89 lines
4.6 KiB
Markdown
89 lines
4.6 KiB
Markdown
# OpenTelemetry MongoDB Instrumentation for Node.js
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[![NPM Published Version][npm-img]][npm-url]
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[![Apache License][license-image]][license-image]
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This module provides automatic instrumentation for the [`mongodb`](https://github.com/mongodb/node-mongodb-native) module, which may be loaded using the [`@opentelemetry/sdk-trace-node`](https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-sdk-trace-node) package and is included in the [`@opentelemetry/auto-instrumentations-node`](https://www.npmjs.com/package/@opentelemetry/auto-instrumentations-node) bundle.
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If total installation size is not constrained, it is recommended to use the [`@opentelemetry/auto-instrumentations-node`](https://www.npmjs.com/package/@opentelemetry/auto-instrumentations-node) bundle with [@opentelemetry/sdk-node](`https://www.npmjs.com/package/@opentelemetry/sdk-node`) for the most seamless instrumentation experience.
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Compatible with OpenTelemetry JS API and SDK `1.0+`.
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## Installation
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```bash
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npm install --save @opentelemetry/instrumentation-mongodb
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```
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### Supported Versions
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- `>=3.3 <7`
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## Usage
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OpenTelemetry MongoDB Instrumentation allows the user to automatically collect trace data and export them to their backend of choice, to give observability to distributed systems.
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To load a specific instrumentation (**mongodb** in this case), specify it in the Node Tracer's configuration.
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```javascript
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const { MongoDBInstrumentation } = require('@opentelemetry/instrumentation-mongodb');
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const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
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const { registerInstrumentations } = require('@opentelemetry/instrumentation');
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const provider = new NodeTracerProvider();
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provider.register();
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registerInstrumentations({
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instrumentations: [
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new MongoDBInstrumentation({
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// see under for available configuration
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}),
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],
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});
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```
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See [`examples/mongodb`](https://github.com/open-telemetry/opentelemetry-js-contrib/tree/main/examples/mongodb) for a short example.
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### Mongo instrumentation Options
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Mongodb instrumentation has few options available to choose from. You can set the following:
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| Options | Type | Description |
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| ------- | ---- | ----------- |
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| [`enhancedDatabaseReporting`](./src/types.ts#L32) | `string` | If true, additional information about query parameters and results will be attached (as `attributes`) to spans representing database operations |
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| `responseHook` | `MongoDBInstrumentationExecutionResponseHook` (function) | Function for adding custom attributes from db response |
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| `dbStatementSerializer` | `DbStatementSerializer` (function) | Custom serializer function for the db.statement tag |
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## Semantic Conventions
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This package uses `@opentelemetry/semantic-conventions` version `1.22+`, which implements Semantic Convention [Version 1.7.0](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.7.0/semantic_conventions/README.md)
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Attributes collected:
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| Attribute | Short Description |
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| ----------------------- | ------------------------------------------------------------------------------ |
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| `db.system` | An identifier for the database management system (DBMS) product being used. |
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| `db.connection_string` | The connection string used to connect to the database. |
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| `db.name` | This attribute is used to report the name of the database being accessed. |
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| `db.operation` | The name of the operation being executed. |
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| `db.mongodb.collection` | The collection being accessed within the database stated in `db.name`. |
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| `net.peer.name` | Remote hostname or similar. |
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| `net.peer.port` | Remote port number. |
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## Useful links
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- For more information on OpenTelemetry, visit: <https://opentelemetry.io/>
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- For more about OpenTelemetry JavaScript: <https://github.com/open-telemetry/opentelemetry-js>
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- For help or feedback on this project, join us in [GitHub Discussions][discussions-url]
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## License
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Apache 2.0 - See [LICENSE][license-url] for more information.
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[discussions-url]: https://github.com/open-telemetry/opentelemetry-js/discussions
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[license-url]: https://github.com/open-telemetry/opentelemetry-js-contrib/blob/main/LICENSE
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[license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
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[npm-url]: https://www.npmjs.com/package/@opentelemetry/instrumentation-mongodb
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[npm-img]: https://badge.fury.io/js/%40opentelemetry%2Finstrumentation-mongodb.svg
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