Add logger to project manager

Summary: I have noticed some strange behavior regarding diagnostics with cquery and multiple different but related projects open. I have the impression different cquery processes could be sending diagnostics on files they do not directly compile. I think adding some logging will help me debug the issue.

Reviewed By: a20012251

Differential Revision: D6451984

fbshipit-source-id: ec1a8088e96870059f608de20d56be6979475cd7

pkg/nuclide-cquery-lsp-rpc/lib/CqueryLanguageServer.js

@@ -32,7 +32,7 @@ export default class CqueryLanguageServer extends MultiProjectLanguageService<
   CqueryLanguageClient,
 > implements CqueryLanguageService {
   // Maps clang settings => settings metadata with same key as _processes field.
-  _projectManager: CqueryProjectManager = new CqueryProjectManager();
+  _projectManager: CqueryProjectManager;
   _fileCache: FileCache;
   _command: string;
   _host: HostServices;
@@ -53,6 +53,7 @@ export default class CqueryLanguageServer extends MultiProjectLanguageService<
     this._host = host;
     this._languageId = languageId;
     this._logger = logger;
+    this._projectManager = new CqueryProjectManager(logger);
 
     this._processes = new Cache(
       (projectKey: CqueryProjectKey) =>

pkg/nuclide-cquery-lsp-rpc/lib/CqueryProjectManager.js

@@ -19,6 +19,11 @@ import fsPromise from 'nuclide-commons/fsPromise';
 export class CqueryProjectManager {
   _keyToProject: Map<CqueryProjectKey, CqueryProject> = new Map();
   _fileToProjectKey: Map<string, CqueryProjectKey> = new Map();
+  _logger: log4js$Logger;
+
+  constructor(logger: log4js$Logger) {
+    this._logger = logger;
+  }
 
   getProjectKey(project: CqueryProject): CqueryProjectKey {
     return JSON.stringify(project);
@@ -35,6 +40,7 @@ export class CqueryProjectManager {
 
   async getProjectForFile(file: string): Promise<?CqueryProject> {
     const key = this._fileToProjectKey.get(await fsPromise.realpath(file));
+    this._logger.debug('key for', file, ':', key);
     return key == null ? null : this._keyToProject.get(key);
   }
 

pkg/nuclide-cquery-lsp-rpc/lib/main.js

@@ -200,7 +200,7 @@ export async function createCqueryService(params: {|
   invariant(fileCache instanceof FileCache);
 
   return new CqueryLanguageServer(
-    'cquery', // id
+    languageId, // id
     command, // command
     logger,
     fileCache,