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handler_utils.go
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handler_utils.go
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package monitor
import (
"context"
"fmt"
"strings"
"time"
"github.com/rancher/norman/types"
"github.com/rancher/rancher/pkg/controllers/user/workload"
"github.com/rancher/rancher/pkg/ref"
"github.com/rancher/types/apis/management.cattle.io/v3"
"github.com/rancher/types/config"
"github.com/sirupsen/logrus"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
const (
prometheusReqTimeout = 30 * time.Second
)
var (
defaultQueryDuring = "5m"
defaultTo = "now"
defaultFrom = "now-" + defaultQueryDuring
)
func newClusterGraphInputParser(input v3.QueryGraphInput) *clusterGraphInputParser {
return &clusterGraphInputParser{
Input: &input,
}
}
type clusterGraphInputParser struct {
Input *v3.QueryGraphInput
ClusterName string
Start time.Time
End time.Time
Step time.Duration
Conditions []*types.QueryCondition
}
func (p *clusterGraphInputParser) parse() (err error) {
if p.Input.MetricParams == nil {
p.Input.MetricParams = make(map[string]string)
}
p.Start, p.End, p.Step, err = parseTimeParams(p.Input.From, p.Input.To, p.Input.Interval)
if err != nil {
return err
}
return p.parseFilter()
}
func (p *clusterGraphInputParser) parseFilter() error {
if p.Input.Filters == nil {
return fmt.Errorf("must have clusterId filter")
}
p.ClusterName = p.Input.Filters["clusterId"]
if p.ClusterName == "" {
return fmt.Errorf("clusterId is empty")
}
for name, value := range p.Input.Filters {
p.Conditions = append(p.Conditions, types.NewConditionFromString(name, types.ModifierEQ, value))
}
return nil
}
func newProjectGraphInputParser(input v3.QueryGraphInput) *projectGraphInputParser {
return &projectGraphInputParser{
Input: &input,
}
}
type projectGraphInputParser struct {
Input *v3.QueryGraphInput
ProjectID string
ClusterName string
Start time.Time
End time.Time
Step time.Duration
Conditions []*types.QueryCondition
}
func (p *projectGraphInputParser) parse() (err error) {
if p.Input.MetricParams == nil {
p.Input.MetricParams = make(map[string]string)
}
p.Start, p.End, p.Step, err = parseTimeParams(p.Input.From, p.Input.To, p.Input.Interval)
if err != nil {
return err
}
return p.parseFilter()
}
func (p *projectGraphInputParser) parseFilter() error {
if p.Input.Filters == nil {
return fmt.Errorf("must have projectId filter")
}
p.ProjectID = p.Input.Filters["projectId"]
if p.ProjectID == "" {
return fmt.Errorf("projectId is empty")
}
if p.ClusterName, _ = ref.Parse(p.ProjectID); p.ClusterName == "" {
return fmt.Errorf("clusterName is empty")
}
for name, value := range p.Input.Filters {
p.Conditions = append(p.Conditions, types.NewConditionFromString(name, types.ModifierEQ, value))
}
return nil
}
type authChecker struct {
ProjectID string
Input *v3.QueryGraphInput
UserContext *config.UserContext
WorkloadController workload.CommonController
}
func newAuthChecker(ctx context.Context, userContext *config.UserContext, input *v3.QueryGraphInput, projectID string) *authChecker {
return &authChecker{
ProjectID: projectID,
Input: input,
UserContext: userContext,
WorkloadController: workload.NewWorkloadController(ctx, userContext.UserOnlyContext(), nil),
}
}
func (a *authChecker) check() error {
return a.parseNamespace()
}
func (a *authChecker) parseNamespace() error {
if a.Input.MetricParams["namespace"] != "" {
if !a.isAuthorizeNamespace() {
return fmt.Errorf("could not query unauthorize namespace")
}
return nil
}
nss, err := a.getAuthroizeNamespace()
if err != nil {
return err
}
a.Input.MetricParams["namespace"] = nss
return nil
}
func (a *authChecker) isAuthorizeNamespace() bool {
ns, err := a.UserContext.Core.Namespaces(metav1.NamespaceAll).Get(a.Input.MetricParams["namespace"], metav1.GetOptions{})
if err != nil {
logrus.Errorf("get namespace %s info failed, %v", a.Input.MetricParams["namespace"], err)
return false
}
return ns.Annotations[projectIDAnn] == a.ProjectID
}
func (a *authChecker) getAuthroizeNamespace() (string, error) {
nss, err := a.UserContext.Core.Namespaces(metav1.NamespaceAll).List(metav1.ListOptions{})
if err != nil {
return "", fmt.Errorf("list namespace failed, %v", err)
}
var authNs []string
for _, v := range nss.Items {
if v.Annotations[projectIDAnn] == a.ProjectID {
authNs = append(authNs, v.Name)
}
}
return strings.Join(authNs, "|"), nil
}
func getAuthToken(userContext *config.UserContext, appName, namespace string) (string, error) {
sa, err := userContext.Core.ServiceAccounts(namespace).Get(appName, metav1.GetOptions{})
if err != nil {
return "", fmt.Errorf("get service account %s:%s for monitor failed, %v", namespace, appName, err)
}
var secretName string
if secretName = sa.Secrets[0].Name; secretName == "" {
return "", fmt.Errorf("get secret from service account %s:%s for monitor failed, secret name is empty", namespace, appName)
}
secret, err := userContext.Core.Secrets(namespace).Get(secretName, metav1.GetOptions{})
if err != nil {
return "", fmt.Errorf("get secret %s:%s for monitor failed, %v", namespace, secretName, err)
}
return string(secret.Data["token"]), nil
}
func parseMetricParams(userContext *config.UserContext, nodeLister v3.NodeLister, resourceType, clusterName string, metricParams map[string]string) (map[string]string, error) {
newMetricParams := make(map[string]string)
for k, v := range metricParams {
newMetricParams[k] = v
}
var ip string
var err error
switch resourceType {
case ResourceNode:
instance := newMetricParams["instance"]
if instance == "" {
return nil, fmt.Errorf("instance in metric params is empty")
}
ip, err = nodeName2InternalIP(nodeLister, clusterName, instance)
if err != nil {
return newMetricParams, err
}
case ResourceWorkload:
workloadName := newMetricParams["workloadName"]
rcType, ns, name, err := parseWorkloadName(workloadName)
if err != nil {
return newMetricParams, err
}
var podOwners []string
if workloadName != "" {
if rcType == workload.ReplicaSetType || rcType == workload.ReplicationControllerType || rcType == workload.DaemonSetType || rcType == workload.StatefulSetType || rcType == workload.JobType || rcType == workload.CronJobType {
podOwners = []string{name}
}
if rcType == workload.DeploymentType {
rcs, err := userContext.Apps.ReplicaSets(ns).List(metav1.ListOptions{})
if err != nil {
return newMetricParams, fmt.Errorf("list replicasets failed, %v", err)
}
for _, rc := range rcs.Items {
if rc.OwnerReferences != nil && strings.ToLower(rc.OwnerReferences[0].Kind) == workload.DeploymentType && rc.OwnerReferences[0].Name == name {
podOwners = append(podOwners, rc.Name)
}
}
rcType = workload.ReplicaSetType
}
var podNames []string
pods, err := userContext.Core.Pods(ns).List(metav1.ListOptions{})
if err != nil {
return nil, fmt.Errorf("list pod failed, %v", err)
}
for _, pod := range pods.Items {
podRefName := pod.OwnerReferences[0].Name
podRefKind := pod.OwnerReferences[0].Kind
if pod.OwnerReferences != nil && contains(podRefName, podOwners...) && strings.ToLower(podRefKind) == rcType {
podNames = append(podNames, pod.Name)
}
}
newMetricParams["podName"] = strings.Join(podNames, "|")
}
case ResourcePod:
podName := newMetricParams["podName"]
if podName == "" {
return nil, fmt.Errorf("pod name is empty")
}
ns, name := ref.Parse(podName)
newMetricParams["namespace"] = ns
newMetricParams["podName"] = name
case ResourceContainer:
podName := newMetricParams["podName"]
if podName == "" {
return nil, fmt.Errorf("pod name is empty")
}
ns, name := ref.Parse(podName)
newMetricParams["namespace"] = ns
newMetricParams["podName"] = name
containerName := newMetricParams["containerName"]
if containerName == "" {
return nil, fmt.Errorf("container name is empty")
}
}
newMetricParams["instance"] = ip + ".*"
return newMetricParams, nil
}
func replaceParams(metricParams map[string]string, expr string) string {
var replacer []string
for k, v := range metricParams {
replacer = append(replacer, "$"+k)
replacer = append(replacer, v)
}
srp := strings.NewReplacer(replacer...)
return srp.Replace(expr)
}
func parseTimeParams(from, to, interval string) (start, end time.Time, step time.Duration, err error) {
if from == "" {
from = defaultFrom
}
if to == "" {
to = defaultTo
}
timeRange := NewTimeRange(from, to)
start, err = timeRange.ParseFrom()
if err != nil {
err = fmt.Errorf("parse param from value %s failed, %v", from, err)
return
}
end, err = timeRange.ParseTo()
if err != nil {
err = fmt.Errorf("parse param to value %s failed, %v", to, err)
return
}
i, err := getIntervalFrom(interval, defaultMinInterval)
if err != nil {
err = fmt.Errorf("parse param interval value %s failed, %v", i, err)
return
}
intervalCalculator := newIntervalCalculator(&IntervalOptions{MinInterval: i})
calInterval := intervalCalculator.Calculate(timeRange, i)
step = time.Duration(int64(calInterval.Value))
return
}
func parseWorkloadName(id string) (typeName, namespace, name string, err error) {
arr := strings.Split(id, ":")
if len(arr) < 3 {
return "", "", "", fmt.Errorf("invalid workload name: %s", id)
}
return arr[0], arr[1], arr[2], nil
}
func contains(str string, arr ...string) bool {
for _, v := range arr {
if v == str {
return true
}
}
return false
}
func isInstanceGraph(graphType string) bool {
return graphType == "singlestat"
}