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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| // Copyright (c) 2024 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
||
| package outboundinterceptor | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "go.uber.org/yarpc/api/transport" | ||
| "go.uber.org/yarpc/internal/interceptor" | ||
| ) | ||
|
|
||
| // NewUnaryChain combines a series of `UnaryInbound`s into a single `InboundMiddleware`. | ||
| func NewUnaryChain(out interceptor.DirectUnaryOutbound, list []interceptor.UnaryOutbound) interceptor.UnaryOutboundChain { | ||
| return unaryChainExec{ | ||
| Chain: list, | ||
| Final: out, | ||
| } | ||
| } | ||
|
|
||
| func (x unaryChainExec) Next(ctx context.Context, request *transport.Request) (*transport.Response, error) { | ||
| if len(x.Chain) == 0 { | ||
| return x.Final.DirectCall(ctx, request) | ||
| } | ||
| next := x.Chain[0] | ||
| x.Chain = x.Chain[1:] | ||
| return next.Call(ctx, request, x) | ||
| } | ||
|
|
||
| func (x unaryChainExec) Outbound() interceptor.Outbound { | ||
| return x.Final | ||
| } | ||
|
|
||
| // unaryChainExec adapts a series of `UnaryOutbound`s into a `UnaryOutbound`. It | ||
| // is scoped to a single call of a UnaryOutbound and is not thread-safe. | ||
| type unaryChainExec struct { | ||
| Chain []interceptor.UnaryOutbound | ||
| Final interceptor.DirectUnaryOutbound | ||
| } | ||
|
|
||
| // NewOnewayChain combines a series of `OnewayInbound`s into a single `InboundMiddleware`. | ||
| func NewOnewayChain(out interceptor.DirectOnewayOutbound, list []interceptor.OnewayOutbound) interceptor.OnewayOutboundChain { | ||
| return onewayChainExec{ | ||
| Chain: list, | ||
| Final: out, | ||
| } | ||
| } | ||
|
|
||
| func (x onewayChainExec) Next(ctx context.Context, request *transport.Request) (transport.Ack, error) { | ||
| if len(x.Chain) == 0 { | ||
| return x.Final.DirectCallOneway(ctx, request) | ||
| } | ||
| next := x.Chain[0] | ||
| x.Chain = x.Chain[1:] | ||
| return next.CallOneway(ctx, request, x) | ||
| } | ||
|
|
||
| func (x onewayChainExec) Outbound() interceptor.Outbound { | ||
| return x.Final | ||
| } | ||
|
|
||
| // onewayChainExec adapts a series of `OnewayOutbound`s into a `OnewayOutbound`. It | ||
| // is scoped to a single call of a OnewayOutbound and is not thread-safe. | ||
| type onewayChainExec struct { | ||
| Chain []interceptor.OnewayOutbound | ||
| Final interceptor.DirectOnewayOutbound | ||
| } | ||
|
|
||
| func (x onewayChainExec) DirectCallOneway(ctx context.Context, request *transport.Request) (transport.Ack, error) { | ||
| if len(x.Chain) == 0 { | ||
| return x.Final.DirectCallOneway(ctx, request) | ||
| } | ||
| next := x.Chain[0] | ||
| x.Chain = x.Chain[1:] | ||
| return next.CallOneway(ctx, request, x) | ||
| } | ||
|
|
||
| // NewStreamChain combines a series of `OnewayInbound`s into a single `InboundMiddleware`. | ||
| func NewStreamChain(out interceptor.DirectStreamOutbound, list []interceptor.StreamOutbound) interceptor.StreamOutboundChain { | ||
| return streamChainExec{ | ||
| Chain: list, | ||
| Final: out, | ||
| } | ||
| } | ||
|
|
||
| func (x streamChainExec) Next(ctx context.Context, request *transport.StreamRequest) (*transport.ClientStream, error) { | ||
| if len(x.Chain) == 0 { | ||
| return x.Final.DirectCallStream(ctx, request) | ||
| } | ||
| next := x.Chain[0] | ||
| x.Chain = x.Chain[1:] | ||
| return next.CallStream(ctx, request, x) | ||
| } | ||
|
|
||
| func (x streamChainExec) Outbound() interceptor.Outbound { | ||
| return x.Final | ||
| } | ||
|
|
||
| // streamChainExec adapts a series of `StreamOutbound`s into a `StreamOutbound`. It | ||
| // is scoped to a single call of a StreamOutbound and is not thread-safe. | ||
| type streamChainExec struct { | ||
| Chain []interceptor.StreamOutbound | ||
| Final interceptor.DirectStreamOutbound | ||
| } | ||
|
|
||
| func (x streamChainExec) DirectCallStream(ctx context.Context, request *transport.StreamRequest) (*transport.ClientStream, error) { | ||
| if len(x.Chain) == 0 { | ||
| return x.Final.DirectCallStream(ctx, request) | ||
| } | ||
| next := x.Chain[0] | ||
| x.Chain = x.Chain[1:] | ||
| return next.CallStream(ctx, request, x) | ||
| } |
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