Add Api::ErrorHandling concern for api/base controller (#29574)

app/controllers/concerns/api/error_handling.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+module Api::ErrorHandling
+  extend ActiveSupport::Concern
+
+  included do
+    rescue_from ActiveRecord::RecordInvalid, Mastodon::ValidationError do |e|
+      render json: { error: e.to_s }, status: 422
+    end
+
+    rescue_from ActiveRecord::RecordNotUnique do
+      render json: { error: 'Duplicate record' }, status: 422
+    end
+
+    rescue_from Date::Error do
+      render json: { error: 'Invalid date supplied' }, status: 422
+    end
+
+    rescue_from ActiveRecord::RecordNotFound do
+      render json: { error: 'Record not found' }, status: 404
+    end
+
+    rescue_from HTTP::Error, Mastodon::UnexpectedResponseError do
+      render json: { error: 'Remote data could not be fetched' }, status: 503
+    end
+
+    rescue_from OpenSSL::SSL::SSLError do
+      render json: { error: 'Remote SSL certificate could not be verified' }, status: 503
+    end
+
+    rescue_from Mastodon::NotPermittedError do
+      render json: { error: 'This action is not allowed' }, status: 403
+    end
+
+    rescue_from Seahorse::Client::NetworkingError do |e|
+      Rails.logger.warn "Storage server error: #{e}"
+      render json: { error: 'There was a temporary problem serving your request, please try again' }, status: 503
+    end
+
+    rescue_from Mastodon::RaceConditionError, Stoplight::Error::RedLight do
+      render json: { error: 'There was a temporary problem serving your request, please try again' }, status: 503
+    end
+
+    rescue_from Mastodon::RateLimitExceededError do
+      render json: { error: I18n.t('errors.429') }, status: 429
+    end
+
+    rescue_from ActionController::ParameterMissing, Mastodon::InvalidParameterError do |e|
+      render json: { error: e.to_s }, status: 400
+    end
+  end
+end