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rebase: bump the k8s-dependencies group with 2 updates
Bumps the k8s-dependencies group with 2 updates: [k8s.io/klog/v2](https://github.com/kubernetes/klog) and [sigs.k8s.io/controller-runtime](https://github.com/kubernetes-sigs/controller-runtime). Updates `k8s.io/klog/v2` from 2.120.0 to 2.120.1 - [Release notes](https://github.com/kubernetes/klog/releases) - [Changelog](https://github.com/kubernetes/klog/blob/main/RELEASE.md) - [Commits](https://github.com/kubernetes/klog/compare/v2.120.0...v2.120.1) Updates `sigs.k8s.io/controller-runtime` from 0.16.3 to 0.17.0 - [Release notes](https://github.com/kubernetes-sigs/controller-runtime/releases) - [Changelog](https://github.com/kubernetes-sigs/controller-runtime/blob/main/RELEASE.md) - [Commits](https://github.com/kubernetes-sigs/controller-runtime/compare/v0.16.3...v0.17.0) --- updated-dependencies: - dependency-name: k8s.io/klog/v2 dependency-type: direct:production update-type: version-update:semver-patch dependency-group: k8s-dependencies - dependency-name: sigs.k8s.io/controller-runtime dependency-type: direct:production update-type: version-update:semver-minor dependency-group: k8s-dependencies ... Signed-off-by: dependabot[bot] <support@github.com>
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mergify[bot]
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181
vendor/go.uber.org/zap/internal/stacktrace/stack.go
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vendor/go.uber.org/zap/internal/stacktrace/stack.go
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// Copyright (c) 2023 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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// Package stacktrace provides support for gathering stack traces
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// efficiently.
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package stacktrace
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import (
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"runtime"
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"go.uber.org/zap/buffer"
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"go.uber.org/zap/internal/bufferpool"
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"go.uber.org/zap/internal/pool"
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)
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var _stackPool = pool.New(func() *Stack {
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return &Stack{
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storage: make([]uintptr, 64),
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}
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})
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// Stack is a captured stack trace.
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type Stack struct {
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pcs []uintptr // program counters; always a subslice of storage
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frames *runtime.Frames
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// The size of pcs varies depending on requirements:
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// it will be one if the only the first frame was requested,
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// and otherwise it will reflect the depth of the call stack.
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//
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// storage decouples the slice we need (pcs) from the slice we pool.
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// We will always allocate a reasonably large storage, but we'll use
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// only as much of it as we need.
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storage []uintptr
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}
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// Depth specifies how deep of a stack trace should be captured.
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type Depth int
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const (
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// First captures only the first frame.
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First Depth = iota
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// Full captures the entire call stack, allocating more
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// storage for it if needed.
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Full
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)
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// Capture captures a stack trace of the specified depth, skipping
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// the provided number of frames. skip=0 identifies the caller of
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// Capture.
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//
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// The caller must call Free on the returned stacktrace after using it.
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func Capture(skip int, depth Depth) *Stack {
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stack := _stackPool.Get()
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switch depth {
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case First:
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stack.pcs = stack.storage[:1]
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case Full:
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stack.pcs = stack.storage
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}
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// Unlike other "skip"-based APIs, skip=0 identifies runtime.Callers
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// itself. +2 to skip captureStacktrace and runtime.Callers.
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numFrames := runtime.Callers(
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skip+2,
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stack.pcs,
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)
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// runtime.Callers truncates the recorded stacktrace if there is no
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// room in the provided slice. For the full stack trace, keep expanding
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// storage until there are fewer frames than there is room.
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if depth == Full {
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pcs := stack.pcs
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for numFrames == len(pcs) {
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pcs = make([]uintptr, len(pcs)*2)
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numFrames = runtime.Callers(skip+2, pcs)
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}
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// Discard old storage instead of returning it to the pool.
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// This will adjust the pool size over time if stack traces are
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// consistently very deep.
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stack.storage = pcs
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stack.pcs = pcs[:numFrames]
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} else {
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stack.pcs = stack.pcs[:numFrames]
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}
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stack.frames = runtime.CallersFrames(stack.pcs)
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return stack
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}
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// Free releases resources associated with this stacktrace
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// and returns it back to the pool.
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func (st *Stack) Free() {
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st.frames = nil
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st.pcs = nil
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_stackPool.Put(st)
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}
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// Count reports the total number of frames in this stacktrace.
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// Count DOES NOT change as Next is called.
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func (st *Stack) Count() int {
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return len(st.pcs)
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}
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// Next returns the next frame in the stack trace,
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// and a boolean indicating whether there are more after it.
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func (st *Stack) Next() (_ runtime.Frame, more bool) {
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return st.frames.Next()
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}
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// Take returns a string representation of the current stacktrace.
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//
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// skip is the number of frames to skip before recording the stack trace.
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// skip=0 identifies the caller of Take.
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func Take(skip int) string {
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stack := Capture(skip+1, Full)
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defer stack.Free()
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buffer := bufferpool.Get()
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defer buffer.Free()
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stackfmt := NewFormatter(buffer)
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stackfmt.FormatStack(stack)
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return buffer.String()
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}
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// Formatter formats a stack trace into a readable string representation.
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type Formatter struct {
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b *buffer.Buffer
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nonEmpty bool // whehther we've written at least one frame already
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}
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// NewFormatter builds a new Formatter.
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func NewFormatter(b *buffer.Buffer) Formatter {
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return Formatter{b: b}
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}
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// FormatStack formats all remaining frames in the provided stacktrace -- minus
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// the final runtime.main/runtime.goexit frame.
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func (sf *Formatter) FormatStack(stack *Stack) {
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// Note: On the last iteration, frames.Next() returns false, with a valid
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// frame, but we ignore this frame. The last frame is a runtime frame which
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// adds noise, since it's only either runtime.main or runtime.goexit.
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for frame, more := stack.Next(); more; frame, more = stack.Next() {
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sf.FormatFrame(frame)
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}
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}
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// FormatFrame formats the given frame.
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func (sf *Formatter) FormatFrame(frame runtime.Frame) {
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if sf.nonEmpty {
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sf.b.AppendByte('\n')
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}
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sf.nonEmpty = true
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sf.b.AppendString(frame.Function)
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sf.b.AppendByte('\n')
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sf.b.AppendByte('\t')
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sf.b.AppendString(frame.File)
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sf.b.AppendByte(':')
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sf.b.AppendInt(int64(frame.Line))
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}
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