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https://github.com/mastodon/mastodon
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40e5d2303b
to_s method of HTTP::Response keeps blocking while it receives the whole content, no matter how it is big. This means it may waste time to receive unacceptably large files. It may also consume memory and disk in the process. This solves the inefficency by checking response length while receiving.
83 lines
1.9 KiB
Ruby
83 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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class Pubsubhubbub::ConfirmationWorker
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include Sidekiq::Worker
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include RoutingHelper
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sidekiq_options queue: 'push', retry: false
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attr_reader :subscription, :mode, :secret, :lease_seconds
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def perform(subscription_id, mode, secret = nil, lease_seconds = nil)
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@subscription = Subscription.find(subscription_id)
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@mode = mode
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@secret = secret
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@lease_seconds = lease_seconds
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process_confirmation
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end
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private
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def process_confirmation
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prepare_subscription
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callback_get_with_params
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logger.debug "Confirming PuSH subscription for #{subscription.callback_url} with challenge #{challenge}: #{@callback_response_body}"
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update_subscription
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end
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def update_subscription
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if successful_subscribe?
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subscription.save!
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elsif successful_unsubscribe?
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subscription.destroy!
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end
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end
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def successful_subscribe?
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subscribing? && response_matches_challenge?
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end
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def successful_unsubscribe?
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(unsubscribing? && response_matches_challenge?) || !subscription.confirmed?
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end
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def response_matches_challenge?
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@callback_response_body == challenge
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end
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def subscribing?
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mode == 'subscribe'
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end
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def unsubscribing?
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mode == 'unsubscribe'
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end
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def callback_get_with_params
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Request.new(:get, subscription.callback_url, params: callback_params).perform do |response|
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@callback_response_body = response.body_with_limit
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end
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end
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def callback_params
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{
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'hub.topic': account_url(subscription.account, format: :atom),
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'hub.mode': mode,
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'hub.challenge': challenge,
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'hub.lease_seconds': subscription.lease_seconds,
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}
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end
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def prepare_subscription
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subscription.secret = secret
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subscription.lease_seconds = lease_seconds
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subscription.confirmed = true
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end
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def challenge
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@_challenge ||= SecureRandom.hex
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end
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end
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