mirror of
https://github.com/anchore/syft.git
synced 2026-10-30 22:12:28 +01:00
Alex Goodman
b2807f60d2
- stereoscope builds a squashed tree for every layer, each a full copy of the one below, so memory grows with layers x files. The squashed scope only ever reads the top one. - new `GetSourceConfig.WithImageSquashOnly(bool)` (and `sourceproviders.Config` field) reads images with stereoscope's `image.WithImageSquashOnly`, scoped to that one read - the CLI turns it on when `--scope squashed` (the default) - an image source read this way returns an error from `FileResolver` for `all-layers` and `deep-squashed` instead of panicking on the missing layer squashes Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
65 lines
2.1 KiB
Go
65 lines
2.1 KiB
Go
package stereoscopesource
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import (
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"context"
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"github.com/anchore/go-collections"
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"github.com/anchore/stereoscope"
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"github.com/anchore/stereoscope/pkg/image"
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"github.com/anchore/syft/syft/source"
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)
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const ImageTag = "image"
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type ProviderConfig struct {
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StereoscopeImageProviderConfig stereoscope.ImageProviderConfig
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Exclude source.ExcludeConfig
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Alias source.Alias
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// ImageSquashOnly reads the image keeping only the image squash, see image.WithImageSquashOnly
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ImageSquashOnly bool
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}
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type stereoscopeImageSourceProvider struct {
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stereoscopeProvider image.Provider
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cfg ProviderConfig
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}
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var _ source.Provider = (*stereoscopeImageSourceProvider)(nil)
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func (l stereoscopeImageSourceProvider) Name() string {
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return l.stereoscopeProvider.Name()
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}
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func (l stereoscopeImageSourceProvider) Provide(ctx context.Context) (source.Source, error) {
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if l.cfg.ImageSquashOnly {
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// scoped to this read only, the caller's ctx may be shared with reads that need every layer squash
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ctx = image.WithImageSquashOnly(ctx)
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}
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img, err := l.stereoscopeProvider.Provide(ctx)
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if err != nil {
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return nil, err
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}
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cfg := ImageConfig{
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Reference: l.cfg.StereoscopeImageProviderConfig.UserInput,
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Platform: l.cfg.StereoscopeImageProviderConfig.Platform,
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RegistryOptions: &l.cfg.StereoscopeImageProviderConfig.Registry,
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Exclude: l.cfg.Exclude,
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Alias: l.cfg.Alias,
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}
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return New(img, cfg), nil
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}
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func Providers(cfg ProviderConfig) []collections.TaggedValue[source.Provider] {
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stereoscopeProviders := collections.TaggedValueSet[source.Provider]{}
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providers := stereoscope.ImageProviders(cfg.StereoscopeImageProviderConfig)
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for _, provider := range providers {
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var sourceProvider source.Provider = stereoscopeImageSourceProvider{
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stereoscopeProvider: provider.Value,
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cfg: cfg,
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}
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stereoscopeProviders = append(stereoscopeProviders,
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collections.NewTaggedValue(sourceProvider, append([]string{provider.Value.Name(), ImageTag}, provider.Tags...)...))
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}
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return stereoscopeProviders
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}
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