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PERF: stream CSV exports so they don't fail when they are too big

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This commit is contained in:
Régis Hanol 2016-05-25 22:20:35 +02:00
parent a4cd068481
commit 86d50d0017
2 changed files with 105 additions and 116 deletions
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206
app/jobs/regular/export_csv_file.rb
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@ -6,56 +6,76 @@ module Jobs
class ExportCsvFile < Jobs::Base
include ActionView::Helpers::NumberHelper
HEADER_ATTRS_FOR = {}
HEADER_ATTRS_FOR['user_archive'] = ['topic_title','category','sub_category','is_pm','post','like_count','reply_count','url','created_at']
HEADER_ATTRS_FOR['user_list'] = ['id','name','username','email','title','created_at','last_seen_at','last_posted_at','last_emailed_at','trust_level','approved','suspended_at','suspended_till','blocked','active','admin','moderator','ip_address']
HEADER_ATTRS_FOR['user_stats'] = ['topics_entered','posts_read_count','time_read','topic_count','post_count','likes_given','likes_received']
HEADER_ATTRS_FOR['user_sso'] = ['external_id','external_email', 'external_username', 'external_name', 'external_avatar_url']
HEADER_ATTRS_FOR['staff_action'] = ['staff_user','action','subject','created_at','details', 'context']
HEADER_ATTRS_FOR['screened_email'] = ['email','action','match_count','last_match_at','created_at','ip_address']
HEADER_ATTRS_FOR['screened_ip'] = ['ip_address','action','match_count','last_match_at','created_at']
HEADER_ATTRS_FOR['screened_url'] = ['domain','action','match_count','last_match_at','created_at']
HEADER_ATTRS_FOR['report'] = ['date', 'value']
sidekiq_options retry: false
attr_accessor :current_user
HEADER_ATTRS_FOR ||= HashWithIndifferentAccess.new({
user_archive: ['topic_title','category','sub_category','is_pm','post','like_count','reply_count','url','created_at'],
user_list: ['id','name','username','email','title','created_at','last_seen_at','last_posted_at','last_emailed_at','trust_level','approved','suspended_at','suspended_till','blocked','active','admin','moderator','ip_address'],
user_stats: ['topics_entered','posts_read_count','time_read','topic_count','post_count','likes_given','likes_received'],
user_sso: ['external_id','external_email', 'external_username', 'external_name', 'external_avatar_url'],
staff_action: ['staff_user','action','subject','created_at','details', 'context'],
screened_email: ['email','action','match_count','last_match_at','created_at','ip_address'],
screened_ip: ['ip_address','action','match_count','last_match_at','created_at'],
screened_url: ['domain','action','match_count','last_match_at','created_at'],
report: ['date', 'value'],
})
def execute(args)
@entity = args[:entity]
@extra = HashWithIndifferentAccess.new(args[:args]) if args[:args]
@file_name = @entity
@current_user = User.find_by(id: args[:user_id])
export_method = "#{@entity}_export".to_sym
data =
if respond_to?(export_method)
send(export_method)
else
raise Discourse::InvalidParameters.new(:entity)
end
export_method = :"#{@entity}_export"
raise Discourse::InvalidParameters.new(:entity) unless respond_to?(export_method)
if data && data.length > 0
set_file_path
write_csv_file(data)
file_name_prefix = if @entity == "user_archive"
"#{@entity.split('_').join('-')}-#{@current_user.username}-#{Time.now.strftime("%y%m%d-%H%M%S")}"
else
"#{@entity.split('_').join('-')}-#{Time.now.strftime("%y%m%d-%H%M%S")}"
end
file = UserExport.create(file_name: file_name_prefix, user_id: @current_user.id)
file_name = "#{file_name_prefix}-#{file.id}.csv"
absolute_path = "#{UserExport.base_directory}/#{file_name}"
# ensure directory exists
FileUtils.mkdir_p(UserExport.base_directory) unless Dir.exists?(UserExport.base_directory)
# write to CSV file
CSV.open(absolute_path, "w") do |csv|
csv << get_header
send(export_method).each { |d| csv << d }
end
# compress CSV file
`gzip -5 #{absolute_path}`
ensure
notify_user
notify_user(file_name, absolute_path)
end
def user_archive_export
user_archive_data = Post.includes(:topic => :category).where(user_id: @current_user.id).select(:topic_id, :post_number, :raw, :like_count, :reply_count, :created_at).order(:created_at).with_deleted.to_a
user_archive_data.map do |user_archive|
get_user_archive_fields(user_archive)
return enum_for(:user_archive_export) unless block_given?
Post.includes(topic: :category)
.where(user_id: @current_user.id)
.select(:topic_id, :post_number, :raw, :like_count, :reply_count, :created_at)
.order(:created_at)
.with_deleted
.each do |user_archive|
yield get_user_archive_fields(user_archive)
end
end
def user_list_export
return enum_for(:user_list_export) unless block_given?
user_array = []
user_field_ids = UserField.pluck(:id)
condition = {}
if @extra && @extra[:trust_level] && trust_level = TrustLevel.levels[@extra[:trust_level].to_sym]
condition = {trust_level: trust_level}
condition = { trust_level: trust_level }
end
if SiteSetting.enable_sso
@ -65,8 +85,7 @@ module Jobs
user_info_string = add_single_sign_on(user, user_info_string)
user_info_string = add_custom_fields(user, user_info_string, user_field_ids)
user_info_string = add_group_names(user, user_info_string)
user_array.push(user_info_string.split(","))
user_info_string = nil
yield user_info_string.split(",")
end
else
# SSO disabled
@ -74,78 +93,78 @@ module Jobs
user_info_string = get_base_user_string(user)
user_info_string = add_custom_fields(user, user_info_string, user_field_ids)
user_info_string = add_group_names(user, user_info_string)
user_array.push(user_info_string.split(","))
user_info_string = nil
yield user_info_string.split(",")
end
end
user_field_ids = nil
user_array
end
def staff_action_export
if @current_user.admin?
staff_action_data = UserHistory.only_staff_actions.order('id DESC').to_a
return enum_for(:staff_action_export) unless block_given?
staff_action_data = if @current_user.admin?
UserHistory.only_staff_actions.order('id DESC')
else
# moderator
staff_action_data = UserHistory.where(admin_only: false).only_staff_actions.order('id DESC').to_a
UserHistory.where(admin_only: false).only_staff_actions.order('id DESC')
end
staff_action_data.map do |staff_action|
get_staff_action_fields(staff_action)
staff_action_data.each do |staff_action|
yield get_staff_action_fields(staff_action)
end
end
def screened_email_export
screened_email_data = ScreenedEmail.order('last_match_at desc').to_a
screened_email_data.map do |screened_email|
get_screened_email_fields(screened_email)
return enum_for(:screened_email_export) unless block_given?
ScreenedEmail.order('last_match_at DESC').each do |screened_email|
yield get_screened_email_fields(screened_email)
end
end
def screened_ip_export
screened_ip_data = ScreenedIpAddress.order('id desc').to_a
screened_ip_data.map do |screened_ip|
get_screened_ip_fields(screened_ip)
return enum_for(:screened_ip_export) unless block_given?
ScreenedIpAddress.order('id DESC').each do |screened_ip|
yield get_screened_ip_fields(screened_ip)
end
end
def screened_url_export
screened_url_data = ScreenedUrl.select("domain, sum(match_count) as match_count, max(last_match_at) as last_match_at, min(created_at) as created_at").group(:domain).order('last_match_at DESC').to_a
screened_url_data.map do |screened_url|
get_screened_url_fields(screened_url)
return enum_for(:screened_url_export) unless block_given?
ScreenedUrl.select("domain, sum(match_count) as match_count, max(last_match_at) as last_match_at, min(created_at) as created_at")
.group(:domain)
.order('last_match_at DESC')
.each do |screened_url|
yield get_screened_url_fields(screened_url)
end
end
def report_export
@extra[:start_date] = @extra[:start_date].to_date if @extra[:start_date].is_a?(String)
@extra[:end_date] = @extra[:end_date].to_date if @extra[:end_date].is_a?(String)
@extra[:category_id] = @extra[:category_id].to_i if @extra[:category_id]
@extra[:group_id] = @extra[:group_id].to_i if @extra[:group_id]
r = Report.find(@extra[:name], @extra)
r.data.map do |row|
[row[:x].to_s(:db), row[:y].to_s(:db)]
return enum_for(:report_export) unless block_given?
@extra[:start_date] = @extra[:start_date].to_date if @extra[:start_date].is_a?(String)
@extra[:end_date] = @extra[:end_date].to_date if @extra[:end_date].is_a?(String)
@extra[:category_id] = @extra[:category_id].to_i if @extra[:category_id]
@extra[:group_id] = @extra[:group_id].to_i if @extra[:group_id]
Report.find(@extra[:name], @extra).data.each do |row|
yield [row[:x].to_s(:db), row[:y].to_s(:db)]
end
end
def get_header
case @entity
when 'user_list'
header_array = HEADER_ATTRS_FOR['user_list'] + HEADER_ATTRS_FOR['user_stats']
if SiteSetting.enable_sso
header_array.concat(HEADER_ATTRS_FOR['user_sso'])
if @entity == 'user_list'
header_array = HEADER_ATTRS_FOR['user_list'] + HEADER_ATTRS_FOR['user_stats']
header_array.concat(HEADER_ATTRS_FOR['user_sso']) if SiteSetting.enable_sso
user_custom_fields = UserField.all
if user_custom_fields.present?
user_custom_fields.each do |custom_field|
header_array.push("#{custom_field.name} (custom user field)")
end
user_custom_fields = UserField.all
if user_custom_fields.present?
user_custom_fields.each do |custom_field|
header_array.push("#{custom_field.name} (custom user field)")
end
end
header_array.push("group_names")
else
header_array = HEADER_ATTRS_FOR[@entity]
end
header_array.push("group_names")
else
header_array = HEADER_ATTRS_FOR[@entity]
end
header_array
end
@ -227,7 +246,7 @@ module Jobs
user.username if !user.nil?
elsif attr == 'subject'
user = User.find_by(id: staff_action.attributes['target_user_id'])
user.nil? ? staff_action.attributes[attr] : "#{user.username} #{staff_action.attributes[attr]}"
user.nil? ? staff_action.attributes[attr] : "#{user.username} #{staff_action.attributes[attr]}"
else
staff_action.attributes[attr]
end
@ -289,43 +308,20 @@ module Jobs
screened_url_array
end
def set_file_path
if @entity == "user_archive"
file_name_prefix = "#{@file_name.split('_').join('-')}-#{current_user.username}-#{Time.now.strftime("%y%m%d-%H%M%S")}"
else
file_name_prefix = "#{@file_name.split('_').join('-')}-#{Time.now.strftime("%y%m%d-%H%M%S")}"
end
@file = UserExport.create(file_name: file_name_prefix, user_id: @current_user.id)
@file_name = "#{file_name_prefix}-#{@file.id}.csv"
# ensure directory exists
dir = File.dirname("#{UserExport.base_directory}/#{@file_name}")
FileUtils.mkdir_p(dir) unless Dir.exists?(dir)
end
def write_csv_file(data)
# write to CSV file
CSV.open(File.expand_path("#{UserExport.base_directory}/#{@file_name}", __FILE__), "w") do |csv|
csv << get_header
data.each do |value|
csv << value
end
end
# compress CSV file
`gzip -5 #{File.expand_path("#{UserExport.base_directory}/#{@file_name}", __FILE__)}`
end
def notify_user
def notify_user(file_name, absolute_path)
if @current_user
if @file_name != "" && File.exists?("#{UserExport.base_directory}/#{@file_name}.gz")
SystemMessage.create_from_system_user(@current_user, :csv_export_succeeded, download_link: "#{Discourse.base_uri}/export_csv/#{@file_name}.gz", file_name: "#{@file_name}.gz", file_size: number_to_human_size(File.size("#{UserExport.base_directory}/#{@file_name}.gz")))
if file_name.present? && File.exists?("#{absolute_path}.gz")
SystemMessage.create_from_system_user(
@current_user,
:csv_export_succeeded,
download_link: "#{Discourse.base_uri}/export_csv/#{file_name}.gz",
file_name: "#{file_name}.gz",
file_size: number_to_human_size(File.size("#{absolute_path}.gz"))
)
else
SystemMessage.create_from_system_user(@current_user, :csv_export_failed)
end
end
end
end
end

15
app/models/user_export.rb
View file

@ -2,23 +2,16 @@ class UserExport < ActiveRecord::Base
def self.get_download_path(filename)
path = File.join(UserExport.base_directory, filename)
if File.exists?(path)
return path
else
nil
end
File.exists?(path) ? path : nil
end
def self.remove_old_exports
expired_exports = UserExport.where('created_at < ?', 2.days.ago).to_a
expired_exports.map do |expired_export|
UserExport.where('created_at < ?', 2.days.ago).find_each do |expired_export|
file_name = "#{expired_export.file_name}-#{expired_export.id}.csv.gz"
file_path = "#{UserExport.base_directory}/#{file_name}"
if File.exist?(file_path)
File.delete(file_path)
end
UserExport.find(expired_export.id).destroy
File.delete(file_path) if File.exist?(file_path)
expired_export.destroy
end
end