gotosocial/vendor/github.com/gogo/protobuf/protoc-gen-gogo/descriptor/helper.go
Daniele Sluijters acc333c40b
[feature] Inherit resource limits from cgroups (#1336)
When GTS is running in a container runtime which has configured CPU or
memory limits or under an init system that uses cgroups to impose CPU
and memory limits the values the Go runtime sees for GOMAXPROCS and
GOMEMLIMIT are still based on the host resources, not the cgroup.

At least for the throttling middlewares which use GOMAXPROCS to
configure their queue size, this can result in GTS running with values
too big compared to the resources that will actuall be available to it.

This introduces 2 dependencies which can pick up resource contraints
from the current cgroup and tune the Go runtime accordingly. This should
result in the different queues being appropriately sized and in general
more predictable performance. These dependencies are a no-op on
non-Linux systems or if running in a cgroup that doesn't set a limit on
CPU or memory.

The automatic tuning of GOMEMLIMIT can be disabled by either explicitly
setting GOMEMLIMIT yourself or by setting AUTOMEMLIMIT=off. The
automatic tuning of GOMAXPROCS can similarly be counteracted by setting
GOMAXPROCS yourself.
2023-01-17 20:59:04 +00:00

391 lines
10 KiB
Go

// Protocol Buffers for Go with Gadgets
//
// Copyright (c) 2013, The GoGo Authors. All rights reserved.
// http://github.com/gogo/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package descriptor
import (
"strings"
)
func (msg *DescriptorProto) GetMapFields() (*FieldDescriptorProto, *FieldDescriptorProto) {
if !msg.GetOptions().GetMapEntry() {
return nil, nil
}
return msg.GetField()[0], msg.GetField()[1]
}
func dotToUnderscore(r rune) rune {
if r == '.' {
return '_'
}
return r
}
func (field *FieldDescriptorProto) WireType() (wire int) {
switch *field.Type {
case FieldDescriptorProto_TYPE_DOUBLE:
return 1
case FieldDescriptorProto_TYPE_FLOAT:
return 5
case FieldDescriptorProto_TYPE_INT64:
return 0
case FieldDescriptorProto_TYPE_UINT64:
return 0
case FieldDescriptorProto_TYPE_INT32:
return 0
case FieldDescriptorProto_TYPE_UINT32:
return 0
case FieldDescriptorProto_TYPE_FIXED64:
return 1
case FieldDescriptorProto_TYPE_FIXED32:
return 5
case FieldDescriptorProto_TYPE_BOOL:
return 0
case FieldDescriptorProto_TYPE_STRING:
return 2
case FieldDescriptorProto_TYPE_GROUP:
return 2
case FieldDescriptorProto_TYPE_MESSAGE:
return 2
case FieldDescriptorProto_TYPE_BYTES:
return 2
case FieldDescriptorProto_TYPE_ENUM:
return 0
case FieldDescriptorProto_TYPE_SFIXED32:
return 5
case FieldDescriptorProto_TYPE_SFIXED64:
return 1
case FieldDescriptorProto_TYPE_SINT32:
return 0
case FieldDescriptorProto_TYPE_SINT64:
return 0
}
panic("unreachable")
}
func (field *FieldDescriptorProto) GetKeyUint64() (x uint64) {
packed := field.IsPacked()
wireType := field.WireType()
fieldNumber := field.GetNumber()
if packed {
wireType = 2
}
x = uint64(uint32(fieldNumber)<<3 | uint32(wireType))
return x
}
func (field *FieldDescriptorProto) GetKey3Uint64() (x uint64) {
packed := field.IsPacked3()
wireType := field.WireType()
fieldNumber := field.GetNumber()
if packed {
wireType = 2
}
x = uint64(uint32(fieldNumber)<<3 | uint32(wireType))
return x
}
func (field *FieldDescriptorProto) GetKey() []byte {
x := field.GetKeyUint64()
i := 0
keybuf := make([]byte, 0)
for i = 0; x > 127; i++ {
keybuf = append(keybuf, 0x80|uint8(x&0x7F))
x >>= 7
}
keybuf = append(keybuf, uint8(x))
return keybuf
}
func (field *FieldDescriptorProto) GetKey3() []byte {
x := field.GetKey3Uint64()
i := 0
keybuf := make([]byte, 0)
for i = 0; x > 127; i++ {
keybuf = append(keybuf, 0x80|uint8(x&0x7F))
x >>= 7
}
keybuf = append(keybuf, uint8(x))
return keybuf
}
func (desc *FileDescriptorSet) GetField(packageName, messageName, fieldName string) *FieldDescriptorProto {
msg := desc.GetMessage(packageName, messageName)
if msg == nil {
return nil
}
for _, field := range msg.GetField() {
if field.GetName() == fieldName {
return field
}
}
return nil
}
func (file *FileDescriptorProto) GetMessage(typeName string) *DescriptorProto {
for _, msg := range file.GetMessageType() {
if msg.GetName() == typeName {
return msg
}
nes := file.GetNestedMessage(msg, strings.TrimPrefix(typeName, msg.GetName()+"."))
if nes != nil {
return nes
}
}
return nil
}
func (file *FileDescriptorProto) GetNestedMessage(msg *DescriptorProto, typeName string) *DescriptorProto {
for _, nes := range msg.GetNestedType() {
if nes.GetName() == typeName {
return nes
}
res := file.GetNestedMessage(nes, strings.TrimPrefix(typeName, nes.GetName()+"."))
if res != nil {
return res
}
}
return nil
}
func (desc *FileDescriptorSet) GetMessage(packageName string, typeName string) *DescriptorProto {
for _, file := range desc.GetFile() {
if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
continue
}
for _, msg := range file.GetMessageType() {
if msg.GetName() == typeName {
return msg
}
}
for _, msg := range file.GetMessageType() {
for _, nes := range msg.GetNestedType() {
if nes.GetName() == typeName {
return nes
}
if msg.GetName()+"."+nes.GetName() == typeName {
return nes
}
}
}
}
return nil
}
func (desc *FileDescriptorSet) IsProto3(packageName string, typeName string) bool {
for _, file := range desc.GetFile() {
if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
continue
}
for _, msg := range file.GetMessageType() {
if msg.GetName() == typeName {
return file.GetSyntax() == "proto3"
}
}
for _, msg := range file.GetMessageType() {
for _, nes := range msg.GetNestedType() {
if nes.GetName() == typeName {
return file.GetSyntax() == "proto3"
}
if msg.GetName()+"."+nes.GetName() == typeName {
return file.GetSyntax() == "proto3"
}
}
}
}
return false
}
func (msg *DescriptorProto) IsExtendable() bool {
return len(msg.GetExtensionRange()) > 0
}
func (desc *FileDescriptorSet) FindExtension(packageName string, typeName string, fieldName string) (extPackageName string, field *FieldDescriptorProto) {
parent := desc.GetMessage(packageName, typeName)
if parent == nil {
return "", nil
}
if !parent.IsExtendable() {
return "", nil
}
extendee := "." + packageName + "." + typeName
for _, file := range desc.GetFile() {
for _, ext := range file.GetExtension() {
if strings.Map(dotToUnderscore, file.GetPackage()) == strings.Map(dotToUnderscore, packageName) {
if !(ext.GetExtendee() == typeName || ext.GetExtendee() == extendee) {
continue
}
} else {
if ext.GetExtendee() != extendee {
continue
}
}
if ext.GetName() == fieldName {
return file.GetPackage(), ext
}
}
}
return "", nil
}
func (desc *FileDescriptorSet) FindExtensionByFieldNumber(packageName string, typeName string, fieldNum int32) (extPackageName string, field *FieldDescriptorProto) {
parent := desc.GetMessage(packageName, typeName)
if parent == nil {
return "", nil
}
if !parent.IsExtendable() {
return "", nil
}
extendee := "." + packageName + "." + typeName
for _, file := range desc.GetFile() {
for _, ext := range file.GetExtension() {
if strings.Map(dotToUnderscore, file.GetPackage()) == strings.Map(dotToUnderscore, packageName) {
if !(ext.GetExtendee() == typeName || ext.GetExtendee() == extendee) {
continue
}
} else {
if ext.GetExtendee() != extendee {
continue
}
}
if ext.GetNumber() == fieldNum {
return file.GetPackage(), ext
}
}
}
return "", nil
}
func (desc *FileDescriptorSet) FindMessage(packageName string, typeName string, fieldName string) (msgPackageName string, msgName string) {
parent := desc.GetMessage(packageName, typeName)
if parent == nil {
return "", ""
}
field := parent.GetFieldDescriptor(fieldName)
if field == nil {
var extPackageName string
extPackageName, field = desc.FindExtension(packageName, typeName, fieldName)
if field == nil {
return "", ""
}
packageName = extPackageName
}
typeNames := strings.Split(field.GetTypeName(), ".")
if len(typeNames) == 1 {
msg := desc.GetMessage(packageName, typeName)
if msg == nil {
return "", ""
}
return packageName, msg.GetName()
}
if len(typeNames) > 2 {
for i := 1; i < len(typeNames)-1; i++ {
packageName = strings.Join(typeNames[1:len(typeNames)-i], ".")
typeName = strings.Join(typeNames[len(typeNames)-i:], ".")
msg := desc.GetMessage(packageName, typeName)
if msg != nil {
typeNames := strings.Split(msg.GetName(), ".")
if len(typeNames) == 1 {
return packageName, msg.GetName()
}
return strings.Join(typeNames[1:len(typeNames)-1], "."), typeNames[len(typeNames)-1]
}
}
}
return "", ""
}
func (msg *DescriptorProto) GetFieldDescriptor(fieldName string) *FieldDescriptorProto {
for _, field := range msg.GetField() {
if field.GetName() == fieldName {
return field
}
}
return nil
}
func (desc *FileDescriptorSet) GetEnum(packageName string, typeName string) *EnumDescriptorProto {
for _, file := range desc.GetFile() {
if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
continue
}
for _, enum := range file.GetEnumType() {
if enum.GetName() == typeName {
return enum
}
}
}
return nil
}
func (f *FieldDescriptorProto) IsEnum() bool {
return *f.Type == FieldDescriptorProto_TYPE_ENUM
}
func (f *FieldDescriptorProto) IsMessage() bool {
return *f.Type == FieldDescriptorProto_TYPE_MESSAGE
}
func (f *FieldDescriptorProto) IsBytes() bool {
return *f.Type == FieldDescriptorProto_TYPE_BYTES
}
func (f *FieldDescriptorProto) IsRepeated() bool {
return f.Label != nil && *f.Label == FieldDescriptorProto_LABEL_REPEATED
}
func (f *FieldDescriptorProto) IsString() bool {
return *f.Type == FieldDescriptorProto_TYPE_STRING
}
func (f *FieldDescriptorProto) IsBool() bool {
return *f.Type == FieldDescriptorProto_TYPE_BOOL
}
func (f *FieldDescriptorProto) IsRequired() bool {
return f.Label != nil && *f.Label == FieldDescriptorProto_LABEL_REQUIRED
}
func (f *FieldDescriptorProto) IsPacked() bool {
return f.Options != nil && f.GetOptions().GetPacked()
}
func (f *FieldDescriptorProto) IsPacked3() bool {
if f.IsRepeated() && f.IsScalar() {
if f.Options == nil || f.GetOptions().Packed == nil {
return true
}
return f.Options != nil && f.GetOptions().GetPacked()
}
return false
}
func (m *DescriptorProto) HasExtension() bool {
return len(m.ExtensionRange) > 0
}