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More control over hot code push reloading for your production apps. Designed to replace mdg:reload-on-resume and provide a more production-ready approach.

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Reloader

More control over hot code push reloading for your mobile apps. A replacement for mdg:reload-on-resume with more options and better UX.

Before using this package we recommend that you understand what Hot Code Push is, you can learn all about it here

We provide two ways for you to handle your app code updates:

  • Always reload
  • Reload when the app allows (recommended)

Always reload

You don't need to configure anything, your app is going to reload as soon as the code is received.

If you want you can inform launchScreenDelay (0 by default) in milliseconds to hold your splashscreen longer, avoiding a flash when the app is starting and reloading.

"public": {
  "packages": {
    "quave:reloader": {
      "launchScreenDelay": 200
    }
  }
}

Reload when the app allows

We recommend this method as with it you can control when your app is going to reload. You can even delegate this decision to the final user.

In this case you must use automaticInitialization as false in your settings.

"public": {
  "packages": {
    "quave:reloader": {
      "automaticInitialization": false
    }
  }
}

You also need to call Reloader.initialize in the render or initialization of your app providing a function (can be async) in the property beforeReload.

Installing

meteor add quave:reloader
meteor remove mdg:reload-on-resume

Configuration Options

idleCutoff

Default: 1000 * 60 * 5 // 5 minutes

How long (in ms) can an app be idle before we consider it a start and not a resume. Applies only when check: 'everyStart'. Set to 0 to never check on resume.

launchScreenDelay

Default: 0

How long the splash screen will be visible. It's useful to avoid your app being rendered just for a few milliseconds and then refreshing.

automaticInitialization

Default: true

If you want to initialize the reloader yourself you need to turn off automaticInitialization. This is useful when you want to provide code to some callback as this is not possible using JSON initialization.

You can provide your callbacks calling Reloader.initialize(), for example:

ReloaderCordova.initialize({
  beforeReload(ok, nok) {
    const isOkToReload = confirm('Your app will load now, ok?');
    if (isOkToReload) {
      ok();
      return;
    }
    nok();
  },
});

Example with React

File: Routes.js (where we render the routes)

export const Routes = () => {
  useEffect(() => initializeReloader(), []);

  return (
    <Switch>
      // React router routes...
    </Switch>
  );
}

File: initializeReloader.js

import { Reloader } from 'meteor/quave:reloader';
import { loggerClient } from 'meteor/quave:logs/loggerClient';
import { showConfirm } from './ConfirmationDialog';
import { methodCall } from '../../methods/methodCall';
import { version } from '../../version';

export const initializeReloader = () => {
  loggerClient.info({ message: 'initializeReloader' });
  Reloader.initialize({
    async beforeReload(updateApp, holdAppUpdate) {
      loggerClient.info({ message: 'initializeReloader beforeReload' });
      let appUpdateData = {};
      try {
        appUpdateData =
          (await methodCall('getAppUpdateData', { clientVersion: version })) ||
          {};
      } catch (e) {
        loggerClient.info({
          message: 'forcing app reload because getAppUpdateData is breaking',
        });
        updateApp();
        return;
      }
      loggerClient.info({
        message: 'initializeReloader beforeReload appUpdateData',
        appUpdateData,
      });
      if (appUpdateData.ignore) {
        loggerClient.info({
          message:
            'initializeReloader beforeReload appUpdateData ignore is true',
          appUpdateData,
        });
        return;
      }
      const cancelAction = appUpdateData.forceUpdate
        ? updateApp
        : holdAppUpdate;
      try {
        const message = appUpdateData.forceUpdate
          ? 'Precisamos atualizar o aplicativo. É rapidinho!'
          : 'Deseja atualizar agora? É rapidinho!';
        const result = await showConfirm({
          autoFocus: false,
          title: appUpdateData.title || 'Atualização disponível',
          content: appUpdateData.message || message,
          confirmText: appUpdateData.actionLabel || 'Beleza',
          cancelText: appUpdateData.noActionLabel || 'Mais tarde',
          hideCancel: !!appUpdateData.forceUpdate,
          dismiss: cancelAction,
          onCancel() {
            loggerClient.info({
              message: 'initializeReloader beforeReload onCancel',
              appUpdateData,
            });
            cancelAction();
          },
        });
        loggerClient.info({
          message: `initializeReloader beforeReload showConfirm result is ${result}`,
          appUpdateData,
        });
        if (result) {
          loggerClient.info({
            message: 'initializeReloader beforeReload showConfirm ok',
            appUpdateData,
          });
          updateApp();
          return;
        }
        loggerClient.info({
          message: 'initializeReloader beforeReload showConfirm nok',
          appUpdateData,
        });
        cancelAction();
      } catch (e) {
        loggerClient.info({
          message: 'initializeReloader beforeReload showConfirm catch call nok',
          appUpdateData,
        });
        cancelAction();
      }
    },
  });
};

File: getAppUpdateData.js

import { Meteor } from 'meteor/meteor';
import { logger } from 'meteor/quave:logs/logger';
import { AppUpdatesCollection } from '../db/AppUpdatesCollection';
import { version } from '../version';

Meteor.methods({
  getAppUpdateData({ clientVersion } = {}) {
    this.unblock();

    if (Meteor.isClient) return null;

    const appUpdate = AppUpdatesCollection.findOne() || {};

    const result = {
      ...appUpdate,
      ...(appUpdate.ignoreVersions &&
      appUpdate.ignoreVersions.length &&
      appUpdate.ignoreVersions.includes(version)
        ? { ignore: true }
        : {}),
      version,
    };
    logger.info({
      message: `getAppUpdateData clientVersion=${clientVersion}, newClientVersion=${version}, ${JSON.stringify(
        result
      )}`,
      appUpdateData: appUpdate,
      appUpdateResult: result,
      clientVersion,
    });
    return result;
  },
});

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More control over hot code push reloading for your production apps. Designed to replace mdg:reload-on-resume and provide a more production-ready approach.

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