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zapexporter.go
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/
zapexporter.go
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// Copyright 2020-2024 Buf Technologies, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package observabilityzap
import (
"context"
"go.opentelemetry.io/otel/sdk/trace"
"go.uber.org/zap"
)
var _ trace.SpanExporter = &zapExporter{}
type zapExporter struct {
logger *zap.Logger
}
func newZapExporter(logger *zap.Logger) *zapExporter {
return &zapExporter{
logger: logger,
}
}
func (z *zapExporter) ExportSpans(ctx context.Context, spans []trace.ReadOnlySpan) error {
for _, span := range spans {
if !span.SpanContext().IsSampled() {
continue
}
if checkedEntry := z.logger.Check(zap.DebugLevel, span.Name()); checkedEntry != nil {
fields := []zap.Field{
zap.Duration("duration", span.EndTime().Sub(span.StartTime())),
zap.String("status", span.Status().Code.String()),
}
for _, attribute := range span.Attributes() {
fields = append(fields, zap.Any(string(attribute.Key), attribute.Value.AsInterface()))
}
for _, event := range span.Events() {
for _, attribute := range event.Attributes {
// Event attributes seem to have their event name magically prepended to the attribute key.
// This could overlap with attributes, but we're going to ignore this
// for now since it's extremely unlikely, and since this is only really for the CLI.
// Not a good answer.
fields = append(fields, zap.Any(string(attribute.Key), attribute.Value.AsInterface()))
}
}
checkedEntry.Write(fields...)
}
}
return nil
}
func (z *zapExporter) Shutdown(ctx context.Context) error {
return nil
}