mirror of https://github.com/octoleo/restic.git
40 lines
885 B
Go
40 lines
885 B
Go
package restic
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import "context"
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// FindUsedBlobs traverses the tree ID and adds all seen blobs (trees and data
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// blobs) to the set blobs. The tree blobs in the `seen` BlobSet will not be visited
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// again.
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func FindUsedBlobs(ctx context.Context, repo Repository, treeID ID, blobs BlobSet, seen BlobSet) error {
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blobs.Insert(BlobHandle{ID: treeID, Type: TreeBlob})
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tree, err := repo.LoadTree(ctx, treeID)
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if err != nil {
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return err
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}
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for _, node := range tree.Nodes {
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switch node.Type {
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case "file":
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for _, blob := range node.Content {
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blobs.Insert(BlobHandle{ID: blob, Type: DataBlob})
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}
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case "dir":
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subtreeID := *node.Subtree
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h := BlobHandle{ID: subtreeID, Type: TreeBlob}
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if seen.Has(h) {
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continue
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}
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seen.Insert(h)
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err := FindUsedBlobs(ctx, repo, subtreeID, blobs, seen)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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