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discourse/lib/tasks/uploads.rake

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# frozen_string_literal: true
require "db_helper"
require "digest/sha1"
require "base62"
################################################################################
# gather #
################################################################################
task "uploads:gather" => :environment do
ENV["RAILS_DB"] ? gather_uploads : gather_uploads_for_all_sites
end
def gather_uploads_for_all_sites
RailsMultisite::ConnectionManagement.each_connection { gather_uploads }
end
def file_exists?(path)
File.exists?(path) && File.size(path) > 0
rescue
false
end
def gather_uploads
public_directory = "#{Rails.root}/public"
current_db = RailsMultisite::ConnectionManagement.current_db
puts "", "Gathering uploads for '#{current_db}'...", ""
Upload.where("url ~ '^\/uploads\/'")
.where("url !~ '^\/uploads\/#{current_db}'")
.find_each do |upload|
begin
old_db = upload.url[/^\/uploads\/([^\/]+)\//, 1]
from = upload.url.dup
to = upload.url.sub("/uploads/#{old_db}/", "/uploads/#{current_db}/")
source = "#{public_directory}#{from}"
destination = "#{public_directory}#{to}"
# create destination directory & copy file unless it already exists
unless file_exists?(destination)
`mkdir -p '#{File.dirname(destination)}'`
`cp --link '#{source}' '#{destination}'`
end
# ensure file has been succesfuly copied over
raise unless file_exists?(destination)
# remap links in db
DbHelper.remap(from, to)
rescue
putc "!"
else
putc "."
end
end
puts "", "Done!"
end
################################################################################
# backfill_shas #
################################################################################
task "uploads:backfill_shas" => :environment do
RailsMultisite::ConnectionManagement.each_connection do |db|
puts "Backfilling #{db}..."
Upload.where(sha1: nil).find_each do |u|
begin
path = Discourse.store.path_for(u)
u.sha1 = Upload.generate_digest(path)
u.save!
putc "."
rescue => e
puts "Skipping #{u.original_filename} (#{u.url}) #{e.message}"
end
end
end
puts "", "Done"
end
################################################################################
# migrate_from_s3 #
################################################################################
task "uploads:migrate_from_s3" => :environment do
ENV["RAILS_DB"] ? migrate_from_s3 : migrate_all_from_s3
end
def guess_filename(url, raw)
begin
uri = URI.parse("http:#{url}")
f = uri.open("rb", read_timeout: 5, redirect: true, allow_redirections: :all)
filename = if f.meta && f.meta["content-disposition"]
f.meta["content-disposition"][/filename="([^"]+)"/, 1].presence
end
filename ||= raw[/<a class="attachment" href="(?:https?:)?#{Regexp.escape(url)}">([^<]+)<\/a>/, 1].presence
filename ||= File.basename(url)
filename
rescue
nil
ensure
f.try(:close!) rescue nil
end
end
def migrate_all_from_s3
RailsMultisite::ConnectionManagement.each_connection { migrate_from_s3 }
end
def migrate_from_s3
require "file_store/s3_store"
# make sure S3 is disabled
if SiteSetting.Upload.enable_s3_uploads
puts "You must disable S3 uploads before running that task."
return
end
db = RailsMultisite::ConnectionManagement.current_db
puts "Migrating uploads from S3 to local storage for '#{db}'..."
max_file_size = [SiteSetting.max_image_size_kb, SiteSetting.max_attachment_size_kb].max.kilobytes
Post
.where("user_id > 0")
.where("raw LIKE '%.s3%.amazonaws.com/%' OR raw LIKE '%(upload://%'")
.find_each do |post|
begin
updated = false
post.raw.gsub!(/(\/\/[\w.-]+amazonaws\.com\/(original|optimized)\/([a-z0-9]+\/)+\h{40}([\w.-]+)?)/i) do |url|
begin
if filename = guess_filename(url, post.raw)
file = FileHelper.download("http:#{url}", max_file_size: max_file_size, tmp_file_name: "from_s3", follow_redirect: true)
sha1 = Upload.generate_digest(file)
origin = nil
existing_upload = Upload.find_by(sha1: sha1)
if existing_upload&.url&.start_with?("//")
filename = existing_upload.original_filename
origin = existing_upload.origin
existing_upload.destroy
end
new_upload = UploadCreator.new(file, filename, origin: origin).create_for(post.user_id || -1)
if new_upload&.save
updated = true
url = new_upload.url
end
end
url
rescue
url
end
end
post.raw.gsub!(/(upload:\/\/[0-9a-zA-Z]+\.\w+)/) do |url|
begin
if sha1 = Upload.sha1_from_short_url(url)
if upload = Upload.find_by(sha1: sha1)
if upload.url.start_with?("//")
file = FileHelper.download("http:#{upload.url}", max_file_size: max_file_size, tmp_file_name: "from_s3", follow_redirect: true)
filename = upload.original_filename
origin = upload.origin
upload.destroy
new_upload = UploadCreator.new(file, filename, origin: origin).create_for(post.user_id || -1)
if new_upload&.save
updated = true
url = new_upload.url
end
end
end
end
url
rescue
url
end
end
if updated
post.save!
post.rebake!
putc "#"
else
putc "."
end
rescue
putc "X"
end
end
puts "Done!"
end
################################################################################
# migrate_to_s3 #
################################################################################
task "uploads:migrate_to_s3" => :environment do
ENV["RAILS_DB"] ? migrate_to_s3 : migrate_to_s3_all_sites
end
def migrate_to_s3_all_sites
RailsMultisite::ConnectionManagement.each_connection { migrate_to_s3 }
end
def migrate_to_s3
db = RailsMultisite::ConnectionManagement.current_db
dry_run = !!ENV["DRY_RUN"]
puts "*" * 30 + " DRY RUN " + "*" * 30 if dry_run
puts "Migrating uploads to S3 for '#{db}'..."
if Upload.by_users.where("url NOT LIKE '//%' AND url NOT LIKE '/uploads/#{db}/original/_X/%'").exists?
puts <<~TEXT
Some uploads were not migrated to the new scheme. Please run these commands in the rails console
SiteSetting.migrate_to_new_scheme = true
Jobs::MigrateUploadScheme.new.execute(nil)
TEXT
exit 1
end
unless ENV["DISCOURSE_S3_SECRET_ACCESS_KEY"].present? &&
ENV["DISCOURSE_S3_REGION"].present? &&
ENV["DISCOURSE_S3_ACCESS_KEY_ID"].present? &&
ENV["DISCOURSE_S3_SECRET_ACCESS_KEY"].present?
puts <<~TEXT
Please provide the following environment variables
- DISCOURSE_S3_BUCKET
- DISCOURSE_S3_REGION
- DISCOURSE_S3_ACCESS_KEY_ID
- DISCOURSE_S3_SECRET_ACCESS_KEY
TEXT
exit 2
end
if SiteSetting.Upload.s3_cdn_url.blank?
puts "Please provide the 'DISCOURSE_S3_CDN_URL' environment variable"
exit 3
end
bucket_has_folder_path = true if ENV["DISCOURSE_S3_BUCKET"].include? "/"
opts = {
region: ENV["DISCOURSE_S3_REGION"],
access_key_id: ENV["DISCOURSE_S3_ACCESS_KEY_ID"],
secret_access_key: ENV["DISCOURSE_S3_SECRET_ACCESS_KEY"]
}
# S3::Client ignores the `region` option when an `endpoint` is provided.
# Without `region`, non-default region bucket creation will break for S3, so we can only
# define endpoint when not using S3 i.e. when SiteSetting.s3_endpoint is provided.
opts[:endpoint] = SiteSetting.s3_endpoint if SiteSetting.s3_endpoint.present?
s3 = Aws::S3::Client.new(opts)
if bucket_has_folder_path
bucket, folder = S3Helper.get_bucket_and_folder_path(ENV["DISCOURSE_S3_BUCKET"])
folder = File.join(folder, "/")
else
bucket, folder = ENV["DISCOURSE_S3_BUCKET"], ""
end
puts "Uploading files to S3..."
print " - Listing local files"
local_files = []
IO.popen("cd public && find uploads/#{db}/original -type f").each do |file|
local_files << file.chomp
putc "." if local_files.size % 1000 == 0
end
puts " => #{local_files.size} files"
print " - Listing S3 files"
s3_objects = []
prefix = ENV["MIGRATE_TO_MULTISITE"] ? "uploads/#{db}/original/" : "original/"
options = { bucket: bucket, prefix: folder + prefix }
loop do
response = s3.list_objects_v2(options)
s3_objects.concat(response.contents)
putc "."
break if response.next_continuation_token.blank?
options[:continuation_token] = response.next_continuation_token
end
puts " => #{s3_objects.size} files"
puts " - Syncing files to S3"
synced = 0
failed = []
local_files.each do |file|
path = File.join("public", file)
name = File.basename(path)
etag = Digest::MD5.file(path).hexdigest
key = file[file.index(prefix)..-1]
key.prepend(folder) if bucket_has_folder_path
if s3_object = s3_objects.find { |obj| file.ends_with?(obj.key) }
next if File.size(path) == s3_object.size && s3_object.etag[etag]
end
options = {
acl: "public-read",
body: File.open(path, "rb"),
bucket: bucket,
content_type: MiniMime.lookup_by_filename(name)&.content_type,
key: key,
}
if !FileHelper.is_supported_image?(name)
upload = Upload.find_by(url: "/#{file}")
if upload&.original_filename
options[:content_disposition] =
%Q{attachment; filename="#{upload.original_filename}"}
end
end
if dry_run
puts "#{file} => #{options[:key]}"
synced += 1
elsif s3.put_object(options).etag[etag]
putc "."
synced += 1
else
putc "X"
failed << path
end
end
puts
if failed.size > 0
puts "Failed to upload #{failed.size} files"
puts failed.join("\n")
elsif s3_objects.size + synced >= local_files.size
puts "Updating the URLs in the database..."
from = "/uploads/#{db}/original/"
to = "#{SiteSetting.Upload.s3_base_url}/#{prefix}"
if dry_run
puts "REPLACING '#{from}' WITH '#{to}'"
else
DbHelper.remap(from, to, anchor_left: true)
end
[
[
"src=\"/uploads/#{db}/original/(\\dX/(?:[a-f0-9]/)*[a-f0-9]{40}[a-z0-9\\.]*)",
"src=\"#{SiteSetting.Upload.s3_base_url}/#{prefix}\\1"
],
[
"src='/uploads/#{db}/original/(\\dX/(?:[a-f0-9]/)*[a-f0-9]{40}[a-z0-9\\.]*)",
"src='#{SiteSetting.Upload.s3_base_url}/#{prefix}\\1"
],
[
"\\[img\\]/uploads/#{db}/original/(\\dX/(?:[a-f0-9]/)*[a-f0-9]{40}[a-z0-9\\.]*)\\[/img\\]",
"[img]#{SiteSetting.Upload.s3_base_url}/#{prefix}\\1[/img]"
]
].each do |from_url, to_url|
if dry_run
puts "REPLACING '#{from_url}' WITH '#{to_url}'"
else
DbHelper.regexp_replace(from_url, to_url)
end
end
unless dry_run
# Legacy inline image format
Post.where("raw LIKE '%![](/uploads/default/original/%)%'").each do |post|
regexp = /!\[\](\/uploads\/#{db}\/original\/(\dX\/(?:[a-f0-9]\/)*[a-f0-9]{40}[a-z0-9\.]*))/
post.raw.scan(regexp).each do |upload_url, _|
upload = Upload.get_from_url(upload_url)
post.raw = post.raw.gsub("![](#{upload_url})", "![](#{upload.short_url})")
end
post.save!(validate: false)
end
end
if Discourse.asset_host.present?
# Uploads that were on local CDN will now be on S3 CDN
from = "#{Discourse.asset_host}/uploads/#{db}/original/"
to = "#{SiteSetting.Upload.s3_cdn_url}/#{prefix}"
if dry_run
puts "REMAPPING '#{from}' TO '#{to}'"
else
DbHelper.remap(from, to)
end
end
# Uploads that were on base hostname will now be on S3 CDN
from = "#{Discourse.base_url}/uploads/#{db}/original/"
to = "#{SiteSetting.Upload.s3_cdn_url}/#{prefix}"
if dry_run
puts "REMAPPING '#{from}' TO '#{to}'"
else
DbHelper.remap(from, to)
end
unless dry_run
puts "Removing old optimized images..."
OptimizedImage
.joins("LEFT JOIN uploads u ON optimized_images.upload_id = u.id")
.where("u.id IS NOT NULL AND u.url LIKE '//%' AND optimized_images.url NOT LIKE '//%'")
.delete_all
puts "Rebaking posts with lightboxes..."
Post.where("cooked LIKE '%class=\"lightbox\"%'").find_each do |post|
post.rebake!(priority: :ultra_low)
end
end
end
puts "Done!"
end
################################################################################
# clean_up #
################################################################################
task "uploads:clean_up" => :environment do
ENV["RAILS_DB"] ? clean_up_uploads : clean_up_uploads_all_sites
end
def clean_up_uploads_all_sites
RailsMultisite::ConnectionManagement.each_connection { clean_up_uploads }
end
def clean_up_uploads
db = RailsMultisite::ConnectionManagement.current_db
puts "Cleaning up uploads and thumbnails for '#{db}'..."
if Discourse.store.external?
puts "This task only works for internal storages."
exit 1
end
puts <<~OUTPUT
This task will remove upload records and files permanently.
Would you like to take a full backup before the clean up? (Y/N)
OUTPUT
if STDIN.gets.chomp.downcase == 'y'
puts "Starting backup..."
backuper = BackupRestore::Backuper.new(Discourse.system_user.id)
backuper.run
exit 1 unless backuper.success
end
public_directory = Rails.root.join("public").to_s
##
## DATABASE vs FILE SYSTEM
##
# uploads & avatars
Upload.find_each do |upload|
path = File.join(public_directory, upload.url)
if !File.exists?(path)
upload.destroy!
putc "#"
else
putc "."
end
end
# optimized images
OptimizedImage.find_each do |optimized_image|
path = File.join(public_directory, optimized_image.url)
if !File.exists?(path)
optimized_image.destroy!
putc "#"
else
putc "."
end
end
##
## FILE SYSTEM vs DATABASE
##
uploads_directory = File.join(public_directory, 'uploads', db).to_s
# avatars (no avatar should be stored in that old directory)
FileUtils.rm_rf("#{uploads_directory}/avatars")
# uploads and optimized images
Dir.glob("#{uploads_directory}/**/*.*").each do |file_path|
sha1 = Upload.generate_digest(file_path)
url = file_path.split(public_directory, 2)[1]
if (Upload.where(sha1: sha1).empty? &&
Upload.where(url: url).empty?) &&
(OptimizedImage.where(sha1: sha1).empty? &&
OptimizedImage.where(url: url).empty?)
FileUtils.rm(file_path)
putc "#"
else
putc "."
end
end
puts "Removing empty directories..."
puts `find #{uploads_directory} -type d -empty -exec rmdir {} \\;`
puts "Done!"
end
################################################################################
# missing #
################################################################################
# list all missing uploads and optimized images
task "uploads:missing" => :environment do
if ENV["RAILS_DB"]
list_missing_uploads(skip_optimized: ENV['SKIP_OPTIMIZED'])
else
RailsMultisite::ConnectionManagement.each_connection do |db|
list_missing_uploads(skip_optimized: ENV['SKIP_OPTIMIZED'])
end
end
end
def list_missing_uploads(skip_optimized: false)
Discourse.store.list_missing_uploads(skip_optimized: skip_optimized)
end
################################################################################
# regenerate_missing_optimized #
################################################################################
# regenerate missing optimized images
task "uploads:regenerate_missing_optimized" => :environment do
if ENV["RAILS_DB"]
regenerate_missing_optimized
else
RailsMultisite::ConnectionManagement.each_connection { regenerate_missing_optimized }
end
end
def regenerate_missing_optimized
db = RailsMultisite::ConnectionManagement.current_db
puts "Regenerating missing optimized images for '#{db}'..."
if Discourse.store.external?
puts "This task only works for internal storages."
return
end
public_directory = "#{Rails.root}/public"
missing_uploads = Set.new
avatar_upload_ids = UserAvatar.all.pluck(:custom_upload_id, :gravatar_upload_id).flatten.compact
default_scope = OptimizedImage.includes(:upload)
[
default_scope
.where("optimized_images.upload_id IN (?)", avatar_upload_ids),
default_scope
.where("optimized_images.upload_id NOT IN (?)", avatar_upload_ids)
.where("LENGTH(COALESCE(url, '')) > 0")
.where("width > 0 AND height > 0")
].each do |scope|
scope.find_each do |optimized_image|
upload = optimized_image.upload
next unless optimized_image.url =~ /^\/[^\/]/
next unless upload.url =~ /^\/[^\/]/
thumbnail = "#{public_directory}#{optimized_image.url}"
original = "#{public_directory}#{upload.url}"
if !File.exists?(thumbnail) || File.size(thumbnail) <= 0
# make sure the original image exists locally
if (!File.exists?(original) || File.size(original) <= 0) && upload.origin.present?
# try to fix it by redownloading it
begin
downloaded = FileHelper.download(
upload.origin,
max_file_size: SiteSetting.max_image_size_kb.kilobytes,
tmp_file_name: "discourse-missing",
follow_redirect: true
) rescue nil
if downloaded && downloaded.size > 0
FileUtils.mkdir_p(File.dirname(original))
File.open(original, "wb") { |f| f.write(downloaded.read) }
end
ensure
downloaded.try(:close!) if downloaded.respond_to?(:close!)
end
end
if File.exists?(original) && File.size(original) > 0
FileUtils.mkdir_p(File.dirname(thumbnail))
OptimizedImage.resize(original, thumbnail, optimized_image.width, optimized_image.height)
putc "#"
else
missing_uploads << original
putc "X"
end
else
putc "."
end
end
end
puts "", "Done"
if missing_uploads.size > 0
puts "Missing uploads:"
missing_uploads.sort.each { |u| puts u }
end
end
################################################################################
# migrate_to_new_scheme #
################################################################################
task "uploads:start_migration" => :environment do
SiteSetting.migrate_to_new_scheme = true
puts "Migration started!"
end
task "uploads:stop_migration" => :environment do
SiteSetting.migrate_to_new_scheme = false
puts "Migration stoped!"
end
task "uploads:analyze", [:cache_path, :limit] => :environment do |_, args|
now = Time.zone.now
current_db = RailsMultisite::ConnectionManagement.current_db
puts "Analyzing uploads for '#{current_db}'... This may take awhile...\n"
cache_path = args[:cache_path]
current_db = RailsMultisite::ConnectionManagement.current_db
uploads_path = Rails.root.join('public', 'uploads', current_db)
path =
if cache_path
cache_path
else
path = "/tmp/#{current_db}-#{now.to_i}-paths.txt"
FileUtils.touch("/tmp/#{now.to_i}-paths.txt")
`find #{uploads_path} -type f -printf '%s %h/%f\n' > #{path}`
path
end
extensions = {}
paths_count = 0
File.readlines(path).each do |line|
size, file_path = line.split(" ", 2)
paths_count += 1
extension = File.extname(file_path).chomp.downcase
extensions[extension] ||= {}
extensions[extension]["count"] ||= 0
extensions[extension]["count"] += 1
extensions[extension]["size"] ||= 0
extensions[extension]["size"] += size.to_i
end
uploads_count = Upload.count
optimized_images_count = OptimizedImage.count
puts <<~REPORT
Report for '#{current_db}'
-----------#{'-' * current_db.length}
Number of `Upload` records in DB: #{uploads_count}
Number of `OptimizedImage` records in DB: #{optimized_images_count}
**Total DB records: #{uploads_count + optimized_images_count}**
Number of images in uploads folder: #{paths_count}
------------------------------------#{'-' * paths_count.to_s.length}
REPORT
helper = Class.new do
include ActionView::Helpers::NumberHelper
end
helper = helper.new
printf "%-15s | %-15s | %-15s\n", 'extname', 'total size', 'count'
puts "-" * 45
extensions.sort_by { |_, value| value['size'] }.reverse.each do |extname, value|
printf "%-15s | %-15s | %-15s\n", extname, helper.number_to_human_size(value['size']), value['count']
end
puts "\n"
limit = args[:limit] || 10
sql = <<~SQL
SELECT
users.username,
COUNT(uploads.user_id) AS num_of_uploads,
SUM(uploads.filesize) AS total_size_of_uploads,
COUNT(optimized_images.id) AS num_of_optimized_images
FROM users
INNER JOIN uploads ON users.id = uploads.user_id
INNER JOIN optimized_images ON uploads.id = optimized_images.upload_id
GROUP BY users.id
ORDER BY total_size_of_uploads DESC
LIMIT #{limit}
SQL
puts "Users using the most disk space"
puts "-------------------------------\n"
printf "%-25s | %-25s | %-25s | %-25s\n", 'username', 'total size of uploads', 'number of uploads', 'number of optimized images'
puts "-" * 110
DB.query_single(sql).each do |username, num_of_uploads, total_size_of_uploads, num_of_optimized_images|
printf "%-25s | %-25s | %-25s | %-25s\n", username, helper.number_to_human_size(total_size_of_uploads), num_of_uploads, num_of_optimized_images
end
puts "\n"
puts "List of file paths @ #{path}"
puts "Duration: #{Time.zone.now - now} seconds"
end
task "uploads:fix_incorrect_extensions" => :environment do
require_dependency "upload_fixer"
UploadFixer.fix_all_extensions
end
task "uploads:recover_from_tombstone" => :environment do
Rake::Task["uploads:recover"].invoke
end
task "uploads:recover" => :environment do
require_dependency "upload_recovery"
dry_run = ENV["DRY_RUN"].present?
if ENV["RAILS_DB"]
UploadRecovery.new(dry_run: dry_run).recover
else
RailsMultisite::ConnectionManagement.each_connection do |db|
UploadRecovery.new(dry_run: dry_run).recover
end
end
end
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