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add oneway context propagation crossdock test
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105
internal/crossdock/client/onewayctxpropagation/behavior.go
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|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| // Copyright (c) 2016 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. | ||
|
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| package onewayctxpropagation | ||
|
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| import ( | ||
| "context" | ||
|
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| "go.uber.org/yarpc" | ||
| "go.uber.org/yarpc/encoding/raw" | ||
| "go.uber.org/yarpc/internal/crossdock/client/dispatcher" | ||
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| "github.com/crossdock/crossdock-go" | ||
| opentracing "github.com/opentracing/opentracing-go" | ||
| ) | ||
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| // Run starts the behavior, testing oneway context propagation | ||
| func Run(t crossdock.T) { | ||
| assert := crossdock.Assert(t) | ||
| fatals := crossdock.Fatals(t) | ||
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| baggage := map[string]string{ | ||
| "hello": "world", | ||
| "foo": "bar", | ||
| } | ||
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| // create handler | ||
| callBackHandler, serverCalledBack := newCallBackHandler() | ||
| dispatcher, callBackAddr := dispatcher.CreateOneway(t, callBackHandler) | ||
| defer dispatcher.Stop() | ||
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| client := raw.New(dispatcher.ClientConfig("oneway-server")) | ||
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| // make call | ||
| ack, err := client.CallOneway( | ||
| newContextWithBaggage(baggage), | ||
| yarpc.NewReqMeta(). | ||
| Procedure("echo/raw"). | ||
| Headers(yarpc.NewHeaders(). | ||
| With("callBackAddr", callBackAddr)), | ||
| []byte{}) | ||
|
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| fatals.NoError(err, "call to oneway/raw failed: %v", err) | ||
| fatals.NotNil(ack, "ack is nil") | ||
|
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| // wait for server to call us back | ||
| gotBaggage := <-serverCalledBack | ||
| assert.Equal(baggage, gotBaggage, "server baggage: %s", gotBaggage) | ||
| } | ||
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| // newCallBackHandler creates a oneway handler that fills a channel | ||
| // with the received body | ||
| func newCallBackHandler() (raw.OnewayHandler, <-chan map[string]string) { | ||
| serverCalledBack := make(chan map[string]string) | ||
| handler := func(ctx context.Context, reqMeta yarpc.ReqMeta, body []byte) error { | ||
| serverCalledBack <- extractBaggage(ctx) | ||
| return nil | ||
| } | ||
| return handler, serverCalledBack | ||
| } | ||
|
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| func newContextWithBaggage(baggage map[string]string) context.Context { | ||
| span := opentracing.GlobalTracer().StartSpan("add baggage") | ||
| for k, v := range baggage { | ||
| span.SetBaggageItem(k, v) | ||
| } | ||
| return opentracing.ContextWithSpan(context.Background(), span) | ||
| } | ||
|
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| func extractBaggage(ctx context.Context) map[string]string { | ||
| baggage := make(map[string]string) | ||
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| span := opentracing.SpanFromContext(ctx) | ||
| if span == nil { | ||
| return baggage | ||
| } | ||
| spanContext := span.Context() | ||
| if spanContext == nil { | ||
| return baggage | ||
| } | ||
|
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| spanContext.ForeachBaggageItem(func(k, v string) bool { | ||
| baggage[k] = v | ||
| return true | ||
| }) | ||
|
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| return baggage | ||
| } |
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