minio/cmd/lock-rpc-server_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 (
"net/url"
"runtime"
"sync"
"testing"
"time"
)
// Helper function to test equality of locks (without taking timing info into account)
func testLockEquality(lriLeft, lriRight []lockRequesterInfo) bool {
if len(lriLeft) != len(lriRight) {
return false
}
for i := 0; i < len(lriLeft); i++ {
if lriLeft[i].writer != lriRight[i].writer ||
lriLeft[i].node != lriRight[i].node ||
lriLeft[i].rpcPath != lriRight[i].rpcPath ||
lriLeft[i].uid != lriRight[i].uid {
return false
}
}
return true
}
// Helper function to create a lock server for testing
func createLockTestServer(t *testing.T) (string, *lockServer, string) {
testPath, err := newTestConfig("us-east-1")
if err != nil {
t.Fatalf("unable initialize config file, %s", err)
}
jwt, err := newJWT(defaultJWTExpiry)
if err != nil {
t.Fatalf("unable to get new JWT, %s", err)
}
err = jwt.Authenticate(serverConfig.GetCredential().AccessKeyID, serverConfig.GetCredential().SecretAccessKey)
if err != nil {
t.Fatalf("unable for JWT to authenticate, %s", err)
}
token, err := jwt.GenerateToken(serverConfig.GetCredential().AccessKeyID)
if err != nil {
t.Fatalf("unable for JWT to generate token, %s", err)
}
locker := &lockServer{
rpcPath: "rpc-path",
mutex: sync.Mutex{},
lockMap: make(map[string][]lockRequesterInfo),
}
return testPath, locker, token
}
// Test Lock functionality
func TestLockRpcServerLock(t *testing.T) {
timestamp := time.Now().UTC()
testPath, locker, token := createLockTestServer(t)
defer removeAll(testPath)
la := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "0123-4567",
}
// Claim a lock
var result bool
err := locker.Lock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else {
if !result {
t.Errorf("Expected %#v, got %#v", true, result)
} else {
gotLri, _ := locker.lockMap["name"]
expectedLri := []lockRequesterInfo{
{
writer: true,
node: "node",
rpcPath: "rpc-path",
uid: "0123-4567",
},
}
if !testLockEquality(expectedLri, gotLri) {
t.Errorf("Expected %#v, got %#v", expectedLri, gotLri)
}
}
}
// Try to claim same lock again (will fail)
la2 := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "89ab-cdef",
}
err = locker.Lock(&la2, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else {
if result {
t.Errorf("Expected %#v, got %#v", false, result)
}
}
}
// Test Unlock functionality
func TestLockRpcServerUnlock(t *testing.T) {
timestamp := time.Now().UTC()
testPath, locker, token := createLockTestServer(t)
defer removeAll(testPath)
la := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "0123-4567",
}
// First test return of error when attempting to unlock a lock that does not exist
var result bool
err := locker.Unlock(&la, &result)
if err == nil {
t.Errorf("Expected error, got %#v", nil)
}
// Create lock (so that we can release)
err = locker.Lock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else if !result {
t.Errorf("Expected %#v, got %#v", true, result)
}
// Finally test successful release of lock
err = locker.Unlock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else {
if !result {
t.Errorf("Expected %#v, got %#v", true, result)
} else {
gotLri, _ := locker.lockMap["name"]
expectedLri := []lockRequesterInfo(nil)
if !testLockEquality(expectedLri, gotLri) {
t.Errorf("Expected %#v, got %#v", expectedLri, gotLri)
}
}
}
}
// Test RLock functionality
func TestLockRpcServerRLock(t *testing.T) {
timestamp := time.Now().UTC()
testPath, locker, token := createLockTestServer(t)
defer removeAll(testPath)
la := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "0123-4567",
}
// Claim a lock
var result bool
err := locker.RLock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else {
if !result {
t.Errorf("Expected %#v, got %#v", true, result)
} else {
gotLri, _ := locker.lockMap["name"]
expectedLri := []lockRequesterInfo{
{
writer: false,
node: "node",
rpcPath: "rpc-path",
uid: "0123-4567",
},
}
if !testLockEquality(expectedLri, gotLri) {
t.Errorf("Expected %#v, got %#v", expectedLri, gotLri)
}
}
}
// Try to claim same again (will succeed)
la2 := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "89ab-cdef",
}
err = locker.RLock(&la2, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else {
if !result {
t.Errorf("Expected %#v, got %#v", true, result)
}
}
}
// Test RUnlock functionality
func TestLockRpcServerRUnlock(t *testing.T) {
timestamp := time.Now().UTC()
testPath, locker, token := createLockTestServer(t)
defer removeAll(testPath)
la := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "0123-4567",
}
// First test return of error when attempting to unlock a read-lock that does not exist
var result bool
err := locker.Unlock(&la, &result)
if err == nil {
t.Errorf("Expected error, got %#v", nil)
}
// Create first lock ... (so that we can release)
err = locker.RLock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else if !result {
t.Errorf("Expected %#v, got %#v", true, result)
}
la2 := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "89ab-cdef",
}
// ... and create a second lock on same resource
err = locker.RLock(&la2, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else if !result {
t.Errorf("Expected %#v, got %#v", true, result)
}
// Test successful release of first read lock
err = locker.RUnlock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else {
if !result {
t.Errorf("Expected %#v, got %#v", true, result)
} else {
gotLri, _ := locker.lockMap["name"]
expectedLri := []lockRequesterInfo{
{
writer: false,
node: "node",
rpcPath: "rpc-path",
uid: "89ab-cdef",
},
}
if !testLockEquality(expectedLri, gotLri) {
t.Errorf("Expected %#v, got %#v", expectedLri, gotLri)
}
}
}
// Finally test successful release of second (and last) read lock
err = locker.RUnlock(&la2, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else {
if !result {
t.Errorf("Expected %#v, got %#v", true, result)
} else {
gotLri, _ := locker.lockMap["name"]
expectedLri := []lockRequesterInfo(nil)
if !testLockEquality(expectedLri, gotLri) {
t.Errorf("Expected %#v, got %#v", expectedLri, gotLri)
}
}
}
}
// Test ForceUnlock functionality
func TestLockRpcServerForceUnlock(t *testing.T) {
timestamp := time.Now().UTC()
testPath, locker, token := createLockTestServer(t)
defer removeAll(testPath)
laForce := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "1234-5678",
}
// First test that UID should be empty
var result bool
err := locker.ForceUnlock(&laForce, &result)
if err == nil {
t.Errorf("Expected error, got %#v", nil)
}
// Then test force unlock of a lock that does not exist (not returning an error)
laForce.UID = ""
err = locker.ForceUnlock(&laForce, &result)
if err != nil {
t.Errorf("Expected no error, got %#v", err)
}
la := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "0123-4567",
}
// Create lock ... (so that we can force unlock)
err = locker.Lock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else if !result {
t.Errorf("Expected %#v, got %#v", true, result)
}
// Forcefully unlock the lock (not returning an error)
err = locker.ForceUnlock(&laForce, &result)
if err != nil {
t.Errorf("Expected no error, got %#v", err)
}
// Try to get lock again (should be granted)
err = locker.Lock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else if !result {
t.Errorf("Expected %#v, got %#v", true, result)
}
// Finally forcefully unlock the lock once again
err = locker.ForceUnlock(&laForce, &result)
if err != nil {
t.Errorf("Expected no error, got %#v", err)
}
}
// Test Expired functionality
func TestLockRpcServerExpired(t *testing.T) {
timestamp := time.Now().UTC()
testPath, locker, token := createLockTestServer(t)
defer removeAll(testPath)
la := LockArgs{
Name: "name",
Token: token,
Timestamp: timestamp,
Node: "node",
RPCPath: "rpc-path",
UID: "0123-4567",
}
// Unknown lock at server will return expired = true
var expired bool
err := locker.Expired(&la, &expired)
if err != nil {
t.Errorf("Expected no error, got %#v", err)
} else {
if !expired {
t.Errorf("Expected %#v, got %#v", true, expired)
}
}
// Create lock (so that we can test that it is not expired)
var result bool
err = locker.Lock(&la, &result)
if err != nil {
t.Errorf("Expected %#v, got %#v", nil, err)
} else if !result {
t.Errorf("Expected %#v, got %#v", true, result)
}
err = locker.Expired(&la, &expired)
if err != nil {
t.Errorf("Expected no error, got %#v", err)
} else {
if expired {
t.Errorf("Expected %#v, got %#v", false, expired)
}
}
}
// Test initialization of lock servers.
func TestLockServers(t *testing.T) {
if runtime.GOOS == "windows" {
return
}
globalMinioHost = ""
testCases := []struct {
isDistXL bool
srvCmdConfig serverCmdConfig
totalLockServers int
}{
// Test - 1 one lock server initialized.
{
isDistXL: true,
srvCmdConfig: serverCmdConfig{
endpoints: []*url.URL{{
Scheme: "http",
Host: "localhost:9000",
Path: "/mnt/disk1",
}, {
Scheme: "http",
Host: "1.1.1.2:9000",
Path: "/mnt/disk2",
}, {
Scheme: "http",
Host: "1.1.2.1:9000",
Path: "/mnt/disk3",
}, {
Scheme: "http",
Host: "1.1.2.2:9000",
Path: "/mnt/disk4",
}},
},
totalLockServers: 1,
},
// Test - 2 two servers possible.
{
isDistXL: true,
srvCmdConfig: serverCmdConfig{
endpoints: []*url.URL{{
Scheme: "http",
Host: "localhost:9000",
Path: "/mnt/disk1",
}, {
Scheme: "http",
Host: "localhost:9000",
Path: "/mnt/disk2",
}, {
Scheme: "http",
Host: "1.1.2.1:9000",
Path: "/mnt/disk3",
}, {
Scheme: "http",
Host: "1.1.2.2:9000",
Path: "/mnt/disk4",
}},
},
totalLockServers: 2,
},
}
// Validates lock server initialization.
for i, testCase := range testCases {
globalIsDistXL = testCase.isDistXL
lockServers := newLockServers(testCase.srvCmdConfig)
if len(lockServers) != testCase.totalLockServers {
t.Fatalf("Test %d: Expected total %d, got %d", i+1, testCase.totalLockServers, len(lockServers))
}
}
}