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feat: Linux cgroup v2 support#1733

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limingyaoo merged 1 commit intomainfrom
cgroupv2_support
Oct 14, 2025
Merged

feat: Linux cgroup v2 support#1733
limingyaoo merged 1 commit intomainfrom
cgroupv2_support

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@limingyaoo limingyaoo commented Oct 3, 2025 •
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Issue #, if available:

Description of changes:
Feature: add support for Linux cgroup version 2

  • Added logic to dynamically detect the cgroup version via /sys/fs/cgroup/cgroup.controllers.

  • Introduced new CgroupV2Manager implementation to handle unified hierarchy.

  • Extended existing CgroupManager interface for common APIs (e.g., CPU/memory limits, freeze/thaw).

  • Re-enabled integration tests to verify freeze/thaw and memory/CPU limit behavior under cgroup v2 environments.

Why is this change necessary:
Greengrass currently supports only cgroup v1 controllers. Newer Linux distributions (e.g., Ubuntu 22+, Amazon Linux 2023) use cgroup v2 by default, therefore resource-limit and process-freezing features will not work.
This change ensures Nucleus can operate correctly on both cgroup versions.

How was this change tested:

  • Updated or added new unit tests. Added unit tests for v2-specific logic, while still keeping the v1 tests.
  • Updated or added new integration tests. Integration test passed for freeze/thaw functionality and CPU/memory limit configuration.
  • Updated or added new end-to-end tests.
  • If my code makes a remote network call, it was tested with a proxy.

Any additional information or context required to review the change:

Documentation Checklist:

  • Updated the README if applicable.

Compatibility Checklist:

  • I confirm that the change is backwards compatible.
  • Any modification or deletion of public interfaces does not impact other plugin components.
  • For external library version updates, I have reviewed its change logs and Nucleus does not consume
    any deprecated method or type.

Refer to Compatibility Guidelines for more information.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

MikeDombo
MikeDombo reviewed Oct 3, 2025
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@limingyaoo limingyaoo force-pushed the cgroupv2_support branch 6 times, most recently from 006465c to 732f814 Compare October 7, 2025 18:22
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github-actions bot commented Oct 7, 2025 •
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Binary incompatibility detected for commit 0d718da.
See the uploaded artifacts from the action for details. You must bump the version number.

com.aws.greengrass.componentmanager.KernelConfigResolver is binary incompatible and is source incompatible because of METHOD_REMOVED
com.aws.greengrass.deployment.activator.DefaultActivator is binary incompatible and is source incompatible because of METHOD_REMOVED_IN_SUPERCLASS
com.aws.greengrass.deployment.activator.DeploymentActivator is binary incompatible and is source incompatible because of METHOD_REMOVED
com.aws.greengrass.deployment.activator.KernelUpdateActivator is binary incompatible and is source incompatible because of METHOD_REMOVED_IN_SUPERCLASS
com.aws.greengrass.deployment.DefaultDeploymentTask is binary incompatible and is source incompatible because of CONSTRUCTOR_REMOVED
com.aws.greengrass.deployment.DeploymentConfigMerger is binary incompatible and is source incompatible because of METHOD_REMOVED
com.aws.greengrass.lifecyclemanager.KernelAlternatives is binary incompatible and is source incompatible because of METHOD_LESS_ACCESSIBLE
com.aws.greengrass.telemetry.AggregatedMetric is binary incompatible and is source incompatible because of CONSTRUCTOR_REMOVED, METHOD_RETURN_TYPE_CHANGED, METHOD_REMOVED
com.aws.greengrass.telemetry.AggregatedMetric$AggregatedMetricBuilder is binary incompatible and is source incompatible because of METHOD_REMOVED
com.aws.greengrass.util.NucleusPaths is binary incompatible and is source incompatible because of CONSTRUCTOR_REMOVED
com.aws.greengrass.util.orchestration.SystemServiceUtils is binary incompatible and is source incompatible because of METHOD_REMOVED
com.aws.greengrass.util.platforms.unix.linux.Cgroup is binary incompatible and is source incompatible because of METHOD_REMOVED, SUPERCLASS_REMOVED, FIELD_REMOVED, INTERFACE_REMOVED, CLASS_REMOVED
com.aws.greengrass.util.platforms.unix.linux.LinuxSystemResourceController$CgroupFreezerState is binary incompatible and is source incompatible because of METHOD_REMOVED, SUPERCLASS_REMOVED, FIELD_REMOVED, INTERFACE_REMOVED, CLASS_REMOVED

Produced by binaryCompatability.py

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github-actions bot commented Oct 7, 2025 •
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Unit Tests Coverage Report

File Coverage Lines Branches
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com.aws.greengrass.telemetry.PeriodicMetricsEmitter 100% 100% 0% ✅
com.aws.greengrass.telemetry.TelemetryAgent$1 60% 60% 0% ❌
com.aws.greengrass.telemetry.SystemMetricsEmitter 100% 100% 100% ✅
com.aws.greengrass.deployment.DeploymentConfigMerger 82% 84% 80% ✅
com.aws.greengrass.deployment.IotJobsHelper$IotJobsClientFactory 100% 100% 0% ✅
com.aws.greengrass.deployment.DeploymentConfigMerger$AggregateServicesChangeManager 72% 70% 75% ✅
com.aws.greengrass.deployment.DeviceConfiguration 75% 81% 69% ✅
com.aws.greengrass.deployment.DeploymentDocumentDownloader 69% 80% 58% ✅
com.aws.greengrass.deployment.DeploymentQueue 97% 100% 95% ✅
com.aws.greengrass.deployment.DeploymentService 56% 65% 47% ❌
com.aws.greengrass.deployment.IotJobsHelper$LatestQueuedJobs 69% 69% 70% ✅
com.aws.greengrass.deployment.KernelUpdateDeploymentTask 70% 83% 57% ✅
com.aws.greengrass.deployment.DynamicComponentConfigurationValidator 84% 94% 75% ✅
com.aws.greengrass.deployment.DefaultDeploymentTask 66% 77% 56% ✅
com.aws.greengrass.deployment.DeploymentDirectoryManager 71% 86% 56% ✅
com.aws.greengrass.deployment.IotJobsHelper$WrapperMqttConnectionFactory 100% 100% 0% ✅
com.aws.greengrass.deployment.IotJobsHelper 55% 61% 48% ❌
com.aws.greengrass.deployment.IotJobsHelper$1 85% 85% 0% ✅
com.aws.greengrass.deployment.ThingGroupHelper 47% 61% 33% ❌
com.aws.greengrass.deployment.ShadowDeploymentListener 23% 32% 14% ❌
com.aws.greengrass.deployment.ShadowDeploymentListener$1 14% 14% 0% ❌
com.aws.greengrass.deployment.DeploymentStatusKeeper 82% 93% 71% ✅
com.aws.greengrass.deployment.IotJobsClientWrapper 15% 15% 0% ❌
com.aws.greengrass.util.orchestration.SystemServiceUtilsFactory 0% 0% 0% ❌
com.aws.greengrass.util.orchestration.ProcdUtils 0% 0% 0% ❌
com.aws.greengrass.util.orchestration.SystemServiceUtils 0% 0% 0% ❌
com.aws.greengrass.util.orchestration.InitUtils 0% 0% 0% ❌
com.aws.greengrass.util.orchestration.SystemdUtils 0% 0% 0% ❌
com.aws.greengrass.util.orchestration.WinswUtils 0% 0% 0% ❌
com.aws.greengrass.testing.TestFeatureParameters 83% 100% 66% ✅
com.aws.greengrass.testing.TestFeatureParameters$1 100% 100% 0% ✅
com.aws.greengrass.ipc.modules.PubSubIPCService 68% 68% 0% ✅
com.aws.greengrass.ipc.modules.AuthorizationService 75% 75% 0% ✅
com.aws.greengrass.ipc.modules.ComponentMetricIPCService 69% 69% 0% ✅
com.aws.greengrass.ipc.modules.MqttProxyIPCService 64% 64% 0% ❌
com.aws.greengrass.ipc.modules.LifecycleIPCService 86% 86% 0% ✅
com.aws.greengrass.ipc.modules.ConfigStoreIPCService 66% 66% 0% ✅
com.aws.greengrass.easysetup.GreengrassSetup 75% 74% 76% ✅
com.aws.greengrass.easysetup.DeviceProvisioningHelper 69% 76% 62% ✅

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Integration Tests Coverage Report

File Coverage Lines Branches
All files 53% 57% 49% ❌
com.aws.greengrass.deployment.activator.DeploymentActivatorFactory 100% 100% 100% ✅
com.aws.greengrass.deployment.activator.KernelUpdateActivator 25% 29% 22% ❌
com.aws.greengrass.deployment.activator.DeploymentActivator 78% 82% 75% ✅
com.aws.greengrass.deployment.activator.DefaultActivator 72% 81% 64% ✅
com.aws.greengrass.authorization.AuthorizationIPCAgent$ValidateAuthorizationTokenOperationHandler 48% 47% 50% ❌
com.aws.greengrass.authorization.AuthorizationPolicyParser$1 100% 100% 0% ✅
com.aws.greengrass.authorization.AuthorizationPolicyParser$2 0% 0% 0% ❌
com.aws.greengrass.authorization.WildcardTrie 74% 79% 70% ✅
com.aws.greengrass.authorization.AuthorizationIPCAgent 100% 100% 0% ✅
com.aws.greengrass.authorization.AuthorizationPolicyParser 76% 80% 72% ✅
com.aws.greengrass.authorization.AuthorizationHandler$ResourceLookupPolicy 100% 100% 0% ✅
com.aws.greengrass.authorization.AuthorizationHandler 74% 74% 74% ✅
com.aws.greengrass.authorization.AuthorizationModule 46% 59% 33% ❌
com.aws.greengrass.authorization.AuthorizationPolicy 0% 0% 0% ❌
com.aws.greengrass.util.IotSdkClientFactory$EnvironmentStage 0% 0% 0% ❌
com.aws.greengrass.util.IotSdkClientFactory 0% 0% 0% ❌
com.aws.greengrass.util.RootCAUtils 0% 0% 0% ❌
com.aws.greengrass.util.DependencyOrder 100% 100% 100% ✅
com.aws.greengrass.util.SerializerFactory 100% 100% 0% ✅
com.aws.greengrass.util.BaseRetryableAccessor 0% 0% 0% ❌
com.aws.greengrass.util.CommitableWriter 47% 70% 25% ❌
com.aws.greengrass.util.EncryptionUtils$PemWriter 0% 0% 0% ❌
com.aws.greengrass.util.IamSdkClientFactory 0% 0% 0% ❌
com.aws.greengrass.util.OrderedExecutorService$OrderedTask 45% 66% 25% ❌
com.aws.greengrass.util.ProxyUtils 25% 29% 20% ❌
com.aws.greengrass.util.FileSystemPermission$Option 100% 100% 0% ✅
com.aws.greengrass.util.NucleusPaths 97% 97% 0% ✅
com.aws.greengrass.util.Exec 70% 85% 56% ✅
com.aws.greengrass.util.StsSdkClientFactory 0% 0% 0% ❌
com.aws.greengrass.util.MqttChunkedPayloadPublisher 35% 42% 27% ❌
com.aws.greengrass.util.LockFactory 77% 77% 0% ✅
com.aws.greengrass.util.CommitableReader 0% 0% 0% ❌
com.aws.greengrass.util.Utils$1 87% 100% 75% ✅
com.aws.greengrass.util.Utils 55% 60% 51% ❌
com.aws.greengrass.util.AppendableWriter 0% 0% 0% ❌
com.aws.greengrass.util.Digest 66% 83% 50% ✅
com.aws.greengrass.util.OrderedExecutorService 63% 77% 50% ✅
com.aws.greengrass.util.CommitableFile 65% 73% 57% ✅
com.aws.greengrass.util.RetryUtils$DifferentiatedRetryConfig 60% 60% 0% ✅
com.aws.greengrass.util.Coerce 59% 64% 53% ✅
com.aws.greengrass.util.BatchedSubscriber 59% 68% 50% ✅
com.aws.greengrass.util.LockScope 100% 100% 0% ✅
com.aws.greengrass.util.Exec$Copier 86% 91% 82% ✅
com.aws.greengrass.util.S3SdkClientFactory 38% 38% 0% ❌
com.aws.greengrass.util.LoaderLogsSummarizer 0% 0% 0% ❌
com.aws.greengrass.util.DefaultConcurrentHashMap 100% 100% 100% ✅
com.aws.greengrass.util.Coerce$1 0% 0% 0% ❌
com.aws.greengrass.util.GreengrassServiceClientFactory$1 0% 0% 0% ❌
com.aws.greengrass.util.RegionUtils 0% 0% 0% ❌
com.aws.greengrass.util.RetryUtils 24% 35% 12% ❌
com.aws.greengrass.util.Permissions 72% 89% 54% ✅
com.aws.greengrass.util.EncryptionUtils 0% 0% 0% ❌
com.aws.greengrass.util.GreengrassServiceClientFactory 46% 32% 61% ❌
com.aws.greengrass.util.platforms.windows.WindowsPlatform$CmdDecorator 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.WindowsPlatform$WindowsFileSystemPermissionView 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.UserEnv 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.WindowsPlatform 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.WindowsPlatform$1 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.WindowsPlatform$2 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.WindowsExec 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.WindowsUserAttributes 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.UserEnv$PROFILEINFO 0% 0% 0% ❌
com.aws.greengrass.util.platforms.windows.WindowsPlatform$RunasDecorator 0% 0% 0% ❌
com.aws.greengrass.componentmanager.plugins.docker.DefaultDockerClient 1% 1% 0% ❌
com.aws.greengrass.componentmanager.plugins.docker.EcrAccessor 61% 72% 50% ✅
com.aws.greengrass.componentmanager.plugins.docker.DockerImageDownloader 49% 55% 43% ❌
com.aws.greengrass.componentmanager.plugins.docker.Image 66% 66% 0% ✅
com.aws.greengrass.componentmanager.plugins.docker.Registry$RegistrySource 100% 100% 0% ✅
com.aws.greengrass.componentmanager.plugins.docker.Registry$RegistryType 100% 100% 0% ✅
com.aws.greengrass.componentmanager.plugins.docker.Registry$Credentials 75% 75% 0% ✅
com.aws.greengrass.componentmanager.plugins.docker.DockerApplicationManagerService 0% 0% 0% ❌
com.aws.greengrass.componentmanager.plugins.docker.Registry 75% 100% 50% ✅
com.aws.greengrass.componentmanager.plugins.docker.DockerImageArtifactParser 81% 88% 75% ✅
com.aws.greengrass.builtin.services.mqttproxy.MqttProxyIPCAgent 47% 53% 41% ❌
com.aws.greengrass.builtin.services.mqttproxy.MqttProxyIPCAgent$PublishToIoTCoreOperationHandler 58% 78% 37% ✅
com.aws.greengrass.builtin.services.mqttproxy.MqttProxyIPCAgent$SubscribeToIoTCoreOperationHandler 42% 49% 35% ❌
com.aws.greengrass.mqttclient.v5.PubAck 0% 0% 0% ❌
com.aws.greengrass.mqttclient.v5.Subscribe 0% 0% 0% ❌
com.aws.greengrass.mqttclient.v5.SubscribeResponse 0% 0% 0% ❌
com.aws.greengrass.mqttclient.v5.Subscribe$RetainHandlingType 87% 87% 0% ✅
com.aws.greengrass.mqttclient.v5.UnsubscribeResponse 0% 0% 0% ❌
com.aws.greengrass.mqttclient.v5.Publish$PayloadFormatIndicator 50% 50% 0% ❌
com.aws.greengrass.mqttclient.v5.QOS 50% 76% 25% ❌
com.aws.greengrass.mqttclient.v5.Publish 29% 34% 25% ❌
com.aws.greengrass.builtin.services.telemetry.ComponentMetricIPCEventStreamAgent$PutComponentMetricOperationHandler 0% 0% 0% ❌
com.aws.greengrass.builtin.services.telemetry.ComponentMetricIPCEventStreamAgent 16% 16% 0% ❌
com.aws.greengrass.componentmanager.models.ComponentIdentifier 75% 75% 0% ✅
com.aws.greengrass.componentmanager.models.ComponentMetadata 0% 0% 0% ❌
com.aws.greengrass.componentmanager.models.PermissionType 58% 66% 50% ✅
com.aws.greengrass.componentmanager.models.Permission 79% 100% 59% ✅
com.aws.greengrass.componentmanager.models.ComponentRequirementIdentifier 0% 0% 0% ❌
com.aws.greengrass.util.platforms.StubResourceController 20% 20% 0% ❌
com.aws.greengrass.util.platforms.Platform$1 100% 100% 0% ✅
com.aws.greengrass.util.platforms.UserDecorator 100% 100% 0% ✅
com.aws.greengrass.util.platforms.Platform 80% 90% 70% ✅
com.aws.greengrass.util.platforms.Platform$FileSystemPermissionView 100% 100% 0% ✅
com.aws.greengrass.dependency.Context$Value 77% 84% 70% ✅
com.aws.greengrass.dependency.EZPlugins 61% 68% 54% ✅
com.aws.greengrass.dependency.Context 76% 83% 70% ✅
com.aws.greengrass.dependency.InjectionActions 100% 100% 0% ✅
com.aws.greengrass.dependency.State 53% 80% 26% ❌
com.aws.greengrass.dependency.ComponentStatusCode 56% 74% 38% ❌
com.aws.greengrass.dependency.Context$1 84% 69% 100% ✅
com.aws.greengrass.mqttclient.spool.Spool 23% 36% 10% ❌
com.aws.greengrass.mqttclient.spool.InMemorySpool 44% 44% 0% ❌
com.aws.greengrass.mqttclient.spool.SpoolerStorageType 100% 100% 0% ✅
com.aws.greengrass.componentmanager.KernelConfigResolver 76% 84% 69% ✅
com.aws.greengrass.componentmanager.Unarchiver 72% 87% 58% ✅
com.aws.greengrass.componentmanager.ClientConfigurationUtils 0% 0% 0% ❌
com.aws.greengrass.componentmanager.ComponentStore 46% 48% 44% ❌
com.aws.greengrass.componentmanager.ComponentServiceHelper 33% 52% 14% ❌
com.aws.greengrass.componentmanager.DependencyResolver 60% 66% 53% ✅
com.aws.greengrass.componentmanager.ComponentManager 65% 60% 69% ✅
com.aws.greengrass.util.platforms.unix.UnixRunWithGenerator 63% 61% 65% ✅
com.aws.greengrass.util.platforms.unix.UnixPlatform$ShDecorator 75% 100% 50% ✅
com.aws.greengrass.util.platforms.unix.UnixUserAttributes 75% 100% 50% ✅
com.aws.greengrass.util.platforms.unix.UnixPlatform$IdOption 100% 100% 0% ✅
com.aws.greengrass.util.platforms.unix.UnixPlatform 64% 60% 67% ✅
com.aws.greengrass.util.platforms.unix.UnixExec 76% 84% 68% ✅
com.aws.greengrass.util.platforms.unix.UnixGroupAttributes 100% 100% 0% ✅
com.aws.greengrass.util.platforms.unix.QNXPlatform 0% 0% 0% ❌
com.aws.greengrass.util.platforms.unix.UnixPlatform$1 100% 100% 0% ✅
com.aws.greengrass.util.platforms.unix.UnixPlatform$SudoDecorator 76% 89% 62% ✅
com.aws.greengrass.util.platforms.unix.UnixPlatform$PosixFileSystemPermissionView 87% 91% 83% ✅
com.aws.greengrass.util.platforms.unix.DarwinPlatform 0% 0% 0% ❌
com.aws.greengrass.config.UpdateBehaviorTree$PrunedUpdateBehaviorTree 80% 80% 0% ✅
com.aws.greengrass.config.Node 78% 80% 77% ✅
com.aws.greengrass.config.PlatformResolver 36% 47% 25% ❌
com.aws.greengrass.config.ConfigurationReader$1 100% 100% 0% ✅
com.aws.greengrass.config.Configuration 65% 81% 50% ✅
com.aws.greengrass.config.ConfigurationReader 66% 76% 57% ✅
com.aws.greengrass.config.UpdateBehaviorTree 100% 100% 100% ✅
com.aws.greengrass.config.Topic 67% 73% 62% ✅
com.aws.greengrass.config.CaseInsensitiveString 65% 70% 60% ✅
com.aws.greengrass.config.Topics 70% 75% 64% ✅
com.aws.greengrass.config.ConfigurationReader$ConfigurationMode 100% 100% 0% ✅
com.aws.greengrass.config.ConfigurationWriter 75% 73% 77% ✅
com.aws.greengrass.config.WhatHappened 100% 100% 0% ✅
com.aws.greengrass.config.UpdateBehaviorTree$UpdateBehavior 100% 100% 0% ✅
com.aws.greengrass.iot.IotConnectionManager 0% 0% 0% ❌
com.aws.greengrass.iot.IotCloudHelper 0% 0% 0% ❌
com.aws.greengrass.iot.model.IotCloudResponse 0% 0% 0% ❌
com.aws.greengrass.deployment.bootstrap.BootstrapTaskStatus 100% 100% 0% ✅
com.aws.greengrass.deployment.bootstrap.BootstrapSuccessCode 0% 0% 0% ❌
com.aws.greengrass.deployment.bootstrap.BootstrapManager 59% 65% 54% ✅
com.aws.greengrass.deployment.bootstrap.BootstrapManager$1 0% 0% 0% ❌
com.aws.greengrass.deployment.bootstrap.BootstrapTaskStatus$ExecutionStatus 100% 100% 0% ✅
com.aws.greengrass.deployment.model.S3EndpointType 0% 0% 0% ❌
com.aws.greengrass.deployment.model.FailureHandlingPolicy 100% 100% 0% ✅
com.aws.greengrass.deployment.model.DeploymentTask 100% 100% 0% ✅
com.aws.greengrass.deployment.model.RunWith 70% 91% 50% ✅
com.aws.greengrass.deployment.model.DeploymentPackageConfiguration 21% 21% 0% ❌
com.aws.greengrass.deployment.model.DeploymentDocument$SDKSerializer 100% 100% 0% ✅
com.aws.greengrass.deployment.model.Deployment$DeploymentType 100% 100% 0% ✅
com.aws.greengrass.deployment.model.Deployment 72% 70% 75% ✅
com.aws.greengrass.deployment.model.Deployment$DeploymentStage 100% 100% 0% ✅
com.aws.greengrass.deployment.model.DeploymentDocument$SDKDeserializer 20% 20% 0% ❌
com.aws.greengrass.deployment.model.DeploymentTaskMetadata 78% 78% 0% ✅
com.aws.greengrass.deployment.model.DeploymentDocument 91% 100% 83% ✅
com.aws.greengrass.deployment.model.DeploymentResult$DeploymentStatus 100% 100% 0% ✅
com.aws.greengrass.status.FleetStatusService 82% 90% 74% ✅
com.aws.greengrass.status.FleetStatusService$1 16% 16% 0% ❌
com.aws.greengrass.mqttclient.MqttClient$1 12% 12% 0% ❌
com.aws.greengrass.mqttclient.MqttClient$2 100% 100% 0% ✅
com.aws.greengrass.mqttclient.AwsIotMqtt5Client 35% 45% 25% ❌
com.aws.greengrass.mqttclient.PublishRequest 70% 90% 50% ✅
com.aws.greengrass.mqttclient.MqttClient 40% 48% 33% ❌
com.aws.greengrass.mqttclient.WrapperMqttClientConnection 90% 80% 100% ✅
com.aws.greengrass.mqttclient.AwsIotMqttClient 0% 0% 0% ❌
com.aws.greengrass.mqttclient.AwsIotMqttClient$1 0% 0% 0% ❌
com.aws.greengrass.mqttclient.CallbackEventManager 32% 48% 16% ❌
com.aws.greengrass.mqttclient.IotCoreTopicValidator 61% 60% 62% ✅
com.aws.greengrass.mqttclient.MqttTopic 0% 0% 0% ❌
com.aws.greengrass.mqttclient.AwsIotMqtt5Client$1 12% 19% 5% ❌
com.aws.greengrass.mqttclient.IotCoreTopicValidator$Operation 100% 100% 0% ✅
com.aws.greengrass.network.HttpClientProvider 50% 50% 0% ❌
com.aws.greengrass.status.model.FleetStatusDetails 100% 100% 100% ✅
com.aws.greengrass.status.model.OverallStatus 100% 100% 0% ✅
com.aws.greengrass.status.model.Trigger 62% 86% 37% ✅
com.aws.greengrass.status.model.MessageType 76% 85% 66% ✅
com.aws.greengrass.deployment.errorcode.DeploymentErrorCode 100% 100% 0% ✅
com.aws.greengrass.deployment.errorcode.DeploymentErrorCodeUtils 37% 44% 29% ❌
com.aws.greengrass.deployment.errorcode.DeploymentErrorType 100% 100% 0% ✅
com.aws.greengrass.tes.CredentialRequestHandler 0% 0% 0% ❌
com.aws.greengrass.tes.CredentialRequestHandler$TESCache 0% 0% 0% ❌
com.aws.greengrass.tes.HttpServerImpl 0% 0% 0% ❌
com.aws.greengrass.tes.LazyCredentialProvider 12% 12% 0% ❌
com.aws.greengrass.tes.TokenExchangeService 0% 0% 0% ❌
com.aws.greengrass.componentmanager.converter.RecipeLoader 72% 86% 59% ✅
com.aws.greengrass.componentmanager.converter.RecipeLoader$RecipeFormat 100% 100% 0% ✅
com.aws.greengrass.lifecyclemanager.Periodicity 55% 64% 47% ❌
com.aws.greengrass.lifecyclemanager.LogManagerHelper 100% 100% 0% ✅
com.aws.greengrass.lifecyclemanager.UnloadableService 25% 25% 0% ❌
com.aws.greengrass.lifecyclemanager.RunWithPathOwnershipHandler 89% 96% 83% ✅
com.aws.greengrass.lifecyclemanager.KernelAlternatives 16% 19% 14% ❌
com.aws.greengrass.lifecyclemanager.ShellRunner$Default 73% 76% 71% ✅
com.aws.greengrass.lifecyclemanager.GreengrassService 88% 88% 87% ✅
com.aws.greengrass.lifecyclemanager.Lifecycle$DesiredStateUpdatedEvent 100% 100% 0% ✅
com.aws.greengrass.lifecyclemanager.GenericExternalService 71% 77% 65% ✅
com.aws.greengrass.lifecyclemanager.GreengrassService$RunStatus 100% 100% 0% ✅
com.aws.greengrass.lifecyclemanager.Lifecycle 85% 85% 84% ✅
com.aws.greengrass.lifecyclemanager.Kernel 57% 57% 57% ❌
com.aws.greengrass.lifecyclemanager.KernelMetricsEmitter 100% 100% 100% ✅
com.aws.greengrass.lifecyclemanager.Lifecycle$StateEvent 100% 100% 0% ✅
com.aws.greengrass.lifecyclemanager.KernelCommandLine 56% 61% 51% ❌
com.aws.greengrass.lifecyclemanager.GenericExternalService$RunResult 100% 100% 0% ✅
com.aws.greengrass.lifecyclemanager.Kernel$1 0% 0% 0% ❌
com.aws.greengrass.lifecyclemanager.KernelLifecycle 77% 79% 76% ✅
com.aws.greengrass.lifecyclemanager.PluginService 67% 68% 66% ✅
com.aws.greengrass.lifecyclemanager.UpdateSystemPolicyService 86% 86% 85% ✅
com.aws.greengrass.util.platforms.unix.linux.CgroupManager 73% 86% 60% ✅
com.aws.greengrass.util.platforms.unix.linux.LinuxSystemResourceController 68% 71% 65% ✅
com.aws.greengrass.util.platforms.unix.linux.LinuxPlatform 100% 100% 0% ✅
com.aws.greengrass.util.platforms.unix.linux.CgroupV1 0% 0% 0% ❌
com.aws.greengrass.util.platforms.unix.linux.CgroupV2 74% 89% 60% ✅
com.aws.greengrass.deployment.converter.DeploymentDocumentConverter 71% 79% 63% ✅
com.aws.greengrass.ipc.AuthenticationHandler 30% 35% 25% ❌
com.aws.greengrass.ipc.IPCEventStreamService 73% 80% 66% ✅
com.aws.greengrass.jna.Kernel32Ex 0% 0% 0% ❌
com.aws.greengrass.builtin.services.configstore.ConfigStoreIPCEventStreamAgent$UpdateConfigurationOperationHandler 68% 73% 63% ✅
com.aws.greengrass.builtin.services.configstore.ConfigStoreIPCEventStreamAgent 78% 81% 75% ✅
com.aws.greengrass.builtin.services.configstore.ConfigStoreIPCEventStreamAgent$ConfigurationUpdateOperationHandler 76% 90% 62% ✅
com.aws.greengrass.builtin.services.configstore.ConfigStoreIPCEventStreamAgent$GetConfigurationOperationHandler 67% 78% 57% ✅
com.aws.greengrass.builtin.services.configstore.ConfigStoreIPCEventStreamAgent$SendConfigurationValidityReportOperationHandler 78% 90% 66% ✅
com.aws.greengrass.builtin.services.configstore.ConfigStoreIPCEventStreamAgent$ValidateConfigurationUpdatesOperationHandler 95% 95% 0% ✅
com.aws.greengrass.ipc.common.DefaultOperationHandler 0% 0% 0% ❌
com.aws.greengrass.security.SecurityService$DefaultCryptoKeyProvider 24% 23% 25% ❌
com.aws.greengrass.security.SecurityService 38% 51% 25% ❌
com.aws.greengrass.provisioning.ProvisioningPluginFactory 100% 100% 0% ✅
com.aws.greengrass.provisioning.ProvisioningConfigUpdateHelper 75% 100% 50% ✅
com.aws.greengrass.componentmanager.builtins.GreengrassRepositoryDownloader 0% 0% 0% ❌
com.aws.greengrass.componentmanager.builtins.S3Downloader 10% 17% 3% ❌
com.aws.greengrass.componentmanager.builtins.ArtifactDownloaderFactory 52% 63% 42% ❌
com.aws.greengrass.componentmanager.builtins.ArtifactDownloader 16% 21% 11% ❌
com.aws.greengrass.builtin.services.lifecycle.LifecycleIPCEventStreamAgent$UpdateStateOperationHandler 60% 60% 0% ✅
com.aws.greengrass.builtin.services.lifecycle.LifecycleIPCEventStreamAgent$DeferComponentUpdateHandler 88% 88% 0% ✅
com.aws.greengrass.builtin.services.lifecycle.LifecycleIPCEventStreamAgent 59% 61% 56% ✅
com.aws.greengrass.builtin.services.lifecycle.LifecycleIPCEventStreamAgent$SubscribeToComponentUpdateOperationHandler 57% 64% 50% ❌
com.aws.greengrass.builtin.services.lifecycle.LifecycleIPCEventStreamAgent$PauseComponentHandler 56% 62% 50% ❌
com.aws.greengrass.builtin.services.lifecycle.LifecycleIPCEventStreamAgent$ResumeComponentHandler 56% 62% 50% ❌
com.aws.greengrass.builtin.services.pubsub.PubSubIPCEventStreamAgent$PublishToTopicOperationHandler 70% 90% 50% ✅
com.aws.greengrass.builtin.services.pubsub.SubscriptionTrie 70% 76% 64% ✅
com.aws.greengrass.builtin.services.pubsub.PubSubIPCEventStreamAgent 66% 73% 58% ✅
com.aws.greengrass.builtin.services.pubsub.PubSubIPCEventStreamAgent$SubscribeToTopicOperationHandler 97% 94% 100% ✅
com.aws.greengrass.telemetry.MetricsPayload 100% 100% 0% ✅
com.aws.greengrass.telemetry.MetricsAggregator 80% 86% 74% ✅
com.aws.greengrass.telemetry.MetricsAggregator$1 100% 100% 0% ✅
com.aws.greengrass.telemetry.AggregatedMetric 100% 100% 0% ✅
com.aws.greengrass.telemetry.TelemetryAgent 59% 71% 48% ✅
com.aws.greengrass.telemetry.TelemetryConfiguration 30% 51% 10% ❌
com.aws.greengrass.telemetry.PeriodicMetricsEmitter 100% 100% 0% ✅
com.aws.greengrass.telemetry.TelemetryAgent$1 20% 20% 0% ❌
com.aws.greengrass.telemetry.SystemMetricsEmitter 100% 100% 100% ✅
com.aws.greengrass.deployment.DeploymentConfigMerger 77% 78% 76% ✅
com.aws.greengrass.deployment.IotJobsHelper$IotJobsClientFactory 100% 100% 0% ✅
com.aws.greengrass.deployment.DeploymentConfigMerger$AggregateServicesChangeManager 76% 73% 78% ✅
com.aws.greengrass.deployment.DeviceConfiguration 71% 76% 66% ✅
com.aws.greengrass.deployment.DeploymentDocumentDownloader 14% 14% 0% ❌
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Minimum allowed coverage is 58%

Generated by 🐒 cobertura-action against 0d718da

@limingyaoo limingyaoo self-assigned this Oct 7, 2025
@limingyaoo limingyaoo marked this pull request as ready for review October 8, 2025 19:59
kstribrnAmzn
kstribrnAmzn reviewed Oct 9, 2025
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src/integrationtests/java/com/aws/greengrass/integrationtests/ipc/IPCHibernateTest.java Outdated
return LinuxSystemResourceController.CgroupFreezerState.valueOf(
new String(Files.readAllBytes(Cgroup.Freezer.getCgroupFreezerStateFilePath(serviceName)),
StandardCharsets.UTF_8).trim());
private boolean isCgroupV2() {
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@kstribrnAmzn kstribrnAmzn Oct 8, 2025

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Is there only one cgroup v2 path we can ever use?

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@limingyaoo limingyaoo Oct 13, 2025

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/sys/fs/cgroup/cgroup.controllers is the standard and reliable path for detecting cgroup v2. This file only exists when the unified hierarchy is mounted, so checking it is sufficient. (reference: https://rootlesscontaine.rs/getting-started/common/cgroup2/#checking-whether-cgroup-v2-is-already-enabled)

saranyailla
saranyailla reviewed Oct 9, 2025
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src/main/java/com/aws/greengrass/util/platforms/unix/linux/CgroupV2.java Outdated
enableControllersInRoot();

// enable controllers in greengrass cgroup for component delegation
enableControllersInGreengrass();
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@saranyailla saranyailla Oct 9, 2025 •
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Do we need to enable the same controllers over and over again for every GG component? I think it's enough to do it once.

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@kstribrnAmzn kstribrnAmzn Oct 9, 2025

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If the component is started as a child process (it should be, right?) it will inherit the cgroup.

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I suppose a plugin component would just add on to the existing process.

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@limingyaoo limingyaoo Oct 13, 2025

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Great point, I've updated the logic to enable the controller only once.

@limingyaoo limingyaoo force-pushed the cgroupv2_support branch 2 times, most recently from 142a84a to 1f96f57 Compare October 13, 2025 22:06
@limingyaoo limingyaoo merged commit 86a3562 into main Oct 14, 2025
8 of 9 checks passed
@limingyaoo limingyaoo deleted the cgroupv2_support branch October 14, 2025 20:05
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@MikeDombo MikeDombo MikeDombo left review comments

@saranyailla saranyailla saranyailla approved these changes

@kstribrnAmzn kstribrnAmzn kstribrnAmzn approved these changes

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@limingyaoo @MikeDombo @saranyailla @kstribrnAmzn