pop Notify error dialogue when session creation fails.

A .zap configuration can fail to be loaded into the backend when the backend db is corrupt / etc.
BUG: ZAPP-489

src-electron/ide-integration/studio-rest-api.js

@@ -197,11 +197,29 @@ function sendDirtyFlagStatus() {
   )
 }
 
+/**
+ * Notify front-end that current session failed to load.
+ * @param {} err
+ */
+function sendSessionCreationErrorStatus(err) {
+  let { error, errorMessage, project} = err;
+  querySession.getAllSessions(env.mainDatabase()).then((sessions) =>
+    sessions.forEach((session) => {
+      let socket = wsServer.clientSocket(session.sessionKey)
+      if (socket) {
+        wsServer.sendWebSocketMessage(socket, {
+          category: dbEnum.wsCategory.sessionCreationError,
+          payload: err,
+        })
+      }
+    })
+  )
+}
+
 exports.getProjectInfo = getProjectInfo
-// exports.addComponent = addComponent
-// exports.removeComponent = removeComponent
 exports.updateComponentByComponentIds = updateComponentByComponentIds
 exports.updateComponentByClusterIdAndComponentId = updateComponentByClusterIdAndComponentId
 exports.projectName = projectName
 exports.initializeReporting = initializeReporting
 exports.clearReporting = clearReporting
+exports.sendSessionCreationErrorStatus = sendSessionCreationErrorStatus

src-electron/rest/ide-api-handler.js

@@ -30,6 +30,10 @@ const http = require('http-status-codes')
 const queryConfig = require('../db/query-config.js')
 const dbEnum = require('../../src-shared/db-enum.js')
 const { queryEndpoints } = require('../db/query-endpoint.js')
+const webSocket = require('../server/ws-server.js')
+const httpServer = require('../server/http-server.js')
+const studio = require('../ide-integration/studio-rest-api.js')
+
 /**
  * HTTP GET: IDE open
  *
@@ -54,10 +58,10 @@ function httpGetIdeOpen(db) {
           res.send(response)
         })
         .catch(function (err) {
-          let msg = `Studio: Failed to load project(${zapFile})`
-          env.logError(msg)
-          res.status(http.StatusCodes.BAD_REQUEST).send({ error: msg })
-          env.logError(err)
+          err.project = zapFile
+          studio.sendSessionCreationErrorStatus(err)
+          env.logError(JSON.stringify(err))
+          res.status(http.StatusCodes.BAD_REQUEST).send(err)
         })
     } else {
       let msg = 'Opening/Loading project: Missing "project" query string'

src-electron/server/http-server.js

@@ -29,6 +29,7 @@ const querySession = require('../db/query-session.js')
 const util = require('../util/util.js')
 const webSocket = require('./ws-server.js')
 const studio = require('../ide-integration/studio-rest-api.js')
+const dbEnum = require('../../src-shared/db-enum.js')
 
 const restApiModules = [
   '../rest/admin.js',
@@ -132,8 +133,12 @@ async function initHttpServer(db, port, studioPort) {
             next()
           })
           .catch((err) => {
-            env.logError('Could not create session: ' + err.message)
-            env.logError(err)
+            let resp = {
+              error: 'Could not create session: ' + err.message,
+              errorMessage: err,
+            }
+            studio.sendSessionCreationErrorStatus(resp)
+            env.logError(resp)
           })
       }
     })

src-shared/db-enum.js

@@ -84,6 +84,7 @@ exports.pathRelativity = {
 exports.wsCategory = {
   generic: 'generic',
   dirtyFlag: 'dirtyFlag',
+  sessionCreationError: 'sessionCreationError',
   init: 'init',
   tick: 'tick',
 }

src/boot/ws.js

@@ -17,6 +17,7 @@
 import Vue from 'vue'
 import Events from 'events'
 import dbEnum from '../../src-shared/db-enum.js'
+import { Notify } from 'quasar'
 
 let eventEmitter = new Events.EventEmitter()
 
@@ -102,8 +103,24 @@ onWebSocket(dbEnum.wsCategory.tick, (data) =>
 onWebSocket(dbEnum.wsCategory.dirtyFlag, (data) => {
   document.documentElement.setAttribute('isdirty', data)
   console.log(`Dirty flag received: ${data}`)
-}
-)
+})
+
+onWebSocket(dbEnum.wsCategory.sessionCreationError, (data) => {
+  let html = `<center>
+  <strong>${data.error}</strong>
+  <br>
+  ${data.errorMessage}
+  </center>` 
+  Notify.create({
+    message: html,
+    color: 'negative',
+    position: 'top',
+    html: true,
+    timeout: 0,
+  })
+
+  console.log(`sessionCreationError: ${JSON.stringify(data)}`)
+})
 
 onWebSocket(dbEnum.wsCategory.generic, (data) =>
   console.log(`Generic message received: ${JSON.stringify(data)}`)