fix: raise gRPC client/server message limits on sbom-scanner sidecar channel

[matthyx]

Description

This PR resolves the issue where scanning larger images (such as wordpress:6.0.1-php7.4) fails because the generated SBOM size exceeds the default gRPC message size limit of 4 MiB on the client-side/server-side communication channel with sbom-scanner sidecar.

We raise the default message size limit on both ends to 128 MiB (128 * 1024 * 1024 bytes) to safely accommodate larger SBOM payloads.

This is the equivalent of kubescape/kubevuln#382 and references kubescape/kubevuln#381.

Changes

• v1 Package (pkg/sbomscanner/v1/client.go):
  • Defined MaxgRPCMessageSize = 128 * 1024 * 1024.
  • Added grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(MaxgRPCMessageSize), grpc.MaxCallSendMsgSize(MaxgRPCMessageSize)) to grpc.NewClient.
• Server Runner (pkg/sbomscanner/v1/run.go):
  • Configured grpc.NewServer with grpc.MaxRecvMsgSize(MaxgRPCMessageSize) and grpc.MaxSendMsgSize(MaxgRPCMessageSize).
• Tests (pkg/sbomscanner/v1/integration_test.go and pkg/sbomscanner/v1/server_test.go):
  • Updated test gRPC servers and clients to also use MaxgRPCMessageSize call and server options.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: fd7d2bcc-b622-4689-a023-0ccd33d57795

📥 Commits

Reviewing files that changed from the base of the PR and between d4c012f and 4006ca4.

📒 Files selected for processing (4)

• pkg/sbomscanner/v1/client.go
• pkg/sbomscanner/v1/integration_test.go
• pkg/sbomscanner/v1/run.go
• pkg/sbomscanner/v1/server_test.go

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-grpc-message-size-limit

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[github-actions]

Performance Benchmark Results

Node-Agent Resource Usage

Metric	BEFORE	AFTER	Delta
Avg CPU (cores)	0.000	0.000	N/A
Peak CPU (cores)	0.000	0.000	N/A
Avg Memory (MiB)	0.000	0.000	N/A
Peak Memory (MiB)	0.000	0.000	N/A

Dedup Effectiveness

No data available.

[github-actions]

Performance Benchmark Results

Node-Agent Resource Usage

Metric	BEFORE	AFTER	Delta
Avg CPU (cores)	0.203	0.208	+2.6%
Peak CPU (cores)	0.211	0.218	+3.1%
Avg Memory (MiB)	317.680	311.939	-1.8%
Peak Memory (MiB)	320.430	316.637	-1.2%

Dedup Effectiveness

No data available.