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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otelzap_test
import (
"context"
"os"
"go.opentelemetry.io/contrib/bridges/otelzap"
"go.opentelemetry.io/otel/log/noop"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
func Example() {
// Use a working LoggerProvider implementation instead e.g. use go.opentelemetry.io/otel/sdk/log.
provider := noop.NewLoggerProvider()
// Initialize a zap logger with the otelzap bridge core.
// This method actually doesn't log anything on your STDOUT, as everything
// is shipped to a configured otel endpoint.
logger := zap.New(otelzap.NewCore("my/pkg/name", otelzap.WithLoggerProvider(provider)))
// You can now use your logger in your code.
logger.Info("something really cool")
// You can set context for trace correlation using zap.Any or zap.Reflect
ctx := context.Background()
logger.Info("setting context", zap.Any("context", ctx))
}
func Example_multiple() {
// Use a working LoggerProvider implementation instead e.g. use go.opentelemetry.io/otel/sdk/log.
provider := noop.NewLoggerProvider()
// If you want to log also on stdout, you can initialize a new zap.Core
// that has multiple outputs using the method zap.NewTee(). With the following code,
// logs will be written to stdout and also exported to the OTEL endpoint through the bridge.
core := zapcore.NewTee(
zapcore.NewCore(zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig()), zapcore.AddSync(os.Stdout), zapcore.InfoLevel),
otelzap.NewCore("my/pkg/name", otelzap.WithLoggerProvider(provider)),
)
logger := zap.New(core)
// You can now use your logger in your code.
logger.Info("something really cool")
}
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