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Fix database serialization failure returning HTTP 500 (#16101)

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Database serialization failure occurs when a read-replica is used
and a query takes long enough that rows on the primary database
become unavailable. It should return HTTP 503 as it is temporary.

Re-order rescue definitions according to their status codes
This commit is contained in:
Eugen Rochko 2021-05-05 19:44:35 +02:00 committed by Claire
parent 48b25e457d
commit b593a7da8c
1 changed files with 7 additions and 8 deletions
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15
app/controllers/application_controller.rb
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@ -20,17 +20,16 @@ class ApplicationController < ActionController::Base
helper_method :use_seamless_external_login?
helper_method :whitelist_mode?
rescue_from ActionController::RoutingError, with: :not_found
rescue_from ActionController::InvalidAuthenticityToken, with: :unprocessable_entity
rescue_from ActionController::UnknownFormat, with: :not_acceptable
rescue_from ActionController::ParameterMissing, with: :bad_request
rescue_from Paperclip::AdapterRegistry::NoHandlerError, with: :bad_request
rescue_from ActiveRecord::RecordNotFound, with: :not_found
rescue_from ActionController::ParameterMissing, Paperclip::AdapterRegistry::NoHandlerError, with: :bad_request
rescue_from Mastodon::NotPermittedError, with: :forbidden
rescue_from HTTP::Error, OpenSSL::SSL::SSLError, with: :internal_server_error
rescue_from Mastodon::RaceConditionError, Seahorse::Client::NetworkingError, Stoplight::Error::RedLight, with: :service_unavailable
rescue_from ActionController::RoutingError, ActiveRecord::RecordNotFound, with: :not_found
rescue_from ActionController::UnknownFormat, with: :not_acceptable
rescue_from ActionController::InvalidAuthenticityToken, with: :unprocessable_entity
rescue_from Mastodon::RateLimitExceededError, with: :too_many_requests
rescue_from HTTP::Error, OpenSSL::SSL::SSLError, with: :internal_server_error
rescue_from Mastodon::RaceConditionError, Seahorse::Client::NetworkingError, Stoplight::Error::RedLight, ActiveRecord::SerializationFailure, with: :service_unavailable
before_action :store_current_location, except: :raise_not_found, unless: :devise_controller?
before_action :require_functional!, if: :user_signed_in?