diff options
author | 2025-03-09 17:47:56 +0100 | |
---|---|---|
committer | 2025-03-10 01:59:49 +0100 | |
commit | 3ac1ee16f377d31a0fb80c8dae28b6239ac4229e (patch) | |
tree | f61faa581feaaeaba2542b9f2b8234a590684413 /vendor/google.golang.org/grpc/internal/resolver/config_selector.go | |
parent | [chore] update URLs to forked source (diff) | |
download | gotosocial-3ac1ee16f377d31a0fb80c8dae28b6239ac4229e.tar.xz |
[chore] remove vendor
Diffstat (limited to 'vendor/google.golang.org/grpc/internal/resolver/config_selector.go')
-rw-r--r-- | vendor/google.golang.org/grpc/internal/resolver/config_selector.go | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/vendor/google.golang.org/grpc/internal/resolver/config_selector.go b/vendor/google.golang.org/grpc/internal/resolver/config_selector.go deleted file mode 100644 index f0603871c..000000000 --- a/vendor/google.golang.org/grpc/internal/resolver/config_selector.go +++ /dev/null @@ -1,167 +0,0 @@ -/* - * - * Copyright 2020 gRPC authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - */ - -// Package resolver provides internal resolver-related functionality. -package resolver - -import ( - "context" - "sync" - - "google.golang.org/grpc/internal/serviceconfig" - "google.golang.org/grpc/metadata" - "google.golang.org/grpc/resolver" -) - -// ConfigSelector controls what configuration to use for every RPC. -type ConfigSelector interface { - // Selects the configuration for the RPC, or terminates it using the error. - // This error will be converted by the gRPC library to a status error with - // code UNKNOWN if it is not returned as a status error. - SelectConfig(RPCInfo) (*RPCConfig, error) -} - -// RPCInfo contains RPC information needed by a ConfigSelector. -type RPCInfo struct { - // Context is the user's context for the RPC and contains headers and - // application timeout. It is passed for interception purposes and for - // efficiency reasons. SelectConfig should not be blocking. - Context context.Context - Method string // i.e. "/Service/Method" -} - -// RPCConfig describes the configuration to use for each RPC. -type RPCConfig struct { - // The context to use for the remainder of the RPC; can pass info to LB - // policy or affect timeout or metadata. - Context context.Context - MethodConfig serviceconfig.MethodConfig // configuration to use for this RPC - OnCommitted func() // Called when the RPC has been committed (retries no longer possible) - Interceptor ClientInterceptor -} - -// ClientStream is the same as grpc.ClientStream, but defined here for circular -// dependency reasons. -type ClientStream interface { - // Header returns the header metadata received from the server if there - // is any. It blocks if the metadata is not ready to read. - Header() (metadata.MD, error) - // Trailer returns the trailer metadata from the server, if there is any. - // It must only be called after stream.CloseAndRecv has returned, or - // stream.Recv has returned a non-nil error (including io.EOF). - Trailer() metadata.MD - // CloseSend closes the send direction of the stream. It closes the stream - // when non-nil error is met. It is also not safe to call CloseSend - // concurrently with SendMsg. - CloseSend() error - // Context returns the context for this stream. - // - // It should not be called until after Header or RecvMsg has returned. Once - // called, subsequent client-side retries are disabled. - Context() context.Context - // SendMsg is generally called by generated code. On error, SendMsg aborts - // the stream. If the error was generated by the client, the status is - // returned directly; otherwise, io.EOF is returned and the status of - // the stream may be discovered using RecvMsg. - // - // SendMsg blocks until: - // - There is sufficient flow control to schedule m with the transport, or - // - The stream is done, or - // - The stream breaks. - // - // SendMsg does not wait until the message is received by the server. An - // untimely stream closure may result in lost messages. To ensure delivery, - // users should ensure the RPC completed successfully using RecvMsg. - // - // It is safe to have a goroutine calling SendMsg and another goroutine - // calling RecvMsg on the same stream at the same time, but it is not safe - // to call SendMsg on the same stream in different goroutines. It is also - // not safe to call CloseSend concurrently with SendMsg. - SendMsg(m any) error - // RecvMsg blocks until it receives a message into m or the stream is - // done. It returns io.EOF when the stream completes successfully. On - // any other error, the stream is aborted and the error contains the RPC - // status. - // - // It is safe to have a goroutine calling SendMsg and another goroutine - // calling RecvMsg on the same stream at the same time, but it is not - // safe to call RecvMsg on the same stream in different goroutines. - RecvMsg(m any) error -} - -// ClientInterceptor is an interceptor for gRPC client streams. -type ClientInterceptor interface { - // NewStream produces a ClientStream for an RPC which may optionally use - // the provided function to produce a stream for delegation. Note: - // RPCInfo.Context should not be used (will be nil). - // - // done is invoked when the RPC is finished using its connection, or could - // not be assigned a connection. RPC operations may still occur on - // ClientStream after done is called, since the interceptor is invoked by - // application-layer operations. done must never be nil when called. - NewStream(ctx context.Context, ri RPCInfo, done func(), newStream func(ctx context.Context, done func()) (ClientStream, error)) (ClientStream, error) -} - -// ServerInterceptor is an interceptor for incoming RPC's on gRPC server side. -type ServerInterceptor interface { - // AllowRPC checks if an incoming RPC is allowed to proceed based on - // information about connection RPC was received on, and HTTP Headers. This - // information will be piped into context. - AllowRPC(ctx context.Context) error // TODO: Make this a real interceptor for filters such as rate limiting. -} - -type csKeyType string - -const csKey = csKeyType("grpc.internal.resolver.configSelector") - -// SetConfigSelector sets the config selector in state and returns the new -// state. -func SetConfigSelector(state resolver.State, cs ConfigSelector) resolver.State { - state.Attributes = state.Attributes.WithValue(csKey, cs) - return state -} - -// GetConfigSelector retrieves the config selector from state, if present, and -// returns it or nil if absent. -func GetConfigSelector(state resolver.State) ConfigSelector { - cs, _ := state.Attributes.Value(csKey).(ConfigSelector) - return cs -} - -// SafeConfigSelector allows for safe switching of ConfigSelector -// implementations such that previous values are guaranteed to not be in use -// when UpdateConfigSelector returns. -type SafeConfigSelector struct { - mu sync.RWMutex - cs ConfigSelector -} - -// UpdateConfigSelector swaps to the provided ConfigSelector and blocks until -// all uses of the previous ConfigSelector have completed. -func (scs *SafeConfigSelector) UpdateConfigSelector(cs ConfigSelector) { - scs.mu.Lock() - defer scs.mu.Unlock() - scs.cs = cs -} - -// SelectConfig defers to the current ConfigSelector in scs. -func (scs *SafeConfigSelector) SelectConfig(r RPCInfo) (*RPCConfig, error) { - scs.mu.RLock() - defer scs.mu.RUnlock() - return scs.cs.SelectConfig(r) -} |