Unlink scripts submodule and commit contents as normal directory

scripts/services/tailFile.js

@@ -0,0 +1,60 @@
+const fs = require('node:fs');
+const path = require('node:path');
+const TailFile = require('@logdna/tail-file');
+const split2 = require('split2');
+const logger = require('../logger.js');
+
+/**
+ * Starts tailing a log file, calling onLine for each new line.
+ * If the file does not exist, waits for it to be created (directory must exist).
+ *
+ * @param {string} filePath - Path to the log file.
+ * @param {Function} onLine - Callback invoked for each new line (receives the line string).
+ * @param {Object} [options]
+ * @param {string} [options.label] - Label for log messages (e.g., 'DIONAEA', 'SURICATA').
+ * @returns {Promise<TailFile|null>} Resolves with the TailFile instance once tailing starts, or null on error.
+ */
+module.exports = (filePath, onLine, options = {}) => {
+	const { label } = options;
+	const prefix = label ? `${label} -> ` : '';
+
+	const start = async () => {
+		const tail = new TailFile(filePath);
+		const onError = err => logger.error(`${prefix}${err.message || err}`);
+
+		tail.on('tail_error', onError);
+		tail.on('error', onError);
+		await tail.start();
+
+		tail.pipe(split2()).on('data', onLine).on('error', onError);
+		return tail;
+	};
+
+	if (fs.existsSync(filePath)) return start();
+
+	const resolved = path.resolve(filePath);
+	const dir = path.dirname(resolved);
+	const filename = path.basename(resolved);
+
+	if (!fs.existsSync(dir)) {
+		logger.error(`${prefix}Log file directory does not exist: ${dir}`);
+		return Promise.resolve(null);
+	}
+
+	logger.warn(`${prefix}Log file does not exist yet: ${filePath}. Waiting for it to be created...`);
+
+	return new Promise(resolve => {
+		const watcher = fs.watch(dir, (event, file) => {
+			if (file === filename && fs.existsSync(filePath)) {
+				watcher.close();
+				logger.info(`${prefix}Log file detected: ${filePath}. Starting tail...`);
+				resolve(start());
+			}
+		});
+
+		watcher.on('error', err => {
+			logger.error(`${prefix}Failed to watch directory ${dir}: ${err.message}`);
+			resolve(null);
+		});
+	});
+};