restic/walk.go

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package restic
import (
"path/filepath"
"github.com/restic/restic/debug"
)
type WalkTreeJob struct {
Path string
Error error
Node *Node
Tree *Tree
}
func walkTree(s Server, path string, treeBlob Blob, done chan struct{}, jobCh chan<- WalkTreeJob) {
debug.Log("walkTree", "start on %q (%v)", path, treeBlob)
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// load tree
t, err := LoadTree(s, treeBlob)
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if err != nil {
jobCh <- WalkTreeJob{Path: path, Error: err}
return
}
for _, node := range t.Nodes {
p := filepath.Join(path, node.Name)
if node.Type == "dir" {
blob, err := t.Map.FindID(node.Subtree)
if err != nil {
jobCh <- WalkTreeJob{Path: p, Error: err}
continue
}
walkTree(s, p, blob, done, jobCh)
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} else {
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// load old blobs
node.blobs, err = t.Map.Select(node.Content)
if err != nil {
debug.Log("walkTree", "unable to load bobs for %q (%v): %v", path, treeBlob, err)
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}
jobCh <- WalkTreeJob{Path: p, Node: node, Error: err}
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}
}
jobCh <- WalkTreeJob{Path: filepath.Join(path), Tree: t}
debug.Log("walkTree", "done for %q (%v)", path, treeBlob)
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}
// WalkTree walks the tree specified by ID recursively and sends a job for each
// file and directory it finds. When the channel done is closed, processing
// stops.
func WalkTree(server Server, blob Blob, done chan struct{}, jobCh chan<- WalkTreeJob) {
debug.Log("WalkTree", "start on %v", blob)
walkTree(server, "", blob, done, jobCh)
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close(jobCh)
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debug.Log("WalkTree", "done")
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}