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fix error checks when cache is offline/missing. (#5850)

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poornas 2018-04-25 22:09:05 -07:00 committed by Nitish Tiwari
parent 9aace6d36d
commit 0dc3d7ac18
1 changed files with 27 additions and 7 deletions
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30
cmd/disk-cache.go
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@ -289,13 +289,21 @@ func listDirCacheFactory(isLeaf isLeafFunc, treeWalkIgnoredErrs []error, disks [
listCacheDirs := func(bucket, prefixDir, prefixEntry string) (dirs []string, err error) {
var entries []string
for _, disk := range disks {
// ignore disk-caches that might be missing/offline
if disk == nil {
continue
}
fs := disk.FSObjects
entries, err = readDir(pathJoin(fs.fsPath, bucket, prefixDir))
if err != nil {
// For any reason disk was deleted or goes offline, continue
// and list from other disks if possible.
if err != nil {
if IsErrIgnored(err, treeWalkIgnoredErrs...) {
continue
}
return nil, err
}
// Filter entries that have the prefix prefixEntry.
entries = filterMatchingPrefix(entries, prefixEntry)
@ -377,16 +385,16 @@ func (c cacheObjects) listCacheObjects(ctx context.Context, bucket, prefix, mark
var err error
fs, err := c.cache.getCacheFS(ctx, bucket, entry)
if err != nil {
// Ignore errFileNotFound
if err == errFileNotFound {
// Ignore errDiskNotFound
if err == errDiskNotFound {
continue
}
return result, toObjectErr(err, bucket, prefix)
}
objInfo, err = fs.getObjectInfo(ctx, bucket, entry)
if err != nil {
// Ignore errFileNotFound
if err == errFileNotFound {
// Ignore ObjectNotFound error
if _, ok := err.(ObjectNotFound); ok {
continue
}
return result, toObjectErr(err, bucket, prefix)
@ -469,6 +477,10 @@ func (c cacheObjects) ListObjectsV2(ctx context.Context, bucket, prefix, continu
func (c cacheObjects) listBuckets(ctx context.Context) (buckets []BucketInfo, err error) {
m := make(map[string]string)
for _, cache := range c.cache.cfs {
// ignore disk-caches that might be missing/offline
if cache == nil {
continue
}
entries, err := cache.ListBuckets(ctx)
if err != nil {
@ -507,6 +519,10 @@ func (c cacheObjects) GetBucketInfo(ctx context.Context, bucket string) (bucketI
bucketInfo, err = getBucketInfoFn(ctx, bucket)
if backendDownError(err) {
for _, cache := range c.cache.cfs {
// ignore disk-caches that might be missing/offline
if cache == nil {
continue
}
if bucketInfo, err = cache.GetBucketInfo(ctx, bucket); err == nil {
return
}
@ -772,6 +788,10 @@ func (c cacheObjects) DeleteBucket(ctx context.Context, bucket string) (err erro
deleteBucketFn := c.DeleteBucketFn
var toDel []*cacheFSObjects
for _, cfs := range c.cache.cfs {
// ignore disk-caches that might be missing/offline
if cfs == nil {
continue
}
if _, cerr := cfs.GetBucketInfo(ctx, bucket); cerr == nil {
toDel = append(toDel, cfs)
}