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78 lines
3.9 KiB
Go
78 lines
3.9 KiB
Go
/*
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*
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* Copyright 2016 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package grpc
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import (
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"context"
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)
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// UnaryInvoker is called by UnaryClientInterceptor to complete RPCs.
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type UnaryInvoker func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, opts ...CallOption) error
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// UnaryClientInterceptor intercepts the execution of a unary RPC on the client. invoker is the handler to complete the RPC
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// and it is the responsibility of the interceptor to call it.
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// This is an EXPERIMENTAL API.
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type UnaryClientInterceptor func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error
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// Streamer is called by StreamClientInterceptor to create a ClientStream.
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type Streamer func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (ClientStream, error)
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// StreamClientInterceptor intercepts the creation of ClientStream. It may return a custom ClientStream to intercept all I/O
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// operations. streamer is the handler to create a ClientStream and it is the responsibility of the interceptor to call it.
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// This is an EXPERIMENTAL API.
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type StreamClientInterceptor func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, streamer Streamer, opts ...CallOption) (ClientStream, error)
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// UnaryServerInfo consists of various information about a unary RPC on
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// server side. All per-rpc information may be mutated by the interceptor.
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type UnaryServerInfo struct {
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// Server is the service implementation the user provides. This is read-only.
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Server interface{}
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// FullMethod is the full RPC method string, i.e., /package.service/method.
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FullMethod string
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}
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// UnaryHandler defines the handler invoked by UnaryServerInterceptor to complete the normal
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// execution of a unary RPC. If a UnaryHandler returns an error, it should be produced by the
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// status package, or else gRPC will use codes.Unknown as the status code and err.Error() as
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// the status message of the RPC.
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type UnaryHandler func(ctx context.Context, req interface{}) (interface{}, error)
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// UnaryServerInterceptor provides a hook to intercept the execution of a unary RPC on the server. info
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// contains all the information of this RPC the interceptor can operate on. And handler is the wrapper
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// of the service method implementation. It is the responsibility of the interceptor to invoke handler
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// to complete the RPC.
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type UnaryServerInterceptor func(ctx context.Context, req interface{}, info *UnaryServerInfo, handler UnaryHandler) (resp interface{}, err error)
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// StreamServerInfo consists of various information about a streaming RPC on
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// server side. All per-rpc information may be mutated by the interceptor.
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type StreamServerInfo struct {
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// FullMethod is the full RPC method string, i.e., /package.service/method.
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FullMethod string
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// IsClientStream indicates whether the RPC is a client streaming RPC.
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IsClientStream bool
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// IsServerStream indicates whether the RPC is a server streaming RPC.
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IsServerStream bool
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}
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// StreamServerInterceptor provides a hook to intercept the execution of a streaming RPC on the server.
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// info contains all the information of this RPC the interceptor can operate on. And handler is the
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// service method implementation. It is the responsibility of the interceptor to invoke handler to
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// complete the RPC.
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type StreamServerInterceptor func(srv interface{}, ss ServerStream, info *StreamServerInfo, handler StreamHandler) error
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