rebase: update kubernetes to 1.28.0 in main

updating kubernetes to 1.28.0
in the main repo.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/go.uber.org/multierr/CHANGELOG.md

@@ -1,6 +1,29 @@
 Releases
 ========
 
+v1.11.0 (2023-03-28)
+====================
+-   `Errors` now supports any error that implements multiple-error
+    interface.
+-   Add `Every` function to allow checking if all errors in the chain
+    satisfies `errors.Is` against the target error.
+
+v1.10.0 (2023-03-08)
+====================
+
+-   Comply with Go 1.20's multiple-error interface.
+-   Drop Go 1.18 support.
+    Per the support policy, only Go 1.19 and 1.20 are supported now.
+-   Drop all non-test external dependencies.
+
+v1.9.0 (2022-12-12)
+===================
+
+-   Add `AppendFunc` that allow passsing functions to similar to
+    `AppendInvoke`.
+
+-   Bump up yaml.v3 dependency to 3.0.1.
+
 v1.8.0 (2022-02-28)
 ===================
 

vendor/go.uber.org/multierr/README.md

@@ -2,9 +2,29 @@
 
 `multierr` allows combining one or more Go `error`s together.
 
+## Features
+
+- **Idiomatic**:
+  multierr follows best practices in Go, and keeps your code idiomatic.
+    - It keeps the underlying error type hidden,
+      allowing you to deal in `error` values exclusively.
+    - It provides APIs to safely append into an error from a `defer` statement.
+- **Performant**:
+  multierr is optimized for performance:
+    - It avoids allocations where possible.
+    - It utilizes slice resizing semantics to optimize common cases
+      like appending into the same error object from a loop.
+- **Interoperable**:
+  multierr interoperates with the Go standard library's error APIs seamlessly:
+    - The `errors.Is` and `errors.As` functions *just work*.
+- **Lightweight**:
+  multierr comes with virtually no dependencies.
+
 ## Installation
 
-    go get -u go.uber.org/multierr
+```bash
+go get -u go.uber.org/multierr@latest
+```
 
 ## Status
 

vendor/go.uber.org/multierr/error.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2017-2021 Uber Technologies, Inc.
+// Copyright (c) 2017-2023 Uber Technologies, Inc.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
@@ -20,106 +20,109 @@
 
 // Package multierr allows combining one or more errors together.
 //
-// Overview
+// # Overview
 //
 // Errors can be combined with the use of the Combine function.
 //
-// 	multierr.Combine(
-// 		reader.Close(),
-// 		writer.Close(),
-// 		conn.Close(),
-// 	)
+//	multierr.Combine(
+//		reader.Close(),
+//		writer.Close(),
+//		conn.Close(),
+//	)
 //
 // If only two errors are being combined, the Append function may be used
 // instead.
 //
-// 	err = multierr.Append(reader.Close(), writer.Close())
+//	err = multierr.Append(reader.Close(), writer.Close())
 //
 // The underlying list of errors for a returned error object may be retrieved
 // with the Errors function.
 //
-// 	errors := multierr.Errors(err)
-// 	if len(errors) > 0 {
-// 		fmt.Println("The following errors occurred:", errors)
-// 	}
+//	errors := multierr.Errors(err)
+//	if len(errors) > 0 {
+//		fmt.Println("The following errors occurred:", errors)
+//	}
 //
-// Appending from a loop
+// # Appending from a loop
 //
 // You sometimes need to append into an error from a loop.
 //
-// 	var err error
-// 	for _, item := range items {
-// 		err = multierr.Append(err, process(item))
-// 	}
+//	var err error
+//	for _, item := range items {
+//		err = multierr.Append(err, process(item))
+//	}
 //
 // Cases like this may require knowledge of whether an individual instance
 // failed. This usually requires introduction of a new variable.
 //
-// 	var err error
-// 	for _, item := range items {
-// 		if perr := process(item); perr != nil {
-// 			log.Warn("skipping item", item)
-// 			err = multierr.Append(err, perr)
-// 		}
-// 	}
+//	var err error
+//	for _, item := range items {
+//		if perr := process(item); perr != nil {
+//			log.Warn("skipping item", item)
+//			err = multierr.Append(err, perr)
+//		}
+//	}
 //
 // multierr includes AppendInto to simplify cases like this.
 //
-// 	var err error
-// 	for _, item := range items {
-// 		if multierr.AppendInto(&err, process(item)) {
-// 			log.Warn("skipping item", item)
-// 		}
-// 	}
+//	var err error
+//	for _, item := range items {
+//		if multierr.AppendInto(&err, process(item)) {
+//			log.Warn("skipping item", item)
+//		}
+//	}
 //
 // This will append the error into the err variable, and return true if that
 // individual error was non-nil.
 //
-// See AppendInto for more information.
+// See [AppendInto] for more information.
 //
-// Deferred Functions
+// # Deferred Functions
 //
 // Go makes it possible to modify the return value of a function in a defer
 // block if the function was using named returns. This makes it possible to
 // record resource cleanup failures from deferred blocks.
 //
-// 	func sendRequest(req Request) (err error) {
-// 		conn, err := openConnection()
-// 		if err != nil {
-// 			return err
-// 		}
-// 		defer func() {
-// 			err = multierr.Append(err, conn.Close())
-// 		}()
-// 		// ...
-// 	}
+//	func sendRequest(req Request) (err error) {
+//		conn, err := openConnection()
+//		if err != nil {
+//			return err
+//		}
+//		defer func() {
+//			err = multierr.Append(err, conn.Close())
+//		}()
+//		// ...
+//	}
 //
 // multierr provides the Invoker type and AppendInvoke function to make cases
 // like the above simpler and obviate the need for a closure. The following is
 // roughly equivalent to the example above.
 //
-// 	func sendRequest(req Request) (err error) {
-// 		conn, err := openConnection()
-// 		if err != nil {
-// 			return err
-// 		}
-// 		defer multierr.AppendInvoke(&err, multierr.Close(conn))
-// 		// ...
-// 	}
+//	func sendRequest(req Request) (err error) {
+//		conn, err := openConnection()
+//		if err != nil {
+//			return err
+//		}
+//		defer multierr.AppendInvoke(&err, multierr.Close(conn))
+//		// ...
+//	}
 //
-// See AppendInvoke and Invoker for more information.
+// See [AppendInvoke] and [Invoker] for more information.
 //
-// Advanced Usage
+// NOTE: If you're modifying an error from inside a defer, you MUST use a named
+// return value for that function.
+//
+// # Advanced Usage
 //
 // Errors returned by Combine and Append MAY implement the following
 // interface.
 //
-// 	type errorGroup interface {
-// 		// Returns a slice containing the underlying list of errors.
-// 		//
-// 		// This slice MUST NOT be modified by the caller.
-// 		Errors() []error
-// 	}
+//	type errorGroup interface {
+//		// Returns a slice containing the underlying list of errors.
+//		//
+//		// This slice MUST NOT be modified by the caller.
+//		Errors() []error
+//	}
 //
 // Note that if you need access to list of errors behind a multierr error, you
 // should prefer using the Errors function. That said, if you need cheap
@@ -128,13 +131,13 @@
 // because errors returned by Combine and Append are not guaranteed to
 // implement this interface.
 //
-// 	var errors []error
-// 	group, ok := err.(errorGroup)
-// 	if ok {
-// 		errors = group.Errors()
-// 	} else {
-// 		errors = []error{err}
-// 	}
+//	var errors []error
+//	group, ok := err.(errorGroup)
+//	if ok {
+//		errors = group.Errors()
+//	} else {
+//		errors = []error{err}
+//	}
 package multierr // import "go.uber.org/multierr"
 
 import (
@@ -144,8 +147,7 @@ import (
 	"io"
 	"strings"
 	"sync"
-
-	"go.uber.org/atomic"
+	"sync/atomic"
 )
 
 var (
@@ -185,34 +187,15 @@ type errorGroup interface {
 // Errors returns a slice containing zero or more errors that the supplied
 // error is composed of. If the error is nil, a nil slice is returned.
 //
-// 	err := multierr.Append(r.Close(), w.Close())
-// 	errors := multierr.Errors(err)
+//	err := multierr.Append(r.Close(), w.Close())
+//	errors := multierr.Errors(err)
 //
 // If the error is not composed of other errors, the returned slice contains
 // just the error that was passed in.
 //
 // Callers of this function are free to modify the returned slice.
 func Errors(err error) []error {
-	if err == nil {
-		return nil
-	}
-
-	// Note that we're casting to multiError, not errorGroup. Our contract is
-	// that returned errors MAY implement errorGroup. Errors, however, only
-	// has special behavior for multierr-specific error objects.
-	//
-	// This behavior can be expanded in the future but I think it's prudent to
-	// start with as little as possible in terms of contract and possibility
-	// of misuse.
-	eg, ok := err.(*multiError)
-	if !ok {
-		return []error{err}
-	}
-
-	errors := eg.Errors()
-	result := make([]error, len(errors))
-	copy(result, errors)
-	return result
+	return extractErrors(err)
 }
 
 // multiError is an error that holds one or more errors.
@@ -227,8 +210,6 @@ type multiError struct {
 	errors     []error
 }
 
-var _ errorGroup = (*multiError)(nil)
-
 // Errors returns the list of underlying errors.
 //
 // This slice MUST NOT be modified.
@@ -239,33 +220,6 @@ func (merr *multiError) Errors() []error {
 	return merr.errors
 }
 
-// As attempts to find the first error in the error list that matches the type
-// of the value that target points to.
-//
-// This function allows errors.As to traverse the values stored on the
-// multierr error.
-func (merr *multiError) As(target interface{}) bool {
-	for _, err := range merr.Errors() {
-		if errors.As(err, target) {
-			return true
-		}
-	}
-	return false
-}
-
-// Is attempts to match the provided error against errors in the error list.
-//
-// This function allows errors.Is to traverse the values stored on the
-// multierr error.
-func (merr *multiError) Is(target error) bool {
-	for _, err := range merr.Errors() {
-		if errors.Is(err, target) {
-			return true
-		}
-	}
-	return false
-}
-
 func (merr *multiError) Error() string {
 	if merr == nil {
 		return ""
@@ -281,6 +235,17 @@ func (merr *multiError) Error() string {
 	return result
 }
 
+// Every compares every error in the given err against the given target error
+// using [errors.Is], and returns true only if every comparison returned true.
+func Every(err error, target error) bool {
+	for _, e := range extractErrors(err) {
+		if !errors.Is(e, target) {
+			return false
+		}
+	}
+	return true
+}
+
 func (merr *multiError) Format(f fmt.State, c rune) {
 	if c == 'v' && f.Flag('+') {
 		merr.writeMultiline(f)
@@ -393,8 +358,7 @@ func fromSlice(errors []error) error {
 			// Otherwise "errors" escapes to the heap
 			// unconditionally for all other cases.
 			// This lets us optimize for the "no errors" case.
-			out := make([]error, len(errors))
-			copy(out, errors)
+			out := append(([]error)(nil), errors...)
 			return &multiError{errors: out}
 		}
 	}
@@ -420,32 +384,32 @@ func fromSlice(errors []error) error {
 // If zero arguments were passed or if all items are nil, a nil error is
 // returned.
 //
-// 	Combine(nil, nil)  // == nil
+//	Combine(nil, nil)  // == nil
 //
 // If only a single error was passed, it is returned as-is.
 //
-// 	Combine(err)  // == err
+//	Combine(err)  // == err
 //
 // Combine skips over nil arguments so this function may be used to combine
 // together errors from operations that fail independently of each other.
 //
-// 	multierr.Combine(
-// 		reader.Close(),
-// 		writer.Close(),
-// 		pipe.Close(),
-// 	)
+//	multierr.Combine(
+//		reader.Close(),
+//		writer.Close(),
+//		pipe.Close(),
+//	)
 //
 // If any of the passed errors is a multierr error, it will be flattened along
 // with the other errors.
 //
-// 	multierr.Combine(multierr.Combine(err1, err2), err3)
-// 	// is the same as
-// 	multierr.Combine(err1, err2, err3)
+//	multierr.Combine(multierr.Combine(err1, err2), err3)
+//	// is the same as
+//	multierr.Combine(err1, err2, err3)
 //
 // The returned error formats into a readable multi-line error message if
 // formatted with %+v.
 //
-// 	fmt.Sprintf("%+v", multierr.Combine(err1, err2))
+//	fmt.Sprintf("%+v", multierr.Combine(err1, err2))
 func Combine(errors ...error) error {
 	return fromSlice(errors)
 }
@@ -455,16 +419,19 @@ func Combine(errors ...error) error {
 // This function is a specialization of Combine for the common case where
 // there are only two errors.
 //
-// 	err = multierr.Append(reader.Close(), writer.Close())
+//	err = multierr.Append(reader.Close(), writer.Close())
 //
 // The following pattern may also be used to record failure of deferred
 // operations without losing information about the original error.
 //
-// 	func doSomething(..) (err error) {
-// 		f := acquireResource()
-// 		defer func() {
-// 			err = multierr.Append(err, f.Close())
-// 		}()
+//	func doSomething(..) (err error) {
+//		f := acquireResource()
+//		defer func() {
+//			err = multierr.Append(err, f.Close())
+//		}()
+//
+// Note that the variable MUST be a named return to append an error to it from
+// the defer statement. See also [AppendInvoke].
 func Append(left error, right error) error {
 	switch {
 	case left == nil:
@@ -494,37 +461,37 @@ func Append(left error, right error) error {
 // AppendInto appends an error into the destination of an error pointer and
 // returns whether the error being appended was non-nil.
 //
-// 	var err error
-// 	multierr.AppendInto(&err, r.Close())
-// 	multierr.AppendInto(&err, w.Close())
+//	var err error
+//	multierr.AppendInto(&err, r.Close())
+//	multierr.AppendInto(&err, w.Close())
 //
 // The above is equivalent to,
 //
-// 	err := multierr.Append(r.Close(), w.Close())
+//	err := multierr.Append(r.Close(), w.Close())
 //
 // As AppendInto reports whether the provided error was non-nil, it may be
 // used to build a multierr error in a loop more ergonomically. For example:
 //
-// 	var err error
-// 	for line := range lines {
-// 		var item Item
-// 		if multierr.AppendInto(&err, parse(line, &item)) {
-// 			continue
-// 		}
-// 		items = append(items, item)
-// 	}
+//	var err error
+//	for line := range lines {
+//		var item Item
+//		if multierr.AppendInto(&err, parse(line, &item)) {
+//			continue
+//		}
+//		items = append(items, item)
+//	}
 //
 // Compare this with a version that relies solely on Append:
 //
-// 	var err error
-// 	for line := range lines {
-// 		var item Item
-// 		if parseErr := parse(line, &item); parseErr != nil {
-// 			err = multierr.Append(err, parseErr)
-// 			continue
-// 		}
-// 		items = append(items, item)
-// 	}
+//	var err error
+//	for line := range lines {
+//		var item Item
+//		if parseErr := parse(line, &item); parseErr != nil {
+//			err = multierr.Append(err, parseErr)
+//			continue
+//		}
+//		items = append(items, item)
+//	}
 func AppendInto(into *error, err error) (errored bool) {
 	if into == nil {
 		// We panic if 'into' is nil. This is not documented above
@@ -545,7 +512,7 @@ func AppendInto(into *error, err error) (errored bool) {
 // AppendInvoke to append the result of calling the function into an error.
 // This allows you to conveniently defer capture of failing operations.
 //
-// See also, Close and Invoke.
+// See also, [Close] and [Invoke].
 type Invoker interface {
 	Invoke() error
 }
@@ -556,19 +523,22 @@ type Invoker interface {
 //
 // For example,
 //
-// 	func processReader(r io.Reader) (err error) {
-// 		scanner := bufio.NewScanner(r)
-// 		defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
-// 		for scanner.Scan() {
-// 			// ...
-// 		}
-// 		// ...
-// 	}
+//	func processReader(r io.Reader) (err error) {
+//		scanner := bufio.NewScanner(r)
+//		defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
+//		for scanner.Scan() {
+//			// ...
+//		}
+//		// ...
+//	}
 //
 // In this example, the following line will construct the Invoker right away,
 // but defer the invocation of scanner.Err() until the function returns.
 //
-// 	defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
+//	defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
+//
+// Note that the error you're appending to from the defer statement MUST be a
+// named return.
 type Invoke func() error
 
 // Invoke calls the supplied function and returns its result.
@@ -579,19 +549,22 @@ func (i Invoke) Invoke() error { return i() }
 //
 // For example,
 //
-// 	func processFile(path string) (err error) {
-// 		f, err := os.Open(path)
-// 		if err != nil {
-// 			return err
-// 		}
-// 		defer multierr.AppendInvoke(&err, multierr.Close(f))
-// 		return processReader(f)
-// 	}
+//	func processFile(path string) (err error) {
+//		f, err := os.Open(path)
+//		if err != nil {
+//			return err
+//		}
+//		defer multierr.AppendInvoke(&err, multierr.Close(f))
+//		return processReader(f)
+//	}
 //
 // In this example, multierr.Close will construct the Invoker right away, but
 // defer the invocation of f.Close until the function returns.
 //
-// 	defer multierr.AppendInvoke(&err, multierr.Close(f))
+//	defer multierr.AppendInvoke(&err, multierr.Close(f))
+//
+// Note that the error you're appending to from the defer statement MUST be a
+// named return.
 func Close(closer io.Closer) Invoker {
 	return Invoke(closer.Close)
 }
@@ -601,52 +574,73 @@ func Close(closer io.Closer) Invoker {
 // invocation of fallible operations until a function returns, and capture the
 // resulting errors.
 //
-// 	func doSomething(...) (err error) {
-// 		// ...
-// 		f, err := openFile(..)
-// 		if err != nil {
-// 			return err
-// 		}
+//	func doSomething(...) (err error) {
+//		// ...
+//		f, err := openFile(..)
+//		if err != nil {
+//			return err
+//		}
 //
-// 		// multierr will call f.Close() when this function returns and
-// 		// if the operation fails, its append its error into the
-// 		// returned error.
-// 		defer multierr.AppendInvoke(&err, multierr.Close(f))
+//		// multierr will call f.Close() when this function returns and
+//		// if the operation fails, its append its error into the
+//		// returned error.
+//		defer multierr.AppendInvoke(&err, multierr.Close(f))
 //
-// 		scanner := bufio.NewScanner(f)
-// 		// Similarly, this scheduled scanner.Err to be called and
-// 		// inspected when the function returns and append its error
-// 		// into the returned error.
-// 		defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
+//		scanner := bufio.NewScanner(f)
+//		// Similarly, this scheduled scanner.Err to be called and
+//		// inspected when the function returns and append its error
+//		// into the returned error.
+//		defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
 //
-// 		// ...
-// 	}
+//		// ...
+//	}
+//
+// NOTE: If used with a defer, the error variable MUST be a named return.
 //
 // Without defer, AppendInvoke behaves exactly like AppendInto.
 //
-// 	err := // ...
-// 	multierr.AppendInvoke(&err, mutltierr.Invoke(foo))
+//	err := // ...
+//	multierr.AppendInvoke(&err, mutltierr.Invoke(foo))
 //
-// 	// ...is roughly equivalent to...
+//	// ...is roughly equivalent to...
 //
-// 	err := // ...
-// 	multierr.AppendInto(&err, foo())
+//	err := // ...
+//	multierr.AppendInto(&err, foo())
 //
 // The advantage of the indirection introduced by Invoker is to make it easy
 // to defer the invocation of a function. Without this indirection, the
 // invoked function will be evaluated at the time of the defer block rather
 // than when the function returns.
 //
-// 	// BAD: This is likely not what the caller intended. This will evaluate
-// 	// foo() right away and append its result into the error when the
-// 	// function returns.
-// 	defer multierr.AppendInto(&err, foo())
+//	// BAD: This is likely not what the caller intended. This will evaluate
+//	// foo() right away and append its result into the error when the
+//	// function returns.
+//	defer multierr.AppendInto(&err, foo())
 //
-// 	// GOOD: This will defer invocation of foo unutil the function returns.
-// 	defer multierr.AppendInvoke(&err, multierr.Invoke(foo))
+//	// GOOD: This will defer invocation of foo unutil the function returns.
+//	defer multierr.AppendInvoke(&err, multierr.Invoke(foo))
 //
 // multierr provides a few Invoker implementations out of the box for
-// convenience. See Invoker for more information.
+// convenience. See [Invoker] for more information.
 func AppendInvoke(into *error, invoker Invoker) {
 	AppendInto(into, invoker.Invoke())
 }
+
+// AppendFunc is a shorthand for [AppendInvoke].
+// It allows using function or method value directly
+// without having to wrap it into an [Invoker] interface.
+//
+//	func doSomething(...) (err error) {
+//		w, err := startWorker(...)
+//		if err != nil {
+//			return err
+//		}
+//
+//		// multierr will call w.Stop() when this function returns and
+//		// if the operation fails, it appends its error into the
+//		// returned error.
+//		defer multierr.AppendFunc(&err, w.Stop)
+//	}
+func AppendFunc(into *error, fn func() error) {
+	AppendInvoke(into, Invoke(fn))
+}

vendor/go.uber.org/multierr/error_post_go120.go

@@ -0,0 +1,48 @@
+// Copyright (c) 2017-2023 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+//go:build go1.20
+// +build go1.20
+
+package multierr
+
+// Unwrap returns a list of errors wrapped by this multierr.
+func (merr *multiError) Unwrap() []error {
+	return merr.Errors()
+}
+
+type multipleErrors interface {
+	Unwrap() []error
+}
+
+func extractErrors(err error) []error {
+	if err == nil {
+		return nil
+	}
+
+	// check if the given err is an Unwrapable error that
+	// implements multipleErrors interface.
+	eg, ok := err.(multipleErrors)
+	if !ok {
+		return []error{err}
+	}
+
+	return append(([]error)(nil), eg.Unwrap()...)
+}

vendor/go.uber.org/multierr/error_pre_go120.go

@@ -0,0 +1,79 @@
+// Copyright (c) 2017-2023 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+//go:build !go1.20
+// +build !go1.20
+
+package multierr
+
+import "errors"
+
+// Versions of Go before 1.20 did not support the Unwrap() []error method.
+// This provides a similar behavior by implementing the Is(..) and As(..)
+// methods.
+// See the errors.Join proposal for details:
+// https://github.com/golang/go/issues/53435
+
+// As attempts to find the first error in the error list that matches the type
+// of the value that target points to.
+//
+// This function allows errors.As to traverse the values stored on the
+// multierr error.
+func (merr *multiError) As(target interface{}) bool {
+	for _, err := range merr.Errors() {
+		if errors.As(err, target) {
+			return true
+		}
+	}
+	return false
+}
+
+// Is attempts to match the provided error against errors in the error list.
+//
+// This function allows errors.Is to traverse the values stored on the
+// multierr error.
+func (merr *multiError) Is(target error) bool {
+	for _, err := range merr.Errors() {
+		if errors.Is(err, target) {
+			return true
+		}
+	}
+	return false
+}
+
+func extractErrors(err error) []error {
+	if err == nil {
+		return nil
+	}
+
+	// Note that we're casting to multiError, not errorGroup. Our contract is
+	// that returned errors MAY implement errorGroup. Errors, however, only
+	// has special behavior for multierr-specific error objects.
+	//
+	// This behavior can be expanded in the future but I think it's prudent to
+	// start with as little as possible in terms of contract and possibility
+	// of misuse.
+	eg, ok := err.(*multiError)
+	if !ok {
+		return []error{err}
+	}
+
+	return append(([]error)(nil), eg.Errors()...)
+}

vendor/go.uber.org/multierr/glide.yaml

@@ -1,8 +0,0 @@
-package: go.uber.org/multierr
-import:
-- package: go.uber.org/atomic
-  version: ^1
-testImport:
-- package: github.com/stretchr/testify
-  subpackages:
-  - assert