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61 lines
1.8 KiB
61 lines
1.8 KiB
// Copyright (c) 2019 The Jaeger Authors.
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// Copyright (c) 2017 Uber Technologies, Inc.
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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 log
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import (
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"context"
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"go.opentelemetry.io/otel/trace"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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)
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// Factory is the default logging wrapper that can create
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// logger instances either for a given Context or context-less.
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type Factory struct {
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logger *zap.Logger
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}
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// NewFactory creates a new Factory.
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func NewFactory(logger *zap.Logger) Factory {
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return Factory{logger: logger}
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}
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// Bg creates a context-unaware logger.
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func (b Factory) Bg() Logger {
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return wrapper(b)
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}
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// For returns a context-aware Logger. If the context
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// contains a span, all logging calls are also
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// echo-ed into the span.
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func (b Factory) For(ctx context.Context) Logger {
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if span := trace.SpanFromContext(ctx); span != nil {
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logger := spanLogger{span: span, logger: b.logger}
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logger.spanFields = []zapcore.Field{
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zap.String("trace_id", span.SpanContext().TraceID().String()),
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zap.String("span_id", span.SpanContext().SpanID().String()),
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}
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return logger
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}
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return b.Bg()
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}
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// With creates a child logger, and optionally adds some context fields to that logger.
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func (b Factory) With(fields ...zapcore.Field) Factory {
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return Factory{logger: b.logger.With(fields...)}
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}
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