minio/internal/grid/handlers_string.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.
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// Code generated by "stringer -type=HandlerID -output=handlers_string.go -trimprefix=Handler msg.go handlers.go"; DO NOT EDIT.
package grid
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[handlerInvalid-0]
_ = x[HandlerLockLock-1]
_ = x[HandlerLockRLock-2]
_ = x[HandlerLockUnlock-3]
_ = x[HandlerLockRUnlock-4]
_ = x[HandlerLockRefresh-5]
_ = x[HandlerLockForceUnlock-6]
_ = x[HandlerWalkDir-7]
_ = x[HandlerStatVol-8]
_ = x[HandlerDiskInfo-9]
_ = x[HandlerNSScanner-10]
_ = x[HandlerReadXL-11]
_ = x[HandlerReadVersion-12]
_ = x[HandlerDeleteFile-13]
_ = x[HandlerDeleteVersion-14]
_ = x[HandlerUpdateMetadata-15]
_ = x[HandlerWriteMetadata-16]
_ = x[HandlerCheckParts-17]
_ = x[HandlerRenameData-18]
_ = x[HandlerRenameFile-19]
_ = x[HandlerReadAll-20]
_ = x[HandlerServerVerify-21]
_ = x[HandlerTrace-22]
_ = x[HandlerListen-23]
_ = x[HandlerDeleteBucketMetadata-24]
_ = x[HandlerLoadBucketMetadata-25]
_ = x[HandlerReloadSiteReplicationConfig-26]
_ = x[HandlerReloadPoolMeta-27]
_ = x[HandlerStopRebalance-28]
_ = x[HandlerLoadRebalanceMeta-29]
_ = x[HandlerLoadTransitionTierConfig-30]
_ = x[HandlerDeletePolicy-31]
_ = x[HandlerLoadPolicy-32]
_ = x[HandlerLoadPolicyMapping-33]
_ = x[HandlerDeleteServiceAccount-34]
_ = x[HandlerLoadServiceAccount-35]
_ = x[HandlerDeleteUser-36]
_ = x[HandlerLoadUser-37]
_ = x[HandlerLoadGroup-38]
_ = x[HandlerHealBucket-39]
_ = x[HandlerMakeBucket-40]
_ = x[HandlerHeadBucket-41]
_ = x[HandlerDeleteBucket-42]
_ = x[HandlerGetMetrics-43]
_ = x[HandlerGetResourceMetrics-44]
_ = x[HandlerGetMemInfo-45]
_ = x[HandlerGetProcInfo-46]
_ = x[HandlerGetOSInfo-47]
_ = x[HandlerGetPartitions-48]
_ = x[HandlerGetNetInfo-49]
_ = x[HandlerGetCPUs-50]
_ = x[HandlerServerInfo-51]
_ = x[HandlerGetSysConfig-52]
_ = x[HandlerGetSysServices-53]
_ = x[HandlerGetSysErrors-54]
_ = x[HandlerGetAllBucketStats-55]
_ = x[HandlerGetBucketStats-56]
_ = x[HandlerGetSRMetrics-57]
_ = x[HandlerGetPeerMetrics-58]
_ = x[HandlerGetMetacacheListing-59]
_ = x[HandlerUpdateMetacacheListing-60]
_ = x[HandlerGetPeerBucketMetrics-61]
_ = x[HandlerStorageInfo-62]
_ = x[HandlerConsoleLog-63]
_ = x[HandlerListDir-64]
_ = x[HandlerGetLocks-65]
_ = x[HandlerBackgroundHealStatus-66]
_ = x[HandlerGetLastDayTierStats-67]
_ = x[HandlerSignalService-68]
_ = x[HandlerGetBandwidth-69]
_ = x[HandlerWriteAll-70]
_ = x[HandlerListBuckets-71]
_ = x[HandlerRenameDataInline-72]
_ = x[handlerTest-73]
_ = x[handlerTest2-74]
_ = x[handlerLast-75]
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.
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}
const _HandlerID_name = "handlerInvalidLockLockLockRLockLockUnlockLockRUnlockLockRefreshLockForceUnlockWalkDirStatVolDiskInfoNSScannerReadXLReadVersionDeleteFileDeleteVersionUpdateMetadataWriteMetadataCheckPartsRenameDataRenameFileReadAllServerVerifyTraceListenDeleteBucketMetadataLoadBucketMetadataReloadSiteReplicationConfigReloadPoolMetaStopRebalanceLoadRebalanceMetaLoadTransitionTierConfigDeletePolicyLoadPolicyLoadPolicyMappingDeleteServiceAccountLoadServiceAccountDeleteUserLoadUserLoadGroupHealBucketMakeBucketHeadBucketDeleteBucketGetMetricsGetResourceMetricsGetMemInfoGetProcInfoGetOSInfoGetPartitionsGetNetInfoGetCPUsServerInfoGetSysConfigGetSysServicesGetSysErrorsGetAllBucketStatsGetBucketStatsGetSRMetricsGetPeerMetricsGetMetacacheListingUpdateMetacacheListingGetPeerBucketMetricsStorageInfoConsoleLogListDirGetLocksBackgroundHealStatusGetLastDayTierStatsSignalServiceGetBandwidthWriteAllListBucketsRenameDataInlinehandlerTesthandlerTest2handlerLast"
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.
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var _HandlerID_index = [...]uint16{0, 14, 22, 31, 41, 52, 63, 78, 85, 92, 100, 109, 115, 126, 136, 149, 163, 176, 186, 196, 206, 213, 225, 230, 236, 256, 274, 301, 315, 328, 345, 369, 381, 391, 408, 428, 446, 456, 464, 473, 483, 493, 503, 515, 525, 543, 553, 564, 573, 586, 596, 603, 613, 625, 639, 651, 668, 682, 694, 708, 727, 749, 769, 780, 790, 797, 805, 825, 844, 857, 869, 877, 888, 904, 915, 927, 938}
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.
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func (i HandlerID) String() string {
if i >= HandlerID(len(_HandlerID_index)-1) {
return "HandlerID(" + strconv.FormatInt(int64(i), 10) + ")"
}
return _HandlerID_name[_HandlerID_index[i]:_HandlerID_index[i+1]]
}