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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.
This commit is contained in:
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)

11
app/lib/provider_discovery.rb
View File

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

12
app/lib/request.rb
View File

@ -33,11 +33,19 @@ class Request
end
def perform
http_client.headers(headers).public_send(@verb, @url.to_s, @options)
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
(@account ? @headers.merge('Signature' => signature) : @headers).without(REQUEST_TARGET)
end
@ -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

6
app/models/concerns/remotable.rb
View File

@ -21,9 +21,8 @@ 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
return if response.code != 200
Request.new(:get, url).perform do |response|
next if response.code != 200
matches = response.headers['content-disposition']&.match(/filename="([^"]*)"/)
filename = matches.nil? ? parsed_url.path.split('/').last : matches[1]
@ -38,6 +37,7 @@ module Remotable
send("#{attachment_name}_file_name=", basename + extname)
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')

7
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
@atom_body = Request.new(:get, atom_url).perform do |response|
raise Mastodon::UnexpectedResponseError, response unless response.code == 200
@atom_body = response.to_s
response.to_s
end
end
def actor_json

6
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
build_request.perform do |delivery|
raise Mastodon::UnexpectedResponseError, delivery unless delivery.code > 199 && delivery.code < 300
delivery.connection&.close
end
end
private

18
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?
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?
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
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

16
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
Request.new(:get, subscription.callback_url, params: callback_params).perform do |response|
@callback_response_body = response.body.to_s
end
def callback_response_body
confirm_callback.body.to_s
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