OpenTelemetry Collector Logs Exporter for web and node with HTTP

[![NPM Published Version][npm-img]][npm-url]
[![Apache License][license-image]][license-image]

Note: This is an experimental package under active development. New releases may include breaking changes.

This module provides a logs-exporter for OTLP (http/json) using protocol version v1.7.0.

Installation

``bash
npm install --save @opentelemetry/exporter-logs-otlp-http
`

Further Documentation

To see documentation and sample code for the traces exporter, as well as instructions for using TLS, visit the [Collector Trace Exporter for web and node][trace-exporter-url].
To see documentation and sample code for the metric exporter, see the [exporter-metrics-otlp-grpc package][metrics-exporter-url]

Logs in Web

The OTLPLogExporter in Web expects the endpoint to end in /v1/logs.

`js
import { SeverityNumber } from '@opentelemetry/api-logs';
import {
LoggerProvider,
BatchLogRecordProcessor,
} from '@opentelemetry/sdk-logs';
import { OTLPLogExporter } from '@opentelemetry/exporter-logs-otlp-http';

// exporter options. see all options in OTLPExporterConfigBase
const collectorOptions = {
url: '', // url is optional and can be omitted - default is http://localhost:4318/v1/logs
headers: {}, // an optional object containing custom headers to be sent with each request
concurrencyLimit: 1, // an optional limit on pending requests
};
const logExporter = new OTLPLogExporter(collectorOptions);
const loggerProvider = new LoggerProvider({
processors: [new BatchRecordProcessor(logExporter)]
});

const logger = loggerProvider.getLogger('default', '1.0.0');
// Emit a log
logger.emit({
severityNumber: SeverityNumber.INFO,
severityText: 'info',
body: 'this is a log body',
attributes: { 'log.type': 'custom' },
});
`

Logs in Node

`js
import {
LoggerProvider,
BatchLogRecordProcessor,
} from '@opentelemetry/sdk-logs';
import { OTLPLogExporter } from '@opentelemetry/exporter-logs-otlp-http';

// exporter options. see all options in OTLPExporterNodeConfigBase
const collectorOptions = {
url: '', // url is optional and can be omitted - default is http://localhost:4318/v1/logs
concurrencyLimit: 1, // an optional limit on pending requests
};
const logExporter = new OTLPLogExporter(collectorOptions);
const loggerProvider = new LoggerProvider({
processors: [new BatchRecordProcessor(logExporter)]
});

const logger = loggerProvider.getLogger('default', '1.0.0');
// Emit a log
logger.emit({
severityNumber: SeverityNumber.INFO,
severityText: 'info',
body: 'this is a log body',
attributes: { 'log.type': 'custom' },
});
`

Environment Variable Configuration

In addition to settings passed to the constructor, the exporter also supports configuration via environment variables:

| Environment variable | Description |
| -------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| OTEL_EXPORTER_OTLP_ENDPOINT | The endpoint to send logs to. This will also be used for the traces exporter if OTEL_EXPORTER_OTLP_TRACES_ENDPOINT is not configured. By default http://localhost:4318 will be used. /v1/logs will be automatically appended to configured values. |
| OTEL_EXPORTER_OTLP_LOGS_ENDPOINT | The endpoint to send logs to. By default https://localhost:4318/v1/logs will be used. v1/logs` will not be appended automatically and has to be added explicitly. |
| OTEL_EXPORTER_OTLP_LOGS_TIMEOUT | The maximum waiting time, in milliseconds, allowed to send each OTLP log batch. Default is 10000. |
| OTEL_EXPORTER_OTLP_TIMEOUT | The maximum waiting time, in milliseconds, allowed to send each OTLP trace/metric/log batch. Default is 10000. |

> Settings configured programmatically take precedence over environment variables. Per-signal environment variables take precedence over non-per-signal environment variables.

Useful links

- For more information on OpenTelemetry, visit:
- For more about OpenTelemetry JavaScript:
- For help or feedback on this project, join us in [GitHub Discussions][discussions-url]

License

Apache 2.0 - See [LICENSE][license-url] for more information.

[discussions-url]: https://github.com/open-telemetry/opentelemetry-js/discussions
[license-url]: https://github.com/open-telemetry/opentelemetry-js/blob/main/LICENSE
[license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
[npm-url]: https://www.npmjs.com/package/@opentelemetry/exporter-logs-otlp-http
[npm-img]: https://badge.fury.io/js/%40opentelemetry%2Fexporter-logs-otlp-http.svg
[trace-exporter-url]: https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/exporter-trace-otlp-http
[metrics-exporter-url]: https://github.com/open-telemetry/opentelemetry-js/tree/main/experimental/packages/opentelemetry-exporter-metrics-otlp-http