avoid panic on shared container data by getting it once

[matthyx]

No description provided.

[github-actions]

Summary:

• License scan: failure
• Credentials scan: failure
• Vulnerabilities scan: failure
• Unit test: success
• Go linting: success

[github-actions]

Summary:

• License scan: failure
• Credentials scan: failure
• Vulnerabilities scan: failure
• Unit test: success
• Go linting: success

[github-actions]

Summary:

• License scan: failure
• Credentials scan: failure
• Vulnerabilities scan: failure
• Unit test: success
• Go linting: success

[github-actions]

Summary:

• License scan: failure
• Credentials scan: failure
• Vulnerabilities scan: failure
• Unit test: success
• Go linting: success

[amitschendel]

Did it panic? or you just want to be on the safe side in either case? because the waitForSharedContainerData function returns error if it doesn't find the containerID.

[matthyx]

at least twice in our clusters (reported by Boris):

{"level":"debug","ts":"2025-02-03T12:06:10Z","msg":"RuleManager - start monitor on container","container ID":"307edf170381bbf40cd5a573bdbf14f5524e1d5941abb857a004462c6f50708f","k8s container id":"event-sourcing-be-prod/user-input-ingester-5788f8bc57-h7phl/user-input-ingester"}
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
        panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x68 pc=0x2abc5fb]

goroutine 32869 [running]:
go.opentelemetry.io/otel/sdk/trace.(*recordingSpan).End.deferwrap1()
        /go/pkg/mod/go.opentelemetry.io/otel/[email protected]/trace/span.go:467 +0x25
go.opentelemetry.io/otel/sdk/trace.(*recordingSpan).End(0xc009d6f2c0, {0x0, 0x0, 0xc009180700?})
        /go/pkg/mod/go.opentelemetry.io/otel/[email protected]/trace/span.go:506 +0xb7b
panic({0x3459de0?, 0x6f5a510?})
        /usr/local/go/src/runtime/panic.go:785 +0x132
github.com/kubescape/node-agent/pkg/networkmanager/v2.(*NetworkManager).startNetworkMonitoring(0xc000f45688, {0x44f57f8, 0xc009152e70}, 0xc008d898c0, {0xc006da3860, 0x51})
        /go/pkg/mod/github.com/kubescape/[email protected]/pkg/networkmanager/v2/network_manager.go:411 +0xa3b
created by github.com/kubescape/node-agent/pkg/networkmanager/v2.(*NetworkManager).ContainerCallback in goroutine 32852
        /go/pkg/mod/github.com/kubescape/[email protected]/pkg/networkmanager/v2/network_manager.go:473 +0x90f