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Close http connection in perform method of Request class (#6889) 

HTTP connections must be explicitly closed in many cases, and letting
perform method close connections makes its callers less redundant and
prevent them from forgetting to close connections.
rebase/4.0.0rc2
Akihiko Odaki 2018-03-24 20:49:54 +09:00 committed by Eugen Rochko
parent 4e71b104e6
commit 54b273bf99
15 changed files with 134 additions and 127 deletions
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6
app/helpers/jsonld_helper.rb
View File

@ -60,9 +60,9 @@ module JsonLdHelper
end
def fetch_resource_without_id_validation(uri)
response = build_request(uri).perform
return if response.code != 200
body_to_json(response.to_s)
build_request(uri).perform do |response|
response.code == 200 ? body_to_json(response.to_s) : nil
end
end
def body_to_json(body)

17
app/lib/provider_discovery.rb
View File

@ -13,15 +13,14 @@ class ProviderDiscovery < OEmbed::ProviderDiscovery
def discover_provider(url, **options)
format = options[:format]
if options[:html]
html = Nokogiri::HTML(options[:html])
else
res = Request.new(:get, url).perform
raise OEmbed::NotFound, url if res.code != 200 || res.mime_type != 'text/html'
html = Nokogiri::HTML(res.to_s)
end
html = if options[:html]
Nokogiri::HTML(options[:html])
else
Request.new(:get, url).perform do |res|
raise OEmbed::NotFound, url if res.code != 200 || res.mime_type != 'text/html'
Nokogiri::HTML(res.to_s)
end
end
if format.nil? || format == :json
provider_endpoint ||= html.at_xpath('//link[@type="application/json+oembed"]')&.attribute('href')&.value

16
app/lib/request.rb
View File

@ -33,9 +33,17 @@ class Request
end
def perform
http_client.headers(headers).public_send(@verb, @url.to_s, @options)
rescue => e
raise e.class, "#{e.message} on #{@url}", e.backtrace[0]
begin
response = http_client.headers(headers).public_send(@verb, @url.to_s, @options)
rescue => e
raise e.class, "#{e.message} on #{@url}", e.backtrace[0]
end
begin
yield response
ensure
http_client.close
end
end
def headers
@ -88,7 +96,7 @@ class Request
end
def http_client
HTTP.timeout(:per_operation, timeout).follow(max_hops: 2)
@http_client ||= HTTP.timeout(:per_operation, timeout).follow(max_hops: 2)
end
class Socket < TCPSocket

28
app/models/concerns/remotable.rb
View File

@ -21,23 +21,23 @@ module Remotable
return if !%w(http https).include?(parsed_url.scheme) || parsed_url.host.empty? || self[attribute_name] == url
begin
response = Request.new(:get, url).perform
Request.new(:get, url).perform do |response|
next if response.code != 200
return if response.code != 200
matches = response.headers['content-disposition']&.match(/filename="([^"]*)"/)
filename = matches.nil? ? parsed_url.path.split('/').last : matches[1]
basename = SecureRandom.hex(8)
extname = if filename.nil?
''
else
File.extname(filename)
end
matches = response.headers['content-disposition']&.match(/filename="([^"]*)"/)
filename = matches.nil? ? parsed_url.path.split('/').last : matches[1]
basename = SecureRandom.hex(8)
extname = if filename.nil?
''
else
File.extname(filename)
end
send("#{attachment_name}=", StringIO.new(response.to_s))
send("#{attachment_name}_file_name=", basename + extname)
send("#{attachment_name}=", StringIO.new(response.to_s))
send("#{attachment_name}_file_name=", basename + extname)
self[attribute_name] = url if has_attribute?(attribute_name)
self[attribute_name] = url if has_attribute?(attribute_name)
end
rescue HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError, Mastodon::HostValidationError => e
Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
nil

47
app/services/fetch_atom_service.rb
View File

@ -24,43 +24,44 @@ class FetchAtomService < BaseService
def process(url, terminal = false)
@url = url
perform_request
process_response(terminal)
perform_request { |response| process_response(response, terminal) }
end
def perform_request
def perform_request(&block)
accept = 'text/html'
accept = 'application/activity+json, application/ld+json, application/atom+xml, ' + accept unless @unsupported_activity
@response = Request.new(:get, @url)
.add_headers('Accept' => accept)
.perform
Request.new(:get, @url).add_headers('Accept' => accept).perform(&block)
end
def process_response(terminal = false)
return nil if @response.code != 200
def process_response(response, terminal = false)
return nil if response.code != 200
if @response.mime_type == 'application/atom+xml'
[@url, { prefetched_body: @response.to_s }, :ostatus]
elsif ['application/activity+json', 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'].include?(@response.mime_type)
json = body_to_json(@response.to_s)
if response.mime_type == 'application/atom+xml'
[@url, { prefetched_body: response.to_s }, :ostatus]
elsif ['application/activity+json', 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'].include?(response.mime_type)
json = body_to_json(response.to_s)
if supported_context?(json) && json['type'] == 'Person' && json['inbox'].present?
[json['id'], { prefetched_body: @response.to_s, id: true }, :activitypub]
[json['id'], { prefetched_body: response.to_s, id: true }, :activitypub]
elsif supported_context?(json) && json['type'] == 'Note'
[json['id'], { prefetched_body: @response.to_s, id: true }, :activitypub]
[json['id'], { prefetched_body: response.to_s, id: true }, :activitypub]
else
@unsupported_activity = true
nil
end
elsif @response['Link'] && !terminal && link_header.find_link(%w(rel alternate))
process_headers
elsif @response.mime_type == 'text/html' && !terminal
process_html
elsif !terminal
link_header = response['Link'] && parse_link_header(response)
if link_header&.find_link(%w(rel alternate))
process_link_headers(link_header)
elsif response.mime_type == 'text/html'
process_html(response)
end
end
end
def process_html
page = Nokogiri::HTML(@response.to_s)
def process_html(response)
page = Nokogiri::HTML(response.to_s)
json_link = page.xpath('//link[@rel="alternate"]').find { |link| ['application/activity+json', 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'].include?(link['type']) }
atom_link = page.xpath('//link[@rel="alternate"]').find { |link| link['type'] == 'application/atom+xml' }
@ -71,7 +72,7 @@ class FetchAtomService < BaseService
result
end
def process_headers
def process_link_headers(link_header)
json_link = link_header.find_link(%w(rel alternate), %w(type application/activity+json)) || link_header.find_link(%w(rel alternate), ['type', 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'])
atom_link = link_header.find_link(%w(rel alternate), %w(type application/atom+xml))
@ -81,7 +82,7 @@ class FetchAtomService < BaseService
result
end
def link_header
@link_header ||= LinkHeader.parse(@response['Link'].is_a?(Array) ? @response['Link'].first : @response['Link'])
def parse_link_header(response)
LinkHeader.parse(response['Link'].is_a?(Array) ? response['Link'].first : response['Link'])
end
end

21
app/services/fetch_link_card_service.rb
View File

@ -36,15 +36,24 @@ class FetchLinkCardService < BaseService
def process_url
@card ||= PreviewCard.new(url: @url)
res = Request.new(:head, @url).perform
return if res.code != 405 && (res.code != 200 || res.mime_type != 'text/html')
failed = Request.new(:head, @url).perform do |res|
res.code != 405 && (res.code != 200 || res.mime_type != 'text/html')
end
@response = Request.new(:get, @url).perform
return if failed
return if @response.code != 200 || @response.mime_type != 'text/html'
Request.new(:get, @url).perform do |res|
if res.code == 200 && res.mime_type == 'text/html'
@html = res.to_s
@html_charset = res.charset
else
@html = nil
@html_charset = nil
end
end
@html = @response.to_s
return if @html.nil?
attempt_oembed || attempt_opengraph
end
@ -118,7 +127,7 @@ class FetchLinkCardService < BaseService
detector = CharlockHolmes::EncodingDetector.new
detector.strip_tags = true
guess = detector.detect(@html, @response.charset)
guess = detector.detect(@html, @html_charset)
page = Nokogiri::HTML(@html, nil, guess&.fetch(:encoding, nil))
if meta_property(page, 'twitter:player')

9
app/services/resolve_account_service.rb
View File

@ -179,11 +179,10 @@ class ResolveAccountService < BaseService
def atom_body
return @atom_body if defined?(@atom_body)
response = Request.new(:get, atom_url).perform
raise Mastodon::UnexpectedResponseError, response unless response.code == 200
@atom_body = response.to_s
@atom_body = Request.new(:get, atom_url).perform do |response|
raise Mastodon::UnexpectedResponseError, response unless response.code == 200
response.to_s
end
end
def actor_json

8
app/services/send_interaction_service.rb
View File

@ -12,11 +12,9 @@ class SendInteractionService < BaseService
return if !target_account.ostatus? || block_notification?
delivery = build_request.perform
raise Mastodon::UnexpectedResponseError, delivery unless delivery.code > 199 && delivery.code < 300
delivery.connection&.close
build_request.perform do |delivery|
raise Mastodon::UnexpectedResponseError, delivery unless delivery.code > 199 && delivery.code < 300
end
end
private

34
app/services/subscribe_service.rb
View File

@ -6,21 +6,21 @@ class SubscribeService < BaseService
@account = account
@account.secret = SecureRandom.hex
@response = build_request.perform
if response_failed_permanently?
# We're not allowed to subscribe. Fail and move on.
@account.secret = ''
@account.save!
elsif response_successful?
# The subscription will be confirmed asynchronously.
@account.save!
else
# The response was either a 429 rate limit, or a 5xx error.
# We need to retry at a later time. Fail loudly!
raise Mastodon::UnexpectedResponseError, @response
build_request.perform do |response|
if response_failed_permanently? response
# We're not allowed to subscribe. Fail and move on.
@account.secret = ''
@account.save!
elsif response_successful? response
# The subscription will be confirmed asynchronously.
@account.save!
else
# The response was either a 429 rate limit, or a 5xx error.
# We need to retry at a later time. Fail loudly!
raise Mastodon::UnexpectedResponseError, response
end
end
@response.connection&.close
end
private
@ -47,12 +47,12 @@ class SubscribeService < BaseService
end
# Any response in the 3xx or 4xx range, except for 429 (rate limit)
def response_failed_permanently?
(@response.status.redirect? || @response.status.client_error?) && !@response.status.too_many_requests?
def response_failed_permanently?(response)
(response.status.redirect? || response.status.client_error?) && !response.status.too_many_requests?
end
# Any response in the 2xx range
def response_successful?
@response.status.success?
def response_successful?(response)
response.status.success?
end
end

7
app/services/unsubscribe_service.rb
View File

@ -7,10 +7,9 @@ class UnsubscribeService < BaseService
@account = account
begin
@response = build_request.perform
Rails.logger.debug "PuSH unsubscribe for #{@account.acct} failed: #{@response.status}" unless @response.status.success?
@response.connection&.close
build_request.perform do |response|
Rails.logger.debug "PuSH unsubscribe for #{@account.acct} failed: #{response.status}" unless response.status.success?
end
rescue HTTP::Error, OpenSSL::SSL::SSLError => e
Rails.logger.debug "PuSH unsubscribe for #{@account.acct} failed: #{e}"
end

15
app/workers/activitypub/delivery_worker.rb
View File

@ -12,11 +12,10 @@ class ActivityPub::DeliveryWorker
@source_account = Account.find(source_account_id)
@inbox_url = inbox_url
perform_request
perform_request do |response|
raise Mastodon::UnexpectedResponseError, response unless response_successful? response
end
raise Mastodon::UnexpectedResponseError, @response unless response_successful?
@response.connection&.close
failure_tracker.track_success!
rescue => e
failure_tracker.track_failure!
@ -31,12 +30,12 @@ class ActivityPub::DeliveryWorker
request.add_headers(HEADERS)
end
def perform_request
@response = build_request.perform
def perform_request(&block)
build_request.perform(&block)
end
def response_successful?
@response.code > 199 && @response.code < 300
def response_successful?(response)
response.code > 199 && response.code < 300
end
def failure_tracker

18
app/workers/pubsubhubbub/confirmation_worker.rb
View File

@ -21,8 +21,8 @@ class Pubsubhubbub::ConfirmationWorker
def process_confirmation
prepare_subscription
confirm_callback
logger.debug "Confirming PuSH subscription for #{subscription.callback_url} with challenge #{challenge}: #{callback_response_body}"
callback_get_with_params
logger.debug "Confirming PuSH subscription for #{subscription.callback_url} with challenge #{challenge}: #{@callback_response_body}"
update_subscription
end
@ -44,7 +44,7 @@ class Pubsubhubbub::ConfirmationWorker
end
def response_matches_challenge?
callback_response_body == challenge
@callback_response_body == challenge
end
def subscribing?
@ -55,16 +55,10 @@ class Pubsubhubbub::ConfirmationWorker
mode == 'unsubscribe'
end
def confirm_callback
@_confirm_callback ||= callback_get_with_params
end
def callback_get_with_params
Request.new(:get, subscription.callback_url, params: callback_params).perform
end
def callback_response_body
confirm_callback.body.to_s
Request.new(:get, subscription.callback_url, params: callback_params).perform do |response|
@callback_response_body = response.body.to_s
end
end
def callback_params

17
app/workers/pubsubhubbub/delivery_worker.rb
View File

@ -23,22 +23,17 @@ class Pubsubhubbub::DeliveryWorker
private
def process_delivery
payload_delivery
callback_post_payload do |payload_delivery|
raise Mastodon::UnexpectedResponseError, payload_delivery unless response_successful? payload_delivery
end
raise Mastodon::UnexpectedResponseError, payload_delivery unless response_successful?
payload_delivery.connection&.close
subscription.touch(:last_successful_delivery_at)
end
def payload_delivery
@_payload_delivery ||= callback_post_payload
end
def callback_post_payload
def callback_post_payload(&block)
request = Request.new(:post, subscription.callback_url, body: payload)
request.add_headers(headers)
request.perform
request.perform(&block)
end
def blocked_domain?
@ -80,7 +75,7 @@ class Pubsubhubbub::DeliveryWorker
OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha1'), subscription.secret, payload)
end
def response_successful?
def response_successful?(payload_delivery)
payload_delivery.code > 199 && payload_delivery.code < 300
end
end

4
lib/tasks/mastodon.rake
View File

@ -777,7 +777,7 @@ namespace :mastodon do
progress_bar.increment
begin
res = Request.new(:head, account.uri).perform
code = Request.new(:head, account.uri).perform(&:code)
rescue StandardError
# This could happen due to network timeout, DNS timeout, wrong SSL cert, etc,
# which should probably not lead to perceiving the account as deleted, so
@ -785,7 +785,7 @@ namespace :mastodon do
next
end
if [404, 410].include?(res.code)
if [404, 410].include?(code)
if options[:force]
SuspendAccountService.new.call(account)
account.destroy

14
spec/lib/request_spec.rb
View File

@ -39,12 +39,10 @@ describe Request do
describe '#perform' do
context 'with valid host' do
before do
stub_request(:get, 'http://example.com')
subject.perform
end
before { stub_request(:get, 'http://example.com') }
it 'executes a HTTP request' do
expect { |block| subject.perform &block }.to yield_control
expect(a_request(:get, 'http://example.com')).to have_been_made.once
end
@ -52,12 +50,20 @@ describe Request do
allow(Addrinfo).to receive(:foreach).with('example.com', nil, nil, :SOCK_STREAM)
.and_yield(Addrinfo.new(["AF_INET", 0, "example.com", "0.0.0.0"], :PF_INET, :SOCK_STREAM))
.and_yield(Addrinfo.new(["AF_INET6", 0, "example.com", "2001:4860:4860::8844"], :PF_INET6, :SOCK_STREAM))
expect { |block| subject.perform &block }.to yield_control
expect(a_request(:get, 'http://example.com')).to have_been_made.once
end
it 'sets headers' do
expect { |block| subject.perform &block }.to yield_control
expect(a_request(:get, 'http://example.com').with(headers: subject.headers)).to have_been_made
end
it 'closes underlaying connection' do
expect_any_instance_of(HTTP::Client).to receive(:close)
expect { |block| subject.perform &block }.to yield_control
end
end
context 'with private host' do