Add log level to logger

This is mostly so I can avoid the request logging which pushes out other
logs pretty fast.

packages/logger/src/logger.ts

@@ -1,3 +1,13 @@
+/**
+ * Log level.
+ */
+export enum Level {
+	Debug = 0,
+	Info = 1,
+	Warn = 2,
+	Error = 3,
+}
+
 /**
  * A field to log.
  */
@@ -221,12 +231,12 @@ export class ServerFormatter extends Formatter {
 
 	public fields(fields: Array<Field<any>>): void {
 		const obj = {} as any;
-		this.format += "\u001B[38;2;140;140;140m"
+		this.format += "\u001B[38;2;140;140;140m";
 		fields.forEach((field) => {
 			obj[field.identifier] = field.value;
 		});
 		this.args.push(JSON.stringify(obj));
-		console.log(...this.flush());
+		console.log(...this.flush()); // tslint:disable-line no-console
 	}
 
 }
@@ -236,6 +246,8 @@ export class ServerFormatter extends Formatter {
  */
 export class Logger {
 
+	public level = Level.Debug;
+
 	private readonly nameColor?: string;
 	private muted: boolean;
 
@@ -265,48 +277,56 @@ export class Logger {
 	 * Outputs information.
 	 */
 	public info(msg: string, ...fields: FieldArray): void {
-		this.handle({
-			type: "info",
-			message: msg,
-			fields,
-			tagColor: "#008FBF",
-		});
+		if (this.level <= Level.Info) {
+			this.handle({
+				type: "info",
+				message: msg,
+				fields,
+				tagColor: "#008FBF",
+			});
+		}
 	}
 
 	/**
 	 * Outputs a warning.
 	 */
 	public warn(msg: string, ...fields: FieldArray): void {
-		this.handle({
-			type: "warn",
-			message: msg,
-			fields,
-			tagColor: "#FF9D00",
-		});
+		if (this.level <= Level.Warn) {
+			this.handle({
+				type: "warn",
+				message: msg,
+				fields,
+				tagColor: "#FF9D00",
+			});
+		}
 	}
 
 	/**
 	 * Outputs a debug message.
 	 */
 	public debug(msg: string, ...fields: FieldArray): void {
-		this.handle({
-			type: "debug",
-			message: msg,
-			fields,
-			tagColor: "#84009E",
-		});
+		if (this.level <= Level.Debug) {
+			this.handle({
+				type: "debug",
+				message: msg,
+				fields,
+				tagColor: "#84009E",
+			});
+		}
 	}
 
 	/**
 	 * Outputs an error.
 	 */
 	public error(msg: string, ...fields: FieldArray): void {
-		this.handle({
-			type: "error",
-			message: msg,
-			fields,
-			tagColor: "#B00000",
-		});
+		if (this.level <= Level.Error) {
+			this.handle({
+				type: "error",
+				message: msg,
+				fields,
+				tagColor: "#B00000",
+			});
+		}
 	}
 
 	/**

packages/server/src/cli.ts

@@ -1,4 +1,4 @@
-import { field, logger } from "@coder/logger";
+import { field, logger, Level } from "@coder/logger";
 import { ServerMessage, SharedProcessActiveMessage } from "@coder/protocol/src/proto";
 import { Command, flags } from "@oclif/command";
 import * as fs from "fs";
@@ -20,6 +20,7 @@ export class Entry extends Command {
 		host: flags.string({ char: "h", default: "0.0.0.0" }),
 		open: flags.boolean({ char: "o", description: "Open in browser on startup" }),
 		port: flags.integer({ char: "p", default: 8080, description: "Port to bind on" }),
+		logLevel: flags.enum({ char: "l", options: [ "debug", "info", "warn", "error" ]}),
 		version: flags.version({ char: "v" }),
 
 		// Dev flags
@@ -50,6 +51,15 @@ export class Entry extends Command {
 
 		const { args, flags } = this.parse(Entry);
 
+		if (flags.logLevel) {
+			switch (flags.logLevel) {
+				case "debug": logger.level = Level.Debug; break;
+				case "info": logger.level = Level.Info; break;
+				case "warn": logger.level = Level.Warn; break;
+				case "error": logger.level = Level.Error; break;
+			}
+		}
+
 		if (flags["bootstrap-fork"]) {
 			const modulePath = flags["bootstrap-fork"];
 			if (!modulePath) {
@@ -57,8 +67,7 @@ export class Entry extends Command {
 				process.exit(1);
 			}
 
-			requireModule(modulePath);
-			return;
+			return requireModule(modulePath);
 		}
 
 		const dataDir = flags["data-dir"] || path.join(os.homedir(), ".vscode-online");
@@ -70,7 +79,7 @@ export class Entry extends Command {
 		logger.info("Initializing", field("data-dir", dataDir), field("working-dir", workingDir));
 		const sharedProcess = new SharedProcess(dataDir);
 		logger.info("Starting shared process...", field("socket", sharedProcess.socketPath));
-		const sendSharedProcessReady = (socket: WebSocket) => {
+		const sendSharedProcessReady = (socket: WebSocket): void => {
 			const active = new SharedProcessActiveMessage();
 			active.setSocketPath(sharedProcess.socketPath);
 			const serverMessage = new ServerMessage();