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Print some debug info when panicing in leveldb

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This commit is contained in:
Jakob Borg 2014-10-09 10:44:18 +02:00
parent e9d27b9d2b
commit 1bc1c0b14f
1 changed files with 32 additions and 1 deletions
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33
internal/files/leveldb.go
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@ -17,6 +17,7 @@ package files
import (
"bytes"
"fmt"
"runtime"
"sort"
"sync"
@ -59,6 +60,21 @@ type versionList struct {
versions []fileVersion
}
func (l versionList) String() string {
var b bytes.Buffer
var id protocol.DeviceID
b.WriteString("{")
for i, v := range l.versions {
if i > 0 {
b.WriteString(", ")
}
copy(id[:], v.device)
fmt.Fprintf(&b, "{%d, %v}", v.version, id)
}
b.WriteString("}")
return b.String()
}
type fileList []protocol.FileInfo
func (l fileList) Len() int {
@ -576,9 +592,15 @@ func ldbWithGlobal(db *leveldb.DB, folder []byte, truncate bool, fn fileIterator
l.Debugln(dbi.Key())
panic("no versions?")
}
fk := deviceKey(folder, vl.versions[0].device, globalKeyName(dbi.Key()))
name := globalKeyName(dbi.Key())
fk := deviceKey(folder, vl.versions[0].device, name)
bs, err := snap.Get(fk, nil)
if err != nil {
l.Debugf("folder: %q (%x)", folder, folder)
l.Debugf("key: %q (%x)", dbi.Key(), dbi.Key())
l.Debugf("vl: %v", vl)
l.Debugf("name: %q (%x)", name, name)
l.Debugf("fk: %q (%x)", fk, fk)
panic(err)
}
@ -670,6 +692,15 @@ outer:
fk := deviceKey(folder, vl.versions[i].device, name)
bs, err := snap.Get(fk, nil)
if err != nil {
var id protocol.DeviceID
copy(id[:], device)
l.Debugf("device: %v", id)
l.Debugf("need: %v, have: %v", need, have)
l.Debugf("key: %q (%x)", dbi.Key(), dbi.Key())
l.Debugf("vl: %v", vl)
l.Debugf("i: %v", i)
l.Debugf("fk: %q (%x)", fk, fk)
l.Debugf("name: %q (%x)", name, name)
panic(err)
}