minio/cmd/fs-v1-metadata_test.go

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/*
* Minio Cloud Storage, (C) 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 cmd
import (
"bytes"
"os"
"path/filepath"
"testing"
)
// Tests scenarios which can occur for hasExtendedHeader function.
func TestHasExtendedHeader(t *testing.T) {
// All test cases concerning hasExtendedHeader function.
testCases := []struct {
metadata map[string]string
has bool
}{
// Verifies if X-Amz-Meta is present.
{
metadata: map[string]string{
"X-Amz-Meta-1": "value",
},
has: true || os.Getenv("MINIO_ENABLE_FSMETA") == "1",
},
// Verifies if X-Minio-Meta is present.
{
metadata: map[string]string{
"X-Minio-Meta-1": "value",
},
has: true || os.Getenv("MINIO_ENABLE_FSMETA") == "1",
},
// Verifies if extended header is not present.
{
metadata: map[string]string{
"md5Sum": "value",
},
has: false || os.Getenv("MINIO_ENABLE_FSMETA") == "1",
},
// Verifies if extended header is not present, but with an empty input.
{
metadata: nil,
has: false || os.Getenv("MINIO_ENABLE_FSMETA") == "1",
},
}
// Validate all test cases.
for i, testCase := range testCases {
has := hasExtendedHeader(testCase.metadata)
if has != testCase.has {
t.Fatalf("Test case %d: Expected \"%#v\", but got \"%#v\"", i+1, testCase.has, has)
}
}
}
func initFSObjects(disk string, t *testing.T) (obj ObjectLayer) {
endpoints, err := parseStorageEndPoints([]string{disk}, 0)
if err != nil {
t.Fatal(err)
}
obj, _, err = initObjectLayer(endpoints, nil)
if err != nil {
t.Fatal("Unexpected err: ", err)
}
return obj
}
// TestReadFsMetadata - readFSMetadata testing with a healthy and faulty disk
func TestReadFSMetadata(t *testing.T) {
disk := filepath.Join(os.TempDir(), "minio-"+nextSuffix())
defer removeAll(disk)
obj := initFSObjects(disk, t)
fs := obj.(fsObjects)
bucketName := "bucket"
objectName := "object"
if err := obj.MakeBucket(bucketName); err != nil {
t.Fatal("Unexpected err: ", err)
}
sha256sum := ""
if _, err := obj.PutObject(bucketName, objectName, int64(len("abcd")), bytes.NewReader([]byte("abcd")),
map[string]string{"X-Amz-Meta-AppId": "a"}, sha256sum); err != nil {
t.Fatal("Unexpected err: ", err)
}
// Construct the full path of fs.json
fsPath := "buckets/" + bucketName + "/" + objectName + "/fs.json"
// Regular fs metadata reading, no errors expected
if _, err := readFSMetadata(fs.storage, ".minio.sys", fsPath); err != nil {
t.Fatal("Unexpected error ", err)
}
// Corrupted fs.json
if err := fs.storage.AppendFile(".minio.sys", fsPath, []byte{'a'}); err != nil {
t.Fatal("Unexpected error ", err)
}
if _, err := readFSMetadata(fs.storage, ".minio.sys", fsPath); err == nil {
t.Fatal("Should fail", err)
}
// Test with corrupted disk
fsStorage := fs.storage.(*posix)
naughty := newNaughtyDisk(fsStorage, nil, errFaultyDisk)
fs.storage = naughty
if _, err := readFSMetadata(fs.storage, ".minio.sys", fsPath); errorCause(err) != errFaultyDisk {
t.Fatal("Should fail", err)
}
}
// TestWriteFsMetadata - tests of writeFSMetadata with healthy and faulty disks
func TestWriteFSMetadata(t *testing.T) {
disk := filepath.Join(os.TempDir(), "minio-"+nextSuffix())
defer removeAll(disk)
obj := initFSObjects(disk, t)
fs := obj.(fsObjects)
bucketName := "bucket"
objectName := "object"
if err := obj.MakeBucket(bucketName); err != nil {
t.Fatal("Unexpected err: ", err)
}
sha256sum := ""
if _, err := obj.PutObject(bucketName, objectName, int64(len("abcd")), bytes.NewReader([]byte("abcd")),
map[string]string{"X-Amz-Meta-AppId": "a"}, sha256sum); err != nil {
t.Fatal("Unexpected err: ", err)
}
// Construct the complete path of fs.json
fsPath := "buckets/" + bucketName + "/" + objectName + "/fs.json"
// Fs metadata reading, no errors expected (healthy disk)
fsMeta, err := readFSMetadata(fs.storage, ".minio.sys", fsPath)
if err != nil {
t.Fatal("Unexpected error ", err)
}
// Reading metadata with a corrupted disk
fsStorage := fs.storage.(*posix)
for i := 1; i <= 2; i++ {
naughty := newNaughtyDisk(fsStorage, map[int]error{i: errFaultyDisk, i + 1: errFaultyDisk}, nil)
fs.storage = naughty
if err = writeFSMetadata(fs.storage, ".minio.sys", fsPath, fsMeta); errorCause(err) != errFaultyDisk {
t.Fatal("Unexpected error", i, err)
}
}
}