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minio/cmd/metacache-walk_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 *WalkDirOptions) 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 "Bucket":
z.Bucket, err = dc.ReadString()
if err != nil {
err = msgp.WrapError(err, "Bucket")
return
}
case "BaseDir":
z.BaseDir, err = dc.ReadString()
if err != nil {
err = msgp.WrapError(err, "BaseDir")
return
}
case "Recursive":
z.Recursive, err = dc.ReadBool()
if err != nil {
err = msgp.WrapError(err, "Recursive")
return
}
case "ReportNotFound":
z.ReportNotFound, err = dc.ReadBool()
if err != nil {
err = msgp.WrapError(err, "ReportNotFound")
return
}
case "FilterPrefix":
z.FilterPrefix, err = dc.ReadString()
if err != nil {
err = msgp.WrapError(err, "FilterPrefix")
return
}
case "ForwardTo":
z.ForwardTo, err = dc.ReadString()
if err != nil {
err = msgp.WrapError(err, "ForwardTo")
return
}
case "Limit":
z.Limit, err = dc.ReadInt()
if err != nil {
err = msgp.WrapError(err, "Limit")
return
}
case "DiskID":
z.DiskID, err = dc.ReadString()
if err != nil {
err = msgp.WrapError(err, "DiskID")
return
}
default:
err = dc.Skip()
if err != nil {
err = msgp.WrapError(err)
return
}
}
}
return
}
// EncodeMsg implements msgp.Encodable
func (z *WalkDirOptions) EncodeMsg(en *msgp.Writer) (err error) {
// map header, size 8
// write "Bucket"
err = en.Append(0x88, 0xa6, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74)
if err != nil {
return
}
err = en.WriteString(z.Bucket)
if err != nil {
err = msgp.WrapError(err, "Bucket")
return
}
// write "BaseDir"
err = en.Append(0xa7, 0x42, 0x61, 0x73, 0x65, 0x44, 0x69, 0x72)
if err != nil {
return
}
err = en.WriteString(z.BaseDir)
if err != nil {
err = msgp.WrapError(err, "BaseDir")
return
}
// write "Recursive"
err = en.Append(0xa9, 0x52, 0x65, 0x63, 0x75, 0x72, 0x73, 0x69, 0x76, 0x65)
if err != nil {
return
}
err = en.WriteBool(z.Recursive)
if err != nil {
err = msgp.WrapError(err, "Recursive")
return
}
// write "ReportNotFound"
err = en.Append(0xae, 0x52, 0x65, 0x70, 0x6f, 0x72, 0x74, 0x4e, 0x6f, 0x74, 0x46, 0x6f, 0x75, 0x6e, 0x64)
if err != nil {
return
}
err = en.WriteBool(z.ReportNotFound)
if err != nil {
err = msgp.WrapError(err, "ReportNotFound")
return
}
// write "FilterPrefix"
err = en.Append(0xac, 0x46, 0x69, 0x6c, 0x74, 0x65, 0x72, 0x50, 0x72, 0x65, 0x66, 0x69, 0x78)
if err != nil {
return
}
err = en.WriteString(z.FilterPrefix)
if err != nil {
err = msgp.WrapError(err, "FilterPrefix")
return
}
// write "ForwardTo"
err = en.Append(0xa9, 0x46, 0x6f, 0x72, 0x77, 0x61, 0x72, 0x64, 0x54, 0x6f)
if err != nil {
return
}
err = en.WriteString(z.ForwardTo)
if err != nil {
err = msgp.WrapError(err, "ForwardTo")
return
}
// write "Limit"
err = en.Append(0xa5, 0x4c, 0x69, 0x6d, 0x69, 0x74)
if err != nil {
return
}
err = en.WriteInt(z.Limit)
if err != nil {
err = msgp.WrapError(err, "Limit")
return
}
// write "DiskID"
err = en.Append(0xa6, 0x44, 0x69, 0x73, 0x6b, 0x49, 0x44)
if err != nil {
return
}
err = en.WriteString(z.DiskID)
if err != nil {
err = msgp.WrapError(err, "DiskID")
return
}
return
}
// MarshalMsg implements msgp.Marshaler
func (z *WalkDirOptions) MarshalMsg(b []byte) (o []byte, err error) {
o = msgp.Require(b, z.Msgsize())
// map header, size 8
// string "Bucket"
o = append(o, 0x88, 0xa6, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74)
o = msgp.AppendString(o, z.Bucket)
// string "BaseDir"
o = append(o, 0xa7, 0x42, 0x61, 0x73, 0x65, 0x44, 0x69, 0x72)
o = msgp.AppendString(o, z.BaseDir)
// string "Recursive"
o = append(o, 0xa9, 0x52, 0x65, 0x63, 0x75, 0x72, 0x73, 0x69, 0x76, 0x65)
o = msgp.AppendBool(o, z.Recursive)
// string "ReportNotFound"
o = append(o, 0xae, 0x52, 0x65, 0x70, 0x6f, 0x72, 0x74, 0x4e, 0x6f, 0x74, 0x46, 0x6f, 0x75, 0x6e, 0x64)
o = msgp.AppendBool(o, z.ReportNotFound)
// string "FilterPrefix"
o = append(o, 0xac, 0x46, 0x69, 0x6c, 0x74, 0x65, 0x72, 0x50, 0x72, 0x65, 0x66, 0x69, 0x78)
o = msgp.AppendString(o, z.FilterPrefix)
// string "ForwardTo"
o = append(o, 0xa9, 0x46, 0x6f, 0x72, 0x77, 0x61, 0x72, 0x64, 0x54, 0x6f)
o = msgp.AppendString(o, z.ForwardTo)
// string "Limit"
o = append(o, 0xa5, 0x4c, 0x69, 0x6d, 0x69, 0x74)
o = msgp.AppendInt(o, z.Limit)
// string "DiskID"
o = append(o, 0xa6, 0x44, 0x69, 0x73, 0x6b, 0x49, 0x44)
o = msgp.AppendString(o, z.DiskID)
return
}
// UnmarshalMsg implements msgp.Unmarshaler
func (z *WalkDirOptions) 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 "Bucket":
z.Bucket, bts, err = msgp.ReadStringBytes(bts)
if err != nil {
err = msgp.WrapError(err, "Bucket")
return
}
case "BaseDir":
z.BaseDir, bts, err = msgp.ReadStringBytes(bts)
if err != nil {
err = msgp.WrapError(err, "BaseDir")
return
}
case "Recursive":
z.Recursive, bts, err = msgp.ReadBoolBytes(bts)
if err != nil {
err = msgp.WrapError(err, "Recursive")
return
}
case "ReportNotFound":
z.ReportNotFound, bts, err = msgp.ReadBoolBytes(bts)
if err != nil {
err = msgp.WrapError(err, "ReportNotFound")
return
}
case "FilterPrefix":
z.FilterPrefix, bts, err = msgp.ReadStringBytes(bts)
if err != nil {
err = msgp.WrapError(err, "FilterPrefix")
return
}
case "ForwardTo":
z.ForwardTo, bts, err = msgp.ReadStringBytes(bts)
if err != nil {
err = msgp.WrapError(err, "ForwardTo")
return
}
case "Limit":
z.Limit, bts, err = msgp.ReadIntBytes(bts)
if err != nil {
err = msgp.WrapError(err, "Limit")
return
}
case "DiskID":
z.DiskID, bts, err = msgp.ReadStringBytes(bts)
if err != nil {
err = msgp.WrapError(err, "DiskID")
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 *WalkDirOptions) Msgsize() (s int) {
s = 1 + 7 + msgp.StringPrefixSize + len(z.Bucket) + 8 + msgp.StringPrefixSize + len(z.BaseDir) + 10 + msgp.BoolSize + 15 + msgp.BoolSize + 13 + msgp.StringPrefixSize + len(z.FilterPrefix) + 10 + msgp.StringPrefixSize + len(z.ForwardTo) + 6 + msgp.IntSize + 7 + msgp.StringPrefixSize + len(z.DiskID)
return
}