custom-kube-scheduler/kubernetes-v1.15.4/pkg/scheduler/algorithm/priorities/infrastructure.go

package priorities

import (
	"os"

	client "github.com/influxdata/influxdb1-client/v2"
	"gopkg.in/yaml.v2"
	"k8s.io/klog"
)

type scorerInput struct {
	metricName string
	metrics    map[string]float64
}

type Config struct {
	Server struct {
		Port string `yaml:"port"`
		Host string `yaml:"host"`
	} `yaml:"server"`
	Database struct {
		Type     string `yaml:"type"`
		Name     string `yaml:"name"`
		Username string `yaml:"username"`
		Password string `yaml:"password"`
	} `yaml:"database"`
	MonitoringSpecs struct {
		TimeInterval float32 `yaml:"interval"`
	} `yaml:"monitoring"`
}

var nodes = map[string]string{
	"kube-01": "e77467ad-636e-4e7e-8bc9-53e46ae51da1",
	"kube-02": "e77467ad-636e-4e7e-8bc9-53e46ae51da1",
	"kube-03": "e77467ad-636e-4e7e-8bc9-53e46ae51da1",
	"kube-04": "e77467ad-636e-4e7e-8bc9-53e46ae51da1",
	"kube-05": "c4766d29-4dc1-11ea-9d98-0242ac110002",
	"kube-06": "c4766d29-4dc1-11ea-9d98-0242ac110002",
	"kube-07": "c4766d29-4dc1-11ea-9d98-0242ac110002",
	"kube-08": "c4766d29-4dc1-11ea-9d98-0242ac110002",
}

var links = map[string][]float32{
	"e77467ad-636e-4e7e-8bc9-53e46ae51da1": []float32{3, 10.4},
	"c4766d29-4dc1-11ea-9d98-0242ac110002": []float32{2, 9.6},
}

var sockets = map[string]int{
	"kube-01": 1,
	"kube-02": 0,
	"kube-03": 0,
	"kube-04": 1,
	"kube-05": 0,
	"kube-06": 1,
	"kube-07": 0,
	"kube-08": 1,
}

var cores = map[string][]int{
	"kube-01": []int{20, 21, 22, 23},
	"kube-02": []int{2, 3, 4, 5, 6, 7, 8, 9},
	"kube-03": []int{40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55},
	"kube-04": []int{24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75},
	"kube-05": []int{0, 1, 2, 3},
	"kube-06": []int{12, 13, 14, 15, 16, 17, 18, 19},
	"kube-07": []int{4, 5, 6, 7, 8, 9, 10, 11, 24, 25, 26, 27, 28, 29, 30, 31},
	"kube-08": []int{20, 21, 22, 23, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47},
}

func readFile(cfg *Config, file string) error {
	f, err := os.Open(file)
	if err != nil {
		klog.Infof("Config file for scheduler not found. Error: %v", err)
		return err
	}
	defer f.Close()

	decoder := yaml.NewDecoder(f)
	err = decoder.Decode(&cfg)
	if err != nil {
		klog.Infof("Unable to decode the config file. Error: %v", err)
		return err
	}
	return nil
}

func connectToInfluxDB(cfg Config) (client.Client, error) {
	c, err := client.NewHTTPClient(client.HTTPConfig{
		Addr: "http://" + cfg.Server.Host + ":" + cfg.Server.Port + "",
	})
	if err != nil {
		klog.Infof("Error while connecting to InfluxDB: %v ", err.Error())
		return nil, err
	}
	klog.Infof("Connected Successfully to InfluxDB")
	return c, nil

}