnit(unit unit.Unit) Option {
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return func(_ *baseMetric, to *[]tag.Option) {
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*to = append(*to, tag.WithUnit(unit))
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}
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}
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// WithKeys applies the provided dimension keys.
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func WithKeys(keys ...core.Key) Option {
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return func(bm *baseMetric, _ *[]tag.Option) {
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bm.keys = keys
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}
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}
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