/
metrics.go
81 lines (70 loc) · 2.68 KB
/
metrics.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
// Copyright 2019 Preferred Networks, Inc.
//
// 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 metrics
import (
"github.com/pfnet-research/k8s-cluster-simulator/pkg/clock"
"github.com/pfnet-research/k8s-cluster-simulator/pkg/node"
"github.com/pfnet-research/k8s-cluster-simulator/pkg/pod"
"github.com/pfnet-research/k8s-cluster-simulator/pkg/queue"
"github.com/pfnet-research/k8s-cluster-simulator/pkg/util"
)
// Metrics represents a metrics at one time point, in the following structure.
// Metrics[ClockKey] = a formatted clock
// Metrics[NodesMetricsKey] = map from node name to node.Metrics
// Metrics[PodsMetricsKey] = map from pod name to pod.Metrics
// Metrics[QueueMetricsKey] = queue.Metrics
type Metrics map[string]interface{}
const (
// ClockKey is the key associated to a clock.Clock.
ClockKey = "Clock"
// NodesMetricsKey is the key associated to a map of node.Metrics.
NodesMetricsKey = "Nodes"
// PodsMetricsKey is the key associated to a map of pod.Metrics.
PodsMetricsKey = "Pods"
// QueueMetricsKey is the key associated to a queue.Metrics.
QueueMetricsKey = "Queue"
)
// BuildMetrics builds a Metrics at the given clock.
func BuildMetrics(clock clock.Clock, nodes map[string]*node.Node, queue queue.PodQueue) (Metrics, error) {
metrics := make(map[string]interface{})
metrics[ClockKey] = clock.ToRFC3339()
nodesMetrics := make(map[string]node.Metrics)
podsMetrics := make(map[string]pod.Metrics)
for name, node := range nodes {
nodesMetrics[name] = node.Metrics(clock)
for _, pod := range node.PodList() {
if !pod.IsTerminated(clock) {
key, err := util.PodKey(pod.ToV1())
if err != nil {
return Metrics{}, err
}
podsMetrics[key] = pod.Metrics(clock)
}
}
}
metrics[NodesMetricsKey] = nodesMetrics
metrics[PodsMetricsKey] = podsMetrics
metrics[QueueMetricsKey] = queue.Metrics()
return metrics, nil
}
// Formatter defines the interface of metrics formatter.
type Formatter interface {
// Format formats the given metrics to a string.
Format(metrics *Metrics) (string, error)
}
// Writer defines the interface of metrics writer.
type Writer interface {
// Write writes the given metrics to some location(s).
Write(metrics *Metrics) error
}