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XL/fs: Optimize calling isBucketExist() (#1656)

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* posix: Avoid using getAllVolumeInfo() in getVolumeDir()

This is necessary compromise to avoid significant slowness this
causes under load. The compromise is also substantial in a way
so that to avoid penalizing common cases v/s special cases.

For buckets with Caps on Unixes, we filter buckets based on the
latest anyways, so this is completely acceptable.

* XL/fs: Change the usage of verification of existance of buckets.

Optimize calling isBucketExists, it is not needed for all call
paths. isBucketExist should be called only for calls which use
temporary volume location for operations, for the rest rely on
the errors returned on their original call path.

Remove usage of filtering as well across all volume names.
This commit is contained in:
Harshavardhana
2016-05-17 21:22:27 -07:00
committed by Anand Babu (AB) Periasamy
parent 4214da65af
commit 4bc923e63b
8 changed files with 125 additions and 122 deletions
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12
xl-objects.go
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@@ -146,9 +146,6 @@ func (xl xlObjects) GetObject(bucket, object string, startOffset int64) (io.Read
if !IsValidBucketName(bucket) {
return nil, BucketNameInvalid{Bucket: bucket}
}
if !isBucketExist(xl.storage, bucket) {
return nil, BucketNotFound{Bucket: bucket}
}
// Verify if object is valid.
if !IsValidObjectName(object) {
return nil, ObjectNameInvalid{Bucket: bucket, Object: object}
@@ -261,10 +258,6 @@ func (xl xlObjects) GetObjectInfo(bucket, object string) (ObjectInfo, error) {
if !IsValidBucketName(bucket) {
return ObjectInfo{}, BucketNameInvalid{Bucket: bucket}
}
// Check whether the bucket exists.
if !isBucketExist(xl.storage, bucket) {
return ObjectInfo{}, BucketNotFound{Bucket: bucket}
}
// Verify if object is valid.
if !IsValidObjectName(object) {
return ObjectInfo{}, ObjectNameInvalid{Bucket: bucket, Object: object}
@@ -282,7 +275,7 @@ func (xl xlObjects) PutObject(bucket string, object string, size int64, data io.
if !IsValidBucketName(bucket) {
return "", BucketNameInvalid{Bucket: bucket}
}
// Check whether the bucket exists.
// Verify bucket exists.
if !isBucketExist(xl.storage, bucket) {
return "", BucketNotFound{Bucket: bucket}
}
@@ -433,9 +426,6 @@ func (xl xlObjects) DeleteObject(bucket, object string) error {
if !IsValidBucketName(bucket) {
return BucketNameInvalid{Bucket: bucket}
}
if !isBucketExist(xl.storage, bucket) {
return BucketNotFound{Bucket: bucket}
}
if !IsValidObjectName(object) {
return ObjectNameInvalid{Bucket: bucket, Object: object}
}