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lib/dircache: add a way to dump the DirCache for debugging

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This commit is contained in:
Nick Craig-Wood 2019-08-22 11:47:50 +01:00
parent 159f2e29a8
commit 40cc8180f0
1 changed files with 27 additions and 0 deletions
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27
lib/dircache/dircache.go
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@ -4,7 +4,9 @@ package dircache
// _methods are called without the lock // _methods are called without the lock
import ( import (
"bytes"
"context" "context"
"fmt"
"log" "log"
"strings" "strings"
"sync" "sync"
@ -47,6 +49,31 @@ func New(root string, trueRootID string, fs DirCacher) *DirCache {
return d return d
} }
// String returns the directory cache in string form for debugging
func (dc *DirCache) String() string {
dc.cacheMu.RLock()
defer dc.cacheMu.RUnlock()
var buf bytes.Buffer
_, _ = buf.WriteString("DirCache{\n")
_, _ = fmt.Fprintf(&buf, "\ttrueRootID: %q,\n", dc.trueRootID)
_, _ = fmt.Fprintf(&buf, "\troot: %q,\n", dc.root)
_, _ = fmt.Fprintf(&buf, "\trootID: %q,\n", dc.rootID)
_, _ = fmt.Fprintf(&buf, "\trootParentID: %q,\n", dc.rootParentID)
_, _ = fmt.Fprintf(&buf, "\tfoundRoot: %v,\n", dc.foundRoot)
_, _ = buf.WriteString("\tcache: {\n")
for k, v := range dc.cache {
_, _ = fmt.Fprintf(&buf, "\t\t%q: %q,\n", k, v)
}
_, _ = buf.WriteString("\t},\n")
_, _ = buf.WriteString("\tinvCache: {\n")
for k, v := range dc.invCache {
_, _ = fmt.Fprintf(&buf, "\t\t%q: %q,\n", k, v)
}
_, _ = buf.WriteString("\t},\n")
_, _ = buf.WriteString("}\n")
return buf.String()
}
// Get an ID given a path // Get an ID given a path
func (dc *DirCache) Get(path string) (id string, ok bool) { func (dc *DirCache) Get(path string) (id string, ok bool) {
dc.cacheMu.RLock() dc.cacheMu.RLock()