Official Coralogix SDK for Browsers

Links

• Coralogix Real User Monitoring

Supported Frameworks

JavaScript / TypeScript Frameworks: React, Angular, Vue, NextJS and more. Flutter (Currently only web).

Usage

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

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

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

To provide contextual information or transmit manual logs, utilize the exported functions of CoralogixRum. Keep in mind that these functions will remain inactive until you've invoked CoralogixRum.init().

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

// Update user context dynamically
CoralogixRum.setUserContext({
  user_id: '123',
  user_name: 'name',
  user_email: '[email protected]',
  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's

Turn on/off specific instrumentation, default to all trues. Each instrumentation is responsible for which data the SDK will track and collect for you.

CoralogixRum.init({
  // ...
  instrumentations: {
    xhr: true,
    fetch: true,
    web_vitals: false,
    interactions: false,
    custom: true,
    errors: true,
    long_tasks: true,
    resources: false,
  },
});

Session Recording

Session Recording enhances your user experience monitoring by enabling you to record and visually replay the web browsing activities of your users.

CoralogixRum.init({
  // ...
  sessionRecordingConfig: {
    enable: true, // Must declare.
    /**
     * If autoStartSessionRecording is false, you can manually start & stop your session recording.
     * Refer to Recording Manually Section.
     **/
    autoStartSessionRecording: true, // Automatically records your session when SDK is up.
    recordConsoleEvents: true, // Will record all console events from dev tools. Levels: log, debug, warn, error, info, table etc..
    sessionRecordingSampleRate: 100, // Percentage of overall sessions recording being tracked, defaults to 100% and applied after the overall sessionSampleRate.
  },
});

Recording Manually

You can always start/stop your session recording manually as follows:

// To start manually the Session Recording
CoralogixRum.startSessionRecording();

// To stop the Session Recording
CoralogixRum.stopSessionRecording();

Privacy & Security

To protect your users’ privacy and sensitive information, elements containing certain class names are blocked or masked in recordings, as follows:

CoralogixRum.init({
  // ...
  sessionRecordingConfig: {
    // ..
    blockClass: 'rr-block', // Use a string or RegExp to redact all elements that contain this class, defaults to rr-block.
    ignoreClass: 'rr-ignore', // Use a string or RegExp to Ignore all events that contain this class, defaults to rr-ignore.
    maskTextClass: 'rr-mask', // Use a string or RegExp to mask all elements that contain this class, defaults to rr-mask.
    maskAllInputs: false, // Mask all input content as * (Default false), refer to Input types.
    maskInputOptions: { password: true }, // Mask some kinds of input as *, By Default the SDK masking password inputs.
  },
});

Example:

<div class="rr-block">Dont record me</div>

| Element | Action | | ---------- | -------------------------------------------------------------------------------------------------------------------------------- | | .rr-block | An element with the class name .rr-block will not be recorded. Instead, it will replay as a placeholder with the same dimension. | | .rr-ignore | An element with the class name .rr-ignore will not record its input events | | .rr-mask | All text of elements and their children will be masked. |

Performance

Session Recording works by recording incremental DOM changes that occur in your web application. To avoid performance issues, Session Recording will stop recording if it detects a large number of mutations (Default: 5,000).

CoralogixRum.init({
  // ...
  sessionRecordingConfig: {
    // ...
    // According to MutationObserver API, A large number of DOM mutations can negatively impact performance
    maxMutations: 5000,
  },
});

Multi Page Application

If your application is not a single page application (SPA), you can initialize the SDK with a configuration to retain the session ID after a reload/refresh. This will prevent multiple sessions from being created when the user navigates within the app.

CoralogixRum.init({
  // ...
  sessionConfig: {
    // ...
    keepSessionAfterReload: true,
  },
});

Session with Errors

Track only sessions with errors, and send specific instrumentation data immediately even if error is not occurred. From Session recording perspective, the SDK will record approximately 10–60s(according to maxRecordTime property) before the error occurred.

CoralogixRum.init({
  // ...
  sessionConfig: {
    onlyWithErrorConfig: {
      enable: true, // Whether to track only sessions with errors, defaults to false
      maxRumEvents: 5000, // Maximum number of cached RUM events to store in cache up until error is coming, defaults to 5000, max 20000
      maxRecordTime: 10_000, // Maximum time in milliseconds to store last record events in cache before error occurred, defaults to 10000(10s), max 60000(1m)
      /**
       * Specifies the instrumentation data to be sent for sessions with errors, defaulting to web-vitals only.
       * The instrumentation data will only be sent if it is enabled in the main configuration.
       * This data will be sent immediately, even if no error has occurred.
       */
      instrumentationsToSend: {
        [CoralogixEventType.WEB_VITALS]: true,
        // more instrumentation's can be added
        // [CoralogixEventType.LONG_TASK]: true,
        //...
      },
    },
  },
});

Ignore Errors

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

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

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

Ignore Urls

The ignoreUrls option allows you to exclude network requests that meet specific criteria. This options accepts a set of strings and regular expressions to match against the event's network url. Use regular expressions for exact matching as strings remove partial matches.

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

CoralogixRum.init({
  // ...
  ignoreUrls: [/.*\.svg/, /.*\.ico/], // will ignore all requests to .svg and .ico files
});

Mask elements

User interactions with specific elements can be masked to prevent sensitive data exposure. use maskInputTypes to specify the types of inputs to mask. defaults to: ['password', 'email', 'tel'] use maskClass to specify the class name that will be used to mask any element, string or RegExp. default is cx-mask.

CoralogixRum.init({
  // ...
  maskInputTypes: ['password', 'date'], // will only mask password and date inputs
  maskClass: 'mask-me', // will mask any element with class 'mask-me'
});

Label Providers

Provide labels based on url or event

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],
});

Url Blueprinters

Modify the event's page or network url based on custom-defined functions.

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

CoralogixRum.init({
  // ...
  urlBlueprinters: {
    pageUrlBlueprinters: [
      (url) => {
        const hostnameParts = new URL(url).hostname.split('.');
        hostnameParts[0] = '{team-id}';
        return 'https://' + hostnameParts.join('.');
        // "https://alpha.company.com" => "https://{team-id}.company.com"
      },
    ],
    networkUrlBlueprinters: [(url) => url.replace('api/v1', '{server}')],
    // "https://path/api/v1/logs" => "https://path/{server}/logs"
  },
});

TraceParentInHeader

Add trace context propagation in headers across service boundaries

CoralogixRum.init({
  // ...
  traceParentInHeader: {
    enabled: true,
    options: {
      // When the backend domain is different from the app domain, specifying backend domains is necessary.
      propagateTraceHeaderCorsUrls: [new RegExp('https://webapi.*')],
      /* B3 propagation
      propagateB3TraceHeader: { 
        singleHeader: true,
        multiHeader: true,
      }, */
      /* Aws propagation
      propagateAwsXrayTraceHeader: true, 
      */
    },
  },
});

beforeSend

Enable event access and modification before sending to Coralogix, supporting 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;
  },
});

Proxy Url

Proxy configuration to route requests.
By specifying a proxy URL, all RUM data will be directed to this URL via the POST method. However, it is necessary for this data to be subsequently relayed from the proxy to Coralogix. The Coralogix route for each request that is 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',
});

Collect IP Data

Determines whether the SDK should collect the user's IP address and corresponding geolocation data. Defaults to true.

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

CDN

Coralogix Browser SDK is also provided via CDN. You can choose a specific version or use the latest one.

Specific Version (recommended)

https://cdn.rum-ingress-coralogix.com/coralogix/browser/[version]/coralogix-browser-sdk.js
Replace [version] with a version from Releases page.

Latest Version

https://cdn.rum-ingress-coralogix.com/coralogix/browser/latest/coralogix-browser-sdk.js

Add the CDN script to your application

<head>
  ...
  <script src="https://cdn.rum-ingress-coralogix.com/coralogix/browser/1.0.101/coralogix-browser-sdk.js"></script>
</head>

Initialization

Via JS file

window.CoralogixRum.init(...);

Via TS file

window.CoralogixRum.init(...);

// In case of warning from TSC
declare global {
  interface Window {
    CoralogixRum:any;
  }
}

Flutter web

Coralogix Browser SDK is also provided for Flutter web.

Add the following CDN to your index.html file:

<script src="https://cdn.rum-ingress-coralogix.com/coralogix/browser/latest/coralogix-browser-sdk.js"></script>

Then, in your Dart code, you can use the SDK as follows:

import 'package:flutter/material.dart';
import 'dart:js' as js;

void main() {
runApp(const MyApp());

var rum = js.JsObject.fromBrowserObject(js.context['CoralogixRum']);

rum.callMethod('init', [js.JsObject.jsify({
  environment: 'test',
  application: 'my-app',
  version: '1.0.0',
  public_key: 'my-key-123',
  coralogixDomain: 'EU2',
})]);
}