Files
compiler-explorer/app.ts
Matt Godbolt f94ff8332a Refactor: Split app.ts into smaller modules (#7681)
## Summary
This PR significantly improves maintainability by breaking up the 880+ line monolithic app.ts file into smaller, focused modules with proper testing. The code is now organized into dedicated modules under the lib/app/ directory, making the codebase more maintainable and testable.

## Key changes
- Extract functionality into modules under lib/app/ directory:
  - Command-line handling (cli.ts)
  - Configuration loading (config.ts)
  - Web server setup and middleware (server.ts)
  - Core application initialization (main.ts)
  - URL handlers, routing, rendering, and controllers
- Add comprehensive unit tests for all new modules
- Make compilationQueue non-optional in the compilation environment
- Improve separation of concerns with dedicated interfaces
- Ensure backward compatibility with existing functionality
- Maintain cross-platform compatibility (Windows/Linux)

## Benefits
- Improved code organization and modularity
- Enhanced testability with proper unit tests
- Better separation of concerns
- Reduced complexity in individual files
- Easier maintenance and future development

This refactoring is a significant step toward a more maintainable codebase while preserving all existing functionality.
2025-05-20 17:53:24 -05:00

85 lines
3.4 KiB
TypeScript
Executable File

// Copyright (c) 2025, Compiler Explorer Authors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
////
// see https://docs.sentry.io/platforms/javascript/guides/node/install/late-initialization/
import '@sentry/node/preload'; // preload Sentry's "preload" support before any other imports
////
import process from 'node:process';
import {parseArgsToAppArguments} from './lib/app/cli.js';
import {loadConfiguration} from './lib/app/config.js';
import {initialiseApplication} from './lib/app/main.js';
import {setBaseDirectory} from './lib/assert.js';
import {initialiseLogging, logger} from './lib/logger.js';
import * as props from './lib/properties.js';
import * as utils from './lib/utils.js';
// Set base directory for resolving paths
setBaseDirectory(new URL('.', import.meta.url));
// Set up signal handlers
process.on('uncaughtException', uncaughtHandler);
process.on('SIGINT', signalHandler('SIGINT'));
process.on('SIGTERM', signalHandler('SIGTERM'));
process.on('SIGQUIT', signalHandler('SIGQUIT'));
function signalHandler(name: string) {
return () => {
logger.info(`stopping process: ${name}`);
process.exit(0);
};
}
function uncaughtHandler(err: Error, origin: NodeJS.UncaughtExceptionOrigin) {
logger.info(`stopping process: Uncaught exception: ${err}\nException origin: ${origin}`);
// The app will exit naturally from here, but if we call `process.exit()` we may lose log lines.
// see https://github.com/winstonjs/winston/issues/1504#issuecomment-1033087411
process.exitCode = 1;
}
// Parse command line arguments
const appArgs = parseArgsToAppArguments(process.argv);
if (appArgs.isWsl) process.env.wsl = 'true';
// Initialize logging reasonably early in startup
initialiseLogging(appArgs.loggingOptions);
// Load configuration
const distPath = utils.resolvePathFromAppRoot('.');
const config = loadConfiguration(appArgs);
const awsProps = props.propsFor('aws');
// Initialize and start the application
initialiseApplication({
appArgs,
config,
distPath,
awsProps,
}).catch(err => {
logger.error('Top-level error (shutting down):', err);
// Shut down after a second to hopefully let logs flush.
setTimeout(() => process.exit(1), 1000);
});