minio/cmd/lock-instrument_test.go
2017-10-05 12:25:45 -07:00

654 lines
25 KiB
Go

/*
* Minio Cloud Storage, (C) 2016, 2017 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 "testing"
type lockStateCase struct {
volume string
path string
lockSource string
opsID string
readLock bool // lock type.
setBlocked bool // initialize the initial state to blocked.
expectedErr error
// Expected global lock stats.
expectedLockStatus statusType // Status of the lock Blocked/Running.
expectedGlobalLockCount int // Total number of locks held across the system, includes blocked + held locks.
expectedBlockedLockCount int // Total blocked lock across the system.
expectedRunningLockCount int // Total successfully held locks (non-blocking).
// Expected lock status for given <volume, path> pair.
expectedVolPathLockCount int // Total locks held for given <volume,path> pair, includes blocked locks.
expectedVolPathRunningCount int // Total succcesfully held locks for given <volume, path> pair.
expectedVolPathBlockCount int // Total locks blocked on the given <volume, path> pair.
}
// Read entire state of the locks in the system and return.
func getSystemLockState() (SystemLockState, error) {
globalNSMutex.lockMapMutex.Lock()
defer globalNSMutex.lockMapMutex.Unlock()
lockState := SystemLockState{}
lockState.TotalBlockedLocks = globalNSMutex.counters.blocked
lockState.TotalLocks = globalNSMutex.counters.total
lockState.TotalAcquiredLocks = globalNSMutex.counters.granted
for param, debugLock := range globalNSMutex.debugLockMap {
volLockInfo := VolumeLockInfo{}
volLockInfo.Bucket = param.volume
volLockInfo.Object = param.path
volLockInfo.LocksOnObject = debugLock.counters.total
volLockInfo.TotalBlockedLocks = debugLock.counters.blocked
volLockInfo.LocksAcquiredOnObject = debugLock.counters.granted
for opsID, lockInfo := range debugLock.lockInfo {
volLockInfo.LockDetailsOnObject = append(volLockInfo.LockDetailsOnObject, OpsLockState{
OperationID: opsID,
LockSource: lockInfo.lockSource,
LockType: lockInfo.lType,
Status: lockInfo.status,
Since: lockInfo.since,
})
}
lockState.LocksInfoPerObject = append(lockState.LocksInfoPerObject, volLockInfo)
}
return lockState, nil
}
// Asserts the lock counter from the global globalNSMutex inmemory lock with the expected one.
func verifyGlobalLockStats(l lockStateCase, t *testing.T, testNum int) {
globalNSMutex.lockMapMutex.Lock()
// Verifying the lock stats.
if globalNSMutex.counters.total != int64(l.expectedGlobalLockCount) {
t.Errorf("Test %d: Expected the global lock counter to be %v, but got %v", testNum, int64(l.expectedGlobalLockCount),
globalNSMutex.counters.total)
}
// verify the count for total blocked locks.
if globalNSMutex.counters.blocked != int64(l.expectedBlockedLockCount) {
t.Errorf("Test %d: Expected the total blocked lock counter to be %v, but got %v", testNum, int64(l.expectedBlockedLockCount),
globalNSMutex.counters.blocked)
}
// verify the count for total running locks.
if globalNSMutex.counters.granted != int64(l.expectedRunningLockCount) {
t.Errorf("Test %d: Expected the total running lock counter to be %v, but got %v", testNum, int64(l.expectedRunningLockCount),
globalNSMutex.counters.granted)
}
globalNSMutex.lockMapMutex.Unlock()
// Verifying again with the JSON response of the lock info.
// Verifying the lock stats.
sysLockState, err := getSystemLockState()
if err != nil {
t.Fatalf("Obtaining lock info failed with <ERROR> %s", err)
}
if sysLockState.TotalLocks != int64(l.expectedGlobalLockCount) {
t.Errorf("Test %d: Expected the global lock counter to be %v, but got %v", testNum, int64(l.expectedGlobalLockCount),
sysLockState.TotalLocks)
}
// verify the count for total blocked locks.
if sysLockState.TotalBlockedLocks != int64(l.expectedBlockedLockCount) {
t.Errorf("Test %d: Expected the total blocked lock counter to be %v, but got %v", testNum, int64(l.expectedBlockedLockCount),
sysLockState.TotalBlockedLocks)
}
// verify the count for total running locks.
if sysLockState.TotalAcquiredLocks != int64(l.expectedRunningLockCount) {
t.Errorf("Test %d: Expected the total running lock counter to be %v, but got %v", testNum, int64(l.expectedRunningLockCount),
sysLockState.TotalAcquiredLocks)
}
}
// Verify the lock counter for entries of given <volume, path> pair.
func verifyLockStats(l lockStateCase, t *testing.T, testNum int) {
globalNSMutex.lockMapMutex.Lock()
defer globalNSMutex.lockMapMutex.Unlock()
param := nsParam{l.volume, l.path}
// Verify the total locks (blocked+running) for given <vol,path> pair.
if globalNSMutex.debugLockMap[param].counters.total != int64(l.expectedVolPathLockCount) {
t.Errorf("Test %d: Expected the total lock count for volume: \"%s\", path: \"%s\" to be %v, but got %v", testNum,
param.volume, param.path, int64(l.expectedVolPathLockCount), globalNSMutex.debugLockMap[param].counters.total)
}
// Verify the total running locks for given <volume, path> pair.
if globalNSMutex.debugLockMap[param].counters.granted != int64(l.expectedVolPathRunningCount) {
t.Errorf("Test %d: Expected the total running locks for volume: \"%s\", path: \"%s\" to be %v, but got %v", testNum, param.volume, param.path,
int64(l.expectedVolPathRunningCount), globalNSMutex.debugLockMap[param].counters.granted)
}
// Verify the total blocked locks for givne <volume, path> pair.
if globalNSMutex.debugLockMap[param].counters.blocked != int64(l.expectedVolPathBlockCount) {
t.Errorf("Test %d: Expected the total blocked locks for volume: \"%s\", path: \"%s\" to be %v, but got %v", testNum, param.volume, param.path,
int64(l.expectedVolPathBlockCount), globalNSMutex.debugLockMap[param].counters.blocked)
}
}
// verifyLockState - function which asserts the expected lock info in the system with the actual values in the globalNSMutex.
func verifyLockState(l lockStateCase, t *testing.T, testNum int) {
param := nsParam{l.volume, l.path}
verifyGlobalLockStats(l, t, testNum)
globalNSMutex.lockMapMutex.Lock()
// Verifying the lock statuS fields.
if debugLockMap, ok := globalNSMutex.debugLockMap[param]; ok {
if lockInfo, ok := debugLockMap.lockInfo[l.opsID]; ok {
// Validating the lock type filed in the debug lock information.
if l.readLock {
if lockInfo.lType != debugRLockStr {
t.Errorf("Test case %d: Expected the lock type in the lock debug info to be \"%s\"", testNum, debugRLockStr)
}
} else {
if lockInfo.lType != debugWLockStr {
t.Errorf("Test case %d: Expected the lock type in the lock debug info to be \"%s\"", testNum, debugWLockStr)
}
}
// // validating the lock origin.
// if l.lockSource != lockInfo.lockSource {
// t.Fatalf("Test %d: Expected the lock origin info to be \"%s\", but got \"%s\"", testNum, l.lockSource, lockInfo.lockSource)
// }
// validating the status of the lock.
if lockInfo.status != l.expectedLockStatus {
t.Errorf("Test %d: Expected the status of the lock to be \"%s\", but got \"%s\"", testNum, l.expectedLockStatus, lockInfo.status)
}
} else {
// Stop the tests if lock debug entry for given <volume, path> pair is not found.
t.Errorf("Test case %d: Expected an debug lock entry for opsID \"%s\"", testNum, l.opsID)
}
} else {
// To change the status the entry for given <volume, path> should exist in the lock info struct.
t.Errorf("Test case %d: Debug lock entry for volume: %s, path: %s doesn't exist", testNum, param.volume, param.path)
}
// verifyLockStats holds its own lock.
globalNSMutex.lockMapMutex.Unlock()
// verify the lock count.
verifyLockStats(l, t, testNum)
}
func TestGetOpsID(t *testing.T) {
// Ensure that it returns an alphanumeric result of length 16.
var id = getOpsID()
if len(id) != 16 {
t.Fail()
}
var e rune
for _, char := range id {
e = rune(char)
// Ensure that it is alphanumeric, in this case, between 0-9 and A-Z.
if !(('0' <= e && e <= '9') || ('A' <= e && e <= 'Z')) {
t.Fail()
}
}
}
// TestNewDebugLockInfoPerVolumePath - Validates the values initialized by newDebugLockInfoPerVolumePath().
func TestNewDebugLockInfoPerVolumePath(t *testing.T) {
lockInfo := &debugLockInfoPerVolumePath{
lockInfo: make(map[string]debugLockInfo),
counters: &lockStat{},
}
if lockInfo.counters.total != 0 {
t.Errorf("Expected initial reference value of total locks to be 0, got %d", lockInfo.counters.total)
}
if lockInfo.counters.blocked != 0 {
t.Errorf("Expected initial reference of blocked locks to be 0, got %d", lockInfo.counters.blocked)
}
if lockInfo.counters.granted != 0 {
t.Errorf("Expected initial reference value of held locks to be 0, got %d", lockInfo.counters.granted)
}
}
// TestNsLockMapStatusBlockedToRunning - Validates the function for changing the lock state from blocked to running.
func TestNsLockMapStatusBlockedToRunning(t *testing.T) {
testCases := []struct {
volume string
path string
lockSource string
opsID string
readLock bool // Read lock type.
setBlocked bool // Initialize the initial state to blocked.
expectedErr error
}{
// Test case - 1.
{
volume: "my-bucket",
path: "my-object",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "abcd1234",
readLock: true,
setBlocked: true,
// expected metrics.
expectedErr: nil,
},
// Test case - 2.
// No entry for <volume, path> pair.
// So an attempt to change the state of the lock from `Blocked`->`Running` should fail.
{
volume: "my-bucket",
path: "my-object-2",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "abcd1234",
readLock: false,
setBlocked: false,
// expected metrics.
expectedErr: LockInfoVolPathMissing{"my-bucket", "my-object-2"},
},
// Test case - 3.
// Entry for the given operationID doesn't exist in the lock state info.
{
volume: "my-bucket",
path: "my-object",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "ops-Id-not-registered",
readLock: true,
setBlocked: false,
// expected metrics.
expectedErr: LockInfoOpsIDNotFound{"my-bucket", "my-object", "ops-Id-not-registered"},
},
// Test case - 4.
// Test case with non-existent lock origin.
{
volume: "my-bucket",
path: "my-object",
lockSource: "Bad Origin",
opsID: "abcd1234",
readLock: true,
setBlocked: false,
// expected metrics.
expectedErr: LockInfoOriginMismatch{"my-bucket", "my-object", "abcd1234", "Bad Origin"},
},
// Test case - 5.
// Test case with write lock.
{
volume: "my-bucket",
path: "my-object",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "abcd1234",
readLock: false,
setBlocked: true,
// expected metrics.
expectedErr: nil,
},
}
param := nsParam{testCases[0].volume, testCases[0].path}
// Testing before the initialization done.
// Since the data structures for
actualErr := globalNSMutex.statusBlockedToRunning(param, testCases[0].lockSource,
testCases[0].opsID, testCases[0].readLock)
expectedErr := LockInfoVolPathMissing{testCases[0].volume, testCases[0].path}
if errorCause(actualErr) != expectedErr {
t.Fatalf("Errors mismatch: Expected \"%s\", got \"%s\"", expectedErr, actualErr)
}
globalNSMutex = &nsLockMap{
// entries of <volume,path> -> stateInfo of locks, for instrumentation purpose.
debugLockMap: make(map[nsParam]*debugLockInfoPerVolumePath),
lockMap: make(map[nsParam]*nsLock),
}
// Setting the lock info the be `nil`.
globalNSMutex.debugLockMap[param] = &debugLockInfoPerVolumePath{
lockInfo: nil, // setting the lockinfo to nil.
counters: &lockStat{},
}
actualErr = globalNSMutex.statusBlockedToRunning(param, testCases[0].lockSource,
testCases[0].opsID, testCases[0].readLock)
expectedOpsErr := LockInfoOpsIDNotFound{testCases[0].volume, testCases[0].path, testCases[0].opsID}
if errorCause(actualErr) != expectedOpsErr {
t.Fatalf("Errors mismatch: Expected \"%s\", got \"%s\"", expectedOpsErr, actualErr)
}
// Next case: ase whether an attempt to change the state of the lock to "Running" done,
// but the initial state if already "Running". Such an attempt should fail
globalNSMutex.debugLockMap[param] = &debugLockInfoPerVolumePath{
lockInfo: make(map[string]debugLockInfo),
counters: &lockStat{},
}
// Setting the status of the lock to be "Running".
// The initial state of the lock should set to "Blocked", otherwise its not possible to change the state from "Blocked" -> "Running".
globalNSMutex.debugLockMap[param].lockInfo[testCases[0].opsID] = debugLockInfo{
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
status: "Running", // State set to "Running". Should fail with `LockInfoStateNotBlocked`.
since: UTCNow(),
}
actualErr = globalNSMutex.statusBlockedToRunning(param, testCases[0].lockSource,
testCases[0].opsID, testCases[0].readLock)
expectedBlockErr := LockInfoStateNotBlocked{testCases[0].volume, testCases[0].path, testCases[0].opsID}
if errorCause(actualErr) != expectedBlockErr {
t.Fatalf("Errors mismatch: Expected: \"%s\", got: \"%s\"", expectedBlockErr, actualErr)
}
// initializing the locks.
initNSLock(false)
// Iterate over the cases and assert the result.
for i, testCase := range testCases {
param := nsParam{testCase.volume, testCase.path}
// status of the lock to be set to "Blocked", before setting Blocked->Running.
if testCase.setBlocked {
globalNSMutex.lockMapMutex.Lock()
err := globalNSMutex.statusNoneToBlocked(param, testCase.lockSource, testCase.opsID, testCase.readLock)
if err != nil {
t.Fatalf("Test %d: Initializing the initial state to Blocked failed <ERROR> %s", i+1, err)
}
globalNSMutex.lockMapMutex.Unlock()
}
// invoking the method under test.
actualErr = globalNSMutex.statusBlockedToRunning(param, testCase.lockSource, testCase.opsID, testCase.readLock)
if errorCause(actualErr) != testCase.expectedErr {
t.Fatalf("Test %d: Errors mismatch: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, actualErr)
}
// In case of no error proceed with validating the lock state information.
if actualErr == nil {
// debug entry for given <volume, path> pair should exist.
if debugLockMap, ok := globalNSMutex.debugLockMap[param]; ok {
if lockInfo, ok := debugLockMap.lockInfo[testCase.opsID]; ok {
// Validating the lock type filed in the debug lock information.
if testCase.readLock {
if lockInfo.lType != debugRLockStr {
t.Errorf("Test case %d: Expected the lock type in the lock debug info to be \"%s\"", i+1, debugRLockStr)
}
} else {
if lockInfo.lType != debugWLockStr {
t.Errorf("Test case %d: Expected the lock type in the lock debug info to be \"%s\"", i+1, debugWLockStr)
}
}
// validating the lock origin.
if testCase.lockSource != lockInfo.lockSource {
t.Errorf("Test %d: Expected the lock origin info to be \"%s\", but got \"%s\"", i+1, testCase.lockSource, lockInfo.lockSource)
}
// validating the status of the lock.
if lockInfo.status != runningStatus {
t.Errorf("Test %d: Expected the status of the lock to be \"%s\", but got \"%s\"", i+1, "Running", lockInfo.status)
}
} else {
// Stop the tests if lock debug entry for given <volume, path> pair is not found.
t.Fatalf("Test case %d: Expected an debug lock entry for opsID \"%s\"", i+1, testCase.opsID)
}
} else {
// To change the status the entry for given <volume, path> should exist in the lock info struct.
t.Fatalf("Test case %d: Debug lock entry for volume: %s, path: %s doesn't exist", i+1, param.volume, param.path)
}
}
}
}
// TestNsLockMapStatusNoneToBlocked - Validates the function for changing the lock state to blocked
func TestNsLockMapStatusNoneToBlocked(t *testing.T) {
testCases := []lockStateCase{
// Test case - 1.
{
volume: "my-bucket",
path: "my-object",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "abcd1234",
readLock: true,
// expected metrics.
expectedErr: nil,
expectedLockStatus: blockedStatus,
expectedGlobalLockCount: 1,
expectedRunningLockCount: 0,
expectedBlockedLockCount: 1,
expectedVolPathLockCount: 1,
expectedVolPathRunningCount: 0,
expectedVolPathBlockCount: 1,
},
// Test case - 2.
// No entry for <volume, path> pair.
// So an attempt to change the state of the lock from `Blocked`->`Running` should fail.
{
volume: "my-bucket",
path: "my-object-2",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "abcd1234",
readLock: false,
// expected metrics.
expectedErr: nil,
expectedLockStatus: blockedStatus,
expectedGlobalLockCount: 2,
expectedRunningLockCount: 0,
expectedBlockedLockCount: 2,
expectedVolPathLockCount: 1,
expectedVolPathRunningCount: 0,
expectedVolPathBlockCount: 1,
},
// Test case - 3.
// Entry for the given operationID doesn't exist in the lock state info.
// The entry should be created and relevant counters should be set.
{
volume: "my-bucket",
path: "my-object",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "ops-Id-not-registered",
readLock: true,
// expected metrics.
expectedErr: nil,
expectedLockStatus: "Blocked",
expectedGlobalLockCount: 3,
expectedRunningLockCount: 0,
expectedBlockedLockCount: 3,
expectedVolPathLockCount: 2,
expectedVolPathRunningCount: 0,
expectedVolPathBlockCount: 2,
},
}
// initializing the locks.
initNSLock(false)
param := nsParam{testCases[0].volume, testCases[0].path}
// Testing before the initialization done.
// Since the data structures for
actualErr := globalNSMutex.statusBlockedToRunning(param, testCases[0].lockSource,
testCases[0].opsID, testCases[0].readLock)
expectedErr := LockInfoVolPathMissing{testCases[0].volume, testCases[0].path}
if errorCause(actualErr) != expectedErr {
t.Fatalf("Errors mismatch: Expected \"%s\", got \"%s\"", expectedErr, actualErr)
}
// Iterate over the cases and assert the result.
for i, testCase := range testCases {
globalNSMutex.lockMapMutex.Lock()
param := nsParam{testCase.volume, testCase.path}
actualErr := globalNSMutex.statusNoneToBlocked(param, testCase.lockSource, testCase.opsID, testCase.readLock)
if actualErr != testCase.expectedErr {
t.Fatalf("Test %d: Errors mismatch: Expected: \"%s\", got: \"%s\"", i+1, testCase.expectedErr, actualErr)
}
globalNSMutex.lockMapMutex.Unlock()
if actualErr == nil {
verifyLockState(testCase, t, i+1)
}
}
}
// TestNsLockMapDeleteLockInfoEntryForOps - Validates the removal of entry for given Operational ID from the lock info.
func TestNsLockMapDeleteLockInfoEntryForOps(t *testing.T) {
testCases := []lockStateCase{
// Test case - 1.
{
volume: "my-bucket",
path: "my-object",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "abcd1234",
readLock: true,
// expected metrics.
},
}
// initializing the locks.
initNSLock(false)
// case - 1.
// Testing the case where delete lock info is attempted even before the lock is initialized.
param := nsParam{testCases[0].volume, testCases[0].path}
// Testing before the initialization done.
actualErr := globalNSMutex.deleteLockInfoEntryForOps(param, testCases[0].opsID)
expectedErr := LockInfoVolPathMissing{testCases[0].volume, testCases[0].path}
if errorCause(actualErr) != expectedErr {
t.Fatalf("Errors mismatch: Expected \"%s\", got \"%s\"", expectedErr, actualErr)
}
// Case - 2.
// Lock state is set to Running and then an attempt to delete the info for non-existent opsID done.
globalNSMutex.lockMapMutex.Lock()
err := globalNSMutex.statusNoneToBlocked(param, testCases[0].lockSource, testCases[0].opsID, testCases[0].readLock)
if err != nil {
t.Fatalf("Setting lock status to Blocked failed: <ERROR> %s", err)
}
globalNSMutex.lockMapMutex.Unlock()
err = globalNSMutex.statusBlockedToRunning(param, testCases[0].lockSource, testCases[0].opsID, testCases[0].readLock)
if err != nil {
t.Fatalf("Setting lock status to Running failed: <ERROR> %s", err)
}
actualErr = globalNSMutex.deleteLockInfoEntryForOps(param, "non-existent-OpsID")
expectedOpsIDErr := LockInfoOpsIDNotFound{param.volume, param.path, "non-existent-OpsID"}
if errorCause(actualErr) != expectedOpsIDErr {
t.Fatalf("Errors mismatch: Expected \"%s\", got \"%s\"", expectedOpsIDErr, actualErr)
}
// case - 4.
// Attempt to delete an registered entry is done.
// All metrics should be 0 after deleting the entry.
// Verify that the entry the opsID exists.
if debugLockMap, ok := globalNSMutex.debugLockMap[param]; ok {
if _, ok := debugLockMap.lockInfo[testCases[0].opsID]; !ok {
t.Fatalf("Entry for OpsID \"%s\" in <volume> %s, <path> %s should have existed. ", testCases[0].opsID, param.volume, param.path)
}
} else {
t.Fatalf("Entry for <volume> %s, <path> %s should have existed. ", param.volume, param.path)
}
actualErr = globalNSMutex.deleteLockInfoEntryForOps(param, testCases[0].opsID)
if actualErr != nil {
t.Fatalf("Expected the error to be <nil>, but got <ERROR> %s", actualErr)
}
// Verify that the entry for the opsId doesn't exists.
if debugLockMap, ok := globalNSMutex.debugLockMap[param]; ok {
if _, ok := debugLockMap.lockInfo[testCases[0].opsID]; ok {
t.Fatalf("The entry for opsID \"%s\" should have been deleted", testCases[0].opsID)
}
} else {
t.Fatalf("Entry for <volume> %s, <path> %s should have existed. ", param.volume, param.path)
}
if globalNSMutex.counters.granted != 0 {
t.Errorf("Expected the count of total running locks to be %v, but got %v", 0, globalNSMutex.counters.granted)
}
if globalNSMutex.counters.blocked != 0 {
t.Errorf("Expected the count of total blocked locks to be %v, but got %v", 0, globalNSMutex.counters.blocked)
}
if globalNSMutex.counters.total != 0 {
t.Errorf("Expected the count of all locks to be %v, but got %v", 0, globalNSMutex.counters.total)
}
}
// TestNsLockMapDeleteLockInfoEntryForVolumePath - Tests validate the logic for removal
// of entry for given <volume, path> pair from lock info.
func TestNsLockMapDeleteLockInfoEntryForVolumePath(t *testing.T) {
testCases := []lockStateCase{
// Test case - 1.
{
volume: "my-bucket",
path: "my-object",
lockSource: "/home/vadmeste/work/go/src/github.com/minio/minio/xl-v1-object.go:683 +0x2a",
opsID: "abcd1234",
readLock: true,
// expected metrics.
},
}
// initializing the locks.
initNSLock(false)
// case - 1.
// Case where an attempt to delete the entry for non-existent <volume, path> pair is done.
// Set the status of the lock to blocked and then to running.
param := nsParam{testCases[0].volume, testCases[0].path}
actualErr := globalNSMutex.deleteLockInfoEntryForVolumePath(param)
expectedNilErr := LockInfoVolPathMissing{param.volume, param.path}
if errorCause(actualErr) != expectedNilErr {
t.Fatalf("Errors mismatch: Expected \"%s\", got \"%s\"", expectedNilErr, actualErr)
}
// case - 2.
// Attempt to delete an registered entry is done.
// All metrics should be 0 after deleting the entry.
// Registering the entry first.
globalNSMutex.lockMapMutex.Lock()
err := globalNSMutex.statusNoneToBlocked(param, testCases[0].lockSource, testCases[0].opsID, testCases[0].readLock)
if err != nil {
t.Fatalf("Setting lock status to Blocked failed: <ERROR> %s", err)
}
globalNSMutex.lockMapMutex.Unlock()
err = globalNSMutex.statusBlockedToRunning(param, testCases[0].lockSource, testCases[0].opsID, testCases[0].readLock)
if err != nil {
t.Fatalf("Setting lock status to Running failed: <ERROR> %s", err)
}
// Verify that the entry the for given <volume, path> exists.
if _, ok := globalNSMutex.debugLockMap[param]; !ok {
t.Fatalf("Entry for <volume> %s, <path> %s should have existed.", param.volume, param.path)
}
// first delete the entry for the operation ID.
_ = globalNSMutex.deleteLockInfoEntryForOps(param, testCases[0].opsID)
actualErr = globalNSMutex.deleteLockInfoEntryForVolumePath(param)
if actualErr != nil {
t.Fatalf("Expected the error to be <nil>, but got <ERROR> %s", actualErr)
}
// Verify that the entry for the opsId doesn't exists.
if _, ok := globalNSMutex.debugLockMap[param]; ok {
t.Fatalf("Entry for <volume> %s, <path> %s should have been deleted. ", param.volume, param.path)
}
// The lock count values should be 0.
if globalNSMutex.counters.granted != 0 {
t.Errorf("Expected the count of total running locks to be %v, but got %v", 0, globalNSMutex.counters.granted)
}
if globalNSMutex.counters.blocked != 0 {
t.Errorf("Expected the count of total blocked locks to be %v, but got %v", 0, globalNSMutex.counters.blocked)
}
if globalNSMutex.counters.total != 0 {
t.Errorf("Expected the count of all locks to be %v, but got %v", 0, globalNSMutex.counters.total)
}
}