Add LSP tracing

vscode-dotty/package.json

@@ -11,7 +11,7 @@
   },
   "icon": "images/dotty-logo.png",
   "engines": {
-    "vscode": "^1.27.0"
+    "vscode": "^1.27.1"
   },
   "categories": [
     "Languages"
@@ -48,6 +48,19 @@
           "type": "boolean",
           "default": true,
           "description": "If true, saving a worksheet will also run it."
+        },
+        "dotty.tracing.machineId": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "default": null,
+          "description": "ID of your machine used when Dotty Language Server tracing is turned on."
+        },
+        "dotty.tracing.maximumMessageSize": {
+          "type": "number",
+          "default": 512,
+          "description": "Maximum size for the messages sent to remote server. Larger ones will be split."
         }
       }
     },
@@ -88,12 +101,18 @@
     "compare-versions": "^3.4.0",
     "vscode-languageclient": "^5.1.0",
     "vscode-languageserver": "^5.1.0",
-    "vscode-jsonrpc": "4.0.0"
+    "vscode-jsonrpc": "4.0.0",
+    "ws": "^6.0.0",
+    "archiver": "^3.0.0",
+    "request": "^2.88.0"
   },
   "devDependencies": {
     "@types/compare-versions": "^3.0.0",
     "@types/mocha": "^5.2.5",
     "@types/node": "^8.10.32",
+    "@types/ws": "^6.0.0",
+    "@types/archiver": "^2.1.2",
+    "@types/request": "^2.47.1",
     "typescript": "^2.9.2",
     "vscode": "^1.1.21"
   }

vscode-dotty/src/compat.ts

@@ -1,8 +1,8 @@
-import * as vscode from 'vscode';
+import * as vscode from 'vscode'
 
-import { HoverRequest } from 'vscode-languageclient';
+import { HoverRequest } from 'vscode-languageclient'
 import { MarkedString, LanguageClient, LanguageClientOptions, RevealOutputChannelOn,
-         ServerOptions } from 'vscode-languageclient';
+         ServerOptions } from 'vscode-languageclient'
 
 // Fix hover functionality when using this version of vscode-dotty with Dotty
 // Language Server 0.9 or earlier.

vscode-dotty/src/extension.ts

@@ -1,27 +1,30 @@
-'use strict';
+import * as fs from 'fs'
+import * as path from 'path'
 
-import * as fs from 'fs';
-import * as path from 'path';
+import * as pcp from 'promisify-child-process'
+import * as compareVersions from 'compare-versions'
 
-import * as pcp from 'promisify-child-process';
-import * as compareVersions from 'compare-versions';
+import { ChildProcess } from "child_process"
 
-import { ChildProcess } from "child_process";
-
-import { ExtensionContext } from 'vscode';
-import * as vscode from 'vscode';
+import { ExtensionContext } from 'vscode'
+import * as vscode from 'vscode'
 import { LanguageClient, LanguageClientOptions, RevealOutputChannelOn,
-         ServerOptions } from 'vscode-languageclient';
+         ServerOptions } from 'vscode-languageclient'
 import { enableOldServerWorkaround } from './compat'
 import * as features from './features'
 
 export let client: LanguageClient
 
 import * as rpc from 'vscode-jsonrpc'
 import * as sbtserver from './sbt-server'
+import { Tracer } from './tracer'
+
+export const extensionName = 'dotty'
+const extensionConfig = vscode.workspace.getConfiguration(extensionName)
 
 let extensionContext: ExtensionContext
 let outputChannel: vscode.OutputChannel
+let tracer: Tracer
 
 /** The sbt process that may have been started by this extension */
 let sbtProcess: ChildProcess | undefined
@@ -45,9 +48,14 @@ function isConfiguredProject() {
 
 export function activate(context: ExtensionContext) {
   extensionContext = context
-  outputChannel = vscode.window.createOutputChannel("Dotty");
+  outputChannel = vscode.window.createOutputChannel("Dotty")
+  tracer = new Tracer({
+    extensionContext,
+    extensionConfig,
+    extensionOut: outputChannel,
+  })
 
-  const coursierPath = path.join(extensionContext.extensionPath, "out", "coursier");
+  const coursierPath = path.join(extensionContext.extensionPath, "out", "coursier")
   const dottyPluginSbtFileSource = path.join(extensionContext.extensionPath, "out", "dotty-plugin.sbt")
   const buildSbtFileSource = path.join(extensionContext.extensionPath, "out", "build.sbt")
 
@@ -297,6 +305,9 @@ function bootstrapSbtProject(buildSbtFileSource: string,
 }
 
 function run(serverOptions: ServerOptions, isOldServer: boolean) {
+
+  const { lspOutputChannel } = tracer.run()
+
   const clientOptions: LanguageClientOptions = {
     documentSelector: [
       { scheme: 'file', pattern: '**/*.sc' },
@@ -307,11 +318,11 @@ function run(serverOptions: ServerOptions, isOldServer: boolean) {
     synchronize: {
       configurationSection: 'dotty'
     },
-    outputChannel: outputChannel,
+    outputChannel: lspOutputChannel,
     revealOutputChannelOn: RevealOutputChannelOn.Never
   }
 
-  client = new LanguageClient("dotty", "Dotty", serverOptions, clientOptions)
+  client = new LanguageClient(extensionName, "Dotty", serverOptions, clientOptions)
   client.registerFeature(new features.WorksheetRunFeature(client))
 
   if (isOldServer)

vscode-dotty/src/features.ts

@@ -14,9 +14,9 @@ import { WorksheetProvider } from './worksheet'
 // https://github.com/Microsoft/vscode-languageserver-node/issues/423 is fixed.
 function ensure<T, K extends keyof T>(target: T, key: K): T[K] {
   if (target[key] === void 0) {
-    target[key] = {} as any;
+    target[key] = {} as any
   }
-  return target[key];
+  return target[key]
 }
 
 export interface WorksheetClientCapabilities {

vscode-dotty/src/passthrough-server.ts

@@ -1,6 +1,4 @@
-'use strict';
-
-import * as net from 'net';
+import * as net from 'net'
 
 let argv: string[] = process.argv.slice(2)
 const firstArg: string | undefined = argv.shift()
@@ -22,7 +20,7 @@ client.on('data', (data) => {
   process.stdout.write(data.toString())
 })
 process.stdin.on('readable', () => {
-  let chunk = process.stdin.read();
+  let chunk = process.stdin.read()
   if (chunk !== null) {
     if (isConnected) {
       client.write(chunk)

vscode-dotty/src/sbt-server.ts

@@ -79,25 +79,25 @@ function connectSocket(socket: net.Socket): net.Socket {
   if (u.protocol == 'tcp:' && u.port) {
     socket.connect(+u.port, '127.0.0.1');
   } else if (u.protocol == 'local:' && u.hostname && os.platform() == 'win32') {
-    let pipePath = '\\\\.\\pipe\\' + u.hostname;
-    socket.connect(pipePath);
+    let pipePath = '\\\\.\\pipe\\' + u.hostname
+    socket.connect(pipePath)
   } else if (u.protocol == 'local:' && u.path) {
-    socket.connect(u.path);
+    socket.connect(u.path)
   } else {
-    throw 'Unknown protocol ' + u.protocol;
+    throw 'Unknown protocol ' + u.protocol
   }
-  return socket;
+  return socket
 }
 
 // the port file is hardcoded to a particular location relative to the build.
 function discoverUrl(): url.Url {
-  let pf = path.join(workspaceRoot, 'project', 'target', 'active.json');
-  let portfile = JSON.parse(fs.readFileSync(pf).toString());
-  return url.parse(portfile.uri);
+  let pf = path.join(workspaceRoot, 'project', 'target', 'active.json')
+  let portfile = JSON.parse(fs.readFileSync(pf).toString())
+  return url.parse(portfile.uri)
 }
 
 function delay(ms: number) {
-	return new Promise(resolve => setTimeout(resolve, ms));
+	return new Promise(resolve => setTimeout(resolve, ms))
 }
 
 async function waitForServer(): Promise<net.Socket> {
@@ -106,12 +106,12 @@ async function waitForServer(): Promise<net.Socket> {
     location: vscode.ProgressLocation.Window,
     title: "Connecting to sbt server..."
   }, async _ => {
-    let retries = 60;
+    let retries = 60
     while (!socket && retries > 0) {
       try { socket = connectSocket(new net.Socket()) }
       catch (e) {
-        retries--;
-        await delay(1000);
+        retries--
+        await delay(1000)
       }
     }
     if (socket) return Promise.resolve(socket)