mastodon/app/services/subscribe_service.rb

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# frozen_string_literal: true
class SubscribeService < BaseService
def call(account)
account.secret = SecureRandom.hex
subscription = account.subscription(api_subscription_url(account.id))
response = subscription.subscribe
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 "Subscription attempt failed for #{account.acct} (#{account.hub_url}): HTTP #{response.code}"
end
end
private
# Any response in the 3xx or 4xx range, except for 429 (rate limit)
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)
response.status.success?
end
end