FIX: remove post upload record creation inside 'find_missing_uploads' method.

app/models/post.rb

@@ -955,10 +955,7 @@ class Post < ActiveRecord::Base
             upload_id = Upload.where(sha1: sha1).pluck(:id).first if sha1.present?
             upload_id ||= yield(post, src, path, sha1)
 
-            if upload_id.present?
-              attributes = { post_id: post.id, upload_id: upload_id }
-              PostUpload.create!(attributes) unless PostUpload.exists?(attributes)
-            else
+            if upload_id.blank?
               missing_uploads << src
               missing_post_uploads[post.id] << src
             end

lib/s3_inventory.rb

@@ -82,7 +82,7 @@ class S3Inventory
   def list_missing_post_uploads
     log "Listing missing post uploads..."
 
-    missing = Post.find_missing_uploads(include_local_upload: false) do |_, _, _, sha1|
+    missing = Post.find_missing_uploads(include_local_upload: false) do |post, _, _, sha1|
       next if sha1.blank?
 
       upload_id = nil
@@ -105,6 +105,7 @@ class S3Inventory
           )
           upload.save!(validate: false)
           upload_id = upload.id
+          post.link_post_uploads
         rescue Aws::S3::Errors::NotFound
           next
         end

spec/components/s3_inventory_spec.rb

@@ -82,8 +82,8 @@ describe "S3Inventory" do
 
   it "should backfill etags to uploads table correctly" do
     files = [
-      ["#{Discourse.store.absolute_base_url}/original/0184537a4f419224404d013414e913a4f56018f2.jpg", "defcaac0b4aca535c284e95f30d608d0"],
-      ["#{Discourse.store.absolute_base_url}/original/0789fbf5490babc68326b9cec90eeb0d6590db05.png", "25c02eaceef4cb779fc17030d33f7f06"]
+      ["#{Discourse.store.absolute_base_url}/original/1X/0184537a4f419224404d013414e913a4f56018f2.jpg", "defcaac0b4aca535c284e95f30d608d0"],
+      ["#{Discourse.store.absolute_base_url}/original/1X/0789fbf5490babc68326b9cec90eeb0d6590db05.png", "25c02eaceef4cb779fc17030d33f7f06"]
     ]
     files.each { |file| Fabricate(:upload, url: file[0]) }
 
@@ -97,4 +97,29 @@ describe "S3Inventory" do
 
     expect(Upload.by_users.order(:url).pluck(:url, :etag)).to eq(files)
   end
+
+  it "should recover missing uploads correctly" do
+    freeze_time
+
+    CSV.foreach(csv_filename, headers: false) do |row|
+      Fabricate(:upload, url: File.join(Discourse.store.absolute_base_url, row[S3Inventory::CSV_KEY_INDEX]), etag: row[S3Inventory::CSV_ETAG_INDEX], created_at: 2.days.ago)
+    end
+
+    upload = Upload.last
+    etag = upload.etag
+    post = Fabricate(:post, raw: "![](#{upload.url})")
+    post.link_post_uploads
+    upload.delete
+
+    inventory.expects(:download_inventory_files_to_tmp_directory)
+    inventory.expects(:decompress_inventory_files)
+    inventory.expects(:files).returns([{ key: "Key", filename: "#{csv_filename}.gz" }]).times(2)
+
+    output = capture_stdout do
+      inventory.backfill_etags_and_list_missing
+    end
+
+    expect(output).to eq("Listing missing post uploads...\n0 post uploads are missing.\n")
+    expect(post.uploads.first.etag).to eq(etag)
+  end
 end

spec/fixtures/csv/s3_inventory.csv

@@ -1,3 +1,3 @@
-"abc","original/0184537a4f419224404d013414e913a4f56018f2.jpg","defcaac0b4aca535c284e95f30d608d0"
-"abc","original/050afc0ab01debe8cf48fd2ce50fbbf5eb072815.jpg","0cdc623af39cde0adb382670a6dc702a"
-"abc","original/0789fbf5490babc68326b9cec90eeb0d6590db05.png","25c02eaceef4cb779fc17030d33f7f06"
+"abc","original/1X/0184537a4f419224404d013414e913a4f56018f2.jpg","defcaac0b4aca535c284e95f30d608d0"
+"abc","original/1X/050afc0ab01debe8cf48fd2ce50fbbf5eb072815.jpg","0cdc623af39cde0adb382670a6dc702a"
+"abc","original/1X/0789fbf5490babc68326b9cec90eeb0d6590db05.png","25c02eaceef4cb779fc17030d33f7f06"