From c37fd4dbe2d63d6860e21c790253fe4574279cdf Mon Sep 17 00:00:00 2001
From: Eric Mc Sween <5454374+emcsween@users.noreply.github.com>
Date: Fri, 12 Sep 2025 09:44:48 -0400
Subject: [PATCH] Merge pull request #28459 from
 overleaf/em-history-restore-metrics

Add revert file/project timing metrics

GitOrigin-RevId: 5c701f70b8d8dcb9052c6559815e05bc3af9bcad
---
 .../app/src/Features/History/RestoreManager.js    |  6 ++++++
 services/web/app/src/infrastructure/Metrics.js    | 15 +++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/services/web/app/src/Features/History/RestoreManager.js b/services/web/app/src/Features/History/RestoreManager.js
index 6eeef34a8f..8781593bb8 100644
--- a/services/web/app/src/Features/History/RestoreManager.js
+++ b/services/web/app/src/Features/History/RestoreManager.js
@@ -1,6 +1,7 @@
 const Settings = require('@overleaf/settings')
 const Path = require('path')
 const FileWriter = require('../../infrastructure/FileWriter')
+const Metrics = require('../../infrastructure/Metrics')
 const FileSystemImportManager = require('../Uploads/FileSystemImportManager')
 const EditorController = require('../Editor/EditorController')
 const Errors = require('../Errors/Errors')
@@ -77,6 +78,7 @@ const RestoreManager = {
     threadIds,
     options = {}
   ) {
+    const endTimer = Metrics.revertFileDurationSeconds.startTimer()
     const project = await ProjectGetter.promises.getProject(projectId, {
       overleaf: true,
       rootDoc_id: true,
@@ -176,6 +178,7 @@ const RestoreManager = {
         userId
       )
 
+      endTimer({ type: 'file' })
       return {
         _id: newFile._id,
         type: 'file',
@@ -296,6 +299,7 @@ const RestoreManager = {
       new Set(newRanges.comments.map(({ op: { t } }) => t))
     )
 
+    endTimer({ type: 'doc' })
     return {
       _id,
       type: importInfo.type,
@@ -333,6 +337,7 @@ const RestoreManager = {
   },
 
   async revertProject(userId, projectId, version) {
+    const endTimer = Metrics.revertProjectDurationSeconds.startTimer()
     const project = await ProjectGetter.promises.getProject(projectId, {
       overleaf: true,
     })
@@ -398,6 +403,7 @@ const RestoreManager = {
       }
     }
 
+    endTimer()
     return reverted
   },
 
diff --git a/services/web/app/src/infrastructure/Metrics.js b/services/web/app/src/infrastructure/Metrics.js
index 2185c3c6dd..b0fbf7aabd 100644
--- a/services/web/app/src/infrastructure/Metrics.js
+++ b/services/web/app/src/infrastructure/Metrics.js
@@ -1,3 +1,5 @@
+// @ts-check
+
 const Metrics = require('@overleaf/metrics')
 
 exports.analyticsQueue = new Metrics.prom.Counter({
@@ -5,3 +7,16 @@ exports.analyticsQueue = new Metrics.prom.Counter({
   help: 'Number of events sent to the analytics queue',
   labelNames: ['status', 'event_type'],
 })
+
+exports.revertFileDurationSeconds = new Metrics.prom.Histogram({
+  name: 'timer_revert_file_duration_seconds',
+  help: 'Duration of the file restore operation',
+  buckets: [0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5],
+  labelNames: ['type'],
+})
+
+exports.revertProjectDurationSeconds = new Metrics.prom.Histogram({
+  name: 'timer_revert_project_duration_seconds',
+  help: 'Duration of the project restore operation',
+  buckets: [0.5, 1, 2, 5, 10, 30, 60, 120, 300, 900, 1800],
+})