1// Copyright The OpenTelemetry Authors 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15package trace // import "go.opentelemetry.io/otel/sdk/trace" 16 17import ( 18 "context" 19 20 "go.opentelemetry.io/otel" 21 export "go.opentelemetry.io/otel/sdk/export/trace" 22) 23 24// SimpleSpanProcessor is a SpanProcessor that synchronously sends all 25// SpanSnapshots to a trace.Exporter when the span finishes. 26type SimpleSpanProcessor struct { 27 e export.SpanExporter 28} 29 30var _ SpanProcessor = (*SimpleSpanProcessor)(nil) 31 32// NewSimpleSpanProcessor returns a new SimpleSpanProcessor that will 33// synchronously send SpanSnapshots to the exporter. 34func NewSimpleSpanProcessor(exporter export.SpanExporter) *SimpleSpanProcessor { 35 ssp := &SimpleSpanProcessor{ 36 e: exporter, 37 } 38 return ssp 39} 40 41// OnStart method does nothing. 42func (ssp *SimpleSpanProcessor) OnStart(parent context.Context, s ReadWriteSpan) { 43} 44 45// OnEnd method exports a ReadOnlySpan using the associated exporter. 46func (ssp *SimpleSpanProcessor) OnEnd(s ReadOnlySpan) { 47 if ssp.e != nil && s.SpanContext().IsSampled() { 48 ss := s.Snapshot() 49 if err := ssp.e.ExportSpans(context.Background(), []*export.SpanSnapshot{ss}); err != nil { 50 otel.Handle(err) 51 } 52 } 53} 54 55// Shutdown method does nothing. There is no data to cleanup. 56func (ssp *SimpleSpanProcessor) Shutdown(_ context.Context) error { 57 return nil 58} 59 60// ForceFlush does nothing as there is no data to flush. 61func (ssp *SimpleSpanProcessor) ForceFlush() { 62} 63