add route to get platform status

src/platform.js

@@ -4,8 +4,7 @@ exports = module.exports = {
     start,
     stopAllTasks,
 
-    // exported for testing
-    _isReady: false
+    getStatus
 };
 
 const apps = require('./apps.js'),
@@ -26,10 +25,16 @@ const apps = require('./apps.js'),
     volumes = require('./volumes.js'),
     _ = require('underscore');
 
+let gStatusMessage = 'Initializing';
+
+function getStatus() {
+    return { message: gStatusMessage };
+}
+
 async function start(options) {
     if (process.env.BOX_ENV === 'test' && !process.env.TEST_CREATE_INFRA) return;
 
-    debug('initializing addon infrastructure');
+    debug('initializing platform');
 
     let existingInfra = { version: 'none' };
     if (fs.existsSync(paths.INFRA_VERSION_FILE)) {
@@ -52,11 +57,13 @@ async function start(options) {
     for (let attempt = 0; attempt < 5; attempt++) {
         try {
             if (existingInfra.version !== infra.version) {
+                gStatusMessage = 'Removing containers for upgrade';
                 await removeAllContainers();
                 await createDockerNetwork();
             }
             if (existingInfra.version === 'none') await volumes.mountAll(); // when restoring, mount all volumes
             await markApps(existingInfra, options); // mark app state before we start addons. this gives the db import logic a chance to mark an app as errored
+            gStatusMessage = 'Starting services, this can take a while';
             await services.startServices(existingInfra);
             await fs.promises.writeFile(paths.INFRA_VERSION_FILE, JSON.stringify(infra, null, 4));
             break;
@@ -81,7 +88,7 @@ async function stopAllTasks() {
 
 async function onPlatformReady(infraChanged) {
     debug(`onPlatformReady: platform is ready. infra changed: ${infraChanged}`);
-    exports._isReady = true;
+    gStatusMessage = 'Ready';
 
     if (infraChanged) await safe(pruneInfraImages(), { debug }); // ignore error