vendor: update buildkit to master@8b7bcb900d3c

Signed-off-by: Justin Chadwell <me@jedevc.com>
This commit is contained in:
Justin Chadwell
2023-03-29 12:38:36 +01:00
parent c6cdcb02cf
commit 9541457c54
416 changed files with 24398 additions and 16253 deletions

View File

@ -24,6 +24,10 @@ import (
"github.com/go-logr/logr"
)
type textWriter interface {
WriteText(*bytes.Buffer)
}
// WithValues implements LogSink.WithValues. The old key/value pairs are
// assumed to be well-formed, the new ones are checked and padded if
// necessary. It returns a new slice.
@ -91,11 +95,66 @@ func MergeKVs(first, second []interface{}) []interface{} {
return merged
}
type Formatter struct {
AnyToStringHook AnyToStringFunc
}
type AnyToStringFunc func(v interface{}) string
// MergeKVsInto is a variant of MergeKVs which directly formats the key/value
// pairs into a buffer.
func (f Formatter) MergeAndFormatKVs(b *bytes.Buffer, first, second []interface{}) {
if len(first) == 0 && len(second) == 0 {
// Nothing to do at all.
return
}
if len(first) == 0 && len(second)%2 == 0 {
// Nothing to be overridden, second slice is well-formed
// and can be used directly.
for i := 0; i < len(second); i += 2 {
f.KVFormat(b, second[i], second[i+1])
}
return
}
// Determine which keys are in the second slice so that we can skip
// them when iterating over the first one. The code intentionally
// favors performance over completeness: we assume that keys are string
// constants and thus compare equal when the string values are equal. A
// string constant being overridden by, for example, a fmt.Stringer is
// not handled.
overrides := map[interface{}]bool{}
for i := 0; i < len(second); i += 2 {
overrides[second[i]] = true
}
for i := 0; i < len(first); i += 2 {
key := first[i]
if overrides[key] {
continue
}
f.KVFormat(b, key, first[i+1])
}
// Round down.
l := len(second)
l = l / 2 * 2
for i := 1; i < l; i += 2 {
f.KVFormat(b, second[i-1], second[i])
}
if len(second)%2 == 1 {
f.KVFormat(b, second[len(second)-1], missingValue)
}
}
func MergeAndFormatKVs(b *bytes.Buffer, first, second []interface{}) {
Formatter{}.MergeAndFormatKVs(b, first, second)
}
const missingValue = "(MISSING)"
// KVListFormat serializes all key/value pairs into the provided buffer.
// A space gets inserted before the first pair and between each pair.
func KVListFormat(b *bytes.Buffer, keysAndValues ...interface{}) {
func (f Formatter) KVListFormat(b *bytes.Buffer, keysAndValues ...interface{}) {
for i := 0; i < len(keysAndValues); i += 2 {
var v interface{}
k := keysAndValues[i]
@ -104,69 +163,93 @@ func KVListFormat(b *bytes.Buffer, keysAndValues ...interface{}) {
} else {
v = missingValue
}
b.WriteByte(' ')
// Keys are assumed to be well-formed according to
// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/migration-to-structured-logging.md#name-arguments
// for the sake of performance. Keys with spaces,
// special characters, etc. will break parsing.
if sK, ok := k.(string); ok {
// Avoid one allocation when the key is a string, which
// normally it should be.
b.WriteString(sK)
} else {
b.WriteString(fmt.Sprintf("%s", k))
}
// The type checks are sorted so that more frequently used ones
// come first because that is then faster in the common
// cases. In Kubernetes, ObjectRef (a Stringer) is more common
// than plain strings
// (https://github.com/kubernetes/kubernetes/pull/106594#issuecomment-975526235).
switch v := v.(type) {
case fmt.Stringer:
writeStringValue(b, true, StringerToString(v))
case string:
writeStringValue(b, true, v)
case error:
writeStringValue(b, true, ErrorToString(v))
case logr.Marshaler:
value := MarshalerToValue(v)
// A marshaler that returns a string is useful for
// delayed formatting of complex values. We treat this
// case like a normal string. This is useful for
// multi-line support.
//
// We could do this by recursively formatting a value,
// but that comes with the risk of infinite recursion
// if a marshaler returns itself. Instead we call it
// only once and rely on it returning the intended
// value directly.
switch value := value.(type) {
case string:
writeStringValue(b, true, value)
default:
writeStringValue(b, false, fmt.Sprintf("%+v", value))
}
case []byte:
// In https://github.com/kubernetes/klog/pull/237 it was decided
// to format byte slices with "%+q". The advantages of that are:
// - readable output if the bytes happen to be printable
// - non-printable bytes get represented as unicode escape
// sequences (\uxxxx)
//
// The downsides are that we cannot use the faster
// strconv.Quote here and that multi-line output is not
// supported. If developers know that a byte array is
// printable and they want multi-line output, they can
// convert the value to string before logging it.
b.WriteByte('=')
b.WriteString(fmt.Sprintf("%+q", v))
default:
writeStringValue(b, false, fmt.Sprintf("%+v", v))
}
f.KVFormat(b, k, v)
}
}
func KVListFormat(b *bytes.Buffer, keysAndValues ...interface{}) {
Formatter{}.KVListFormat(b, keysAndValues...)
}
// KVFormat serializes one key/value pair into the provided buffer.
// A space gets inserted before the pair.
func (f Formatter) KVFormat(b *bytes.Buffer, k, v interface{}) {
b.WriteByte(' ')
// Keys are assumed to be well-formed according to
// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/migration-to-structured-logging.md#name-arguments
// for the sake of performance. Keys with spaces,
// special characters, etc. will break parsing.
if sK, ok := k.(string); ok {
// Avoid one allocation when the key is a string, which
// normally it should be.
b.WriteString(sK)
} else {
b.WriteString(fmt.Sprintf("%s", k))
}
// The type checks are sorted so that more frequently used ones
// come first because that is then faster in the common
// cases. In Kubernetes, ObjectRef (a Stringer) is more common
// than plain strings
// (https://github.com/kubernetes/kubernetes/pull/106594#issuecomment-975526235).
switch v := v.(type) {
case textWriter:
writeTextWriterValue(b, v)
case fmt.Stringer:
writeStringValue(b, true, StringerToString(v))
case string:
writeStringValue(b, true, v)
case error:
writeStringValue(b, true, ErrorToString(v))
case logr.Marshaler:
value := MarshalerToValue(v)
// A marshaler that returns a string is useful for
// delayed formatting of complex values. We treat this
// case like a normal string. This is useful for
// multi-line support.
//
// We could do this by recursively formatting a value,
// but that comes with the risk of infinite recursion
// if a marshaler returns itself. Instead we call it
// only once and rely on it returning the intended
// value directly.
switch value := value.(type) {
case string:
writeStringValue(b, true, value)
default:
writeStringValue(b, false, f.AnyToString(value))
}
case []byte:
// In https://github.com/kubernetes/klog/pull/237 it was decided
// to format byte slices with "%+q". The advantages of that are:
// - readable output if the bytes happen to be printable
// - non-printable bytes get represented as unicode escape
// sequences (\uxxxx)
//
// The downsides are that we cannot use the faster
// strconv.Quote here and that multi-line output is not
// supported. If developers know that a byte array is
// printable and they want multi-line output, they can
// convert the value to string before logging it.
b.WriteByte('=')
b.WriteString(fmt.Sprintf("%+q", v))
default:
writeStringValue(b, false, f.AnyToString(v))
}
}
func KVFormat(b *bytes.Buffer, k, v interface{}) {
Formatter{}.KVFormat(b, k, v)
}
// AnyToString is the historic fallback formatter.
func (f Formatter) AnyToString(v interface{}) string {
if f.AnyToStringHook != nil {
return f.AnyToStringHook(v)
}
return fmt.Sprintf("%+v", v)
}
// StringerToString converts a Stringer to a string,
// handling panics if they occur.
func StringerToString(s fmt.Stringer) (ret string) {
@ -203,6 +286,16 @@ func ErrorToString(err error) (ret string) {
return
}
func writeTextWriterValue(b *bytes.Buffer, v textWriter) {
b.WriteRune('=')
defer func() {
if err := recover(); err != nil {
fmt.Fprintf(b, `"<panic: %s>"`, err)
}
}()
v.WriteText(b)
}
func writeStringValue(b *bytes.Buffer, quote bool, v string) {
data := []byte(v)
index := bytes.IndexByte(data, '\n')