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.
2023-11-21 09:09:35 +08:00
|
|
|
// Copyright (c) 2015-2023 MinIO, Inc.
|
|
|
|
|
//
|
|
|
|
|
// This file is part of MinIO Object Storage stack
|
|
|
|
|
//
|
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
|
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
|
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
|
|
|
// (at your option) any later version.
|
|
|
|
|
//
|
|
|
|
|
// This program is distributed in the hope that it will be useful
|
|
|
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
|
// GNU Affero General Public License for more details.
|
|
|
|
|
//
|
|
|
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
|
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
|
|
package cmd
|
|
|
|
|
|
|
|
|
|
import (
|
|
|
|
|
"context"
|
|
|
|
|
"crypto/tls"
|
|
|
|
|
"sync/atomic"
|
|
|
|
|
|
|
|
|
|
"github.com/minio/minio/internal/fips"
|
|
|
|
|
"github.com/minio/minio/internal/grid"
|
|
|
|
|
xhttp "github.com/minio/minio/internal/http"
|
|
|
|
|
"github.com/minio/minio/internal/rest"
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
// globalGrid is the global grid manager.
|
|
|
|
|
var globalGrid atomic.Pointer[grid.Manager]
|
|
|
|
|
|
|
|
|
|
// globalGridStart is a channel that will block startup of grid connections until closed.
|
|
|
|
|
var globalGridStart = make(chan struct{})
|
|
|
|
|
|
|
|
|
|
func initGlobalGrid(ctx context.Context, eps EndpointServerPools) error {
|
|
|
|
|
lookupHost := globalDNSCache.LookupHost
|
|
|
|
|
if IsKubernetes() || IsDocker() {
|
|
|
|
|
lookupHost = nil
|
|
|
|
|
}
|
2024-01-25 05:36:44 +08:00
|
|
|
hosts, local := eps.GridHosts()
|
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.
2023-11-21 09:09:35 +08:00
|
|
|
g, err := grid.NewManager(ctx, grid.ManagerOptions{
|
|
|
|
|
Dialer: grid.ContextDialer(xhttp.DialContextWithLookupHost(lookupHost, xhttp.NewInternodeDialContext(rest.DefaultTimeout, globalTCPOptions))),
|
|
|
|
|
Local: local,
|
|
|
|
|
Hosts: hosts,
|
|
|
|
|
AddAuth: newCachedAuthToken(),
|
|
|
|
|
AuthRequest: storageServerRequestValidate,
|
|
|
|
|
BlockConnect: globalGridStart,
|
|
|
|
|
TLSConfig: &tls.Config{
|
|
|
|
|
RootCAs: globalRootCAs,
|
|
|
|
|
CipherSuites: fips.TLSCiphers(),
|
|
|
|
|
CurvePreferences: fips.TLSCurveIDs(),
|
|
|
|
|
},
|
|
|
|
|
// Record incoming and outgoing bytes.
|
|
|
|
|
Incoming: globalConnStats.incInternodeInputBytes,
|
|
|
|
|
Outgoing: globalConnStats.incInternodeOutputBytes,
|
|
|
|
|
TraceTo: globalTrace,
|
|
|
|
|
})
|
|
|
|
|
if err != nil {
|
|
|
|
|
return err
|
|
|
|
|
}
|
|
|
|
|
globalGrid.Store(g)
|
|
|
|
|
return nil
|
|
|
|
|
}
|
