Capture and swallow unhandled SIGPIPE signal.

To be able to work around the backend process crash and offline status.

Ref: eclipse-theia/theia#8660
Signed-off-by: Akos Kitta <kittaakos@typefox.io>

Author: Akos Kitta

arduino-ide-extension/src/node/arduino-ide-backend-module.ts

@@ -4,7 +4,7 @@ import { join } from 'path';
 import { ContainerModule } from 'inversify';
 import { ArduinoDaemonImpl } from './arduino-daemon-impl';
 import { ILogger } from '@theia/core/lib/common/logger';
-import { BackendApplicationContribution } from '@theia/core/lib/node/backend-application';
+import { BackendApplicationContribution, BackendApplication as TheiaBackendApplication } from '@theia/core/lib/node/backend-application';
 import { LibraryService, LibraryServicePath } from '../common/protocol/library-service';
 import { BoardsService, BoardsServicePath } from '../common/protocol/boards-service';
 import { LibraryServiceImpl } from './library-service-server-impl';
@@ -38,8 +38,12 @@ import { ExecutableServiceImpl } from './executable-service-impl';
 import { OutputServicePath, OutputService } from '../common/protocol/output-service';
 import { NotificationServiceServerImpl } from './notification-service-server';
 import { NotificationServiceServer, NotificationServiceClient, NotificationServicePath } from '../common/protocol';
+import { BackendApplication } from './theia/core/backend-application';
 
 export default new ContainerModule((bind, unbind, isBound, rebind) => {
+    bind(BackendApplication).toSelf().inSingletonScope();
+    rebind(TheiaBackendApplication).toService(BackendApplication);
+
     // Shared config service
     bind(ConfigFileValidator).toSelf().inSingletonScope();
     bind(ConfigServiceImpl).toSelf().inSingletonScope();

arduino-ide-extension/src/node/theia/core/backend-application.ts

@@ -0,0 +1,19 @@
+import { inject, injectable, named } from 'inversify';
+import { ContributionProvider } from '@theia/core/lib/common/contribution-provider';
+import { BackendApplication as TheiaBackendApplication, BackendApplicationContribution, BackendApplicationCliContribution } from '@theia/core/lib/node/backend-application';
+
+@injectable()
+export class BackendApplication extends TheiaBackendApplication {
+
+    constructor(
+        @inject(ContributionProvider) @named(BackendApplicationContribution) protected readonly contributionsProvider: ContributionProvider<BackendApplicationContribution>,
+        @inject(BackendApplicationCliContribution) protected readonly cliParams: BackendApplicationCliContribution
+    ) {
+        super(contributionsProvider, cliParams);
+        // Workaround for Electron not installing a handler to ignore SIGPIPE
+        // (https://github.com/electron/electron/issues/13254)
+        // From VS Code: https://github.com/microsoft/vscode/blob/d0c90c9f3ea8d34912194176241503a44b3abd80/src/bootstrap.js#L31-L37
+        process.on('SIGPIPE', () => console.error(new Error('Unexpected SIGPIPE signal.')));
+    }
+
+}