Feat: Add new binary processor #4222
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| Original file line number | Diff line number | Diff line change |
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| # Copyright 2025 Google LLC 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. | ||
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| FROM gcr.io/distroless/static-debian12:nonroot | ||
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| ARG ARCH=amd64 | ||
| WORKDIR / | ||
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| COPY ./bin/processor.linux.$ARCH /processor | ||
| COPY ./bin/LICENSES . | ||
| COPY ./bin/dependencies-src.tgz . | ||
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| USER nonroot:nonroot | ||
| ENTRYPOINT ["/processor"] | ||
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| Original file line number | Diff line number | Diff line change | ||||||
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| @@ -0,0 +1,208 @@ | ||||||||
| // Copyright 2025 Google LLC 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. | ||||||||
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| // Processor | ||||||||
| package main | ||||||||
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||||||||
| import ( | ||||||||
| "context" | ||||||||
| "os" | ||||||||
| "strings" | ||||||||
| "time" | ||||||||
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||||||||
| "agones.dev/agones/pkg" | ||||||||
| "agones.dev/agones/pkg/util/httpserver" | ||||||||
| "agones.dev/agones/pkg/util/runtime" | ||||||||
| "agones.dev/agones/pkg/util/signals" | ||||||||
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||||||||
| "github.com/google/uuid" | ||||||||
| "github.com/heptiolabs/healthcheck" | ||||||||
| "github.com/sirupsen/logrus" | ||||||||
| "github.com/spf13/pflag" | ||||||||
| "github.com/spf13/viper" | ||||||||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||||||||
| "k8s.io/client-go/kubernetes" | ||||||||
| "k8s.io/client-go/rest" | ||||||||
| leaderelection "k8s.io/client-go/tools/leaderelection" | ||||||||
| "k8s.io/client-go/tools/leaderelection/resourcelock" | ||||||||
| ) | ||||||||
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||||||||
| const ( | ||||||||
| logLevelFlag = "log-level" | ||||||||
| leaderElectionFlag = "leader-election" | ||||||||
| podNamespace = "pod-namespace" | ||||||||
| leaseDurationFlag = "lease-duration" | ||||||||
| renewDeadlineFlag = "renew-deadline" | ||||||||
| retryPeriodFlag = "retry-period" | ||||||||
| ) | ||||||||
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||||||||
| var ( | ||||||||
| logger = runtime.NewLoggerWithSource("main") | ||||||||
| ) | ||||||||
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| type processorConfig struct { | ||||||||
| LogLevel string | ||||||||
| LeaderElection bool | ||||||||
| PodNamespace string | ||||||||
| LeaseDuration time.Duration | ||||||||
| RenewDeadline time.Duration | ||||||||
| RetryPeriod time.Duration | ||||||||
| } | ||||||||
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| func parseEnvFlags() processorConfig { | ||||||||
| viper.SetDefault(logLevelFlag, "Info") | ||||||||
| viper.SetDefault(leaderElectionFlag, false) | ||||||||
| viper.SetDefault(podNamespace, "") | ||||||||
| viper.SetDefault(leaseDurationFlag, 15*time.Second) | ||||||||
| viper.SetDefault(renewDeadlineFlag, 10*time.Second) | ||||||||
| viper.SetDefault(retryPeriodFlag, 2*time.Second) | ||||||||
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| pflag.String(logLevelFlag, viper.GetString(logLevelFlag), "Log level") | ||||||||
| pflag.Bool(leaderElectionFlag, viper.GetBool(leaderElectionFlag), "Enable leader election") | ||||||||
| pflag.String(podNamespace, viper.GetString(podNamespace), "Pod namespace") | ||||||||
| pflag.Duration(leaseDurationFlag, viper.GetDuration(leaseDurationFlag), "Leader election lease duration") | ||||||||
| pflag.Duration(renewDeadlineFlag, viper.GetDuration(renewDeadlineFlag), "Leader election renew deadline") | ||||||||
| pflag.Duration(retryPeriodFlag, viper.GetDuration(retryPeriodFlag), "Leader election retry period") | ||||||||
| pflag.Parse() | ||||||||
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||||||||
| viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_")) | ||||||||
| viper.AutomaticEnv() | ||||||||
| _ = viper.BindPFlags(pflag.CommandLine) | ||||||||
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||||||||
| return processorConfig{ | ||||||||
| LogLevel: viper.GetString(logLevelFlag), | ||||||||
| LeaderElection: viper.GetBool(leaderElectionFlag), | ||||||||
| PodNamespace: viper.GetString(podNamespace), | ||||||||
| LeaseDuration: viper.GetDuration(leaseDurationFlag), | ||||||||
| RenewDeadline: viper.GetDuration(renewDeadlineFlag), | ||||||||
| RetryPeriod: viper.GetDuration(retryPeriodFlag), | ||||||||
| } | ||||||||
| } | ||||||||
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||||||||
| func main() { | ||||||||
| ctx, cancelCtx := context.WithCancel(context.Background()) | ||||||||
| defer cancelCtx() | ||||||||
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| conf := parseEnvFlags() | ||||||||
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| logger.WithField("version", pkg.Version).WithField("processorConf", conf). | ||||||||
| WithField("featureGates", runtime.EncodeFeatures()). | ||||||||
| Info("Starting agones-processor") | ||||||||
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| logger.WithField("logLevel", conf.LogLevel).Info("Setting LogLevel configuration") | ||||||||
| level, err := logrus.ParseLevel(strings.ToLower(conf.LogLevel)) | ||||||||
| if err == nil { | ||||||||
| runtime.SetLevel(level) | ||||||||
| } else { | ||||||||
| logger.WithError(err).Info("Specified wrong Logging. Setting default loglevel - Info") | ||||||||
| runtime.SetLevel(logrus.InfoLevel) | ||||||||
| } | ||||||||
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| healthserver := &httpserver.Server{Logger: logger} | ||||||||
| health := healthcheck.NewHandler() | ||||||||
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||||||||
| config, err := rest.InClusterConfig() | ||||||||
| if err != nil { | ||||||||
| logger.WithError(err).Fatal("Failed to create in-cluster config") | ||||||||
| panic("Failed to create in-cluster config: " + err.Error()) | ||||||||
| } | ||||||||
| kubeClient, err := kubernetes.NewForConfig(config) | ||||||||
| if err != nil { | ||||||||
| logger.WithError(err).Fatal("Failed to create Kubernetes client") | ||||||||
| panic("Failed to create Kubernetes client: " + err.Error()) | ||||||||
| } | ||||||||
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||||||||
| go func() { | ||||||||
| healthserver.Handle("/", health) | ||||||||
| _ = healthserver.Run(context.Background(), 0) | ||||||||
| }() | ||||||||
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| signals.NewSigTermHandler(func() { | ||||||||
| logger.Info("Pod shutdown has been requested, failing readiness check") | ||||||||
| cancelCtx() | ||||||||
| os.Exit(0) | ||||||||
| }) | ||||||||
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| whenLeader(ctx, cancelCtx, logger, conf, kubeClient, func(ctx context.Context) { | ||||||||
| logger.Info("Starting processor work as leader") | ||||||||
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| // Simulate processor work (to ensure the leader is working) | ||||||||
|
There was a problem hiding this comment. (non blocking suggestion)
Suggested change
Just to make it extra clear that more work is coming. There was a problem hiding this comment. Updated: a9b200f |
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| // TODO: implement processor work | ||||||||
| ticker := time.NewTicker(5 * time.Second) | ||||||||
lacroixthomas marked this conversation as resolved.
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| defer ticker.Stop() | ||||||||
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||||||||
| for { | ||||||||
| select { | ||||||||
| case <-ctx.Done(): | ||||||||
| logger.Info("Processor work completed") | ||||||||
| return | ||||||||
| case <-ticker.C: | ||||||||
| logger.Info("Processor is active as leader") | ||||||||
| } | ||||||||
| } | ||||||||
| }) | ||||||||
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| logger.Info("Processor exited gracefully.") | ||||||||
| } | ||||||||
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| func whenLeader(ctx context.Context, cancel context.CancelFunc, logger *logrus.Entry, | ||||||||
| conf processorConfig, kubeClient *kubernetes.Clientset, start func(_ context.Context)) { | ||||||||
| if !conf.LeaderElection { | ||||||||
| start(ctx) | ||||||||
| return | ||||||||
| } | ||||||||
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||||||||
| id := uuid.New().String() | ||||||||
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| lock := &resourcelock.LeaseLock{ | ||||||||
| LeaseMeta: metav1.ObjectMeta{ | ||||||||
| Name: "agones-processor-lock", | ||||||||
| Namespace: conf.PodNamespace, | ||||||||
| }, | ||||||||
| Client: kubeClient.CoordinationV1(), | ||||||||
| LockConfig: resourcelock.ResourceLockConfig{ | ||||||||
| Identity: id, | ||||||||
| }, | ||||||||
| } | ||||||||
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| logger.WithField("id", id).Info("Leader Election ID") | ||||||||
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| leaderelection.RunOrDie(ctx, leaderelection.LeaderElectionConfig{ | ||||||||
| Lock: lock, | ||||||||
| // IMPORTANT: you MUST ensure that any code you have that | ||||||||
| // is protected by the lease must terminate **before** | ||||||||
| // you call cancel. Otherwise, you could have a background | ||||||||
| // loop still running and another process could | ||||||||
| // get elected before your background loop finished, violating | ||||||||
| // the stated goal of the lease. | ||||||||
| ReleaseOnCancel: true, | ||||||||
| LeaseDuration: conf.LeaseDuration, | ||||||||
| RenewDeadline: conf.RenewDeadline, | ||||||||
| RetryPeriod: conf.RetryPeriod, | ||||||||
| Callbacks: leaderelection.LeaderCallbacks{ | ||||||||
| OnStartedLeading: start, | ||||||||
| OnStoppedLeading: func() { | ||||||||
| logger.WithField("id", id).Info("Leader Lost") | ||||||||
| cancel() | ||||||||
| os.Exit(0) | ||||||||
| }, | ||||||||
| OnNewLeader: func(identity string) { | ||||||||
| if identity == id { | ||||||||
| return | ||||||||
| } | ||||||||
| logger.WithField("id", id).Info("New Leader Elected") | ||||||||
| }, | ||||||||
| }, | ||||||||
| }) | ||||||||
| } | ||||||||
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