You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
206 lines
6.7 KiB
206 lines
6.7 KiB
/*
|
|
* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package main
|
|
|
|
import "testing"
|
|
import "reflect"
|
|
|
|
// Tests getReadDisks which returns readable disks slice from which we can
|
|
// read parallelly.
|
|
func testGetReadDisks(t *testing.T, xl xlObjects) {
|
|
d := xl.storageDisks
|
|
testCases := []struct {
|
|
index int // index argument for getReadDisks
|
|
argDisks []StorageAPI // disks argument for getReadDisks
|
|
retDisks []StorageAPI // disks return value from getReadDisks
|
|
nextIndex int // return value from getReadDisks
|
|
err error // error return value from getReadDisks
|
|
}{
|
|
{
|
|
0,
|
|
// When all disks are available, should return data disks.
|
|
[]StorageAPI{d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]},
|
|
[]StorageAPI{d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], nil, nil, nil, nil, nil, nil, nil, nil},
|
|
8,
|
|
nil,
|
|
},
|
|
{
|
|
0,
|
|
// If a parity disk is down, should return all data disks.
|
|
[]StorageAPI{d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], nil, d[10], d[11], d[12], d[13], d[14], d[15]},
|
|
[]StorageAPI{d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], nil, nil, nil, nil, nil, nil, nil, nil},
|
|
8,
|
|
nil,
|
|
},
|
|
{
|
|
0,
|
|
// If a data disk is down, should return 7 data and 2 parity.
|
|
[]StorageAPI{nil, d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]},
|
|
[]StorageAPI{nil, d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], nil, nil, nil, nil, nil, nil},
|
|
10,
|
|
nil,
|
|
},
|
|
{
|
|
0,
|
|
// If 7 data disks are down, should return 1 data and 8 parity.
|
|
[]StorageAPI{nil, nil, nil, nil, nil, nil, nil, d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]},
|
|
[]StorageAPI{nil, nil, nil, nil, nil, nil, nil, d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]},
|
|
16,
|
|
nil,
|
|
},
|
|
{
|
|
8,
|
|
// When all disks are available, should return data disks.
|
|
[]StorageAPI{nil, nil, d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]},
|
|
[]StorageAPI{nil, nil, nil, nil, nil, nil, nil, nil, d[8], d[9], d[10], nil, nil, nil, nil, nil},
|
|
11,
|
|
nil,
|
|
},
|
|
{
|
|
11,
|
|
// When all disks are available, should return data disks.
|
|
[]StorageAPI{nil, nil, d[2], d[3], d[4], d[5], d[6], d[7], nil, nil, d[10], d[11], d[12], d[13], d[14], d[15]},
|
|
[]StorageAPI{nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, d[11], d[12], nil, nil, nil},
|
|
13,
|
|
nil,
|
|
},
|
|
{
|
|
13,
|
|
// When all disks are available, should return data disks.
|
|
[]StorageAPI{nil, nil, d[2], d[3], d[4], d[5], d[6], d[7], nil, nil, d[10], nil, nil, nil, nil, nil},
|
|
nil,
|
|
0,
|
|
errXLReadQuorum,
|
|
},
|
|
}
|
|
|
|
for i, test := range testCases {
|
|
disks, nextIndex, err := getReadDisks(test.argDisks, test.index, xl.dataBlocks)
|
|
if err != test.err {
|
|
t.Errorf("test-case %d - expected error : %s, got : %s", i+1, test.err, err)
|
|
continue
|
|
}
|
|
if test.nextIndex != nextIndex {
|
|
t.Errorf("test-case %d - expected nextIndex: %d, got : %d", i+1, test.nextIndex, nextIndex)
|
|
continue
|
|
}
|
|
if reflect.DeepEqual(test.retDisks, disks) == false {
|
|
t.Errorf("test-case %d : incorrect disks returned. %v", i+1, disks)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
// Test getOrderedDisks which returns ordered slice of disks from their
|
|
// actual distribution.
|
|
func testGetOrderedDisks(t *testing.T, xl xlObjects) {
|
|
disks := xl.storageDisks
|
|
blockCheckSums := make([]checkSumInfo, len(disks))
|
|
distribution := []int{16, 14, 12, 10, 8, 6, 4, 2, 1, 3, 5, 7, 9, 11, 13, 15}
|
|
orderedDisks, _ := getOrderedDisks(distribution, disks, blockCheckSums)
|
|
// From the "distribution" above you can notice that:
|
|
// 1st data block is in the 9th disk (i.e distribution index 8)
|
|
// 2nd data block is in the 8th disk (i.e distribution index 7) and so on.
|
|
if orderedDisks[0] != disks[8] ||
|
|
orderedDisks[1] != disks[7] ||
|
|
orderedDisks[2] != disks[9] ||
|
|
orderedDisks[3] != disks[6] ||
|
|
orderedDisks[4] != disks[10] ||
|
|
orderedDisks[5] != disks[5] ||
|
|
orderedDisks[6] != disks[11] ||
|
|
orderedDisks[7] != disks[4] ||
|
|
orderedDisks[8] != disks[12] ||
|
|
orderedDisks[9] != disks[3] ||
|
|
orderedDisks[10] != disks[13] ||
|
|
orderedDisks[11] != disks[2] ||
|
|
orderedDisks[12] != disks[14] ||
|
|
orderedDisks[13] != disks[1] ||
|
|
orderedDisks[14] != disks[15] ||
|
|
orderedDisks[15] != disks[0] {
|
|
t.Errorf("getOrderedDisks returned incorrect order.")
|
|
}
|
|
}
|
|
|
|
// Test for isSuccessDataBlocks and isSuccessDecodeBlocks.
|
|
func TestIsSuccessBlocks(t *testing.T) {
|
|
dataBlocks := 8
|
|
testCases := []struct {
|
|
enBlocks [][]byte // data and parity blocks.
|
|
successData bool // expected return value of isSuccessDataBlocks()
|
|
successDecode bool // expected return value of isSuccessDecodeBlocks()
|
|
}{
|
|
{
|
|
// When all data and partity blocks are available.
|
|
[][]byte{
|
|
{'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'},
|
|
{'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'},
|
|
},
|
|
true,
|
|
true,
|
|
},
|
|
{
|
|
// When one data block is not available.
|
|
[][]byte{
|
|
nil, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'},
|
|
{'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'},
|
|
},
|
|
false,
|
|
true,
|
|
},
|
|
{
|
|
// When one data and all parity are available, enough for reedsolomon.Reconstruct()
|
|
[][]byte{
|
|
nil, nil, nil, nil, nil, nil, nil, {'a'},
|
|
{'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'},
|
|
},
|
|
false,
|
|
true,
|
|
},
|
|
{
|
|
// Not enough disks for reedsolomon.Reconstruct()
|
|
[][]byte{
|
|
nil, nil, nil, nil, nil, nil, nil, nil,
|
|
{'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'}, {'a'},
|
|
},
|
|
false,
|
|
false,
|
|
},
|
|
}
|
|
|
|
for i, test := range testCases {
|
|
got := isSuccessDataBlocks(test.enBlocks, dataBlocks)
|
|
if test.successData != got {
|
|
t.Errorf("test-case %d : expected %v got %v", i+1, test.successData, got)
|
|
}
|
|
got = isSuccessDecodeBlocks(test.enBlocks, dataBlocks)
|
|
if test.successDecode != got {
|
|
t.Errorf("test-case %d : expected %v got %v", i+1, test.successDecode, got)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Wrapper function for testGetReadDisks, testGetOrderedDisks.
|
|
func TestErasureReadFile(t *testing.T) {
|
|
objLayer, dirs, err := getXLObjectLayer()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer removeRoots(dirs)
|
|
xl := objLayer.(xlObjects)
|
|
testGetReadDisks(t, xl)
|
|
testGetOrderedDisks(t, xl)
|
|
}
|
|
|