83 lines
4.5 KiB
Markdown
83 lines
4.5 KiB
Markdown
# OpenTelemetry mysql 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 [`mysql2`](https://github.com/sidorares/node-mysql2) 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-mysql2
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```
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## Supported Versions
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- `>= 1.4.2, < 4.0`
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## Usage
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OpenTelemetry MySQL2 Instrumentation allows the user to automatically collect trace data and export them to the backend of choice, to give observability to distributed systems when working with [mysql2](https://github.com/sidorares/node-mysql2).
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To load a specific plugin (**MySQL2** in this case), specify it in the registerInstrumentations's configuration
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```js
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const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
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const { MySQL2Instrumentation } = require('@opentelemetry/instrumentation-mysql2');
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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 MySQL2Instrumentation(),
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],
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})
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```
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### MySQL2 Instrumentation Options
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You can set the following instrumentation options:
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| Options | Type | Description |
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| ------- | ---- | ----------- |
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| `responseHook` | `MySQL2InstrumentationExecutionResponseHook` (function) | Function for adding custom attributes from db response |
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| `addSqlCommenterCommentToQueries` | `boolean` | If true, adds [sqlcommenter](https://github.com/open-telemetry/opentelemetry-sqlcommenter) specification compliant comment to queries with tracing context (default false). _NOTE: A comment will not be added to queries that already contain `--` or `/* ... */` in them, even if these are not actually part of comments_ |
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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.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.statement` | The database statement being executed. |
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| `db.system` | An identifier for the database management system (DBMS) product being used. |
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| `db.user` | Username for accessing the database. |
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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-mysql2
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[npm-img]: https://badge.fury.io/js/%40opentelemetry%2Finstrumentation-mysql2.svg
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