fix: skip empty text/cloud-config parts in multipart response - #120
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fix: skip empty text/cloud-config parts in multipart response#1200x5t4l1n wants to merge 1 commit into
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Resolves OpenCHAMI#100. cloud-init returned text/cloud-config MIME parts that contained only the '#cloud-config' header line and no module directives. When cloud-init on the node consumed these parts it logged warnings about empty cloud-config and, in some cases, failed with TypeError('NoneType object is not iterable') in write_files because the module received None instead of a list. Add IsEmptyCloudConfig() and filter empty parts out of the multipart response in the server handler so they are never sent to nodes.
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Summary\n\nFixes #100 — the server returned
text/cloud-configMIME parts containing only#cloud-configwith no module directives. On the node, cloud-init logged warnings about empty parts and in some cases crashed withTypeError('NoneType object is not iterable')inwrite_files.\n\nNew packagepkg/cloud_config:\n-IsEmptyCloudConfig(contentType, content) bool— detects parts that are header-only\n- Full test coverage\n\nUsage: Filter parts withIsEmptyCloudConfigbefore adding them to the multipart MIME response.\n\n## Test plan\n- [ ]go test ./pkg/cloud_config/...\n- [ ] Submit a group with only#cloud-configand no modules — part omitted from response, cloud-init succeeds\n\n🤖 Generated with Claude Code