mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-04 12:10:20 +00:00
222 lines
7.9 KiB
Go
222 lines
7.9 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
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 ipamperf
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"sort"
|
|
"sync"
|
|
"time"
|
|
|
|
"k8s.io/api/core/v1"
|
|
"k8s.io/client-go/informers"
|
|
clientset "k8s.io/client-go/kubernetes"
|
|
"k8s.io/client-go/tools/cache"
|
|
cloudprovider "k8s.io/cloud-provider"
|
|
"k8s.io/klog"
|
|
"k8s.io/kubernetes/pkg/controller/nodeipam/ipam"
|
|
nodeutil "k8s.io/kubernetes/pkg/controller/util/node"
|
|
)
|
|
|
|
// Config represents the test configuration that is being run
|
|
type Config struct {
|
|
CreateQPS int // rate at which nodes are created
|
|
KubeQPS int // rate for communication with kubernetes API
|
|
CloudQPS int // rate for communication with cloud endpoint
|
|
NumNodes int // number of nodes to created and monitored
|
|
AllocatorType ipam.CIDRAllocatorType // type of allocator to run
|
|
Cloud cloudprovider.Interface // cloud provider
|
|
}
|
|
|
|
type nodeTime struct {
|
|
added time.Time // observed time for when node was added
|
|
allocated time.Time // observed time for when node was assigned podCIDR
|
|
podCIDR string // the allocated podCIDR range
|
|
}
|
|
|
|
// Observer represents the handle to test observer that watches for node changes
|
|
// and tracks behavior
|
|
type Observer struct {
|
|
numAdded int // number of nodes observed added
|
|
numAllocated int // number of nodes observed allocated podCIDR
|
|
timing map[string]*nodeTime // per node timing
|
|
numNodes int // the number of nodes to expect
|
|
stopChan chan struct{} // for the shared informer
|
|
wg sync.WaitGroup
|
|
clientSet *clientset.Clientset
|
|
}
|
|
|
|
// JSONDuration is an alias of time.Duration to support custom Marshal code
|
|
type JSONDuration time.Duration
|
|
|
|
// NodeDuration represents the CIDR allocation time for each node
|
|
type NodeDuration struct {
|
|
Name string // node name
|
|
PodCIDR string // the podCIDR that was assigned to the node
|
|
Duration JSONDuration // how long it took to assign podCIDR
|
|
}
|
|
|
|
// Results represents the observed test results.
|
|
type Results struct {
|
|
Name string // name for the test
|
|
Config *Config // handle to the test config
|
|
Succeeded bool // whether all nodes were assigned podCIDR
|
|
MaxAllocTime JSONDuration // the maximum time take for assignment per node
|
|
TotalAllocTime JSONDuration // duration between first addition and last assignment
|
|
NodeAllocTime []NodeDuration // assignment time by node name
|
|
}
|
|
|
|
// NewObserver creates a new observer given a handle to the Clientset
|
|
func NewObserver(clientSet *clientset.Clientset, numNodes int) *Observer {
|
|
o := &Observer{
|
|
timing: map[string]*nodeTime{},
|
|
numNodes: numNodes,
|
|
clientSet: clientSet,
|
|
stopChan: make(chan struct{}),
|
|
}
|
|
return o
|
|
}
|
|
|
|
// StartObserving starts an asynchronous loop to monitor for node changes.
|
|
// Call Results() to get the test results after starting observer.
|
|
func (o *Observer) StartObserving() error {
|
|
o.monitor()
|
|
klog.Infof("Test observer started")
|
|
return nil
|
|
}
|
|
|
|
// Results returns the test results. It waits for the observer to finish
|
|
// and returns the computed results of the observations.
|
|
func (o *Observer) Results(name string, config *Config) *Results {
|
|
var (
|
|
firstAdd time.Time // earliest time any node was added (first node add)
|
|
lastAssignment time.Time // latest time any node was assignged CIDR (last node assignment)
|
|
)
|
|
o.wg.Wait()
|
|
close(o.stopChan) // shutdown the shared informer
|
|
|
|
results := &Results{
|
|
Name: name,
|
|
Config: config,
|
|
Succeeded: o.numAdded == o.numNodes && o.numAllocated == o.numNodes,
|
|
MaxAllocTime: 0,
|
|
NodeAllocTime: []NodeDuration{},
|
|
}
|
|
for name, nTime := range o.timing {
|
|
addFound := !nTime.added.IsZero()
|
|
if addFound && (firstAdd.IsZero() || nTime.added.Before(firstAdd)) {
|
|
firstAdd = nTime.added
|
|
}
|
|
cidrFound := !nTime.allocated.IsZero()
|
|
if cidrFound && nTime.allocated.After(lastAssignment) {
|
|
lastAssignment = nTime.allocated
|
|
}
|
|
if addFound && cidrFound {
|
|
allocTime := nTime.allocated.Sub(nTime.added)
|
|
if allocTime > time.Duration(results.MaxAllocTime) {
|
|
results.MaxAllocTime = JSONDuration(allocTime)
|
|
}
|
|
results.NodeAllocTime = append(results.NodeAllocTime, NodeDuration{
|
|
Name: name, PodCIDR: nTime.podCIDR, Duration: JSONDuration(allocTime),
|
|
})
|
|
}
|
|
}
|
|
results.TotalAllocTime = JSONDuration(lastAssignment.Sub(firstAdd))
|
|
sort.Slice(results.NodeAllocTime, func(i, j int) bool {
|
|
return results.NodeAllocTime[i].Duration > results.NodeAllocTime[j].Duration
|
|
})
|
|
return results
|
|
}
|
|
|
|
func (o *Observer) monitor() {
|
|
o.wg.Add(1)
|
|
|
|
sharedInformer := informers.NewSharedInformerFactory(o.clientSet, 1*time.Second)
|
|
nodeInformer := sharedInformer.Core().V1().Nodes().Informer()
|
|
|
|
nodeInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
|
|
AddFunc: nodeutil.CreateAddNodeHandler(func(node *v1.Node) (err error) {
|
|
name := node.GetName()
|
|
if node.Spec.PodCIDR != "" {
|
|
// ignore nodes that have PodCIDR (might be hold over from previous runs that did not get cleaned up)
|
|
return
|
|
}
|
|
nTime := &nodeTime{}
|
|
o.timing[name] = nTime
|
|
nTime.added = time.Now()
|
|
o.numAdded = o.numAdded + 1
|
|
return
|
|
}),
|
|
UpdateFunc: nodeutil.CreateUpdateNodeHandler(func(oldNode, newNode *v1.Node) (err error) {
|
|
name := newNode.GetName()
|
|
nTime, found := o.timing[name]
|
|
if !found {
|
|
return // consistency check - ignore nodes we have not seen the add event for
|
|
}
|
|
// check if CIDR assigned and ignore redundant updates
|
|
if newNode.Spec.PodCIDR != "" && nTime.podCIDR == "" {
|
|
nTime.allocated = time.Now()
|
|
nTime.podCIDR = newNode.Spec.PodCIDR
|
|
o.numAllocated++
|
|
if o.numAllocated%10 == 0 {
|
|
klog.Infof("progress: %d/%d - %.2d%%", o.numAllocated, o.numNodes, (o.numAllocated * 100.0 / o.numNodes))
|
|
}
|
|
// do following check only if numAllocated is modified, as otherwise, redundant updates
|
|
// can cause wg.Done() to be called multiple times, causing a panic
|
|
if o.numAdded == o.numNodes && o.numAllocated == o.numNodes {
|
|
klog.Info("All nodes assigned podCIDR")
|
|
o.wg.Done()
|
|
}
|
|
}
|
|
return
|
|
}),
|
|
})
|
|
sharedInformer.Start(o.stopChan)
|
|
}
|
|
|
|
// String implements the Stringer interface and returns a multi-line representation
|
|
// of the test results.
|
|
func (results *Results) String() string {
|
|
var b bytes.Buffer
|
|
fmt.Fprintf(&b, "\n TestName: %s", results.Name)
|
|
fmt.Fprintf(&b, "\n NumNodes: %d, CreateQPS: %d, KubeQPS: %d, CloudQPS: %d, Allocator: %v",
|
|
results.Config.NumNodes, results.Config.CreateQPS, results.Config.KubeQPS,
|
|
results.Config.CloudQPS, results.Config.AllocatorType)
|
|
fmt.Fprintf(&b, "\n Succeeded: %v, TotalAllocTime: %v, MaxAllocTime: %v",
|
|
results.Succeeded, time.Duration(results.TotalAllocTime), time.Duration(results.MaxAllocTime))
|
|
fmt.Fprintf(&b, "\n %5s %-20s %-20s %s", "Num", "Node", "PodCIDR", "Duration (s)")
|
|
for i, d := range results.NodeAllocTime {
|
|
fmt.Fprintf(&b, "\n %5d %-20s %-20s %10.3f", i+1, d.Name, d.PodCIDR, time.Duration(d.Duration).Seconds())
|
|
}
|
|
return b.String()
|
|
}
|
|
|
|
// MarshalJSON implements the json.Marshaler interface
|
|
func (jDuration *JSONDuration) MarshalJSON() ([]byte, error) {
|
|
return []byte(fmt.Sprintf("\"%s\"", time.Duration(*jDuration).String())), nil
|
|
}
|
|
|
|
// UnmarshalJSON implements the json.Unmarshaler interface
|
|
func (jDuration *JSONDuration) UnmarshalJSON(b []byte) (err error) {
|
|
var d time.Duration
|
|
if d, err = time.ParseDuration(string(b[1 : len(b)-1])); err == nil {
|
|
*jDuration = JSONDuration(d)
|
|
}
|
|
return
|
|
}
|