338 lines
10 KiB
Ruby
338 lines
10 KiB
Ruby
# frozen_string_literal: true
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require "aws-sdk-s3"
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require "csv"
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class S3Inventory
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attr_reader :type, :model, :inventory_date
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CSV_KEY_INDEX ||= 1
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CSV_ETAG_INDEX ||= 2
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INVENTORY_PREFIX ||= "inventory"
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INVENTORY_VERSION ||= "1"
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def initialize(s3_helper, type, preloaded_inventory_file: nil, preloaded_inventory_date: nil)
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@s3_helper = s3_helper
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if preloaded_inventory_file && preloaded_inventory_date
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# Data preloaded, so we don't need to fetch it again
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@preloaded_inventory_file = preloaded_inventory_file
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@inventory_date = preloaded_inventory_date
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end
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if type == :upload
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@type = "original"
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@model = Upload
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elsif type == :optimized
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@type = "optimized"
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@model = OptimizedImage
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end
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end
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def backfill_etags_and_list_missing
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if !@preloaded_inventory_file && files.blank?
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error("Failed to list inventory from S3")
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return
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end
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DistributedMutex.synchronize("s3_inventory_list_missing_#{type}", validity: 30.minutes) do
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begin
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download_and_decompress_files if !@preloaded_inventory_file
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multisite_prefix = Discourse.store.upload_path
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ActiveRecord::Base.transaction do
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begin
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connection.exec("CREATE TEMP TABLE #{table_name}(url text UNIQUE, etag text, PRIMARY KEY(etag, url))")
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connection.copy_data("COPY #{table_name} FROM STDIN CSV") do
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for_each_inventory_row do |row|
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key = row[CSV_KEY_INDEX]
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next if Rails.configuration.multisite && key.exclude?(multisite_prefix)
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url = File.join(Discourse.store.absolute_base_url, key)
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connection.put_copy_data("#{url},#{row[CSV_ETAG_INDEX]}\n")
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end
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end
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# backfilling etags
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connection.async_exec("UPDATE #{model.table_name}
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SET etag = #{table_name}.etag
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FROM #{table_name}
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WHERE #{model.table_name}.etag IS NULL AND
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#{model.table_name}.url = #{table_name}.url")
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uploads = model.where("updated_at < ?", inventory_date)
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uploads = uploads.by_users if model == Upload
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missing_uploads = uploads
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.joins("LEFT JOIN #{table_name} ON #{table_name}.etag = #{model.table_name}.etag")
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.where("#{table_name}.etag IS NULL")
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exists_with_different_etag = missing_uploads
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.joins("LEFT JOIN #{table_name} inventory2 ON inventory2.url = #{model.table_name}.url")
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.where("inventory2.etag IS NOT NULL").pluck(:id)
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if model == Upload
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# marking as verified/not verified
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DB.exec(<<~SQL, inventory_date
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UPDATE #{model.table_name}
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SET verified = CASE when table_name_alias.etag IS NULL THEN false ELSE true END
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FROM #{model.table_name} AS model_table
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LEFT JOIN #{table_name} AS table_name_alias ON model_table.etag = table_name_alias.etag
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WHERE model_table.id = #{model.table_name}.id
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AND model_table.updated_at < ?
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AND (
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model_table.verified IS NULL OR
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model_table.verified <> CASE when table_name_alias.etag IS NULL THEN false ELSE true END
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)
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AND model_table.id > #{model::SEEDED_ID_THRESHOLD}
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SQL
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)
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end
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if (missing_count = missing_uploads.count) > 0
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missing_uploads.select(:id, :url).find_each do |upload|
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if exists_with_different_etag.include?(upload.id)
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log "#{upload.url} has different etag"
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else
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log upload.url
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end
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end
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log "#{missing_count} of #{uploads.count} #{model.name.underscore.pluralize} are missing"
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if exists_with_different_etag.present?
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log "#{exists_with_different_etag.count} of these are caused by differing etags"
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log "Null the etag column and re-run for automatic backfill"
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end
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end
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Discourse.stats.set("missing_s3_#{model.table_name}", missing_count)
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ensure
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connection.exec("DROP TABLE #{table_name}") unless connection.nil?
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end
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end
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ensure
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cleanup!
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end
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end
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end
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def for_each_inventory_row
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if @preloaded_inventory_file
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CSV.foreach(@preloaded_inventory_file) { |row| yield(row) }
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else
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files.each do |file|
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CSV.foreach(file[:filename][0...-3]) { |row| yield(row) }
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end
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end
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end
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def download_inventory_file_to_tmp_directory(file)
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return if File.exists?(file[:filename])
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log "Downloading inventory file '#{file[:key]}' to tmp directory..."
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failure_message = "Failed to inventory file '#{file[:key]}' to tmp directory."
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@s3_helper.download_file(file[:key], file[:filename], failure_message)
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end
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def decompress_inventory_file(file)
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log "Decompressing inventory file '#{file[:filename]}', this may take a while..."
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Discourse::Utils.execute_command('gzip', '--decompress', file[:filename], failure_message: "Failed to decompress inventory file '#{file[:filename]}'.", chdir: tmp_directory)
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end
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def update_bucket_policy
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@s3_helper.s3_client.put_bucket_policy(
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bucket: bucket_name,
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policy: {
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"Version": "2012-10-17",
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"Statement": [
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{
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"Sid": "InventoryAndAnalyticsPolicy",
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"Effect": "Allow",
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"Principal": { "Service": "s3.amazonaws.com" },
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"Action": ["s3:PutObject"],
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"Resource": ["#{inventory_path_arn}/*"],
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"Condition": {
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"ArnLike": {
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"aws:SourceArn": bucket_arn
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},
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"StringEquals": {
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"s3:x-amz-acl": "bucket-owner-full-control"
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}
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}
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}
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]
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}.to_json
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)
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end
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def update_bucket_inventory_configuration
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@s3_helper.s3_client.put_bucket_inventory_configuration(
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bucket: bucket_name,
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id: inventory_id,
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inventory_configuration: inventory_configuration,
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use_accelerate_endpoint: false
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)
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end
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def prepare_for_all_sites
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db_names = RailsMultisite::ConnectionManagement.all_dbs
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db_files = {}
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db_names.each do |db|
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db_files[db] = Tempfile.new("#{db}-inventory.csv")
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end
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download_and_decompress_files
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for_each_inventory_row do |row|
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key = row[CSV_KEY_INDEX]
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row_db = key.match(/uploads\/([^\/]+)\//)&.[](1)
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if row_db && file = db_files[row_db]
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file.write(row.to_csv)
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end
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end
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db_names.each do |db|
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db_files[db].rewind
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end
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db_files
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ensure
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cleanup!
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end
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private
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def cleanup!
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return if @preloaded_inventory_file
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files.each do |file|
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File.delete(file[:filename]) if File.exists?(file[:filename])
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File.delete(file[:filename][0...-3]) if File.exists?(file[:filename][0...-3])
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end
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end
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def connection
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@connection ||= ActiveRecord::Base.connection.raw_connection
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end
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def table_name
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"#{type}_inventory"
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end
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def files
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return if @preloaded_inventory_file
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@files ||= begin
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symlink_file = unsorted_files.sort_by { |file| -file.last_modified.to_i }.first
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return [] if symlink_file.blank?
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@inventory_date = symlink_file.last_modified - 1.day
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log "Downloading symlink file to tmp directory..."
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failure_message = "Failed to download symlink file to tmp directory."
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filename = File.join(tmp_directory, File.basename(symlink_file.key))
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@s3_helper.download_file(symlink_file.key, filename, failure_message)
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File.readlines(filename).map do |key|
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key = key.sub("s3://#{bucket_name}/", "").sub("\n", "")
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{ key: key, filename: File.join(tmp_directory, File.basename(key)) }
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end
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end
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end
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def download_and_decompress_files
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files.each do |file|
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next if File.exists?(file[:filename][0...-3])
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download_inventory_file_to_tmp_directory(file)
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decompress_inventory_file(file)
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end
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end
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def tmp_directory
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@tmp_directory ||= begin
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current_db = RailsMultisite::ConnectionManagement.current_db
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directory = File.join(Rails.root, "tmp", INVENTORY_PREFIX, current_db)
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FileUtils.mkdir_p(directory)
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directory
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end
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end
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def inventory_configuration
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filter_prefix = type
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filter_prefix = File.join(bucket_folder_path, filter_prefix) if bucket_folder_path.present?
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{
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destination: {
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s3_bucket_destination: {
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bucket: bucket_arn,
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prefix: inventory_path,
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format: "CSV"
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}
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},
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filter: {
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prefix: filter_prefix
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},
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is_enabled: SiteSetting.enable_s3_inventory,
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id: inventory_id,
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included_object_versions: "Current",
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optional_fields: ["ETag"],
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schedule: {
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frequency: "Daily"
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}
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}
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end
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def bucket_name
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@s3_helper.s3_bucket_name
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end
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def bucket_folder_path
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@s3_helper.s3_bucket_folder_path
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end
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def unsorted_files
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objects = []
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hive_path = File.join(inventory_path, bucket_name, inventory_id, "hive")
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@s3_helper.list(hive_path).each do |obj|
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if obj.key.match?(/symlink\.txt$/i)
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objects << obj
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end
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end
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objects
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rescue Aws::Errors::ServiceError => e
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log("Failed to list inventory from S3", e)
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[]
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end
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def inventory_id
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@inventory_id ||= begin
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id = Rails.configuration.multisite ? "original" : type # TODO: rename multisite path to "uploads"
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bucket_folder_path.present? ? "#{bucket_folder_path}-#{id}" : id
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end
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end
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def inventory_path_arn
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File.join(bucket_arn, inventory_path)
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end
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def inventory_path
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path = File.join(INVENTORY_PREFIX, INVENTORY_VERSION)
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path = File.join(bucket_folder_path, path) if bucket_folder_path.present?
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path
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end
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def bucket_arn
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"arn:aws:s3:::#{bucket_name}"
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end
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def log(message, ex = nil)
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puts(message)
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Rails.logger.error("#{ex}\n" + (ex.backtrace || []).join("\n")) if ex
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end
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def error(message)
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log(message, StandardError.new(message))
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end
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end
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