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https://github.com/open-telemetry/opentelemetry-go.git
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af5428829b
* Update OTLP protos, fix imports * Update go.sum Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
113 lines
2.6 KiB
Go
113 lines
2.6 KiB
Go
// Copyright 2020, OpenTelemetry 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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package otlp_test
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import (
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"context"
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"fmt"
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"net"
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"sync"
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"testing"
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"time"
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"google.golang.org/grpc"
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coltracepb "github.com/open-telemetry/opentelemetry-proto/gen/go/collector/trace/v1"
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tracepb "github.com/open-telemetry/opentelemetry-proto/gen/go/trace/v1"
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)
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func makeMockCollector(t *testing.T) *mockCol {
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return &mockCol{t: t, wg: new(sync.WaitGroup)}
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}
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type mockCol struct {
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t *testing.T
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spans []*tracepb.Span
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mu sync.Mutex
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wg *sync.WaitGroup
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address string
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stopFunc func() error
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stopOnce sync.Once
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}
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var _ coltracepb.TraceServiceServer = (*mockCol)(nil)
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func (mc *mockCol) Export(ctx context.Context, exp *coltracepb.ExportTraceServiceRequest) (*coltracepb.ExportTraceServiceResponse, error) {
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resourceSpans := exp.GetResourceSpans()
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// TODO (rghetia): handle Resources
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for _, rs := range resourceSpans {
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mc.spans = append(mc.spans, rs.Spans...)
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}
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return &coltracepb.ExportTraceServiceResponse{}, nil
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}
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var errAlreadyStopped = fmt.Errorf("already stopped")
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func (mc *mockCol) stop() error {
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var err = errAlreadyStopped
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mc.stopOnce.Do(func() {
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if mc.stopFunc != nil {
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err = mc.stopFunc()
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}
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})
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// Give it sometime to shutdown.
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<-time.After(160 * time.Millisecond)
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mc.mu.Lock()
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mc.wg.Wait()
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mc.mu.Unlock()
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return err
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}
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// runMockCol is a helper function to create a mockCol
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func runMockCol(t *testing.T) *mockCol {
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return runMockColAtAddr(t, "localhost:0")
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}
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func runMockColAtAddr(t *testing.T, addr string) *mockCol {
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ln, err := net.Listen("tcp", addr)
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if err != nil {
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t.Fatalf("Failed to get an address: %v", err)
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}
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srv := grpc.NewServer()
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mc := makeMockCollector(t)
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coltracepb.RegisterTraceServiceServer(srv, mc)
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go func() {
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_ = srv.Serve(ln)
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}()
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deferFunc := func() error {
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srv.Stop()
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return ln.Close()
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}
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_, collectorPortStr, _ := net.SplitHostPort(ln.Addr().String())
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mc.address = "localhost:" + collectorPortStr
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mc.stopFunc = deferFunc
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return mc
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}
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func (mc *mockCol) getSpans() []*tracepb.Span {
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mc.mu.Lock()
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spans := append([]*tracepb.Span{}, mc.spans...)
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mc.mu.Unlock()
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return spans
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}
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