github.com/facebookincubator/go-belt@v0.0.0-20230703220935-39cd348f1a38/tool/experimental/tracer/tests/zipkin_test.go (about)

     1  // Copyright 2022 Meta Platforms, Inc. and affiliates.
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     3  // Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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    11  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    12  
    13  package tests
    14  
    15  import (
    16  	"fmt"
    17  	"time"
    18  
    19  	"github.com/facebookincubator/go-belt/tool/experimental/tracer"
    20  	zipkinimpl "github.com/facebookincubator/go-belt/tool/experimental/tracer/implementation/zipkin"
    21  	"github.com/openzipkin/zipkin-go"
    22  	zipkinmodel "github.com/openzipkin/zipkin-go/model"
    23  	zipkinreporter "github.com/openzipkin/zipkin-go/reporter"
    24  	"github.com/xaionaro-go/unsafetools"
    25  )
    26  
    27  type dummyZipkinReporter struct {
    28  	onSend func(tracer.Span)
    29  	tracer *zipkinimpl.TracerImpl
    30  }
    31  
    32  type dummyZipkinSpan struct {
    33  	data     zipkinmodel.SpanModel
    34  	reporter *dummyZipkinReporter
    35  }
    36  
    37  func (span *dummyZipkinSpan) Context() zipkinmodel.SpanContext {
    38  	return span.data.SpanContext
    39  }
    40  func (span *dummyZipkinSpan) SetName(name string) {
    41  	span.data.Name = name
    42  }
    43  func (span *dummyZipkinSpan) SetRemoteEndpoint(*zipkinmodel.Endpoint) {
    44  	panic("not implemented")
    45  }
    46  func (span *dummyZipkinSpan) Annotate(time.Time, string) {
    47  	panic("not implemented")
    48  }
    49  func (span *dummyZipkinSpan) Tag(key, value string) {
    50  	span.data.Tags[key] = value
    51  }
    52  func (span *dummyZipkinSpan) Finish() {
    53  	panic("not implemented")
    54  }
    55  func (span *dummyZipkinSpan) FinishedWithDuration(duration time.Duration) {
    56  	panic("not implemented")
    57  }
    58  func (span *dummyZipkinSpan) Flush() {
    59  	panic("not implemented")
    60  }
    61  
    62  func (r *dummyZipkinReporter) Send(span zipkinmodel.SpanModel) {
    63  	spanImpl := &zipkinimpl.SpanImpl{}
    64  	*unsafetools.FieldByName(spanImpl, "name").(*string) = span.Name
    65  	*unsafetools.FieldByName(spanImpl, "zipkinSpan").(*zipkin.Span) = &dummyZipkinSpan{data: span, reporter: r}
    66  	*unsafetools.FieldByName(spanImpl, "tracer").(**zipkinimpl.TracerImpl) = r.tracer
    67  	r.onSend(spanImpl)
    68  }
    69  
    70  func (r *dummyZipkinReporter) OnSend(onSend func(tracer.Span)) {
    71  	r.onSend = onSend
    72  }
    73  
    74  func (r *dummyZipkinReporter) Close() error {
    75  	return nil
    76  }
    77  
    78  var _ zipkinreporter.Reporter = (*dummyZipkinReporter)(nil)
    79  
    80  func init() {
    81  	implementations = append(implementations, implementationCase{
    82  		Name: "zipkin",
    83  		Factory: func() (tracer.Tracer, DummyReporter) {
    84  			var reporter dummyZipkinReporter
    85  
    86  			zipkinTracer, err := zipkin.NewTracer(&reporter)
    87  			if err != nil {
    88  				panic(fmt.Errorf("unable to create a zipkin tracer: %v", err))
    89  			}
    90  
    91  			tracer := zipkinimpl.New(zipkinTracer)
    92  			return tracer, &reporter
    93  		},
    94  	})
    95  }