mirror of
https://github.com/ceph/ceph-csi.git
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build: move e2e dependencies into e2e/go.mod
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
This commit is contained in:
Niels de Vos
committed by
mergify[bot]
mergify[bot]
parent
15da101b1b
commit
bec6090996
214
vendor/golang.org/x/sync/singleflight/singleflight.go
generated
vendored
214
vendor/golang.org/x/sync/singleflight/singleflight.go
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vendored
@ -1,214 +0,0 @@
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// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package singleflight provides a duplicate function call suppression
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// mechanism.
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package singleflight // import "golang.org/x/sync/singleflight"
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import (
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"bytes"
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"errors"
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"fmt"
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"runtime"
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"runtime/debug"
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"sync"
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)
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// errGoexit indicates the runtime.Goexit was called in
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// the user given function.
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var errGoexit = errors.New("runtime.Goexit was called")
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// A panicError is an arbitrary value recovered from a panic
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// with the stack trace during the execution of given function.
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type panicError struct {
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value interface{}
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stack []byte
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}
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// Error implements error interface.
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func (p *panicError) Error() string {
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return fmt.Sprintf("%v\n\n%s", p.value, p.stack)
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}
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func (p *panicError) Unwrap() error {
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err, ok := p.value.(error)
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if !ok {
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return nil
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}
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return err
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}
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func newPanicError(v interface{}) error {
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stack := debug.Stack()
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// The first line of the stack trace is of the form "goroutine N [status]:"
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// but by the time the panic reaches Do the goroutine may no longer exist
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// and its status will have changed. Trim out the misleading line.
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if line := bytes.IndexByte(stack[:], '\n'); line >= 0 {
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stack = stack[line+1:]
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}
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return &panicError{value: v, stack: stack}
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}
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// call is an in-flight or completed singleflight.Do call
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type call struct {
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wg sync.WaitGroup
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// These fields are written once before the WaitGroup is done
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// and are only read after the WaitGroup is done.
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val interface{}
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err error
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// These fields are read and written with the singleflight
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// mutex held before the WaitGroup is done, and are read but
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// not written after the WaitGroup is done.
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dups int
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chans []chan<- Result
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}
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// Group represents a class of work and forms a namespace in
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// which units of work can be executed with duplicate suppression.
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type Group struct {
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mu sync.Mutex // protects m
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m map[string]*call // lazily initialized
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}
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// Result holds the results of Do, so they can be passed
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// on a channel.
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type Result struct {
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Val interface{}
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Err error
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Shared bool
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}
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// Do executes and returns the results of the given function, making
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// sure that only one execution is in-flight for a given key at a
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// time. If a duplicate comes in, the duplicate caller waits for the
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// original to complete and receives the same results.
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// The return value shared indicates whether v was given to multiple callers.
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func (g *Group) Do(key string, fn func() (interface{}, error)) (v interface{}, err error, shared bool) {
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g.mu.Lock()
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if g.m == nil {
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g.m = make(map[string]*call)
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}
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if c, ok := g.m[key]; ok {
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c.dups++
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g.mu.Unlock()
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c.wg.Wait()
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if e, ok := c.err.(*panicError); ok {
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panic(e)
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} else if c.err == errGoexit {
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runtime.Goexit()
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}
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return c.val, c.err, true
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}
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c := new(call)
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c.wg.Add(1)
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g.m[key] = c
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g.mu.Unlock()
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g.doCall(c, key, fn)
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return c.val, c.err, c.dups > 0
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}
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// DoChan is like Do but returns a channel that will receive the
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// results when they are ready.
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//
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// The returned channel will not be closed.
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func (g *Group) DoChan(key string, fn func() (interface{}, error)) <-chan Result {
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ch := make(chan Result, 1)
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g.mu.Lock()
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if g.m == nil {
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g.m = make(map[string]*call)
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}
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if c, ok := g.m[key]; ok {
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c.dups++
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c.chans = append(c.chans, ch)
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g.mu.Unlock()
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return ch
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}
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c := &call{chans: []chan<- Result{ch}}
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c.wg.Add(1)
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g.m[key] = c
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g.mu.Unlock()
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go g.doCall(c, key, fn)
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return ch
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}
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// doCall handles the single call for a key.
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func (g *Group) doCall(c *call, key string, fn func() (interface{}, error)) {
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normalReturn := false
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recovered := false
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// use double-defer to distinguish panic from runtime.Goexit,
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// more details see https://golang.org/cl/134395
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defer func() {
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// the given function invoked runtime.Goexit
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if !normalReturn && !recovered {
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c.err = errGoexit
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}
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g.mu.Lock()
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defer g.mu.Unlock()
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c.wg.Done()
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if g.m[key] == c {
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delete(g.m, key)
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}
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if e, ok := c.err.(*panicError); ok {
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// In order to prevent the waiting channels from being blocked forever,
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// needs to ensure that this panic cannot be recovered.
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if len(c.chans) > 0 {
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go panic(e)
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select {} // Keep this goroutine around so that it will appear in the crash dump.
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} else {
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panic(e)
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}
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} else if c.err == errGoexit {
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// Already in the process of goexit, no need to call again
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} else {
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// Normal return
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for _, ch := range c.chans {
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ch <- Result{c.val, c.err, c.dups > 0}
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}
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}
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}()
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func() {
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defer func() {
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if !normalReturn {
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// Ideally, we would wait to take a stack trace until we've determined
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// whether this is a panic or a runtime.Goexit.
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//
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// Unfortunately, the only way we can distinguish the two is to see
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// whether the recover stopped the goroutine from terminating, and by
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// the time we know that, the part of the stack trace relevant to the
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// panic has been discarded.
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if r := recover(); r != nil {
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c.err = newPanicError(r)
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}
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}
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}()
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c.val, c.err = fn()
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normalReturn = true
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}()
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if !normalReturn {
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recovered = true
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}
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}
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// Forget tells the singleflight to forget about a key. Future calls
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// to Do for this key will call the function rather than waiting for
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// an earlier call to complete.
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func (g *Group) Forget(key string) {
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g.mu.Lock()
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delete(g.m, key)
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g.mu.Unlock()
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}
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