/
ipam-demo.go
94 lines (78 loc) · 2.25 KB
/
ipam-demo.go
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package main
import (
"context"
"flag"
"fmt"
"os"
"sync"
"time"
"go.uber.org/zap/zapcore"
"sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/log/zap"
"k8s.io/klog/v2"
"github.com/neondatabase/autoscaling/neonvm/pkg/ipam"
)
var (
nadName = flag.String("nad-name", "ipam-demo", "Network Attachment Definition name")
nadNs = flag.String("nad-namespace", "default", "Network Attachment Definition namespace")
demoLoggerName = "ipam-demo"
demoNamespace = "default"
demoCount = 10
)
func main() {
opts := zap.Options{ //nolint:exhaustruct // typical options struct; not all fields expected to be filled.
Development: true,
StacktraceLevel: zapcore.Level(zapcore.PanicLevel),
TimeEncoder: zapcore.ISO8601TimeEncoder,
}
opts.BindFlags(flag.CommandLine)
flag.Parse()
// define logger
logger := zap.New(zap.UseFlagOptions(&opts)).WithName(demoLoggerName)
// define klog settings (used in LeaderElector)
klog.SetLogger(logger.V(2))
// define context with logger
ctx := log.IntoContext(context.Background(), logger)
// Create IPAM object
ipam, err := ipam.New(ctx, *nadName, *nadNs)
if err != nil {
logger.Error(err, "failed to create IPAM")
os.Exit(1)
}
defer ipam.Close()
var wg sync.WaitGroup
// acquire IPs in parallel
for i := 1; i <= demoCount; i++ {
wg.Add(1)
go func(i int) {
defer wg.Done()
startTime := time.Now()
id := fmt.Sprintf("demo-ipam-%d", i)
logger.Info("try to lease", "id", id)
if ip, err := ipam.AcquireIP(ctx, id, demoNamespace); err != nil {
logger.Error(err, "lease failed", "id", id)
} else {
logger.Info("acquired", "id", id, "ip", ip.String(), "acquired in", time.Since(startTime))
}
}(i)
time.Sleep(time.Millisecond * 200)
}
wg.Wait()
// release IPs in parallel
for i := 1; i <= demoCount; i++ {
wg.Add(1)
go func(i int) {
defer wg.Done()
startTime := time.Now()
id := fmt.Sprintf("demo-ipam-%d", i)
logger.Info("try to release", "id", id)
if ip, err := ipam.ReleaseIP(ctx, id, demoNamespace); err != nil {
logger.Error(err, "release failed", "id", id)
} else {
logger.Info("released", "id", id, "ip", ip.String(), "released in", time.Since(startTime))
}
}(i)
time.Sleep(time.Millisecond * 200)
}
wg.Wait()
}