React Native plugin

Overview

The Coralogix React Native Plugin is the latest and recommended SDK for enabling Real User Monitoring (RUM) in React Native applications. This plugin replaces the legacy @coralogix/react-native-sdk and provides a more stable, high-performance integration.

Prerequisites

• Deploy our RUM Integration Package. This includes creating your RUM API key, which is required for the SDK setup.
• Add react-native-url-polyfill at your app's entry point. The plugin needs URL to be available globally:

// index.js
import 'react-native-url-polyfill/auto';

import { AppRegistry } from 'react-native';
import App from './App';
// ...

Usage

To use the Coralogix SDK, call CoralogixRum.init(options) at the earliest possible moment after the page load. This will initialize the SDK based on the options you provided.

import { CoralogixRum } from '@coralogix/react-native-plugin';

CoralogixRum.init({
  application: 'app-name',
  environment: 'production',
  public_key: 'abc-123-456',
  coralogixDomain: 'EU2',
  version: 'v1.0.3',
  labels: {
    payment: 'visa',
  },
  ignoreErrors: ['some error message to ignore'],
  sessionSampleRate: 100 // Percentage of overall sessions being tracked, Default to 100%
});

These fields configure various aspects of the Coralogix RUM SDK, including identification, environment settings, error handling, and data tagging in the CoralogixRum.init() function:

Field Name	Description	Example Value
application	The name of the application being monitored.	'app-name'
environment	The environment in which the application is running (e.g., production, staging, development).	'production'
public_key	The public API key used for authentication with Coralogix.	'abc-123-456'
coralogixDomain	The Coralogix domain associated with your account.	'EU2'
version	The version of the application being monitored.	'v1.0.3'
labels	Custom labels to tag and categorize data being sent.	{ payment: 'visa' }
ignoreErrors	A list of error messages or patterns to be ignored by the monitoring system.	['some error message to ignore']
sessionSampleRate	The percentage of sessions to be tracked by the monitoring system. A value of 100 means all sessions.	100
ignoreUrls	A list of URLs (strings or regex patterns) to exclude from tracing.	['https://example.com/health', /\\.svg$/]
collectIPData	Send the client IP for region detection. Defaults to true.	true
debug	Turns on internal debug logging.	false
networkExtraConfig	Per-URL rules for capturing request and response headers and payloads. See Network capture rules.	[{ urlPattern: 'https://api.example.com/.*', collectReqPayload: true }]

Use the exported functions of CoralogixRum to provide contextual information or transmit manual logs. Remember, these functions will remain inactive until you invoke CoralogixRum.init().

import { CoralogixRum } from '@coralogix/react-native-plugin';

// Update user context dynamically
CoralogixRum.setUserContext({
  user_id: '123',
  user_name: 'name',
  user_email: 'user@email.com',
  user_metadata: {
    role: 'admin',
    // ...
  }
});

// Update custom labels dynamically
CoralogixRum.setLabels({
  ...CoralogixRum.getLabels(),
  paymentMethod: 'visa',
  userTheme: 'dark',
  // ...
});

// Update application context dynamically
CoralogixRum.setApplicationContext({
  application: 'app-name',
  version: '1.0.0'
});

CoralogixRum.log(CoralogixLogSeverity.Error, 'this is a log', { key: 'value' });
CoralogixRum.error('this is a log with error severity', { key: 'value' });

Instrumentation

You can enable or disable specific instrumentation, with the default set to all trues. Each instrumentation controls the data the SDK will track and collect.

CoralogixRum.init({
  // ...
  instrumentations: {
    errors: true,
    custom: true,
    mobile_vitals: true,
    anr: true,
    lifecycle: true,
    user_interaction: true,
    network: true
  }
});

Features

Session Replay

Record and replay user sessions to visually inspect user behavior leading up to errors, performance issues, or unexpected interactions. Session replay for React Native is disabled by default and must be explicitly enabled.

Learn how to enable and configure session replay in Enable Session Replay for React Native.

Mobile Vitals

Automatically collects key app performance metrics, including CPU, memory, FPS, cold start, warm start, and ANR events.
These metrics are aggregated and sent every 15 seconds.
Learn more about collected metrics and analysis workflows in Mobile Vitals.

Configure Mobile Vitals

// Add this to CoralogixRum.init(...)
CoralogixRum.init({
  // ...
  mobileVitals: {
    warm: true,
    cold: true,
    cpu: true,
    memory: true,
    rendering: true,        // FPS / rendering
    slowFrozenFrames: true
  }
});

Ignore specific errors

The ignoreErrors option lets you exclude errors that meet specific criteria. This option accepts strings and regular expressions to match against the event's error message. Use regular expressions for exact matches, as strings remove partial matches.

import { CoralogixRum } from '@coralogix/react-native-plugin';

CoralogixRum.init({
  // ...
  ignoreErrors: [/Exact Match Error Message/, 'partial/match'],
});

Propagate trace context

Add trace context propagation in headers across service boundaries.

CoralogixRum.init({
  // ...
  traceParentInHeader: {
    enabled: true
  },
});

Modify events before sending

Enable event access and modification before sending to Coralogix, allowing content modification and event discarding.

CoralogixRum.init({
  // ...
  beforeSend: (event) => {
    // Discard events from @company.com users.
    if (event.session_context.user_email?.endsWith('@company.com')) {
      return null;
    }

    // Redact sensitive information from the page URL.
    event.page_context.page_url = event.page_context.page_url.replace(
      'sensitive-info',
      'redacted'
    );

    return event;
  },
});

Network capture rules

By default, the SDK captures request URLs, status codes, and timings. Use networkExtraConfig in CoralogixRum.init() to capture specific request and response headers or payloads on a per-URL basis.

CoralogixRum.init({
  // ...
  networkExtraConfig: [
    {
      urlPattern: 'https://api.example.com/.*',
      reqHeaders: ['X-Request-Id'],
      resHeaders: ['X-Response-Time'],
      collectReqPayload: true,
      collectResPayload: false,
    },
  ],
});

Route data through a proxy

Proxy configuration to route requests. Specifying a proxy URL will direct all RUM data to this URL via the POST method. Ensure this data is subsequently relayed from the proxy to Coralogix. The Coralogix route for each request sent to the proxy is available in the request’s cxforward parameter (for example, https://www.your-proxy.com/endpoint?cxforward=https%3A%2F%2Fingress.eu1.rum-ingress-coralogix.com%2Fbrowser%2Fv1beta%2Flogs).

CoralogixRum.init({
  // ...
  coralogixDomain: 'EU1',
  proxyUrl: '<https://www.your-proxy.com/endpoint>'
});

View tracking with React Navigation

The plugin ships a turn-key helper that wires into a React Navigation navigator. Pass your NavigationContainer's ref to attachReactNavigationObserver to record view changes automatically.

import {
  NavigationContainer,
  createNavigationContainerRef,
} from '@react-navigation/native';
import { attachReactNavigationObserver } from '@coralogix/react-native-plugin';

const navigationRef = createNavigationContainerRef();

export default function App() {
  return (
    <NavigationContainer
      ref={navigationRef}
      onReady={() => attachReactNavigationObserver(navigationRef)}
      onStateChange={() => attachReactNavigationObserver(navigationRef)}
    >
      {/* ... */}
    </NavigationContainer>
  );
}

The helper calls CoralogixRum.setViewContext() whenever the active route changes, so each replay frame and span is tagged with the correct view name.

Utility methods

Inspect SDK state or update context at runtime. The plugin's init is async; some helpers are synchronous accessors after initialization completes.

import { CoralogixRum } from '@coralogix/react-native-plugin';

// Confirm the SDK is initialized.
const initialized = CoralogixRum.isInited;

// Read the current session ID.
const sessionId = await CoralogixRum.getSessionId();

// Read the current user context or labels.
const user = CoralogixRum.getUserContext();
const labels = CoralogixRum.getLabels();

// Update the application context after init.
CoralogixRum.setApplicationContext({ application: 'my-app', version: '1.2.0' });

Log severity shorthand methods

The plugin exposes shorthand methods for each log severity in addition to the full log(severity, message, data, labels) form:

CoralogixRum.debug('debug message');
CoralogixRum.verbose('verbose message');
CoralogixRum.info('info message');
CoralogixRum.warn('warn message');
CoralogixRum.error('error message', { context: 'value' });
CoralogixRum.critical('critical message');

Support

Need help?

Our world-class customer success team is available 24/7 to assist you with your setup and answer any questions you may have.

Feel free to reach out to us via our in-app chat or by emailing support@coralogix.com.