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35 lines
1.2 KiB
Go
35 lines
1.2 KiB
Go
// Copyright 2018, OpenCensus 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 metricdata
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// LabelKey represents key of a label. It has optional
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// description attribute.
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type LabelKey struct {
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Key string
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Description string
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}
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// LabelValue represents the value of a label.
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// The zero value represents a missing label value, which may be treated
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// differently to an empty string value by some back ends.
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type LabelValue struct {
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Value string // string value of the label
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Present bool // flag that indicated whether a value is present or not
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}
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// NewLabelValue creates a new non-nil LabelValue that represents the given string.
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func NewLabelValue(val string) LabelValue {
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return LabelValue{Value: val, Present: true}
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}
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