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discourse/lib/tasks/uploads.rake

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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}'..."
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: 20.megabytes, 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: 20.megabytes, 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
require "file_store/s3_store"
require "file_store/local_store"
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
# make sure s3 is enabled
if !SiteSetting.Upload.enable_s3_uploads
puts "You must enable s3 uploads before running that task"
return
end
db = RailsMultisite::ConnectionManagement.current_db
puts "Migrating uploads to S3 (#{SiteSetting.Upload.s3_upload_bucket}) for '#{db}'..."
# will throw an exception if the bucket is missing
s3 = FileStore::S3Store.new
local = FileStore::LocalStore.new
# Migrate all uploads
Upload.where.not(sha1: nil)
.where("url NOT LIKE '#{s3.absolute_base_url}%'")
.find_each do |upload|
# remove invalid uploads
if upload.url.blank?
upload.destroy!
next
end
# store the old url
from = upload.url
# retrieve the path to the local file
path = local.path_for(upload)
# make sure the file exists locally
if !path || !File.exists?(path)
putc "X"
next
end
begin
file = File.open(path)
content_type = `file --mime-type -b #{path}`.strip
to = s3.store_upload(file, upload, content_type)
rescue
putc "X"
next
ensure
file&.close
end
# remap the URL
DbHelper.remap(UrlHelper.absolute(from), Discourse.store.cdn_url(to))
DbHelper.remap(UrlHelper.absolute_without_cdn(from), Discourse.store.cdn_url(to))
DbHelper.remap(from, to)
upload.optimized_images.destroy_all
putc "."
end
end
################################################################################
# clean_up #
################################################################################
task "uploads:clean_up" => :environment do
if ENV["RAILS_DB"]
clean_up_uploads
else
RailsMultisite::ConnectionManagement.each_connection { clean_up_uploads }
end
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)
if Discourse.store.external?
puts "This task only works for internal storages."
return
end
public_directory = "#{Rails.root}/public"
Upload.find_each do |upload|
# could be a remote image
next unless upload.url =~ /^\/[^\/]/
path = "#{public_directory}#{upload.url}"
bad = true
begin
bad = false if File.size(path) != 0
rescue
# something is messed up
end
puts path if bad
end
unless skip_optimized
OptimizedImage.find_each do |optimized_image|
# remote?
next unless optimized_image.url =~ /^\/[^\/]/
path = "#{public_directory}#{optimized_image.url}"
bad = true
begin
bad = false if File.size(path) != 0
rescue
# something is messed up
end
puts path if bad
end
end
end
################################################################################
# Recover from tombstone #
################################################################################
task "uploads:recover_from_tombstone" => :environment do
if ENV["RAILS_DB"]
recover_from_tombstone
else
RailsMultisite::ConnectionManagement.each_connection { recover_from_tombstone }
end
end
def recover_from_tombstone
if Discourse.store.external?
puts "This task only works for internal storages."
return
end
begin
previous_image_size = SiteSetting.max_image_size_kb
previous_attachment_size = SiteSetting.max_attachment_size_kb
previous_extensions = SiteSetting.authorized_extensions
SiteSetting.max_image_size_kb = 10 * 1024
SiteSetting.max_attachment_size_kb = 10 * 1024
SiteSetting.authorized_extensions = "*"
current_db = RailsMultisite::ConnectionManagement.current_db
public_path = Rails.root.join("public")
paths = Dir.glob(File.join(public_path, 'uploads', 'tombstone', current_db, '**', '*.*'))
max = paths.size
paths.each_with_index do |path, index|
filename = File.basename(path)
printf("%9d / %d (%5.1f%%)\n", (index + 1), max, (((index + 1).to_f / max.to_f) * 100).round(1))
Post.where("raw LIKE ?", "%#{filename}%").find_each do |post|
doc = Nokogiri::HTML::fragment(post.raw)
updated = false
image_urls = doc.css("img[src]").map { |img| img["src"] }
attachment_urls = doc.css("a.attachment[href]").map { |a| a["href"] }
(image_urls + attachment_urls).each do |url|
next if !url.start_with?("/uploads/")
next if Upload.exists?(url: url)
puts "Restoring #{path}..."
tombstone_path = File.join(public_path, 'uploads', 'tombstone', url.gsub(/^\/uploads\//, ""))
if File.exists?(tombstone_path)
File.open(tombstone_path) do |file|
new_upload = UploadCreator.new(file, File.basename(url)).create_for(Discourse::SYSTEM_USER_ID)
if new_upload.persisted?
puts "Restored into #{new_upload.url}"
DbHelper.remap(url, new_upload.url)
updated = true
else
puts "Failed to create upload for #{url}: #{new_upload.errors.full_messages}."
end
end
else
puts "Failed to find file (#{tombstone_path}) in tombstone."
end
end
post.rebake! if updated
end
sha1 = File.basename(filename, File.extname(filename))
short_url = "upload://#{Base62.encode(sha1.hex)}"
Post.where("raw LIKE ?", "%#{short_url}%").find_each do |post|
puts "Restoring #{path}..."
File.open(path) do |file|
new_upload = UploadCreator.new(file, filename).create_for(Discourse::SYSTEM_USER_ID)
if new_upload.persisted?
puts "Restored into #{new_upload.short_url}"
DbHelper.remap(short_url, new_upload.short_url) if short_url != new_upload.short_url
post.rebake!
else
puts "Failed to create upload for #{filename}: #{new_upload.errors.full_messages}."
end
end
end
end
ensure
SiteSetting.max_image_size_kb = previous_image_size
SiteSetting.max_attachment_size_kb = previous_attachment_size
SiteSetting.authorized_extensions = previous_extensions
end
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" => :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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