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minio/cmd/storage-rest-common_gen.go

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perf: websocket grid connectivity for all internode communication (#18461) This PR adds a WebSocket grid feature that allows servers to communicate via a single two-way connection. There are two request types: * Single requests, which are `[]byte => ([]byte, error)`. This is for efficient small roundtrips with small payloads. * Streaming requests which are `[]byte, chan []byte => chan []byte (and error)`, which allows for different combinations of full two-way streams with an initial payload. Only a single stream is created between two machines - and there is, as such, no server/client relation since both sides can initiate and handle requests. Which server initiates the request is decided deterministically on the server names. Requests are made through a mux client and server, which handles message passing, congestion, cancelation, timeouts, etc. If a connection is lost, all requests are canceled, and the calling server will try to reconnect. Registered handlers can operate directly on byte slices or use a higher-level generics abstraction. There is no versioning of handlers/clients, and incompatible changes should be handled by adding new handlers. The request path can be changed to a new one for any protocol changes. First, all servers create a "Manager." The manager must know its address as well as all remote addresses. This will manage all connections. To get a connection to any remote, ask the manager to provide it given the remote address using. ``` func (m *Manager) Connection(host string) *Connection ``` All serverside handlers must also be registered on the manager. This will make sure that all incoming requests are served. The number of in-flight requests and responses must also be given for streaming requests. The "Connection" returned manages the mux-clients. Requests issued to the connection will be sent to the remote. * `func (c *Connection) Request(ctx context.Context, h HandlerID, req []byte) ([]byte, error)` performs a single request and returns the result. Any deadline provided on the request is forwarded to the server, and canceling the context will make the function return at once. * `func (c *Connection) NewStream(ctx context.Context, h HandlerID, payload []byte) (st *Stream, err error)` will initiate a remote call and send the initial payload. ```Go // A Stream is a two-way stream. // All responses *must* be read by the caller. // If the call is canceled through the context, //The appropriate error will be returned. type Stream struct { // Responses from the remote server. // Channel will be closed after an error or when the remote closes. // All responses *must* be read by the caller until either an error is returned or the channel is closed. // Canceling the context will cause the context cancellation error to be returned. Responses <-chan Response // Requests sent to the server. // If the handler is defined with 0 incoming capacity this will be nil. // Channel *must* be closed to signal the end of the stream. // If the request context is canceled, the stream will no longer process requests. Requests chan<- []byte } type Response struct { Msg []byte Err error } ``` There are generic versions of the server/client handlers that allow the use of type safe implementations for data types that support msgpack marshal/unmarshal.
2023-11-20 20:09:35 -05:00
package cmd
// Code generated by github.com/tinylib/msgp DO NOT EDIT.
import (
"github.com/tinylib/msgp/msgp"
)
// DecodeMsg implements msgp.Decodable
func (z *nsScannerOptions) DecodeMsg(dc *msgp.Reader) (err error) {
var field []byte
_ = field
var zb0001 uint32
zb0001, err = dc.ReadMapHeader()
if err != nil {
err = msgp.WrapError(err)
return
}
for zb0001 > 0 {
zb0001--
field, err = dc.ReadMapKeyPtr()
if err != nil {
err = msgp.WrapError(err)
return
}
switch msgp.UnsafeString(field) {
case "id":
z.DiskID, err = dc.ReadString()
if err != nil {
err = msgp.WrapError(err, "DiskID")
return
}
case "m":
z.ScanMode, err = dc.ReadInt()
if err != nil {
err = msgp.WrapError(err, "ScanMode")
return
}
case "c":
if dc.IsNil() {
err = dc.ReadNil()
if err != nil {
err = msgp.WrapError(err, "Cache")
return
}
z.Cache = nil
} else {
if z.Cache == nil {
z.Cache = new(dataUsageCache)
}
err = z.Cache.DecodeMsg(dc)
if err != nil {
err = msgp.WrapError(err, "Cache")
return
}
}
default:
err = dc.Skip()
if err != nil {
err = msgp.WrapError(err)
return
}
}
}
return
}
// EncodeMsg implements msgp.Encodable
func (z *nsScannerOptions) EncodeMsg(en *msgp.Writer) (err error) {
// map header, size 3
// write "id"
err = en.Append(0x83, 0xa2, 0x69, 0x64)
if err != nil {
return
}
err = en.WriteString(z.DiskID)
if err != nil {
err = msgp.WrapError(err, "DiskID")
return
}
// write "m"
err = en.Append(0xa1, 0x6d)
if err != nil {
return
}
err = en.WriteInt(z.ScanMode)
if err != nil {
err = msgp.WrapError(err, "ScanMode")
return
}
// write "c"
err = en.Append(0xa1, 0x63)
if err != nil {
return
}
if z.Cache == nil {
err = en.WriteNil()
if err != nil {
return
}
} else {
err = z.Cache.EncodeMsg(en)
if err != nil {
err = msgp.WrapError(err, "Cache")
return
}
}
return
}
// MarshalMsg implements msgp.Marshaler
func (z *nsScannerOptions) MarshalMsg(b []byte) (o []byte, err error) {
o = msgp.Require(b, z.Msgsize())
// map header, size 3
// string "id"
o = append(o, 0x83, 0xa2, 0x69, 0x64)
o = msgp.AppendString(o, z.DiskID)
// string "m"
o = append(o, 0xa1, 0x6d)
o = msgp.AppendInt(o, z.ScanMode)
// string "c"
o = append(o, 0xa1, 0x63)
if z.Cache == nil {
o = msgp.AppendNil(o)
} else {
o, err = z.Cache.MarshalMsg(o)
if err != nil {
err = msgp.WrapError(err, "Cache")
return
}
}
return
}
// UnmarshalMsg implements msgp.Unmarshaler
func (z *nsScannerOptions) UnmarshalMsg(bts []byte) (o []byte, err error) {
var field []byte
_ = field
var zb0001 uint32
zb0001, bts, err = msgp.ReadMapHeaderBytes(bts)
if err != nil {
err = msgp.WrapError(err)
return
}
for zb0001 > 0 {
zb0001--
field, bts, err = msgp.ReadMapKeyZC(bts)
if err != nil {
err = msgp.WrapError(err)
return
}
switch msgp.UnsafeString(field) {
case "id":
z.DiskID, bts, err = msgp.ReadStringBytes(bts)
if err != nil {
err = msgp.WrapError(err, "DiskID")
return
}
case "m":
z.ScanMode, bts, err = msgp.ReadIntBytes(bts)
if err != nil {
err = msgp.WrapError(err, "ScanMode")
return
}
case "c":
if msgp.IsNil(bts) {
bts, err = msgp.ReadNilBytes(bts)
if err != nil {
return
}
z.Cache = nil
} else {
if z.Cache == nil {
z.Cache = new(dataUsageCache)
}
bts, err = z.Cache.UnmarshalMsg(bts)
if err != nil {
err = msgp.WrapError(err, "Cache")
return
}
}
default:
bts, err = msgp.Skip(bts)
if err != nil {
err = msgp.WrapError(err)
return
}
}
}
o = bts
return
}
// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *nsScannerOptions) Msgsize() (s int) {
s = 1 + 3 + msgp.StringPrefixSize + len(z.DiskID) + 2 + msgp.IntSize + 2
if z.Cache == nil {
s += msgp.NilSize
} else {
s += z.Cache.Msgsize()
}
return
}
// DecodeMsg implements msgp.Decodable
func (z *nsScannerResp) DecodeMsg(dc *msgp.Reader) (err error) {
var field []byte
_ = field
var zb0001 uint32
zb0001, err = dc.ReadMapHeader()
if err != nil {
err = msgp.WrapError(err)
return
}
for zb0001 > 0 {
zb0001--
field, err = dc.ReadMapKeyPtr()
if err != nil {
err = msgp.WrapError(err)
return
}
switch msgp.UnsafeString(field) {
case "u":
if dc.IsNil() {
err = dc.ReadNil()
if err != nil {
err = msgp.WrapError(err, "Update")
return
}
z.Update = nil
} else {
if z.Update == nil {
z.Update = new(dataUsageEntry)
}
err = z.Update.DecodeMsg(dc)
if err != nil {
err = msgp.WrapError(err, "Update")
return
}
}
case "f":
if dc.IsNil() {
err = dc.ReadNil()
if err != nil {
err = msgp.WrapError(err, "Final")
return
}
z.Final = nil
} else {
if z.Final == nil {
z.Final = new(dataUsageCache)
}
err = z.Final.DecodeMsg(dc)
if err != nil {
err = msgp.WrapError(err, "Final")
return
}
}
default:
err = dc.Skip()
if err != nil {
err = msgp.WrapError(err)
return
}
}
}
return
}
// EncodeMsg implements msgp.Encodable
func (z *nsScannerResp) EncodeMsg(en *msgp.Writer) (err error) {
// map header, size 2
// write "u"
err = en.Append(0x82, 0xa1, 0x75)
if err != nil {
return
}
if z.Update == nil {
err = en.WriteNil()
if err != nil {
return
}
} else {
err = z.Update.EncodeMsg(en)
if err != nil {
err = msgp.WrapError(err, "Update")
return
}
}
// write "f"
err = en.Append(0xa1, 0x66)
if err != nil {
return
}
if z.Final == nil {
err = en.WriteNil()
if err != nil {
return
}
} else {
err = z.Final.EncodeMsg(en)
if err != nil {
err = msgp.WrapError(err, "Final")
return
}
}
return
}
// MarshalMsg implements msgp.Marshaler
func (z *nsScannerResp) MarshalMsg(b []byte) (o []byte, err error) {
o = msgp.Require(b, z.Msgsize())
// map header, size 2
// string "u"
o = append(o, 0x82, 0xa1, 0x75)
if z.Update == nil {
o = msgp.AppendNil(o)
} else {
o, err = z.Update.MarshalMsg(o)
if err != nil {
err = msgp.WrapError(err, "Update")
return
}
}
// string "f"
o = append(o, 0xa1, 0x66)
if z.Final == nil {
o = msgp.AppendNil(o)
} else {
o, err = z.Final.MarshalMsg(o)
if err != nil {
err = msgp.WrapError(err, "Final")
return
}
}
return
}
// UnmarshalMsg implements msgp.Unmarshaler
func (z *nsScannerResp) UnmarshalMsg(bts []byte) (o []byte, err error) {
var field []byte
_ = field
var zb0001 uint32
zb0001, bts, err = msgp.ReadMapHeaderBytes(bts)
if err != nil {
err = msgp.WrapError(err)
return
}
for zb0001 > 0 {
zb0001--
field, bts, err = msgp.ReadMapKeyZC(bts)
if err != nil {
err = msgp.WrapError(err)
return
}
switch msgp.UnsafeString(field) {
case "u":
if msgp.IsNil(bts) {
bts, err = msgp.ReadNilBytes(bts)
if err != nil {
return
}
z.Update = nil
} else {
if z.Update == nil {
z.Update = new(dataUsageEntry)
}
bts, err = z.Update.UnmarshalMsg(bts)
if err != nil {
err = msgp.WrapError(err, "Update")
return
}
}
case "f":
if msgp.IsNil(bts) {
bts, err = msgp.ReadNilBytes(bts)
if err != nil {
return
}
z.Final = nil
} else {
if z.Final == nil {
z.Final = new(dataUsageCache)
}
bts, err = z.Final.UnmarshalMsg(bts)
if err != nil {
err = msgp.WrapError(err, "Final")
return
}
}
default:
bts, err = msgp.Skip(bts)
if err != nil {
err = msgp.WrapError(err)
return
}
}
}
o = bts
return
}
// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *nsScannerResp) Msgsize() (s int) {
s = 1 + 2
if z.Update == nil {
s += msgp.NilSize
} else {
s += z.Update.Msgsize()
}
s += 2
if z.Final == nil {
s += msgp.NilSize
} else {
s += z.Final.Msgsize()
}
return
}