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Add helper function for including stack trace with error message

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Not currently used, but was useful in tracking down the specific call path for the empty token handling

Prints error as:
> `msg="Error: starting kubernetes: failed to start cluster: failed to normalize server token; must be in format K10<CA-HASH>::<USERNAME>:<PASSWORD> or <PASSWORD> at github.com/urfave/cli/v2.(*App).RunContext(app.go:333)->github.com/urfave/cli/v2.(*Command).Run(command.go:269)->github.com/urfave/cli/v2.(*Command).Run(command.go:276)->github.com/k3s-io/k3s/pkg/cli/server.Run(server.go:48)->github.com/k3s-io/k3s/pkg/cli/server.run(server.go:629)->github.com/k3s-io/k3s/pkg/server.StartServer(server.go:74)->github.com/k3s-io/k3s/pkg/daemons/control.Server(server.go:72)->github.com/k3s-io/k3s/pkg/cluster.(*Cluster).Start(cluster.go:75)->github.com/k3s-io/k3s/pkg/cluster.Save(storage.go:79)->github.com/k3s-io/k3s/pkg/util.NormalizeToken(token.go:51)"`

Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
This commit is contained in:
Brad Davidson 2026-01-30 00:05:16 +00:00 committed by Brad Davidson
parent 5e63bbe260
commit ce17fce058
1 changed files with 26 additions and 1 deletions
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27
pkg/util/errors.go
View file

@ -1,6 +1,31 @@
package util package util
import "errors" import (
"errors"
"fmt"
"path"
"runtime"
"slices"
"strings"
)
var ErrCommandNoArgs = errors.New("this command does not take any arguments") var ErrCommandNoArgs = errors.New("this command does not take any arguments")
var ErrUnsupportedPlatform = errors.New("unsupported platform") var ErrUnsupportedPlatform = errors.New("unsupported platform")
func ErrWithStack(message string) error {
stack := []string{}
pcs := make([]uintptr, 32)
runtime.Callers(2, pcs)
frames := runtime.CallersFrames(pcs)
for {
frame, more := frames.Next()
if !strings.HasPrefix(frame.Function, "runtime.") {
stack = append(stack, fmt.Sprintf("%s(%s:%d)", frame.Function, path.Base(frame.File), frame.Line))
}
if !more {
break
}
}
slices.Reverse(stack)
return errors.New(message + " at " + strings.Join(stack, "->"))
}