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.
47 lines
1.1 KiB
47 lines
1.1 KiB
// Copyright 2019 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 remote |
|
|
|
import ( |
|
"sync" |
|
|
|
"github.com/prometheus/client_golang/prometheus" |
|
) |
|
|
|
type maxTimestamp struct { |
|
mtx sync.Mutex |
|
value float64 |
|
prometheus.Gauge |
|
} |
|
|
|
func (m *maxTimestamp) Set(value float64) { |
|
m.mtx.Lock() |
|
defer m.mtx.Unlock() |
|
if value > m.value { |
|
m.value = value |
|
m.Gauge.Set(value) |
|
} |
|
} |
|
|
|
func (m *maxTimestamp) Get() float64 { |
|
m.mtx.Lock() |
|
defer m.mtx.Unlock() |
|
return m.value |
|
} |
|
|
|
func (m *maxTimestamp) Collect(c chan<- prometheus.Metric) { |
|
if m.Get() > 0 { |
|
m.Gauge.Collect(c) |
|
} |
|
}
|
|
|