How to use String method of ctxerr Package

Best Go-testdeep code snippet using ctxerr.String

kube_docker_client.go

Source:kube_docker_client.go Github

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...229 var buf bytes.Buffer230 if err := json.NewEncoder(&buf).Encode(auth); err != nil {231 return "", err232 }233 return base64.URLEncoding.EncodeToString(buf.Bytes()), nil234}235// progress is a wrapper of dockermessage.JSONMessage with a lock protecting it.236type progress struct {237 sync.RWMutex238 // message stores the latest docker json message.239 message *dockermessage.JSONMessage240 // timestamp of the latest update.241 timestamp time.Time242}243func newProgress() *progress {244 return &progress{timestamp: time.Now()}245}246func (p *progress) set(msg *dockermessage.JSONMessage) {247 p.Lock()248 defer p.Unlock()249 p.message = msg250 p.timestamp = time.Now()251}252func (p *progress) get() (string, time.Time) {253 p.RLock()254 defer p.RUnlock()255 if p.message == nil {256 return "No progress", p.timestamp257 }258 // The following code is based on JSONMessage.Display259 var prefix string260 if p.message.ID != "" {261 prefix = fmt.Sprintf("%s: ", p.message.ID)262 }263 if p.message.Progress == nil {264 return fmt.Sprintf("%s%s", prefix, p.message.Status), p.timestamp265 }266 return fmt.Sprintf("%s%s %s", prefix, p.message.Status, p.message.Progress.String()), p.timestamp267}268// progressReporter keeps the newest image pulling progress and periodically report the newest progress.269type progressReporter struct {270 *progress271 image string272 cancel context.CancelFunc273 stopCh chan struct{}274 imagePullProgressDeadline time.Duration275}276// newProgressReporter creates a new progressReporter for specific image with specified reporting interval277func newProgressReporter(image string, cancel context.CancelFunc, imagePullProgressDeadline time.Duration) *progressReporter {278 return &progressReporter{279 progress: newProgress(),280 image: image,281 cancel: cancel,282 stopCh: make(chan struct{}),283 imagePullProgressDeadline: imagePullProgressDeadline,284 }285}286// start starts the progressReporter287func (p *progressReporter) start() {288 go func() {289 ticker := time.NewTicker(defaultImagePullingProgressReportInterval)290 defer ticker.Stop()291 for {292 // TODO(random-liu): Report as events.293 select {294 case <-ticker.C:295 progress, timestamp := p.progress.get()296 // If there is no progress for p.imagePullProgressDeadline, cancel the operation.297 if time.Since(timestamp) > p.imagePullProgressDeadline {298 klog.Errorf("Cancel pulling image %q because of no progress for %v, latest progress: %q", p.image, p.imagePullProgressDeadline, progress)299 p.cancel()300 return301 }302 klog.V(2).Infof("Pulling image %q: %q", p.image, progress)303 case <-p.stopCh:304 progress, _ := p.progress.get()305 klog.V(2).Infof("Stop pulling image %q: %q", p.image, progress)306 return307 }308 }309 }()310}311// stop stops the progressReporter312func (p *progressReporter) stop() {313 close(p.stopCh)314}315func (d *kubeDockerClient) PullImage(image string, auth dockertypes.AuthConfig, opts dockertypes.ImagePullOptions) error {316 // RegistryAuth is the base64 encoded credentials for the registry317 base64Auth, err := base64EncodeAuth(auth)318 if err != nil {319 return err320 }321 opts.RegistryAuth = base64Auth322 ctx, cancel := d.getCancelableContext()323 defer cancel()324 resp, err := d.client.ImagePull(ctx, image, opts)325 if err != nil {326 return err327 }328 defer resp.Close()329 reporter := newProgressReporter(image, cancel, d.imagePullProgressDeadline)330 reporter.start()331 defer reporter.stop()332 decoder := json.NewDecoder(resp)333 for {334 var msg dockermessage.JSONMessage335 err := decoder.Decode(&msg)336 if err == io.EOF {337 break338 }339 if err != nil {340 return err341 }342 if msg.Error != nil {343 return msg.Error344 }345 reporter.set(&msg)346 }347 return nil348}349func (d *kubeDockerClient) RemoveImage(image string, opts dockertypes.ImageRemoveOptions) ([]dockertypes.ImageDeleteResponseItem, error) {350 ctx, cancel := d.getTimeoutContext()351 defer cancel()352 resp, err := d.client.ImageRemove(ctx, image, opts)353 if ctxErr := contextError(ctx); ctxErr != nil {354 return nil, ctxErr355 }356 if dockerapi.IsErrNotFound(err) {357 return nil, ImageNotFoundError{ID: image}358 }359 return resp, err360}361func (d *kubeDockerClient) Logs(id string, opts dockertypes.ContainerLogsOptions, sopts StreamOptions) error {362 ctx, cancel := d.getCancelableContext()363 defer cancel()364 resp, err := d.client.ContainerLogs(ctx, id, opts)365 if ctxErr := contextError(ctx); ctxErr != nil {366 return ctxErr367 }368 if err != nil {369 return err370 }371 defer resp.Close()372 return d.redirectResponseToOutputStream(sopts.RawTerminal, sopts.OutputStream, sopts.ErrorStream, resp)373}374func (d *kubeDockerClient) Version() (*dockertypes.Version, error) {375 ctx, cancel := d.getTimeoutContext()376 defer cancel()377 resp, err := d.client.ServerVersion(ctx)378 if ctxErr := contextError(ctx); ctxErr != nil {379 return nil, ctxErr380 }381 if err != nil {382 return nil, err383 }384 return &resp, nil385}386func (d *kubeDockerClient) Info() (*dockertypes.Info, error) {387 ctx, cancel := d.getTimeoutContext()388 defer cancel()389 resp, err := d.client.Info(ctx)390 if ctxErr := contextError(ctx); ctxErr != nil {391 return nil, ctxErr392 }393 if err != nil {394 return nil, err395 }396 return &resp, nil397}398// TODO(random-liu): Add unit test for exec and attach functions, just like what go-dockerclient did.399func (d *kubeDockerClient) CreateExec(id string, opts dockertypes.ExecConfig) (*dockertypes.IDResponse, error) {400 ctx, cancel := d.getTimeoutContext()401 defer cancel()402 resp, err := d.client.ContainerExecCreate(ctx, id, opts)403 if ctxErr := contextError(ctx); ctxErr != nil {404 return nil, ctxErr405 }406 if err != nil {407 return nil, err408 }409 return &resp, nil410}411func (d *kubeDockerClient) StartExec(startExec string, opts dockertypes.ExecStartCheck, sopts StreamOptions) error {412 ctx, cancel := d.getCancelableContext()413 defer cancel()414 if opts.Detach {415 err := d.client.ContainerExecStart(ctx, startExec, opts)416 if ctxErr := contextError(ctx); ctxErr != nil {417 return ctxErr418 }419 return err420 }421 resp, err := d.client.ContainerExecAttach(ctx, startExec, dockertypes.ExecStartCheck{422 Detach: opts.Detach,423 Tty: opts.Tty,424 })425 if ctxErr := contextError(ctx); ctxErr != nil {426 return ctxErr427 }428 if err != nil {429 return err430 }431 defer resp.Close()432 if sopts.ExecStarted != nil {433 // Send a message to the channel indicating that the exec has started. This is needed so434 // interactive execs can handle resizing correctly - the request to resize the TTY has to happen435 // after the call to d.client.ContainerExecAttach, and because d.holdHijackedConnection below436 // blocks, we use sopts.ExecStarted to signal the caller that it's ok to resize.437 sopts.ExecStarted <- struct{}{}438 }439 return d.holdHijackedConnection(sopts.RawTerminal || opts.Tty, sopts.InputStream, sopts.OutputStream, sopts.ErrorStream, resp)440}441func (d *kubeDockerClient) InspectExec(id string) (*dockertypes.ContainerExecInspect, error) {442 ctx, cancel := d.getTimeoutContext()443 defer cancel()444 resp, err := d.client.ContainerExecInspect(ctx, id)445 if ctxErr := contextError(ctx); ctxErr != nil {446 return nil, ctxErr447 }448 if err != nil {449 return nil, err450 }451 return &resp, nil452}453func (d *kubeDockerClient) AttachToContainer(id string, opts dockertypes.ContainerAttachOptions, sopts StreamOptions) error {454 ctx, cancel := d.getCancelableContext()455 defer cancel()456 resp, err := d.client.ContainerAttach(ctx, id, opts)457 if ctxErr := contextError(ctx); ctxErr != nil {458 return ctxErr459 }460 if err != nil {461 return err462 }463 defer resp.Close()464 return d.holdHijackedConnection(sopts.RawTerminal, sopts.InputStream, sopts.OutputStream, sopts.ErrorStream, resp)465}466func (d *kubeDockerClient) ResizeExecTTY(id string, height, width uint) error {467 ctx, cancel := d.getCancelableContext()468 defer cancel()469 return d.client.ContainerExecResize(ctx, id, dockertypes.ResizeOptions{470 Height: height,471 Width: width,472 })473}474func (d *kubeDockerClient) ResizeContainerTTY(id string, height, width uint) error {475 ctx, cancel := d.getCancelableContext()476 defer cancel()477 return d.client.ContainerResize(ctx, id, dockertypes.ResizeOptions{478 Height: height,479 Width: width,480 })481}482// GetContainerStats is currently only used for Windows container stats483func (d *kubeDockerClient) GetContainerStats(id string) (*dockertypes.StatsJSON, error) {484 ctx, cancel := d.getCancelableContext()485 defer cancel()486 response, err := d.client.ContainerStats(ctx, id, false)487 if err != nil {488 return nil, err489 }490 dec := json.NewDecoder(response.Body)491 var stats dockertypes.StatsJSON492 err = dec.Decode(&stats)493 if err != nil {494 return nil, err495 }496 defer response.Body.Close()497 return &stats, nil498}499// redirectResponseToOutputStream redirect the response stream to stdout and stderr. When tty is true, all stream will500// only be redirected to stdout.501func (d *kubeDockerClient) redirectResponseToOutputStream(tty bool, outputStream, errorStream io.Writer, resp io.Reader) error {502 if outputStream == nil {503 outputStream = ioutil.Discard504 }505 if errorStream == nil {506 errorStream = ioutil.Discard507 }508 var err error509 if tty {510 _, err = io.Copy(outputStream, resp)511 } else {512 _, err = dockerstdcopy.StdCopy(outputStream, errorStream, resp)513 }514 return err515}516// holdHijackedConnection hold the HijackedResponse, redirect the inputStream to the connection, and redirect the response517// stream to stdout and stderr. NOTE: If needed, we could also add context in this function.518func (d *kubeDockerClient) holdHijackedConnection(tty bool, inputStream io.Reader, outputStream, errorStream io.Writer, resp dockertypes.HijackedResponse) error {519 receiveStdout := make(chan error)520 if outputStream != nil || errorStream != nil {521 go func() {522 receiveStdout <- d.redirectResponseToOutputStream(tty, outputStream, errorStream, resp.Reader)523 }()524 }525 stdinDone := make(chan struct{})526 go func() {527 if inputStream != nil {528 io.Copy(resp.Conn, inputStream)529 }530 resp.CloseWrite()531 close(stdinDone)532 }()533 select {534 case err := <-receiveStdout:535 return err536 case <-stdinDone:537 if outputStream != nil || errorStream != nil {538 return <-receiveStdout539 }540 }541 return nil542}543// getCancelableContext returns a new cancelable context. For long running requests without timeout, we use cancelable544// context to avoid potential resource leak, although the current implementation shouldn't leak resource.545func (d *kubeDockerClient) getCancelableContext() (context.Context, context.CancelFunc) {546 return context.WithCancel(context.Background())547}548// getTimeoutContext returns a new context with default request timeout549func (d *kubeDockerClient) getTimeoutContext() (context.Context, context.CancelFunc) {550 return context.WithTimeout(context.Background(), d.timeout)551}552// getCustomTimeoutContext returns a new context with a specific request timeout553func (d *kubeDockerClient) getCustomTimeoutContext(timeout time.Duration) (context.Context, context.CancelFunc) {554 // Pick the larger of the two555 if d.timeout > timeout {556 timeout = d.timeout557 }558 return context.WithTimeout(context.Background(), timeout)559}560// contextError checks the context, and returns error if the context is timeout.561func contextError(ctx context.Context) error {562 if ctx.Err() == context.DeadlineExceeded {563 return operationTimeout{err: ctx.Err()}564 }565 return ctx.Err()566}567// StreamOptions are the options used to configure the stream redirection568type StreamOptions struct {569 RawTerminal bool570 InputStream io.Reader571 OutputStream io.Writer572 ErrorStream io.Writer573 ExecStarted chan struct{}574}575// operationTimeout is the error returned when the docker operations are timeout.576type operationTimeout struct {577 err error578}579func (e operationTimeout) Error() string {580 return fmt.Sprintf("operation timeout: %v", e.err)581}582// containerNotFoundErrorRegx is the regexp of container not found error message.583var containerNotFoundErrorRegx = regexp.MustCompile(`No such container: [0-9a-z]+`)584// IsContainerNotFoundError checks whether the error is container not found error.585func IsContainerNotFoundError(err error) bool {586 return containerNotFoundErrorRegx.MatchString(err.Error())587}588// ImageNotFoundError is the error returned by InspectImage when image not found.589// Expose this to inject error in dockershim for testing.590type ImageNotFoundError struct {591 ID string592}593func (e ImageNotFoundError) Error() string {594 return fmt.Sprintf("no such image: %q", e.ID)595}596// IsImageNotFoundError checks whether the error is image not found error. This is exposed597// to share with dockershim.598func IsImageNotFoundError(err error) bool {599 _, ok := err.(ImageNotFoundError)600 return ok...

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String

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1import (2func main() {3 err := golerror.New("This is a new error")4 fmt.Println(err)5}6import (7func main() {8 err := golerror.New("This is a new error")9 fmt.Println(err)10 fmt.Println("Error: ", err.Error())11}12import (13func main() {14 err := golerror.New("This is a new error")15 fmt.Println("Error: ", err.Error())16}17import (18func main() {19 err := golerror.New("This is a new error")20 fmt.Println("Error: ", err.Error())21}22import (23func main() {24 err := golerror.New("

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String

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1import (2func main() {3 ctxerr := golctxerr.New("main", "main")4 fmt.Println(ctxerr.String())5}6import (7func main() {8 ctxerr := golctxerr.New("main", "main")9 fmt.Println(ctxerr.Error())10}11import (12func main() {13 ctxerr := golctxerr.New("main", "main")14 fmt.Println(ctxerr)15}16import (17func main() {18 ctxerr := golctxerr.New("main", "main")19 fmt.Println(ctxerr.Error())20}21import (22func main() {23 ctxerr := golctxerr.New("main", "main")24 fmt.Println(ctxerr)25}26import (27func main() {28 ctxerr := golctxerr.New("main", "main")29 fmt.Println(ctxerr.Error())30}31import (32func main() {33 ctxerr := golctxerr.New("main", "main")34 fmt.Println(ctxerr)35}36import (37func main() {38 ctxerr := golctxerr.New("main", "

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String

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1import (2func main() {3 err = ctxerr.New("error message", ctxerr.WithCode(500))4 fmt.Println(err)5}6error message (code: 500)7import (8func main() {9 err = ctxerr.New("error message", ctxerr.WithCode(500))10 fmt.Println(err)11 fmt.Println(ctxerr.StackTrace(err))12}13error message (code: 500)14import (15func main() {16 err = ctxerr.New("error message", ctxerr.WithCode(500))17 fmt.Println(err)18 fmt.Println(ctxerr.StackTrace(err))19 fmt.Println(ctxerr.StackTrace(err, ctxerr.WithContext("user", "alextanhongpin")))20}21error message (code: 500)

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String

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1import "fmt"2import "github.com/GoLangsam/ctxerr"3func main() {4 e = ctxerr.New("error string")5 fmt.Println(e)6}7import "fmt"8import "github.com/GoLangsam/ctxerr"9func main() {10 e = ctxerr.New("error string")11 fmt.Println(e)12 fmt.Println(e.Error())13}14import "fmt"15import "github.com/GoLangsam/ctxerr"16func main() {17 e = ctxerr.New("error string")18 fmt.Println(e)19 fmt.Println(e.Error())20 fmt.Println(e.String())21}22import "fmt"23import "github.com/GoLangsam/ctxerr"24func main() {25 e = ctxerr.New("error string")26 fmt.Println(e)27 fmt.Println(e.Error())28 fmt.Println(e.String())29 fmt.Println(e)30}31import "fmt"32import "github.com/GoLangsam/ctxerr"33func main() {34 e = ctxerr.New("error string")35 fmt.Println(e)36 fmt.Println(e.Error())37 fmt.Println(e.String())38 fmt.Println(e)39 fmt.Println(e.Error())40}41import "fmt"42import "github.com/GoLangsam/ctxerr"43func main() {

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String

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1import (2func main() {3 err := ctxerr.New("context error")4 fmt.Println(err)5}6import (7func main() {8 err := ctxerr.New("context error")9 err = ctxerr.Wrap(err, os.Open("file.txt"))10 fmt.Println(err)11}12import (13func main() {14 err := ctxerr.New("context error")15 err = ctxerr.Wrap(err, os.Open("file.txt"))16 fmt.Println(err)17 fmt.Println(err.Details())18}19import (20func main() {21 err := ctxerr.New("context error")22 err = ctxerr.Wrap(err,

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String

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1import (2func main() {3 err := ctxerr.New("error message")4 fmt.Println(err)5}6import (7func main() {8 err := ctxerr.New("error message")9 err = ctxerr.Wrap(err, "context message")10 fmt.Println(err)11 fmt.Println(os.IsExist(err))12}13import (14func main() {15 err := ctxerr.New("error message")16 err = ctxerr.Wrapf(err, "context message: %s", "error message")17 fmt.Println(err)18 fmt.Println(os.IsExist(err))19}

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1import "fmt"2import "github.com/rajdeepd/ctxerr"3func main() {4 err := ctxerr.New("Error occured")5 fmt.Println(err)6}7Error()8Error()9Error()10Error()11Error()

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