index.ts

/*
 * Copyright The OpenTelemetry Authors
 *
 * 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
 *
 *      https://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.
 */

import { DiagConsoleLogger, DiagLogLevel, diag } from '@opentelemetry/api';
import { logs, SeverityNumber } from '@opentelemetry/api-logs';
import {
  LoggerProvider,
  ConsoleLogRecordExporter,
  SimpleLogRecordProcessor,
} from '@opentelemetry/sdk-logs';

// Optional and only needed to see the internal diagnostic logging (during development)
diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG);

const loggerProvider = new LoggerProvider();
loggerProvider.addLogRecordProcessor(
  new SimpleLogRecordProcessor(new ConsoleLogRecordExporter())
);

logs.setGlobalLoggerProvider(loggerProvider);

const logger = logs.getLogger('example', '1.0.0');

// emit a log record
logger.emit({
  severityNumber: SeverityNumber.INFO,
  severityText: 'INFO',
  body: 'this is a log record body',
  attributes: { 'log.type': 'custom' },
});