The RUM Browser SDK captures RUM logs and events and populates their main attributes. **Label** **Provider** gives you access to every event or URL collected by the RUM SDK, allowing you to add labels using custom-defined functions and then easily filter and aggregate your data once ingested by Coralogix.

## Overview

Take advantage of Label Provider to:

- Add labels to an event based on the event data or its network or page URLs
- Filter data easily once ingested by Coralogix
- Unleash feature mapping to streamline investigation and troubleshooting

For instance, attach a `team-APM` label to each event on your APM page. This allows your team to track and examine only the events relevant to them.

## Configuration

```js
import { CoralogixRum } from '@coralogix/browser';

const featurePageUrlLabelProvider = new UrlBasedLabelProvider({
  urlType: UrlType.PAGE,
  urlPatterns: [
    {
      regexps: [/apm/],
      labels: { featureGroupId: 'apm' },
    },
  ],
  defaultLabels: {
    featureGroupId: 'unknown-feature-group',
  },
});

const regularExpErrorLabelProvider: GenericLabelProvider = {
  providerFunc: (url, event) => {
    if (event.error_context?.error_message?.includes('Invalid regular expression')) {
      return {
        regular_expression_error: 'true',
      };
    }

    return {};
  },
};

CoralogixRum.init({
  // ...
  labelProviders: [
    featurePageUrlLabelProvider,
    regularExpErrorLabelProvider
  ]
});
```

## Filter with labels

Once you’ve configured your labels, use them to filter your data and enjoy feature mapping in any of our RUM products.

## Support

**Need help?**

Our world-class customer success team is available 24/7 to walk you through your setup and answer any questions that may come up.

Feel free to reach out to us **via our in-app chat** or by emailing [support@coralogix.com](mailto:support@coralogix.com).