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options.go
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options.go
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// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package models
import (
"bytes"
"errors"
"github.com/prometheus/common/model"
)
var (
defaultMetricName = []byte(model.MetricNameLabel)
defaultBucketName = []byte("le")
errNoName = errors.New("metric name is missing or empty")
errNoBucket = errors.New("bucket name is missing or empty")
)
type tagOptions struct {
version int
idScheme IDSchemeType
bucketName []byte
metricName []byte
}
// NewTagOptions builds a new tag options with default values.
func NewTagOptions() TagOptions {
return &tagOptions{
version: 0,
metricName: defaultMetricName,
bucketName: defaultBucketName,
idScheme: TypeLegacy,
}
}
func (o *tagOptions) Validate() error {
if o.metricName == nil || len(o.metricName) == 0 {
return errNoName
}
if o.bucketName == nil || len(o.bucketName) == 0 {
return errNoBucket
}
return o.idScheme.Validate()
}
func (o *tagOptions) SetMetricName(metricName []byte) TagOptions {
opts := *o
opts.metricName = metricName
return &opts
}
func (o *tagOptions) MetricName() []byte {
return o.metricName
}
func (o *tagOptions) SetBucketName(bucketName []byte) TagOptions {
opts := *o
opts.bucketName = bucketName
return &opts
}
func (o *tagOptions) BucketName() []byte {
return o.bucketName
}
func (o *tagOptions) SetIDSchemeType(scheme IDSchemeType) TagOptions {
opts := *o
opts.idScheme = scheme
return &opts
}
func (o *tagOptions) IDSchemeType() IDSchemeType {
return o.idScheme
}
func (o *tagOptions) Equals(other TagOptions) bool {
return o.idScheme == other.IDSchemeType() &&
bytes.Equal(o.metricName, other.MetricName()) &&
bytes.Equal(o.bucketName, other.BucketName())
}