mirror of https://github.com/prometheus/prometheus
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
2.0 KiB
71 lines
2.0 KiB
// Copyright 2017 The Prometheus 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 storage |
|
|
|
import ( |
|
"github.com/prometheus/prometheus/util/annotations" |
|
) |
|
|
|
// lazyGenericSeriesSet is a wrapped series set that is initialised on first call to Next(). |
|
type lazyGenericSeriesSet struct { |
|
init func() (genericSeriesSet, bool) |
|
|
|
set genericSeriesSet |
|
} |
|
|
|
func (c *lazyGenericSeriesSet) Next() bool { |
|
if c.set != nil { |
|
return c.set.Next() |
|
} |
|
var ok bool |
|
c.set, ok = c.init() |
|
return ok |
|
} |
|
|
|
func (c *lazyGenericSeriesSet) Err() error { |
|
if c.set != nil { |
|
return c.set.Err() |
|
} |
|
return nil |
|
} |
|
|
|
func (c *lazyGenericSeriesSet) At() Labels { |
|
if c.set != nil { |
|
return c.set.At() |
|
} |
|
return nil |
|
} |
|
|
|
func (c *lazyGenericSeriesSet) Warnings() annotations.Annotations { |
|
if c.set != nil { |
|
return c.set.Warnings() |
|
} |
|
return nil |
|
} |
|
|
|
type warningsOnlySeriesSet annotations.Annotations |
|
|
|
func (warningsOnlySeriesSet) Next() bool { return false } |
|
func (warningsOnlySeriesSet) Err() error { return nil } |
|
func (warningsOnlySeriesSet) At() Labels { return nil } |
|
func (c warningsOnlySeriesSet) Warnings() annotations.Annotations { return annotations.Annotations(c) } |
|
|
|
type errorOnlySeriesSet struct { |
|
err error |
|
} |
|
|
|
func (errorOnlySeriesSet) Next() bool { return false } |
|
func (errorOnlySeriesSet) At() Labels { return nil } |
|
func (s errorOnlySeriesSet) Err() error { return s.err } |
|
func (errorOnlySeriesSet) Warnings() annotations.Annotations { return nil }
|
|
|