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

This commit is contained in:
Nick Craig-Wood 2019-08-22 11:47:50 +01:00
parent 159f2e29a8
commit 40cc8180f0

View file

@ -4,7 +4,9 @@ package dircache
// _methods are called without the lock
import (
"bytes"
"context"
"fmt"
"log"
"strings"
"sync"
@ -47,6 +49,31 @@ func New(root string, trueRootID string, fs DirCacher) *DirCache {
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
func (dc *DirCache) Get(path string) (id string, ok bool) {
dc.cacheMu.RLock()