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/*
* MinIO Cloud Storage, (C) 2016-2019 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"
"context"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"net/http/httptest"
"net/url"
"sync"
"testing"
"github.com/gorilla/mux"
"github.com/minio/minio/pkg/auth"
"github.com/minio/minio/pkg/madmin"
)
// adminErasureTestBed - encapsulates subsystems that need to be setup for
// admin-handler unit tests.
type adminErasureTestBed struct {
erasureDirs []string
objLayer ObjectLayer
router *mux.Router
}
// prepareAdminErasureTestBed - helper function that setups a single-node
// Erasure backend for admin-handler tests.
func prepareAdminErasureTestBed(ctx context.Context) (*adminErasureTestBed, error) {
// reset global variables to start afresh.
resetTestGlobals()
// Set globalIsErasure to indicate that the setup uses an erasure
// code backend.
globalIsErasure = true
// Initializing objectLayer for HealFormatHandler.
objLayer, erasureDirs, xlErr := initTestErasureObjLayer(ctx)
if xlErr != nil {
return nil, xlErr
}
// Initialize minio server config.
if err := newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
return nil, err
}
// Initialize boot time
globalBootTime = UTCNow()
globalEndpoints = mustGetPoolEndpoints(erasureDirs...)
newAllSubsystems()
initAllSubsystems(ctx, objLayer)
// Setup admin mgmt REST API handlers.
adminRouter := mux.NewRouter()
registerAdminRouter(adminRouter, true, true)
return &adminErasureTestBed{
erasureDirs: erasureDirs,
objLayer: objLayer,
router: adminRouter,
}, nil
}
// TearDown - method that resets the test bed for subsequent unit
// tests to start afresh.
func (atb *adminErasureTestBed) TearDown() {
removeRoots(atb.erasureDirs)
resetTestGlobals()
}
// initTestObjLayer - Helper function to initialize an Erasure-based object
// layer and set globalObjectAPI.
func initTestErasureObjLayer(ctx context.Context) (ObjectLayer, []string, error) {
erasureDirs, err := getRandomDisks(16)
if err != nil {
return nil, nil, err
}
endpoints := mustGetPoolEndpoints(erasureDirs...)
globalPolicySys = NewPolicySys()
objLayer, err := newErasureServerPools(ctx, endpoints)
if err != nil {
return nil, nil, err
}
// Make objLayer available to all internal services via globalObjectAPI.
globalObjLayerMutex.Lock()
globalObjectAPI = objLayer
globalObjLayerMutex.Unlock()
return objLayer, erasureDirs, nil
}
// cmdType - Represents different service subcomands like status, stop
// and restart.
type cmdType int
const (
restartCmd cmdType = iota
stopCmd
)
// toServiceSignal - Helper function that translates a given cmdType
// value to its corresponding serviceSignal value.
func (c cmdType) toServiceSignal() serviceSignal {
switch c {
case restartCmd:
return serviceRestart
case stopCmd:
return serviceStop
}
return serviceRestart
}
func (c cmdType) toServiceAction() madmin.ServiceAction {
switch c {
case restartCmd:
return madmin.ServiceActionRestart
case stopCmd:
return madmin.ServiceActionStop
}
return madmin.ServiceActionRestart
}
// testServiceSignalReceiver - Helper function that simulates a
// go-routine waiting on service signal.
func testServiceSignalReceiver(cmd cmdType, t *testing.T) {
expectedCmd := cmd.toServiceSignal()
serviceCmd := <-globalServiceSignalCh
if serviceCmd != expectedCmd {
t.Errorf("Expected service command %v but received %v", expectedCmd, serviceCmd)
}
}
// getServiceCmdRequest - Constructs a management REST API request for service
// subcommands for a given cmdType value.
func getServiceCmdRequest(cmd cmdType, cred auth.Credentials) (*http.Request, error) {
queryVal := url.Values{}
queryVal.Set("action", string(cmd.toServiceAction()))
resource := adminPathPrefix + adminAPIVersionPrefix + "/service?" + queryVal.Encode()
req, err := newTestRequest(http.MethodPost, resource, 0, nil)
if err != nil {
return nil, err
}
// management REST API uses signature V4 for authentication.
err = signRequestV4(req, cred.AccessKey, cred.SecretKey)
if err != nil {
return nil, err
}
return req, nil
}
// testServicesCmdHandler - parametrizes service subcommand tests on
// cmdType value.
func testServicesCmdHandler(cmd cmdType, t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
adminTestBed, err := prepareAdminErasureTestBed(ctx)
if err != nil {
t.Fatal("Failed to initialize a single node Erasure backend for admin handler tests.")
}
defer adminTestBed.TearDown()
// Initialize admin peers to make admin RPC calls. Note: In a
// single node setup, this degenerates to a simple function
// call under the hood.
globalMinioAddr = "127.0.0.1:9000"
var wg sync.WaitGroup
// Setting up a go routine to simulate ServerRouter's
// handleServiceSignals for stop and restart commands.
if cmd == restartCmd {
wg.Add(1)
go func() {
defer wg.Done()
testServiceSignalReceiver(cmd, t)
}()
}
credentials := globalActiveCred
req, err := getServiceCmdRequest(cmd, credentials)
if err != nil {
t.Fatalf("Failed to build service status request %v", err)
}
rec := httptest.NewRecorder()
adminTestBed.router.ServeHTTP(rec, req)
if rec.Code != http.StatusOK {
resp, _ := ioutil.ReadAll(rec.Body)
t.Errorf("Expected to receive %d status code but received %d. Body (%s)",
http.StatusOK, rec.Code, string(resp))
}
// Wait until testServiceSignalReceiver() called in a goroutine quits.
wg.Wait()
}
// Test for service restart management REST API.
func TestServiceRestartHandler(t *testing.T) {
testServicesCmdHandler(restartCmd, t)
}
// buildAdminRequest - helper function to build an admin API request.
func buildAdminRequest(queryVal url.Values, method, path string,
contentLength int64, bodySeeker io.ReadSeeker) (*http.Request, error) {
req, err := newTestRequest(method,
adminPathPrefix+adminAPIVersionPrefix+path+"?"+queryVal.Encode(),
contentLength, bodySeeker)
if err != nil {
return nil, err
}
cred := globalActiveCred
err = signRequestV4(req, cred.AccessKey, cred.SecretKey)
if err != nil {
return nil, err
}
return req, nil
}
func TestAdminServerInfo(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
adminTestBed, err := prepareAdminErasureTestBed(ctx)
if err != nil {
t.Fatal("Failed to initialize a single node Erasure backend for admin handler tests.")
}
defer adminTestBed.TearDown()
// Initialize admin peers to make admin RPC calls.
globalMinioAddr = "127.0.0.1:9000"
// Prepare query params for set-config mgmt REST API.
queryVal := url.Values{}
queryVal.Set("info", "")
req, err := buildAdminRequest(queryVal, http.MethodGet, "/info", 0, nil)
if err != nil {
t.Fatalf("Failed to construct get-config object request - %v", err)
}
rec := httptest.NewRecorder()
adminTestBed.router.ServeHTTP(rec, req)
if rec.Code != http.StatusOK {
t.Errorf("Expected to succeed but failed with %d", rec.Code)
}
results := madmin.InfoMessage{}
err = json.NewDecoder(rec.Body).Decode(&results)
if err != nil {
t.Fatalf("Failed to decode set config result json %v", err)
}
if results.Region != globalMinioDefaultRegion {
t.Errorf("Expected %s, got %s", globalMinioDefaultRegion, results.Region)
}
}
// TestToAdminAPIErrCode - test for toAdminAPIErrCode helper function.
func TestToAdminAPIErrCode(t *testing.T) {
testCases := []struct {
err error
expectedAPIErr APIErrorCode
}{
// 1. Server not in quorum.
{
err: errErasureWriteQuorum,
expectedAPIErr: ErrAdminConfigNoQuorum,
},
// 2. No error.
{
err: nil,
expectedAPIErr: ErrNone,
},
// 3. Non-admin API specific error.
{
err: errDiskNotFound,
expectedAPIErr: toAPIErrorCode(GlobalContext, errDiskNotFound),
},
}
for i, test := range testCases {
actualErr := toAdminAPIErrCode(GlobalContext, test.err)
if actualErr != test.expectedAPIErr {
t.Errorf("Test %d: Expected %v but received %v",
i+1, test.expectedAPIErr, actualErr)
}
}
}
func TestExtractHealInitParams(t *testing.T) {
mkParams := func(clientToken string, forceStart, forceStop bool) url.Values {
v := url.Values{}
if clientToken != "" {
v.Add(mgmtClientToken, clientToken)
}
if forceStart {
v.Add(mgmtForceStart, "")
}
if forceStop {
v.Add(mgmtForceStop, "")
}
return v
}
qParmsArr := []url.Values{
// Invalid cases
mkParams("", true, true),
mkParams("111", true, true),
mkParams("111", true, false),
mkParams("111", false, true),
// Valid cases follow
mkParams("", true, false),
mkParams("", false, true),
mkParams("", false, false),
mkParams("111", false, false),
}
varsArr := []map[string]string{
// Invalid cases
{mgmtPrefix: "objprefix"},
// Valid cases
{},
{mgmtBucket: "bucket"},
{mgmtBucket: "bucket", mgmtPrefix: "objprefix"},
}
// Body is always valid - we do not test JSON decoding.
body := `{"recursive": false, "dryRun": true, "remove": false, "scanMode": 0}`
// Test all combinations!
for pIdx, parms := range qParmsArr {
for vIdx, vars := range varsArr {
_, err := extractHealInitParams(vars, parms, bytes.NewReader([]byte(body)))
isErrCase := false
if pIdx < 4 || vIdx < 1 {
isErrCase = true
}
if err != ErrNone && !isErrCase {
t.Errorf("Got unexpected error: %v %v %v", pIdx, vIdx, err)
} else if err == ErrNone && isErrCase {
t.Errorf("Got no error but expected one: %v %v", pIdx, vIdx)
}
}
}
}