|
| 1 | +package cache |
| 2 | + |
| 3 | +import ( |
| 4 | + "sync" |
| 5 | + |
| 6 | + "golang.org/x/xerrors" |
| 7 | + |
| 8 | + "github.com/aquasecurity/trivy/pkg/fanal/types" |
| 9 | +) |
| 10 | + |
| 11 | +var _ Cache = &MemoryCache{} |
| 12 | + |
| 13 | +type MemoryCache struct { |
| 14 | + artifacts sync.Map // Map to store artifact information |
| 15 | + blobs sync.Map // Map to store blob information |
| 16 | +} |
| 17 | + |
| 18 | +func NewMemoryCache() *MemoryCache { |
| 19 | + return &MemoryCache{} |
| 20 | +} |
| 21 | + |
| 22 | +// PutArtifact stores the artifact information in the memory cache |
| 23 | +func (c *MemoryCache) PutArtifact(artifactID string, artifactInfo types.ArtifactInfo) error { |
| 24 | + c.artifacts.Store(artifactID, artifactInfo) |
| 25 | + return nil |
| 26 | +} |
| 27 | + |
| 28 | +// PutBlob stores the blob information in the memory cache |
| 29 | +func (c *MemoryCache) PutBlob(blobID string, blobInfo types.BlobInfo) error { |
| 30 | + c.blobs.Store(blobID, blobInfo) |
| 31 | + return nil |
| 32 | +} |
| 33 | + |
| 34 | +// DeleteBlobs removes the specified blobs from the memory cache |
| 35 | +func (c *MemoryCache) DeleteBlobs(blobIDs []string) error { |
| 36 | + for _, blobID := range blobIDs { |
| 37 | + c.blobs.Delete(blobID) |
| 38 | + } |
| 39 | + return nil |
| 40 | +} |
| 41 | + |
| 42 | +// GetArtifact retrieves the artifact information from the memory cache |
| 43 | +func (c *MemoryCache) GetArtifact(artifactID string) (types.ArtifactInfo, error) { |
| 44 | + info, ok := c.artifacts.Load(artifactID) |
| 45 | + if !ok { |
| 46 | + return types.ArtifactInfo{}, xerrors.Errorf("artifact (%s) not found in memory cache", artifactID) |
| 47 | + } |
| 48 | + artifactInfo, ok := info.(types.ArtifactInfo) |
| 49 | + if !ok { |
| 50 | + return types.ArtifactInfo{}, xerrors.Errorf("invalid type for artifact (%s) in memory cache", artifactID) |
| 51 | + } |
| 52 | + return artifactInfo, nil |
| 53 | +} |
| 54 | + |
| 55 | +// GetBlob retrieves the blob information from the memory cache |
| 56 | +func (c *MemoryCache) GetBlob(blobID string) (types.BlobInfo, error) { |
| 57 | + info, ok := c.blobs.Load(blobID) |
| 58 | + if !ok { |
| 59 | + return types.BlobInfo{}, xerrors.Errorf("blob (%s) not found in memory cache", blobID) |
| 60 | + } |
| 61 | + blobInfo, ok := info.(types.BlobInfo) |
| 62 | + if !ok { |
| 63 | + return types.BlobInfo{}, xerrors.Errorf("invalid type for blob (%s) in memory cache", blobID) |
| 64 | + } |
| 65 | + return blobInfo, nil |
| 66 | +} |
| 67 | + |
| 68 | +// MissingBlobs determines the missing artifact and blob information in the memory cache |
| 69 | +func (c *MemoryCache) MissingBlobs(artifactID string, blobIDs []string) (bool, []string, error) { |
| 70 | + var missingArtifact bool |
| 71 | + var missingBlobIDs []string |
| 72 | + |
| 73 | + if _, err := c.GetArtifact(artifactID); err != nil { |
| 74 | + missingArtifact = true |
| 75 | + } |
| 76 | + |
| 77 | + for _, blobID := range blobIDs { |
| 78 | + if _, err := c.GetBlob(blobID); err != nil { |
| 79 | + missingBlobIDs = append(missingBlobIDs, blobID) |
| 80 | + } |
| 81 | + } |
| 82 | + |
| 83 | + return missingArtifact, missingBlobIDs, nil |
| 84 | +} |
| 85 | + |
| 86 | +// Close clears the artifact and blob information from the memory cache |
| 87 | +func (c *MemoryCache) Close() error { |
| 88 | + c.artifacts = sync.Map{} |
| 89 | + c.blobs = sync.Map{} |
| 90 | + return nil |
| 91 | +} |
| 92 | + |
| 93 | +// Clear clears the artifact and blob information from the memory cache |
| 94 | +func (c *MemoryCache) Clear() error { |
| 95 | + c.artifacts = sync.Map{} |
| 96 | + c.blobs = sync.Map{} |
| 97 | + return nil |
| 98 | +} |
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