github.phpd.cn/cilium/cilium@v1.6.12/pkg/k8s/metrics/metrics.go (about)

     1  // Copyright 2019 Authors of Cilium
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package metrics
    16  
    17  import (
    18  	"time"
    19  
    20  	"github.com/cilium/cilium/pkg/lock"
    21  )
    22  
    23  var (
    24  	// LastInteraction is the time at which the last apiserver interaction
    25  	// occurred
    26  	LastInteraction eventTimestamper
    27  )
    28  
    29  type eventTimestamper struct {
    30  	timestamp time.Time
    31  	lock      lock.RWMutex
    32  }
    33  
    34  // Reset sets the timestamp to the current time
    35  func (e *eventTimestamper) Reset() {
    36  	e.lock.Lock()
    37  	e.timestamp = time.Now()
    38  	e.lock.Unlock()
    39  }
    40  
    41  // Time returns the timestamp as set per Reset()
    42  func (e *eventTimestamper) Time() time.Time {
    43  	e.lock.RLock()
    44  	t := e.timestamp
    45  	e.lock.RUnlock()
    46  	return t
    47  }