Introduce buffered console logger

ts/logging/debuglogs.ts

@@ -39,7 +39,6 @@ const getHeader = (
     capabilities,
     remoteConfig,
     statistics,
-    appMetrics,
     user,
   }: Omit<FetchLogIpcData, 'logEntries'>,
   nodeVersion: string,
@@ -57,29 +56,6 @@ const getHeader = (
     headerSection('User info', user),
     headerSection('Capabilities', capabilities),
     headerSection('Remote config', remoteConfig),
-    headerSection(
-      'Metrics',
-      appMetrics.reduce((acc, stats, index) => {
-        const {
-          type = '?',
-          serviceName = '?',
-          name = '?',
-          cpu,
-          memory,
-        } = stats;
-
-        const processId = `${index}:${type}/${serviceName}/${name}`;
-
-        return {
-          ...acc,
-          [processId]:
-            `cpuUsage=${cpu.percentCPUUsage.toFixed(2)} ` +
-            `wakeups=${cpu.idleWakeupsPerSecond} ` +
-            `workingMemory=${memory.workingSetSize} ` +
-            `peakWorkingMemory=${memory.peakWorkingSetSize}`,
-        };
-      }, {})
-    ),
     headerSection('Statistics', statistics),
     headerSectionTitle('Logs'),
   ].join('\n');

ts/logging/main_process_logging.ts

@@ -26,7 +26,6 @@ import { CircularBuffer } from 'cirbuf';
 
 import type { LoggerType } from '../types/Logging';
 import * as Errors from '../types/errors';
-import * as durations from '../util/durations';
 import { createRotatingPinoDest } from '../util/rotatingPinoDest';
 
 import * as log from './log';
@@ -64,13 +63,6 @@ export async function initialize(
   const logPath = join(basePath, 'logs');
   mkdirSync(logPath, { recursive: true });
 
-  let appMetrics = app.getAppMetrics();
-
-  setInterval(() => {
-    // CPU stats are computed since the last call to `getAppMetrics`.
-    appMetrics = app.getAppMetrics();
-  }, 30 * durations.SECOND).unref();
-
   try {
     await cleanupLogs(logPath);
   } catch (error) {
@@ -141,7 +133,6 @@ export async function initialize(
       ]);
       data = {
         logEntries,
-        appMetrics,
         ...rest,
       };
     } catch (error) {
@@ -340,7 +331,7 @@ export function fetchLogs(logPath: string): Promise<Array<LogEntryType>> {
 
 export const fetchAdditionalLogData = (
   mainWindow: BrowserWindow
-): Promise<Omit<FetchLogIpcData, 'logEntries' | 'appMetrics'>> =>
+): Promise<Omit<FetchLogIpcData, 'logEntries'>> =>
   new Promise(resolve => {
     mainWindow.webContents.send('additional-log-data-request');
     ipc.once('additional-log-data-response', (_event, data) => {

ts/logging/shared.ts

@@ -2,7 +2,6 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import pino from 'pino';
-import type { ProcessMetric } from 'electron';
 import { isRecord } from '../util/isRecord';
 import { redactAll } from '../util/privacy';
 import { missingCaseError } from '../util/missingCaseError';
@@ -16,7 +15,6 @@ export type FetchLogIpcData = {
   remoteConfig: Record<string, unknown>;
   statistics: Record<string, unknown>;
   user: Record<string, unknown>;
-  appMetrics: ReadonlyArray<ProcessMetric>;
 
   // We expect `logEntries` to be `Array<LogEntryType>`, but we don't validate that
   //   upfront—we only validate it when we go to log each line. This improves the

ts/util/consoleLogger.ts

@@ -24,4 +24,48 @@ export const consoleLogger: LoggerType = {
     console.log(...args);
   },
 };
+
+export type BufferedLoggerType = LoggerType & {
+  writeBufferInto(logger: LoggerType): void;
+};
+
+export function createBufferedConsoleLogger(): BufferedLoggerType {
+  type BufferEntryType = Readonly<{
+    level: keyof LoggerType;
+    args: Array<unknown>;
+  }>;
+  const buffer = new Array<BufferEntryType>();
+  return {
+    fatal(...args: Array<unknown>) {
+      buffer.push({ level: 'fatal', args });
+      console.error(...args);
+    },
+    error(...args: Array<unknown>) {
+      buffer.push({ level: 'error', args });
+      console.error(...args);
+    },
+    warn(...args: Array<unknown>) {
+      buffer.push({ level: 'warn', args });
+      console.warn(...args);
+    },
+    info(...args: Array<unknown>) {
+      buffer.push({ level: 'info', args });
+      console.info(...args);
+    },
+    debug(...args: Array<unknown>) {
+      buffer.push({ level: 'debug', args });
+      console.debug(...args);
+    },
+    trace(...args: Array<unknown>) {
+      buffer.push({ level: 'trace', args });
+      console.log(...args);
+    },
+
+    writeBufferInto(output) {
+      for (const { level, args } of buffer) {
+        output[level](...args);
+      }
+    },
+  };
+}
 /* eslint-enable no-console */