代码拉取完成,页面将自动刷新
/*
Copyright 2015 The Kubernetes Authors All rights reserved.
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 initialresources
import (
"fmt"
"strings"
"time"
"github.com/golang/glog"
influxdb "github.com/influxdb/influxdb/client"
"k8s.io/kubernetes/pkg/api"
)
const (
cpuSeriesName = "autoscaling.cpu.usage.2m"
memSeriesName = "autoscaling.memory.usage.2m"
cpuContinuousQuery = "select derivative(value) as value from \"cpu/usage_ns_cumulative\" where pod_id <> '' group by pod_id, pod_namespace, container_name, container_base_image, time(2m) into " + cpuSeriesName
memContinuousQuery = "select mean(value) as value from \"memory/usage_bytes_gauge\" where pod_id <> '' group by pod_id, pod_namespace, container_name, container_base_image, time(2m) into " + memSeriesName
timeFormat = "2006-01-02 15:04:05"
)
// TODO(piosz): rewrite this once we will migrate into InfluxDB v0.9.
type influxdbSource struct {
conf *influxdb.ClientConfig
}
func newInfluxdbSource(host, user, password, db string) (dataSource, error) {
conf := &influxdb.ClientConfig{
Host: host,
Username: user,
Password: password,
Database: db,
}
source := &influxdbSource{
conf: conf,
}
go source.ensureAutoscalingSeriesExist()
return source, nil
}
func ensureSeriesExists(conn *influxdb.Client, existingQueries *influxdb.Series, seriesName, contQuery string) error {
queryExists := false
for _, p := range existingQueries.GetPoints() {
id := p[1].(float64)
query := p[2].(string)
if strings.Contains(query, "into "+seriesName) {
if query != contQuery {
if _, err := conn.Query(fmt.Sprintf("drop continuous query %v", id), influxdb.Second); err != nil {
return err
}
} else {
queryExists = true
}
}
}
if !queryExists {
if _, err := conn.Query("drop series "+seriesName, influxdb.Second); err != nil {
return err
}
if _, err := conn.Query(contQuery, influxdb.Second); err != nil {
return err
}
}
return nil
}
func (s *influxdbSource) ensureAutoscalingSeriesExist() {
for {
time.Sleep(30 * time.Second)
client, err := influxdb.NewClient(s.conf)
if err != nil {
glog.Errorf("Error while trying to create InfluxDB client: %v", err)
continue
}
series, err := client.Query("list continuous queries", influxdb.Second)
if err != nil {
glog.Errorf("Error while trying to list continuous queries: %v", err)
continue
}
if err := ensureSeriesExists(client, series[0], cpuSeriesName, cpuContinuousQuery); err != nil {
glog.Errorf("Error while trying to create create autoscaling series: %v", err)
continue
}
if err := ensureSeriesExists(client, series[0], memSeriesName, memContinuousQuery); err != nil {
glog.Errorf("Error while trying to create create autoscaling series: %v", err)
continue
}
break
}
}
func (s *influxdbSource) query(query string, precision ...influxdb.TimePrecision) ([]*influxdb.Series, error) {
client, err := influxdb.NewClient(s.conf)
if err != nil {
return nil, err
}
return client.Query(query, precision...)
}
func (s *influxdbSource) GetUsagePercentile(kind api.ResourceName, perc int64, image, namespace string, exactMatch bool, start, end time.Time) (int64, int64, error) {
var series string
if kind == api.ResourceCPU {
series = cpuSeriesName
} else if kind == api.ResourceMemory {
series = memSeriesName
}
var imgPattern string
if exactMatch {
imgPattern = "='" + image + "'"
} else {
// Escape character "/" in image pattern.
imgPattern = "=~/^" + strings.Replace(image, "/", "\\/", -1) + "/"
}
var namespaceCond string
if namespace != "" {
namespaceCond = " and pod_namespace='" + namespace + "'"
}
query := fmt.Sprintf("select percentile(value, %v), count(pod_id) from %v where container_base_image%v%v and time > '%v' and time < '%v'", perc, series, imgPattern, namespaceCond, start.UTC().Format(timeFormat), end.UTC().Format(timeFormat))
var res []*influxdb.Series
var err error
if res, err = s.query(query, influxdb.Second); err != nil {
return 0, 0, fmt.Errorf("Error while trying to query InfluxDB: %v", err)
}
// TODO(pszczesniak): fix issue with dropped data base
if len(res) == 0 {
return 0, 0, fmt.Errorf("Missing data in series %v in InfluxDB", series)
}
points := res[0].GetPoints()
if len(points) == 0 {
return 0, 0, fmt.Errorf("Missing data in series %v in InfluxDB", series)
}
p := points[0]
usage := p[1].(float64)
count := p[2].(float64)
if kind == api.ResourceCPU {
// convert from ns to millicores
usage = usage / 1000000
}
return int64(usage), int64(count), nil
}
此处可能存在不合适展示的内容,页面不予展示。您可通过相关编辑功能自查并修改。
如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容,可点击提交进行申诉,我们将尽快为您处理。