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minio/test-utils_test.go

780 lines
23 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 (
"bytes"
"encoding/base64"
"encoding/hex"
"fmt"
"io"
"io/ioutil"
"math/rand"
"net/http"
"net/http/httptest"
"net/url"
"os"
"regexp"
"sort"
"strconv"
"strings"
"sync"
"testing"
"time"
"unicode/utf8"
router "github.com/gorilla/mux"
)
// Tests should initNSLock only once.
func init() {
// Initialize name space lock.
initNSLock()
}
// The Argument to TestServer should satidy the interface.
// Golang Testing.T and Testing.B, and gocheck.C satisfy the interface.
// This makes it easy to run the TestServer from any of the tests.
type TestErrHandler interface {
Error(args ...interface{})
Errorf(format string, args ...interface{})
Failed() bool
Fatal(args ...interface{})
Fatalf(format string, args ...interface{})
}
const (
// singleNodeTestStr is the string which is used as notation for Single node ObjectLayer in the unit tests.
singleNodeTestStr string = "FS"
// xLTestStr is the string which is used as notation for XL ObjectLayer in the unit tests.
xLTestStr string = "XL"
)
const letterBytes = "abcdefghijklmnopqrstuvwxyz01234569"
const (
letterIdxBits = 6 // 6 bits to represent a letter index
letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
letterIdxMax = 63 / letterIdxBits // # of letter indices fitting in 63 bits
)
// Random number state.
// We generate random temporary file names so that there's a good
// chance the file doesn't exist yet.
var randN uint32
var randmu sync.Mutex
// reseed - returns a new seed every time the function is called.
func reseed() uint32 {
return uint32(time.Now().UnixNano() + int64(os.Getpid()))
}
// nextSuffix - provides a new unique suffix every time the function is called.
func nextSuffix() string {
randmu.Lock()
r := randN
// Initial seed required, generate one.
if r == 0 {
r = reseed()
}
// constants from Numerical Recipes
r = r*1664525 + 1013904223
randN = r
randmu.Unlock()
return strconv.Itoa(int(1e9 + r%1e9))[1:]
}
// TestServer encapsulates an instantiation of a Minio instance with a temporary backend.
// Example usage:
// s := StartTestServer(t,"XL")
// defer s.Stop()
type TestServer struct {
Root string
Disks []string
AccessKey string
SecretKey string
Server *httptest.Server
}
// Starts the test server and returns the TestServer instance.
func StartTestServer(t TestErrHandler, instanceType string) TestServer {
// create an instance of TestServer.
testServer := TestServer{}
// create temporary backend for the test server.
_, erasureDisks, err := makeTestBackend(instanceType)
if err != nil {
t.Fatalf("Failed obtaining Temp Backend: <ERROR> %s", err)
}
credentials, root, err := initTestConfig("us-east-1")
if err != nil {
t.Fatalf("%s", err)
}
testServer.Root = root
testServer.Disks = erasureDisks
testServer.AccessKey = credentials.AccessKeyID
testServer.SecretKey = credentials.SecretAccessKey
// Run TestServer.
testServer.Server = httptest.NewServer(configureServerHandler(serverCmdConfig{disks: erasureDisks}))
return testServer
}
// Configure the server for the test run.
func initTestConfig(bucketLocation string) (credential, string, error) {
// Initialize server config.
initConfig()
// Get credential.
credentials := serverConfig.GetCredential()
// Set a default region.
serverConfig.SetRegion(bucketLocation)
rootPath, err := getTestRoot()
if err != nil {
return credential{}, "", err
}
// Do this only once here.
setGlobalConfigPath(rootPath)
err = serverConfig.Save()
if err != nil {
return credential{}, "", err
}
return credentials, rootPath, nil
}
// Deleting the temporary backend and stopping the server.
func (testServer TestServer) Stop() {
removeAll(testServer.Root)
for _, disk := range testServer.Disks {
removeAll(disk)
}
testServer.Server.Close()
}
// Sign given request using Signature V4.
func signRequest(req *http.Request, accessKey, secretKey string) error {
// Get hashed payload.
hashedPayload := req.Header.Get("x-amz-content-sha256")
if hashedPayload == "" {
return fmt.Errorf("Invalid hashed payload.")
}
currTime := time.Now().UTC()
// Set x-amz-date.
req.Header.Set("x-amz-date", currTime.Format(iso8601Format))
// Get header map.
headerMap := make(map[string][]string)
for k, vv := range req.Header {
// If request header key is not in ignored headers, then add it.
if _, ok := ignoredHeaders[http.CanonicalHeaderKey(k)]; !ok {
headerMap[strings.ToLower(k)] = vv
}
}
// Get header keys.
headers := []string{"host"}
for k := range headerMap {
headers = append(headers, k)
}
sort.Strings(headers)
// Get canonical headers.
var buf bytes.Buffer
for _, k := range headers {
buf.WriteString(k)
buf.WriteByte(':')
switch {
case k == "host":
buf.WriteString(req.URL.Host)
fallthrough
default:
for idx, v := range headerMap[k] {
if idx > 0 {
buf.WriteByte(',')
}
buf.WriteString(v)
}
buf.WriteByte('\n')
}
}
canonicalHeaders := buf.String()
// Get signed headers.
signedHeaders := strings.Join(headers, ";")
// Get canonical query string.
req.URL.RawQuery = strings.Replace(req.URL.Query().Encode(), "+", "%20", -1)
// Get canonical URI.
canonicalURI := getURLEncodedName(req.URL.Path)
// Get canonical request.
// canonicalRequest =
// <HTTPMethod>\n
// <CanonicalURI>\n
// <CanonicalQueryString>\n
// <CanonicalHeaders>\n
// <SignedHeaders>\n
// <HashedPayload>
//
canonicalRequest := strings.Join([]string{
req.Method,
canonicalURI,
req.URL.RawQuery,
canonicalHeaders,
signedHeaders,
hashedPayload,
}, "\n")
// Get scope.
scope := strings.Join([]string{
currTime.Format(yyyymmdd),
"us-east-1",
"s3",
"aws4_request",
}, "/")
stringToSign := "AWS4-HMAC-SHA256" + "\n" + currTime.Format(iso8601Format) + "\n"
stringToSign = stringToSign + scope + "\n"
stringToSign = stringToSign + hex.EncodeToString(sum256([]byte(canonicalRequest)))
date := sumHMAC([]byte("AWS4"+secretKey), []byte(currTime.Format(yyyymmdd)))
region := sumHMAC(date, []byte("us-east-1"))
service := sumHMAC(region, []byte("s3"))
signingKey := sumHMAC(service, []byte("aws4_request"))
signature := hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))
// final Authorization header
parts := []string{
"AWS4-HMAC-SHA256" + " Credential=" + accessKey + "/" + scope,
"SignedHeaders=" + signedHeaders,
"Signature=" + signature,
}
auth := strings.Join(parts, ", ")
req.Header.Set("Authorization", auth)
return nil
}
// Returns new HTTP request object.
func newTestRequest(method, urlStr string, contentLength int64, body io.ReadSeeker) (*http.Request, error) {
if method == "" {
method = "POST"
}
req, err := http.NewRequest(method, urlStr, nil)
if err != nil {
return nil, err
}
// Add Content-Length
req.ContentLength = contentLength
// Save for subsequent use
var hashedPayload string
switch {
case body == nil:
hashedPayload = hex.EncodeToString(sum256([]byte{}))
default:
payloadBytes, e := ioutil.ReadAll(body)
if e != nil {
return nil, e
}
hashedPayload = hex.EncodeToString(sum256(payloadBytes))
md5Base64 := base64.StdEncoding.EncodeToString(sumMD5(payloadBytes))
req.Header.Set("Content-Md5", md5Base64)
}
req.Header.Set("x-amz-content-sha256", hashedPayload)
// Seek back to beginning.
if body != nil {
body.Seek(0, 0)
// Add body
req.Body = ioutil.NopCloser(body)
} else {
// this is added to avoid panic during ioutil.ReadAll(req.Body).
// th stack trace can be found here https://github.com/minio/minio/pull/2074 .
// This is very similar to https://github.com/golang/go/issues/7527.
req.Body = ioutil.NopCloser(bytes.NewReader([]byte("")))
}
return req, nil
}
// Returns new HTTP request object signed with signature v4.
func newTestSignedRequest(method, urlStr string, contentLength int64, body io.ReadSeeker, accessKey, secretKey string) (*http.Request, error) {
req, err := newTestRequest(method, urlStr, contentLength, body)
if err != nil {
return nil, err
}
err = signRequest(req, accessKey, secretKey)
if err != nil {
return nil, err
}
return req, nil
}
// creates the temp backend setup.
// if the option is
// FS: Returns a temp single disk setup initializes FS Backend.
// XL: Returns a 16 temp single disk setup and initializse XL Backend.
func makeTestBackend(instanceType string) (ObjectLayer, []string, error) {
switch instanceType {
case "FS":
objLayer, fsroot, err := getSingleNodeObjectLayer()
if err != nil {
return nil, []string{}, err
}
return objLayer, []string{fsroot}, err
case "XL":
objectLayer, erasureDisks, err := getXLObjectLayer()
if err != nil {
return nil, []string{}, err
}
return objectLayer, erasureDisks, err
default:
errMsg := "Invalid instance type, Only FS and XL are valid options"
return nil, []string{}, fmt.Errorf("Failed obtaining Temp XL layer: <ERROR> %s", errMsg)
}
}
var src = rand.NewSource(time.Now().UTC().UnixNano())
// Function to generate random string for bucket/object names.
func randString(n int) string {
b := make([]byte, n)
// A rand.Int63() generates 63 random bits, enough for letterIdxMax letters!
for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
if remain == 0 {
cache, remain = src.Int63(), letterIdxMax
}
if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
b[i] = letterBytes[idx]
i--
}
cache >>= letterIdxBits
remain--
}
return string(b)
}
// generate random object name.
func getRandomObjectName() string {
return randString(16)
}
// generate random bucket name.
func getRandomBucketName() string {
return randString(60)
}
// NewEOFWriter returns a Writer that writes to w,
// but returns EOF error after writing n bytes.
func NewEOFWriter(w io.Writer, n int64) io.Writer {
return &EOFWriter{w, n}
}
type EOFWriter struct {
w io.Writer
n int64
}
// io.Writer implementation designed to error out with io.EOF after reading `n` bytes.
func (t *EOFWriter) Write(p []byte) (n int, err error) {
if t.n <= 0 {
return -1, io.EOF
}
// real write
n = len(p)
if int64(n) > t.n {
n = int(t.n)
}
n, err = t.w.Write(p[0:n])
t.n -= int64(n)
if err == nil {
n = len(p)
}
return
}
// queryEncode - encodes query values in their URL encoded form.
func queryEncode(v url.Values) string {
if v == nil {
return ""
}
var buf bytes.Buffer
keys := make([]string, 0, len(v))
for k := range v {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
vs := v[k]
prefix := urlEncodePath(k) + "="
for _, v := range vs {
if buf.Len() > 0 {
buf.WriteByte('&')
}
buf.WriteString(prefix)
buf.WriteString(urlEncodePath(v))
}
}
return buf.String()
}
// urlEncodePath encode the strings from UTF-8 byte representations to HTML hex escape sequences
//
// This is necessary since regular url.Parse() and url.Encode() functions do not support UTF-8
// non english characters cannot be parsed due to the nature in which url.Encode() is written
//
// This function on the other hand is a direct replacement for url.Encode() technique to support
// pretty much every UTF-8 character.
func urlEncodePath(pathName string) string {
// if object matches reserved string, no need to encode them
reservedNames := regexp.MustCompile("^[a-zA-Z0-9-_.~/]+$")
if reservedNames.MatchString(pathName) {
return pathName
}
var encodedPathname string
for _, s := range pathName {
if 'A' <= s && s <= 'Z' || 'a' <= s && s <= 'z' || '0' <= s && s <= '9' { // §2.3 Unreserved characters (mark)
encodedPathname = encodedPathname + string(s)
continue
}
switch s {
case '-', '_', '.', '~', '/': // §2.3 Unreserved characters (mark)
encodedPathname = encodedPathname + string(s)
continue
default:
len := utf8.RuneLen(s)
if len < 0 {
// if utf8 cannot convert return the same string as is
return pathName
}
u := make([]byte, len)
utf8.EncodeRune(u, s)
for _, r := range u {
hex := hex.EncodeToString([]byte{r})
encodedPathname = encodedPathname + "%" + strings.ToUpper(hex)
}
}
}
return encodedPathname
}
// construct URL for http requests for bucket operations.
func makeTestTargetURL(endPoint, bucketName, objectName string, queryValues url.Values) string {
urlStr := endPoint + "/"
if bucketName != "" {
urlStr = urlStr + bucketName + "/"
}
if objectName != "" {
urlStr = urlStr + urlEncodePath(objectName)
}
if len(queryValues) > 0 {
urlStr = urlStr + "?" + queryEncode(queryValues)
}
return urlStr
}
// return URL for uploading object into the bucket.
func getPutObjectURL(endPoint, bucketName, objectName string) string {
return makeTestTargetURL(endPoint, bucketName, objectName, url.Values{})
}
// return URL for fetching object from the bucket.
func getGetObjectURL(endPoint, bucketName, objectName string) string {
return makeTestTargetURL(endPoint, bucketName, objectName, url.Values{})
}
// return URL for deleting the object from the bucket.
func getDeleteObjectURL(endPoint, bucketName, objectName string) string {
return makeTestTargetURL(endPoint, bucketName, objectName, url.Values{})
}
// return URL for HEAD o nthe object.
func getHeadObjectURL(endPoint, bucketName, objectName string) string {
return makeTestTargetURL(endPoint, bucketName, objectName, url.Values{})
}
// return URL for inserting bucket policy.
func getPutPolicyURL(endPoint, bucketName string) string {
queryValue := url.Values{}
queryValue.Set("policy", "")
return makeTestTargetURL(endPoint, bucketName, "", queryValue)
}
// return URL for fetching bucket policy.
func getGetPolicyURL(endPoint, bucketName string) string {
queryValue := url.Values{}
queryValue.Set("policy", "")
return makeTestTargetURL(endPoint, bucketName, "", queryValue)
}
// return URL for deleting bucket policy.
func getDeletePolicyURL(endPoint, bucketName string) string {
queryValue := url.Values{}
queryValue.Set("policy", "")
return makeTestTargetURL(endPoint, bucketName, "", queryValue)
}
// return URL for creating the bucket.
func getMakeBucketURL(endPoint, bucketName string) string {
return makeTestTargetURL(endPoint, bucketName, "", url.Values{})
}
// return URL for listing buckets.
func getListBucketURL(endPoint string) string {
return makeTestTargetURL(endPoint, "", "", url.Values{})
}
// return URL for HEAD on the bucket.
func getHEADBucketURL(endPoint, bucketName string) string {
return makeTestTargetURL(endPoint, bucketName, "", url.Values{})
}
// return URL for deleting the bucket.
func getDeleteBucketURL(endPoint, bucketName string) string {
return makeTestTargetURL(endPoint, bucketName, "", url.Values{})
}
// return URL for listing objects in the bucket with V1 legacy API.
func getListObjectsV1URL(endPoint, bucketName string, maxKeys string) string {
queryValue := url.Values{}
if maxKeys != "" {
queryValue.Set("max-keys", maxKeys)
}
return makeTestTargetURL(endPoint, bucketName, "", queryValue)
}
// return URL for listing objects in the bucket with V2 API.
func getListObjectsV2URL(endPoint, bucketName string, maxKeys string) string {
queryValue := url.Values{}
queryValue.Set("list-type", "2") // Enables list objects V2 URL.
if maxKeys != "" {
queryValue.Set("max-keys", maxKeys)
}
return makeTestTargetURL(endPoint, bucketName, "", queryValue)
}
// return URL for a new multipart upload.
func getNewMultipartURL(endPoint, bucketName, objectName string) string {
queryValue := url.Values{}
queryValue.Set("uploads", "")
return makeTestTargetURL(endPoint, bucketName, objectName, queryValue)
}
// return URL for a new multipart upload.
func getPartUploadURL(endPoint, bucketName, objectName, uploadID, partNumber string) string {
queryValues := url.Values{}
queryValues.Set("uploadId", uploadID)
queryValues.Set("partNumber", partNumber)
return makeTestTargetURL(endPoint, bucketName, objectName, queryValues)
}
// return URL for aborting multipart upload.
func getAbortMultipartUploadURL(endPoint, bucketName, objectName, uploadID string) string {
queryValue := url.Values{}
queryValue.Set("uploadId", uploadID)
return makeTestTargetURL(endPoint, bucketName, objectName, queryValue)
}
// return URL for a new multipart upload.
func getListMultipartURL(endPoint, bucketName string) string {
queryValue := url.Values{}
queryValue.Set("uploads", "")
return makeTestTargetURL(endPoint, bucketName, "", queryValue)
}
// return URL for a new multipart upload.
func getListMultipartURLWithParams(endPoint, bucketName, objectName, uploadID, maxParts string) string {
queryValues := url.Values{}
queryValues.Set("uploadId", uploadID)
queryValues.Set("max-parts", maxParts)
return makeTestTargetURL(endPoint, bucketName, objectName, queryValues)
}
// return URL for completing multipart upload.
// complete multipart upload request is sent after all parts are uploaded.
func getCompleteMultipartUploadURL(endPoint, bucketName, objectName, uploadID string) string {
queryValue := url.Values{}
queryValue.Set("uploadId", uploadID)
return makeTestTargetURL(endPoint, bucketName, objectName, queryValue)
}
// returns temp root directory. `
func getTestRoot() (string, error) {
return ioutil.TempDir(os.TempDir(), "api-")
}
// getXLObjectLayer - Instantiates XL object layer and returns it.
func getXLObjectLayer() (ObjectLayer, []string, error) {
var nDisks = 16 // Maximum disks.
var erasureDisks []string
for i := 0; i < nDisks; i++ {
path, err := ioutil.TempDir(os.TempDir(), "minio-")
if err != nil {
return nil, nil, err
}
erasureDisks = append(erasureDisks, path)
}
objLayer, err := newXLObjects(erasureDisks, nil)
if err != nil {
return nil, nil, err
}
return objLayer, erasureDisks, nil
}
// getSingleNodeObjectLayer - Instantiates single node object layer and returns it.
func getSingleNodeObjectLayer() (ObjectLayer, string, error) {
// Make a temporary directory to use as the obj.
fsDir, err := ioutil.TempDir("", "minio-")
if err != nil {
return nil, "", err
}
// Create the obj.
objLayer, err := newFSObjects(fsDir)
if err != nil {
return nil, "", err
}
return objLayer, fsDir, nil
}
// removeRoots - Cleans up initialized directories during tests.
func removeRoots(roots []string) {
for _, root := range roots {
removeAll(root)
}
}
//removeDiskN - removes N disks from supplied disk slice.
func removeDiskN(disks []string, n int) {
if n > len(disks) {
n = len(disks)
}
for _, disk := range disks[:n] {
removeAll(disk)
}
}
// Regular object test type.
type objTestType func(obj ObjectLayer, instanceType string, t TestErrHandler)
// Special object test type for disk not found situations.
type objTestDiskNotFoundType func(obj ObjectLayer, instanceType string, dirs []string, t *testing.T)
// ExecObjectLayerTest - executes object layer tests.
// Creates single node and XL ObjectLayer instance and runs test for both the layers.
func ExecObjectLayerTest(t TestErrHandler, objTest objTestType) {
objLayer, fsDir, err := getSingleNodeObjectLayer()
if err != nil {
t.Fatalf("Initialization of object layer failed for single node setup: %s", err)
}
// Executing the object layer tests for single node setup.
objTest(objLayer, singleNodeTestStr, t)
objLayer, fsDirs, err := getXLObjectLayer()
if err != nil {
t.Fatalf("Initialization of object layer failed for XL setup: %s", err)
}
// Executing the object layer tests for XL.
objTest(objLayer, xLTestStr, t)
defer removeRoots(append(fsDirs, fsDir))
}
// ExecObjectLayerDiskNotFoundTest - executes object layer tests while deleting
// disks in between tests. Creates XL ObjectLayer instance and runs test for XL layer.
func ExecObjectLayerDiskNotFoundTest(t *testing.T, objTest objTestDiskNotFoundType) {
objLayer, fsDirs, err := getXLObjectLayer()
if err != nil {
t.Fatalf("Initialization of object layer failed for XL setup: %s", err)
}
// Executing the object layer tests for XL.
objTest(objLayer, xLTestStr, fsDirs, t)
defer removeRoots(fsDirs)
}
// Special object test type for stale files situations.
type objTestStaleFilesType func(obj ObjectLayer, instanceType string, dirs []string, t *testing.T)
// ExecObjectLayerStaleFilesTest - executes object layer tests those leaves stale
// files/directories under .minio/tmp. Creates XL ObjectLayer instance and runs test for XL layer.
func ExecObjectLayerStaleFilesTest(t *testing.T, objTest objTestStaleFilesType) {
objLayer, fsDirs, err := getXLObjectLayer()
if err != nil {
t.Fatalf("Initialization of object layer failed for XL setup: %s", err)
}
// Executing the object layer tests for XL.
objTest(objLayer, xLTestStr, fsDirs, t)
defer removeRoots(fsDirs)
}
// Takes in XL/FS object layer, and the list of API end points to be tested/required, registers the API end points and returns the HTTP handler.
// Need isolated registration of API end points while writing unit tests for end points.
// All the API end points are registered only for the default case.
func initTestAPIEndPoints(objLayer ObjectLayer, apiFunctions []string) http.Handler {
// initialize a new mux router.
// goriilla/mux is the library used to register all the routes and handle them.
muxRouter := router.NewRouter()
// All object storage operations are registered as HTTP handlers on `objectAPIHandlers`.
// When the handlers get a HTTP request they use the underlyting ObjectLayer to perform operations.
api := objectAPIHandlers{
ObjectAPI: objLayer,
}
// API Router.
apiRouter := muxRouter.NewRoute().PathPrefix("/").Subrouter()
// Bucket router.
bucket := apiRouter.PathPrefix("/{bucket}").Subrouter()
// Iterate the list of API functions requested for and register them in mux HTTP handler.
for _, apiFunction := range apiFunctions {
switch apiFunction {
// Register PutBucket Policy handler.
case "PutBucketPolicy":
bucket.Methods("PUT").HandlerFunc(api.PutBucketPolicyHandler).Queries("policy", "")
// Register Delete bucket HTTP policy handler.
case "DeleteBucketPolicy":
bucket.Methods("DELETE").HandlerFunc(api.DeleteBucketPolicyHandler).Queries("policy", "")
// Register Get Bucket policy HTTP Handler.
case "GetBucketPolicy":
bucket.Methods("GET").HandlerFunc(api.GetBucketPolicyHandler).Queries("policy", "")
// Register Post Bucket policy function.
case "PostBucketPolicy":
bucket.Methods("POST").HeadersRegexp("Content-Type", "multipart/form-data*").HandlerFunc(api.PostPolicyBucketHandler)
// Register all api endpoints by default.
default:
registerAPIRouter(muxRouter, api)
// No need to register any more end points, all the end points are registered.
break
}
}
return muxRouter
}