inspectorProfiler.js 22 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", { value: true });
  3. const tslib_1 = require("tslib");
  4. const configuration_1 = require("../configuration");
  5. const serviceManager_1 = require("../serviceManager");
  6. const miscellaneous_1 = require("../utils/miscellaneous");
  7. const Debug = require("debug");
  8. const semver = require("semver");
  9. class CurrentProfile {
  10. }
  11. class InspectorProfiler {
  12. constructor() {
  13. this.profiler = undefined;
  14. this.currentProfile = null;
  15. this.logger = Debug('axm:features:profiling:inspector');
  16. this.isNode11 = semver.satisfies(semver.clean(process.version), '>11.x');
  17. }
  18. init() {
  19. this.profiler = serviceManager_1.ServiceManager.get('inspector');
  20. if (this.profiler === undefined) {
  21. configuration_1.default.configureModule({
  22. heapdump: false,
  23. 'feature.profiler.heap_snapshot': false,
  24. 'feature.profiler.heap_sampling': false,
  25. 'feature.profiler.cpu_js': false
  26. });
  27. return console.error(`Failed to require the profiler via inspector, disabling profiling ...`);
  28. }
  29. this.profiler.getSession().post('Profiler.enable');
  30. this.profiler.getSession().post('HeapProfiler.enable');
  31. this.logger('init');
  32. this.actionService = serviceManager_1.ServiceManager.get('actions');
  33. if (this.actionService === undefined) {
  34. return this.logger(`Fail to get action service`);
  35. }
  36. this.transport = serviceManager_1.ServiceManager.get('transport');
  37. if (this.transport === undefined) {
  38. return this.logger(`Fail to get transport service`);
  39. }
  40. configuration_1.default.configureModule({
  41. heapdump: true,
  42. 'feature.profiler.heapsnapshot': !this.isNode11,
  43. 'feature.profiler.heapsampling': true,
  44. 'feature.profiler.cpu_js': true
  45. });
  46. this.register();
  47. }
  48. register() {
  49. if (this.actionService === undefined) {
  50. return this.logger(`Fail to get action service`);
  51. }
  52. this.logger('register');
  53. this.actionService.registerAction('km:heapdump', this.onHeapdump.bind(this));
  54. this.actionService.registerAction('km:cpu:profiling:start', this.onCPUProfileStart.bind(this));
  55. this.actionService.registerAction('km:cpu:profiling:stop', this.onCPUProfileStop.bind(this));
  56. this.actionService.registerAction('km:heap:sampling:start', this.onHeapProfileStart.bind(this));
  57. this.actionService.registerAction('km:heap:sampling:stop', this.onHeapProfileStop.bind(this));
  58. }
  59. destroy() {
  60. this.logger('Inspector Profiler destroyed !');
  61. if (this.profiler === undefined)
  62. return;
  63. this.profiler.getSession().post('Profiler.disable');
  64. this.profiler.getSession().post('HeapProfiler.disable');
  65. }
  66. onHeapProfileStart(opts, cb) {
  67. if (typeof cb !== 'function') {
  68. cb = opts;
  69. opts = {};
  70. }
  71. if (typeof opts !== 'object' || opts === null) {
  72. opts = {};
  73. }
  74. if (this.profiler === undefined) {
  75. return cb({
  76. err: 'Profiler not available',
  77. success: false
  78. });
  79. }
  80. if (this.currentProfile !== null) {
  81. return cb({
  82. err: 'A profiling is already running',
  83. success: false
  84. });
  85. }
  86. this.currentProfile = new CurrentProfile();
  87. this.currentProfile.uuid = miscellaneous_1.default.generateUUID();
  88. this.currentProfile.startTime = Date.now();
  89. this.currentProfile.initiated = typeof opts.initiated === 'string'
  90. ? opts.initiated : 'manual';
  91. cb({ success: true, uuid: this.currentProfile.uuid });
  92. const defaultSamplingInterval = 16384;
  93. this.profiler.getSession().post('HeapProfiler.startSampling', {
  94. samplingInterval: typeof opts.samplingInterval === 'number'
  95. ? opts.samplingInterval : defaultSamplingInterval
  96. });
  97. if (isNaN(parseInt(opts.timeout, 10)))
  98. return;
  99. const duration = parseInt(opts.timeout, 10);
  100. setTimeout(_ => {
  101. this.onHeapProfileStop(_ => {
  102. return;
  103. });
  104. }, duration);
  105. }
  106. onHeapProfileStop(cb) {
  107. if (this.currentProfile === null) {
  108. return cb({
  109. err: 'No profiling are already running',
  110. success: false
  111. });
  112. }
  113. if (this.profiler === undefined) {
  114. return cb({
  115. err: 'Profiler not available',
  116. success: false
  117. });
  118. }
  119. cb({ success: true, uuid: this.currentProfile.uuid });
  120. this.profiler.getSession().post('HeapProfiler.stopSampling', (_, { profile }) => {
  121. if (this.currentProfile === null)
  122. return;
  123. if (this.transport === undefined)
  124. return;
  125. const data = JSON.stringify(profile);
  126. this.transport.send('profilings', {
  127. uuid: this.currentProfile.uuid,
  128. duration: Date.now() - this.currentProfile.startTime,
  129. at: this.currentProfile.startTime,
  130. data,
  131. success: true,
  132. initiated: this.currentProfile.initiated,
  133. type: 'heapprofile',
  134. heapprofile: true
  135. });
  136. this.currentProfile = null;
  137. });
  138. }
  139. onCPUProfileStart(opts, cb) {
  140. if (typeof cb !== 'function') {
  141. cb = opts;
  142. opts = {};
  143. }
  144. if (typeof opts !== 'object' || opts === null) {
  145. opts = {};
  146. }
  147. if (this.profiler === undefined) {
  148. return cb({
  149. err: 'Profiler not available',
  150. success: false
  151. });
  152. }
  153. if (this.currentProfile !== null) {
  154. return cb({
  155. err: 'A profiling is already running',
  156. success: false
  157. });
  158. }
  159. this.currentProfile = new CurrentProfile();
  160. this.currentProfile.uuid = miscellaneous_1.default.generateUUID();
  161. this.currentProfile.startTime = Date.now();
  162. this.currentProfile.initiated = typeof opts.initiated === 'string'
  163. ? opts.initiated : 'manual';
  164. cb({ success: true, uuid: this.currentProfile.uuid });
  165. if (process.hasOwnProperty('_startProfilerIdleNotifier') === true) {
  166. process._startProfilerIdleNotifier();
  167. }
  168. this.profiler.getSession().post('Profiler.start');
  169. if (isNaN(parseInt(opts.timeout, 10)))
  170. return;
  171. const duration = parseInt(opts.timeout, 10);
  172. setTimeout(_ => {
  173. this.onCPUProfileStop(_ => {
  174. return;
  175. });
  176. }, duration);
  177. }
  178. onCPUProfileStop(cb) {
  179. if (this.currentProfile === null) {
  180. return cb({
  181. err: 'No profiling are already running',
  182. success: false
  183. });
  184. }
  185. if (this.profiler === undefined) {
  186. return cb({
  187. err: 'Profiler not available',
  188. success: false
  189. });
  190. }
  191. cb({ success: true, uuid: this.currentProfile.uuid });
  192. if (process.hasOwnProperty('_stopProfilerIdleNotifier') === true) {
  193. process._stopProfilerIdleNotifier();
  194. }
  195. this.profiler.getSession().post('Profiler.stop', (_, res) => {
  196. if (this.currentProfile === null)
  197. return;
  198. if (this.transport === undefined)
  199. return;
  200. const profile = res.profile;
  201. const data = JSON.stringify(profile);
  202. this.transport.send('profilings', {
  203. uuid: this.currentProfile.uuid,
  204. duration: Date.now() - this.currentProfile.startTime,
  205. at: this.currentProfile.startTime,
  206. data,
  207. success: true,
  208. initiated: this.currentProfile.initiated,
  209. type: 'cpuprofile',
  210. cpuprofile: true
  211. });
  212. this.currentProfile = null;
  213. });
  214. }
  215. onHeapdump(opts, cb) {
  216. if (typeof cb !== 'function') {
  217. cb = opts;
  218. opts = {};
  219. }
  220. if (typeof opts !== 'object' || opts === null) {
  221. opts = {};
  222. }
  223. if (this.profiler === undefined) {
  224. return cb({
  225. err: 'Profiler not available',
  226. success: false
  227. });
  228. }
  229. cb({ success: true });
  230. setTimeout(() => {
  231. const startTime = Date.now();
  232. this.takeSnapshot()
  233. .then(data => {
  234. return this.transport.send('profilings', {
  235. data,
  236. at: startTime,
  237. initiated: typeof opts.initiated === 'string' ? opts.initiated : 'manual',
  238. duration: Date.now() - startTime,
  239. type: 'heapdump'
  240. });
  241. }).catch(err => {
  242. return cb({
  243. success: err.message,
  244. err: err
  245. });
  246. });
  247. }, 200);
  248. }
  249. takeSnapshot() {
  250. return new Promise((resolve, reject) => tslib_1.__awaiter(this, void 0, void 0, function* () {
  251. if (this.profiler === undefined)
  252. return reject(new Error(`Profiler not available`));
  253. const chunks = [];
  254. const chunkHandler = (raw) => {
  255. const data = raw.params;
  256. chunks.push(data.chunk);
  257. };
  258. this.profiler.getSession().on('HeapProfiler.addHeapSnapshotChunk', chunkHandler);
  259. yield this.profiler.getSession().post('HeapProfiler.takeHeapSnapshot', {
  260. reportProgress: false
  261. });
  262. this.profiler.getSession().removeListener('HeapProfiler.addHeapSnapshotChunk', chunkHandler);
  263. return resolve(chunks.join(''));
  264. }));
  265. }
  266. }
  267. exports.default = InspectorProfiler;
  268. //# 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