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64 lines
2.3 KiB
Go
64 lines
2.3 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 stats
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import (
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"context"
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"net"
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)
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// ConnTagInfo defines the relevant information needed by connection context tagger.
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type ConnTagInfo struct {
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// RemoteAddr is the remote address of the corresponding connection.
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RemoteAddr net.Addr
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// LocalAddr is the local address of the corresponding connection.
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LocalAddr net.Addr
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}
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// RPCTagInfo defines the relevant information needed by RPC context tagger.
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type RPCTagInfo struct {
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// FullMethodName is the RPC method in the format of /package.service/method.
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FullMethodName string
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// FailFast indicates if this RPC is failfast.
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// This field is only valid on client side, it's always false on server side.
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FailFast bool
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}
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// Handler defines the interface for the related stats handling (e.g., RPCs, connections).
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type Handler interface {
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// TagRPC can attach some information to the given context.
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// The context used for the rest lifetime of the RPC will be derived from
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// the returned context.
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TagRPC(context.Context, *RPCTagInfo) context.Context
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// HandleRPC processes the RPC stats.
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HandleRPC(context.Context, RPCStats)
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// TagConn can attach some information to the given context.
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// The returned context will be used for stats handling.
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// For conn stats handling, the context used in HandleConn for this
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// connection will be derived from the context returned.
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// For RPC stats handling,
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// - On server side, the context used in HandleRPC for all RPCs on this
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// connection will be derived from the context returned.
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// - On client side, the context is not derived from the context returned.
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TagConn(context.Context, *ConnTagInfo) context.Context
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// HandleConn processes the Conn stats.
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HandleConn(context.Context, ConnStats)
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}
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