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cleanup: avoid comparing errors directly
Go 1.13 contains support for error wrapping. To support wrapping, fmt.Errorf now has a %w verb for creating wrapped errors, and three new functions in the errors package ( errors.Unwrap, errors.Is and errors.As) simplify unwrapping and inspecting wrapped errors. With this change, If we currently compare errors using ==, we have to use errors.Is instead. Example: if err == io.ErrUnexpectedEOF becomes if errors.Is(err, io.ErrUnexpectedEOF) https://tip.golang.org/doc/go1.13#error_wrapping Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
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@ -4,6 +4,7 @@ import (
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"context"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"regexp"
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@ -177,7 +178,7 @@ func waitForDeploymentComplete(name, ns string, c clientset.Interface, t int) er
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return false, nil
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})
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if err == wait.ErrWaitTimeout {
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if errors.Is(err, wait.ErrWaitTimeout) {
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err = fmt.Errorf("%s", reason)
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}
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if err != nil {
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@ -19,6 +19,7 @@ package rbd
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"os"
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"strconv"
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@ -257,7 +258,7 @@ func waitForrbdImage(ctx context.Context, backoff wait.Backoff, volOptions *rbdV
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return !used, nil
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})
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// return error if rbd image has not become available for the specified timeout
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if err == wait.ErrWaitTimeout {
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if errors.Is(err, wait.ErrWaitTimeout) {
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return fmt.Errorf("rbd image %s is still being used", imagePath)
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}
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// return error if any other errors were encountered during waiting for the image to become available
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@ -267,7 +267,7 @@ func rbdStatus(ctx context.Context, pOpts *rbdVolume, cr *util.Credentials) (boo
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output = string(cmd)
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if err, ok := err.(*exec.Error); ok {
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if err.Err == exec.ErrNotFound {
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if errors.Is(err.Err, exec.ErrNotFound) {
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klog.Errorf(util.Log(ctx, "rbd cmd not found"))
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// fail fast if command not found
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return false, output, err
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@ -62,7 +62,7 @@ func (nc *NodeCache) ForAll(pattern string, destObj interface{}, f ForAllFunc) e
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cachePath := path.Join(nc.BasePath, nc.CacheDir)
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for _, file := range files {
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err = decodeObj(cachePath, pattern, file, destObj)
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if err == errDec {
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if errors.Is(err, errDec) {
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continue
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} else if err == nil {
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if err = f(strings.TrimSuffix(file.Name(), filepath.Ext(file.Name()))); err != nil {
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