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https://github.com/open-telemetry/opentelemetry-go.git
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3362421c9b
This is to shrink the PR #100. The only place where the registry.Variable type was used was metrics, so just inline that type into its only user. The use of the registry.Variable type in core.Key was limited to the Name field. The stats package also used the registry.Variable type, but seems that also only the Name field was used and the package is going to be dropped anyway.
83 lines
1.8 KiB
Go
83 lines
1.8 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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"context"
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"go.opentelemetry.io/api/core"
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"go.opentelemetry.io/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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Gauge // Supports Set()
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Cumulative // Supports Inc()
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)
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type Meter interface {
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// TODO more Metric types
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GetFloat64Gauge(ctx context.Context, gauge *Float64GaugeHandle, labels ...core.KeyValue) Float64Gauge
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}
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type Float64Gauge interface {
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Set(ctx context.Context, value float64, labels ...core.KeyValue)
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}
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type Handle struct {
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Name string
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Description string
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Unit unit.Unit
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Type MetricType
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Keys []core.Key
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}
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type Option func(*Handle)
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// WithDescription applies provided description.
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func WithDescription(desc string) Option {
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return func(m *Handle) {
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m.Description = 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(m *Handle) {
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m.Unit = 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(m *Handle) {
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m.Keys = keys
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}
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}
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func (mtype MetricType) String() string {
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switch mtype {
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case Gauge:
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return "gauge"
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case Cumulative:
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return "cumulative"
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default:
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return "unknown"
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}
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}
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