2024-06-17 10:29:18 -04:00
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// Copyright (c) 2015-2024 MinIO, Inc.
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2021-04-18 15:41:13 -04:00
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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2018-10-04 20:44:06 -04:00
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package cmd
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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
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//go:generate msgp -file $GOFILE -unexported
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2019-10-01 16:12:15 -04:00
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const (
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storageRESTVersion = "v61" // Move all Read* calls to http.MethodGet, compact handlers and query params fields
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2019-12-12 09:02:37 -05:00
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storageRESTVersionPrefix = SlashSeparator + storageRESTVersion
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2019-11-04 12:30:59 -05:00
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storageRESTPrefix = minioReservedBucketPath + "/storage"
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2019-10-01 16:12:15 -04:00
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)
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2018-10-04 20:44:06 -04:00
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const (
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2024-01-17 23:41:23 -05:00
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storageRESTMethodHealth = "/health"
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2018-10-04 20:44:06 -04:00
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2024-07-29 04:00:12 -04:00
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storageRESTMethodAppendFile = "/afile"
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storageRESTMethodCreateFile = "/cfile"
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storageRESTMethodWriteAll = "/wall"
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storageRESTMethodReadVersion = "/rver"
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storageRESTMethodReadXL = "/rxl"
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storageRESTMethodReadAll = "/rall"
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storageRESTMethodReadFile = "/rfile"
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storageRESTMethodReadFileStream = "/rfilest"
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storageRESTMethodListDir = "/ls"
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storageRESTMethodDeleteVersions = "/dvers"
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storageRESTMethodRenameFile = "/rfile"
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storageRESTMethodVerifyFile = "/vfile"
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storageRESTMethodStatInfoFile = "/sfile"
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storageRESTMethodReadMultiple = "/rmpl"
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storageRESTMethodCleanAbandoned = "/cln"
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2018-10-04 20:44:06 -04:00
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)
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const (
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storageRESTVolume = "vol"
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storageRESTVolumes = "vols"
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storageRESTDirPath = "dpath"
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storageRESTFilePath = "fp"
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storageRESTVersionID = "vid"
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storageRESTHealing = "heal"
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storageRESTTotalVersions = "tvers"
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storageRESTSrcVolume = "svol"
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storageRESTSrcPath = "spath"
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storageRESTDstVolume = "dvol"
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storageRESTDstPath = "dpath"
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storageRESTOffset = "offset"
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storageRESTLength = "length"
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storageRESTCount = "count"
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storageRESTBitrotAlgo = "balg"
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storageRESTBitrotHash = "bhash"
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storageRESTDiskID = "did"
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storageRESTForceDelete = "fdel"
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storageRESTGlob = "glob"
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storageRESTMetrics = "metrics"
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2024-07-29 04:00:12 -04:00
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storageRESTDriveQuorum = "dquorum"
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storageRESTOrigVolume = "ovol"
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storageRESTInclFreeVersions = "incl-fv"
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storageRESTRange = "rng"
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2018-10-04 20:44:06 -04:00
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)
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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
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type nsScannerOptions struct {
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DiskID string `msg:"id"`
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ScanMode int `msg:"m"`
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Cache *dataUsageCache `msg:"c"`
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}
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type nsScannerResp struct {
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Update *dataUsageEntry `msg:"u"`
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Final *dataUsageCache `msg:"f"`
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}
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