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listing: Fix result when prefix is an object with a slash (#10267)

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In a non recursive mode, issuing a list request where prefix
is an existing object with a slash and delimiter is a slash will
return entries in the object directory (data dir IDs)

```
$ aws s3api --profile minioadmin --endpoint-url http://localhost:9000 \
        list-objects-v2 --bucket testbucket --prefix code_of_conduct.md/ --delimiter '/'
{
    "CommonPrefixes": [
        {
            "Prefix":
"code_of_conduct.md/ec750fe0-ea7e-4b87-bbec-1e32407e5e47/"
        }
    ]
}
```

This commit adds a fast exit track in Walk() in this specific case.
This commit is contained in:
Anis Elleuch 2020-08-15 04:13:24 +01:00 committed by GitHub
parent a4463dd40f
commit 51ba1dac49
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 14 additions and 2 deletions
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8
cmd/object-api-listobjects_test.go
View File

@ -1,5 +1,5 @@
/*
* MinIO Cloud Storage, (C) 2015-2016, 2017 MinIO, Inc.
* MinIO Cloud Storage, (C) 2015-2020 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -448,7 +448,9 @@ func testListObjects(obj ObjectLayer, instanceType string, t1 TestErrHandler) {
{Name: "temporary/0/"},
},
},
// ListObjectsResult-34 Listing with marker > last object should return empty
// ListObjectsResult-34:
// * Listing with marker > last object should return empty
// * Listing an object with a trailing slash and '/' delimiter
{
IsTruncated: false,
Objects: []ObjectInfo{},
@ -569,6 +571,8 @@ func testListObjects(obj ObjectLayer, instanceType string, t1 TestErrHandler) {
{"test-bucket-empty-dir", "", "temporary/", "", 10, resultCases[33], nil, true},
// Test listing with marker > last object such that response should be empty (65)
{"test-bucket-single-object", "", "A/C", "", 1000, resultCases[34], nil, true},
// Test listing an object with a trailing slash and a slash delimiter (66)
{"test-bucket-list-object", "Asia-maps.png/", "", "/", 1000, resultCases[34], nil, true},
}
for i, testCase := range testCases {

8
cmd/xl-storage.go
View File

@ -949,6 +949,14 @@ func (s *xlStorage) Walk(volume, dirPath, marker string, recursive bool, endWalk
return nil, err
}
// Fast exit track to check if we are listing an object with
// a trailing slash, this will avoid to list the object content.
if HasSuffix(dirPath, SlashSeparator) {
if st, err := os.Stat(pathJoin(volumeDir, dirPath, xlStorageFormatFile)); err == nil && st.Mode().IsRegular() {
return nil, errFileNotFound
}
}
// buffer channel matches the S3 ListObjects implementation
ch = make(chan FileInfo, maxObjectList)
go func() {