Improve handling of deployment failures

src/app/services/processcommand.ts

@@ -1,5 +1,5 @@
 export class ProcessCommand {
   command: string;
   process_name: string;
-  error: boolean
+  error?: string;
 }

src/app/services/processmanager.service.ts

@@ -16,9 +16,17 @@ export class ProcessManagerService {
     this.webSocketService.connect();
   }
 
-  subscribeCallback(process_name: string, error: boolean, callback: (event: any) => void) {
-    this.webSocketService.observeKey<ProcessCommand>(this.key)
-      .pipe(filter(message => message.data.process_name === process_name && message.data.error === error)).subscribe(callback);
+  subscribeCallback(process_name: string, callback: (event: any) => void) {
+    this.observeProcessMessage(process_name).subscribe(callback);
+  }
+
+  subscribeErrorCallback(process_name: string, callback: (event: any) => void) {
+    this.observeProcessMessage(process_name).pipe(filter(message => 'error' in message.data)).subscribe(callback);
+  }
+
+  observeProcessMessage(process_name: string) {
+    return this.webSocketService.observeKey<ProcessCommand>(this.key)
+      .pipe(filter(message => message.data.process_name === process_name));
   }
 
   sendCommand(command: string, process_name: string) {

src/app/webide/webide.component.ts

@@ -50,8 +50,8 @@ export class WebideComponent implements OnInit {
     this.subscribeWS();
     this.requestCode();
     this.processManagerService.init();
-    this.processManagerService.subscribeCallback('login', false, (event) => { this.setDeployButtonState('DEPLOYED'); });
-    this.processManagerService.subscribeCallback('login', true, (event) => { this.setDeployButtonState('FAILED'); });
+    this.processManagerService.subscribeCallback('login', (event) => { this.setDeployButtonState('DEPLOYED'); });
+    this.processManagerService.subscribeErrorCallback('login', (event) => { this.setDeployButtonState('FAILED'); });
     this.resetAutoSaveCountdown();
   }