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big_sitemap.rb
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big_sitemap.rb
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require 'uri'
require 'fileutils'
require 'big_sitemap/builder'
class BigSitemap
DEFAULTS = {
:max_per_sitemap => Builder::MAX_URLS,
:batch_size => 1001, # TODO: Deprecate
:document_path => '/',
:gzip => true,
# Opinionated
:ping_google => true,
:ping_yahoo => false, # needs :yahoo_app_id
:ping_bing => false,
:ping_ask => false
}
# TODO: Deprecate
COUNT_METHODS = [:count_for_sitemap, :count]
FIND_METHODS = [:find_for_sitemap, :all]
TIMESTAMP_METHODS = [:updated_at, :updated_on, :updated, :created_at, :created_on, :created]
PARAM_METHODS = [:to_param, :id]
class << self
def generate(options={}, &block)
@sitemap = self.new(options)
@sitemap.first_id_of_last_sitemap = first_id_of_last_sitemap
instance_eval(&block)
@sitemap.with_lock do
@sitemap.generate(options)
end
end
private
def first_id_of_last_sitemap
Dir["#{@sitemap.document_full}sitemap*.{xml,xml.gz}"].map do |file|
file.to_s.scan(/sitemap_(.+).xml/).flatten.last.to_i
end.sort.last
end
def add(path, options={})
@sitemap.add_path(path, options)
end
end
def initialize(options={})
@options = DEFAULTS.merge options
if @options[:max_per_sitemap] <= 1
raise ArgumentError, '":max_per_sitemap" must be greater than 1'
end
if @options[:url_options] && !@options[:base_url]
@options[:base_url] = URI::Generic.build( {:scheme => "http"}.merge(@options.delete(:url_options)) ).to_s
end
unless @options[:base_url]
raise ArgumentError, 'you must specify either ":url_options" hash or ":base_url" string'
end
@options[:url_path] ||= @options[:document_path]
unless @options[:document_root]
raise ArgumentError, 'Document root must be specified with the ":document_root" option"'
end
@options[:document_full] ||= File.join(@options[:document_root], @options[:document_path])
unless @options[:document_full]
raise ArgumentError, 'Document root must be specified with the ":document_root" option, the full path with ":document_full"'
end
Dir.mkdir(@options[:document_full]) unless File.exists?(@options[:document_full])
@sources = []
@models = []
@sitemap_files = []
end
def first_id_of_last_sitemap
@first_id_of_last_sitemap
end
def first_id_of_last_sitemap=(first_id)
@first_id_of_last_sitemap = first_id
end
def document_full
@options[:document_full]
end
def add(model, options={})
warn 'BigSitemap#add is deprecated. Please use BigSitemap.generate and call add inside the block (in BigSitemap 1.0.0+). You will have to perform the find and generate the path for each record yourself.'
@models << model
filename_suffix = @models.count(model) - 1
options[:path] ||= table_name(model)
options[:filename] ||= file_name(model)
options[:primary_column] ||= 'id' if model.new.respond_to?('id')
options[:partial_update] = @options[:partial_update] && options[:partial_update] != false
options[:filename] << "_#{filename_suffix}" unless filename_suffix == 0
@sources << [model, options.dup]
self
end
def add_path(path, options)
@paths ||= []
@paths << [path, options]
self
end
def add_static(url, time = nil, frequency = nil, priority = nil)
warn 'BigSitemap#add_static is deprecated. Please use BigSitemap#add_path instead'
@static_pages ||= []
@static_pages << [url, time, frequency, priority]
self
end
def with_lock
lock!
begin
yield
ensure
unlock!
end
rescue Errno::EACCES => e
STDERR.puts 'Lockfile exists' if $VERBOSE
end
def file_name(name=nil)
name = table_name(name) unless (name.nil? || name.is_a?(String))
prefix = 'sitemap'
prefix << '_' unless name.nil?
File.join(@options[:document_full], "#{prefix}#{name}")
end
def dir_files
File.join(@options[:document_full], "sitemap*.{xml,xml.gz}")
end
def clean
Dir[dir_files].each do |file|
FileUtils.rm file
end
self
end
# TODO: Deprecate (move to private)
def generate(options={})
clean unless options[:partial_update]
# TODO: Ddeprecate
prepare_update
add_urls
# TODO: Deprecate
generate_models
generate_static
generate_sitemap_index
ping_search_engines
self
end
def add_urls
return self if Array(@paths).empty?
with_sitemap do |builder|
@paths.each do |path, options|
url = File.join @options[:base_url], File.path(path)
builder.add_url! url, options
end
end
self
end
# Create a sitemap index document
def generate_sitemap_index(files=nil)
files ||= Dir[dir_files]
with_sitemap({:name => 'index', :type => 'index'}) do |sitemap|
for path in files
next if path =~ /index/
sitemap.add_url! url_for_sitemap(path), :last_modified => File.stat(path).mtime
end
end
self
end
def ping_search_engines
require 'net/http'
require 'cgi'
sitemap_uri = CGI::escape(url_for_sitemap(@sitemap_files.last))
if @options[:ping_google]
Net::HTTP.get('www.google.com', "/webmasters/tools/ping?sitemap=#{sitemap_uri}")
end
if @options[:ping_yahoo]
if @options[:yahoo_app_id]
Net::HTTP.get(
'search.yahooapis.com', "/SiteExplorerService/V1/updateNotification?" +
"appid=#{@options[:yahoo_app_id]}&url=#{sitemap_uri}"
)
else
STDERR.puts 'unable to ping Yahoo: no ":yahoo_app_id" provided'
end
end
if @options[:ping_bing]
Net::HTTP.get('www.bing.com', "/webmaster/ping.aspx?siteMap=#{sitemap_uri}")
end
if @options[:ping_ask]
Net::HTTP.get('submissions.ask.com', "/ping?sitemap=#{sitemap_uri}")
end
end
# TODO: Deprecate
def get_last_id(filename)
Dir["#{filename}*.{xml,xml.gz}"].map do |file|
file.to_s.scan(/#{filename}_(.+).xml/).flatten.last.to_i
end.sort.last
end
private
# TODO: Deprecate
def table_name(model)
model.table_name
end
# TODO: Deprecate
def generate_models
for model, options in @sources
with_sitemap(options.dup.merge({:name => model})) do |sitemap|
last_id = nil #id of last processed item
count_method = pick_method(model, COUNT_METHODS)
find_method = pick_method(model, FIND_METHODS)
raise ArgumentError, "#{model} must provide a count_for_sitemap class method" if count_method.nil?
raise ArgumentError, "#{model} must provide a find_for_sitemap class method" if find_method.nil?
find_options = {}
[:conditions, :limit, :joins, :select, :order, :include, :group].each do |key|
find_options[key] = options.delete(key)
end
primary_method = options.delete(:primary_column)
primary_column = "#{table_name(model)}.#{primary_method}"
count = model.send(count_method, find_options.merge(:select => (primary_column || '*'), :include => nil))
count = find_options[:limit].to_i if find_options[:limit] && find_options[:limit].to_i < count
num_sitemaps = 1
num_batches = 1
if count > @options[:batch_size]
num_batches = (count.to_f / @options[:batch_size].to_f).ceil
num_sitemaps = (count.to_f / @options[:max_per_sitemap].to_f).ceil
end
batches_per_sitemap = num_batches.to_f / num_sitemaps.to_f
for sitemap_num in 1..num_sitemaps
# Work out the start and end batch numbers for this sitemap
batch_num_start = sitemap_num == 1 ? 1 : ((sitemap_num * batches_per_sitemap).ceil - batches_per_sitemap + 1).to_i
batch_num_end = (batch_num_start + [batches_per_sitemap, num_batches].min).floor - 1
for batch_num in batch_num_start..batch_num_end
offset = (batch_num - 1) * @options[:batch_size]
limit = (count - offset) < @options[:batch_size] ? (count - offset) : @options[:batch_size]
find_options.update(:limit => limit, :offset => offset) if num_batches > 1
if last_id && primary_column
find_options.update(:limit => limit, :offset => nil)
primary_column_value = escape_if_string last_id #escape '
find_options.update(:conditions => [find_options[:conditions], "(#{primary_column} > #{primary_column_value})"].compact.join(' AND '))
end
model.send(find_method, find_options).each do |record|
last_mod = options[:last_modified]
if last_mod.is_a?(Proc)
last_mod = last_mod.call(record)
elsif last_mod.nil?
last_mod_method = pick_method(record, TIMESTAMP_METHODS)
last_mod = last_mod_method.nil? ? Time.now : record.send(last_mod_method)
end
param_method = pick_method(record, PARAM_METHODS)
location =
if options[:location].is_a?(Proc)
options[:location].call(record)
else
File.join @options[:base_url], options[:path], record.send(param_method).to_s
end
change_frequency = options[:change_frequency]
freq = change_frequency.is_a?(Proc) ? change_frequency.call(record) : change_frequency
priority = options[:priority]
pri = priority.is_a?(Proc) ? priority.call(record) : priority
last_id = primary_column ? record.send(primary_method) : nil
sitemap.add_url!(location, {
:last_modified => last_mod,
:change_frequency => freq,
:priority => pri,
:part_number => last_id
}) if location
end
end
end
end
end
self
end
# TODO: Deprecate
def generate_static
return self if Array(@static_pages).empty?
with_sitemap({:name => 'static', :type => 'static'}) do |sitemap|
@static_pages.each do |location, last_mod, freq, pri|
sitemap.add_url!(location, {
:last_modified => last_mod,
:change_frequency => freq,
:priority => pri
})
end
end
self
end
# TODO: Deprecate
def prepare_update
@files_to_move = []
@sources.each do |model, options|
if options[:partial_update] && (primary_column = options[:primary_column]) && (last_id = get_last_id(options[:filename]))
primary_column_value = escape_if_string last_id #escape '
options[:conditions] = [options[:conditions], "(#{table_name(model)}.#{primary_column} >= #{primary_column_value})"].compact.join(' AND ')
options[:start_part_id] = last_id
end
end
end
def lock!(lock_file = 'generator.lock')
lock_file = File.join(@options[:document_full], lock_file)
File.open(lock_file, 'w', File::EXCL)
end
def unlock!(lock_file = 'generator.lock')
lock_file = File.join(@options[:document_full], lock_file)
FileUtils.rm lock_file
end
def with_sitemap(options={})
options[:filename] ||= file_name(options[:name])
options[:type] ||= 'sitemap'
options[:max_urls] ||= @options["max_per_#{options[:type]}".to_sym]
options[:gzip] ||= @options[:gzip]
options[:indent] ||= 2
options[:partial_update] ||= @options[:partial_update]
options[:start_part_id] ||= first_id_of_last_sitemap
sitemap = if options[:type] == 'index'
IndexBuilder.new(options)
elsif options[:geo]
options[:filename] << '_kml'
GeoBuilder.new(options)
else
Builder.new(options)
end
begin
yield sitemap
ensure
sitemap.close!
@sitemap_files.concat sitemap.filepaths!
end
end
def pick_method(model, candidates)
method = nil
candidates.each do |candidate|
if model.respond_to? candidate
method = candidate
break
end
end
method
end
# TODO: Deprecate
def escape_if_string(value)
(value.to_i.to_s == value.to_s) ? value.to_i : "'#{value.gsub("'", %q(\\\'))}'"
end
def url_for_sitemap(path)
File.join @options[:base_url], @options[:url_path], File.basename(path)
end
end
class BigSitemapRails < BigSitemap
def self.generate(options={}, &block)
raise 'No Rails Environment loaded' unless defined? Rails
DEFAULTS.merge!(:document_root => "#{Rails.root}/public", :url_options => default_url_options)
super(options, &block)
end
end
class BigSitemapMerb < BigSitemap
def self.generate(options={}, &block)
raise 'No Merb Environment loaded' unless defined? ::Merb
require 'extlib'
DEFAULTS.merge!(:document_root => "#{Merb.root}/public")
super(options, &block)
end
end