NETOBSERV-2077: use syncMap to handle concurrency issues in intf watcher

[msherif1234]

Description

there is race condition when accessing nsDone map from multiple go routines this PR refactor the code and use syncMap instead of regular map
Fixes #524

test cases:

• multiple agent pods restarts via fc config changes no sign of error/restarts
• test FD and netlink leaks
• ran script to create and delete 10 ns while agent is up
• bring up 10 netns 1st then bring up the agent

Dependencies

n/a

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
• Does this PR require product documentation?
  • If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
  • If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
  • If so, make sure it is described in the JIRA ticket.
• QE requirements (check 1 from the list):
  • Standard QE validation, with pre-merge tests unless stated otherwise.
  • Regression tests only (e.g. refactoring with no user-facing change).
  • No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

[openshift-ci-robot]

@msherif1234: This pull request references NETOBSERV-2077 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.19.0" version, but no target version was set.

In response to this:

Description

there is race condition when accessing nsDone map from multiple go routines this PR refactor the code and use mutex locking around the map usage

Dependencies

n/a

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
• Does this PR require product documentation?
• If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
• If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
• If so, make sure it is described in the JIRA ticket.
• QE requirements (check 1 from the list):
• Standard QE validation, with pre-merge tests unless stated otherwise.
• Regression tests only (e.g. refactoring with no user-facing change).
• No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[msherif1234]

/ok-to-test

[openshift-ci-robot]

@msherif1234: This pull request references NETOBSERV-2077 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.19.0" version, but no target version was set.

In response to this:

Description

there is race condition when accessing nsDone map from multiple go routines this PR refactor the code and use mutex locking around the map usage

Fixes #524

Dependencies

n/a

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
• Does this PR require product documentation?
• If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
• If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
• If so, make sure it is described in the JIRA ticket.
• QE requirements (check 1 from the list):
• Standard QE validation, with pre-merge tests unless stated otherwise.
• Regression tests only (e.g. refactoring with no user-facing change).
• No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[github-actions]

New images:
quay.io/netobserv/ebpf-bytecode:53ecb4a
quay.io/netobserv/netobserv-ebpf-agent:53ecb4a

These will expire after two weeks.

To deploy this build, run from the operator repo, assuming the operator is running:

USER=netobserv VERSION=53ecb4a make set-agent-image

[openshift-ci-robot]

@msherif1234: This pull request references NETOBSERV-2077 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.19.0" version, but no target version was set.

In response to this:

Description

there is race condition when accessing nsDone map from multiple go routines this PR refactor the code and use mutex locking around the map usage

Fixes #524

test case:

• test FD and netlink leaks
• ran script to create and delete 10 ns while agent is up
• bring up 10 netns 1st then bring up the agent

Dependencies

n/a

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
• Does this PR require product documentation?
• If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
• If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
• If so, make sure it is described in the JIRA ticket.
• QE requirements (check 1 from the list):
• Standard QE validation, with pre-merge tests unless stated otherwise.
• Regression tests only (e.g. refactoring with no user-facing change).
• No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci-robot]

@msherif1234: This pull request references NETOBSERV-2077 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.19.0" version, but no target version was set.

In response to this:

Description

there is race condition when accessing nsDone map from multiple go routines this PR refactor the code and use mutex locking around the map usage

Fixes #524

test cases:

• test FD and netlink leaks
• ran script to create and delete 10 ns while agent is up
• bring up 10 netns 1st then bring up the agent

Dependencies

n/a

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
• Does this PR require product documentation?
• If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
• If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
• If so, make sure it is described in the JIRA ticket.
• QE requirements (check 1 from the list):
• Standard QE validation, with pre-merge tests unless stated otherwise.
• Regression tests only (e.g. refactoring with no user-facing change).
• No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci-robot]

@msherif1234: This pull request references NETOBSERV-2077 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.19.0" version, but no target version was set.

In response to this:

Description

there is race condition when accessing nsDone map from multiple go routines this PR refactor the code and use mutex locking around the map usage

Fixes #524

test cases:

• multiple agent pods restarts via fc config changes no sign of error/restarts
• test FD and netlink leaks
• ran script to create and delete 10 ns while agent is up
• bring up 10 netns 1st then bring up the agent

Dependencies

n/a

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
• Does this PR require product documentation?
• If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
• If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
• If so, make sure it is described in the JIRA ticket.
• QE requirements (check 1 from the list):
• Standard QE validation, with pre-merge tests unless stated otherwise.
• Regression tests only (e.g. refactoring with no user-facing change).
• No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[msherif1234]

/ok-to-test

[github-actions]

New images:
quay.io/netobserv/ebpf-bytecode:fbb0399
quay.io/netobserv/netobserv-ebpf-agent:fbb0399

These will expire after two weeks.

To deploy this build, run from the operator repo, assuming the operator is running:

USER=netobserv VERSION=fbb0399 make set-agent-image

[msherif1234]

cpu and memory is about the same or little bit less with no workload

[openshift-ci-robot]

@msherif1234: This pull request references NETOBSERV-2077 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.19.0" version, but no target version was set.

In response to this:

Description

there is race condition when accessing nsDone map from multiple go routines this PR refactor the code and use syncMap instead of regular map
Fixes #524

test cases:

• multiple agent pods restarts via fc config changes no sign of error/restarts
• test FD and netlink leaks
• ran script to create and delete 10 ns while agent is up
• bring up 10 netns 1st then bring up the agent

Dependencies

n/a

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
• Does this PR require product documentation?
• If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
• If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
• If so, make sure it is described in the JIRA ticket.
• QE requirements (check 1 from the list):
• Standard QE validation, with pre-merge tests unless stated otherwise.
• Regression tests only (e.g. refactoring with no user-facing change).
• No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[codecov]

Codecov Report

Attention: Patch coverage is 11.42857% with 31 lines in your changes missing coverage. Please review.

Project coverage is 27.61%. Comparing base (528ec8c) to head (6feda50).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/ifaces/watcher.go	11.42%	30 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #535      +/-   ##
==========================================
- Coverage   27.68%   27.61%   -0.08%     
==========================================
  Files          46       46              
  Lines        4930     4940      +10     
==========================================
- Hits         1365     1364       -1     
- Misses       3463     3473      +10     
- Partials      102      103       +1     

Flag	Coverage Δ
unittests	27.61% <11.42%> (-0.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
pkg/ifaces/watcher.go	48.85% <11.42%> (-3.59%)	⬇️

[memodi]

no crash seen after running for 22h:

$ oc get pods -n netobserv-privileged
NAME                         READY   STATUS    RESTARTS   AGE
netobserv-ebpf-agent-6j96w   1/1     Running   0          22h
netobserv-ebpf-agent-7lh42   1/1     Running   0          22h
netobserv-ebpf-agent-cmgdh   1/1     Running   0          22h
netobserv-ebpf-agent-h4dv7   1/1     Running   0          22h
netobserv-ebpf-agent-l87fp   1/1     Running   0          22h
netobserv-ebpf-agent-lx5sh   1/1     Running   0          22h

/label qe-approved

[openshift-ci-robot]

@msherif1234: This pull request references NETOBSERV-2077 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.19.0" version, but no target version was set.

In response to this:

Description

there is race condition when accessing nsDone map from multiple go routines this PR refactor the code and use syncMap instead of regular map
Fixes #524

test cases:

• multiple agent pods restarts via fc config changes no sign of error/restarts
• test FD and netlink leaks
• ran script to create and delete 10 ns while agent is up
• bring up 10 netns 1st then bring up the agent

Dependencies

n/a

Checklist

If you are not familiar with our processes or don't know what to answer in the list below, let us know in a comment: the maintainers will take care of that.

• Will this change affect NetObserv / Network Observability operator? If not, you can ignore the rest of this checklist.
• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
• Does this PR require product documentation?
• If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
• If so, fill in "Release Note Text" in the JIRA.
• Is there anything else the QE team should know before testing? E.g: configuration changes, environment setup, etc.
• If so, make sure it is described in the JIRA ticket.
• QE requirements (check 1 from the list):
• Standard QE validation, with pre-merge tests unless stated otherwise.
• Regression tests only (e.g. refactoring with no user-facing change).
• No QE (e.g. trivial change with high reviewer's confidence, or per agreement with the QE team).

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[msherif1234]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: msherif1234

The full list of commands accepted by this bot can be found here.

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• OWNERS [msherif1234]

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