mastodon-glitch/lib/mastodon/cli/federation.rb

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# frozen_string_literal: true
module Mastodon::CLI
module Federation
extend ActiveSupport::Concern
included do
desc 'self-destruct', 'Erase the server from the federation'
long_desc <<~LONG_DESC
Erase the server from the federation by broadcasting account delete
activities to all known other servers. This allows a "clean exit" from
running a Mastodon server, as it leaves next to no cache behind on
other servers.
This command is always interactive and requires confirmation twice.
No local data is actually deleted, because emptying the
database or removing files is much faster through other, external
means, such as e.g. deleting the entire VPS. However, because other
servers will delete data about local users, but no local data will be
updated (such as e.g. followers), there will be a state mismatch
that will lead to glitches and issues if you then continue to run and use
the server.
So either you know exactly what you are doing, or you are starting
from a blank slate afterwards by manually clearing out all the local
data!
LONG_DESC
def self_destruct
if SelfDestructHelper.self_destruct?
say('Self-destruct mode is already enabled for this Mastodon server', :green)
pending_accounts = Account.local.without_suspended.count + Account.local.suspended.joins(:deletion_request).count
sidekiq_stats = Sidekiq::Stats.new
if pending_accounts.positive?
say("#{pending_accounts} accounts are still pending deletion.", :yellow)
elsif sidekiq_stats.enqueued.positive?
say('Deletion notices are still being processed', :yellow)
elsif sidekiq_stats.retry_size.positive?
say('At least one delivery attempt for each deletion notice has been made, but some have failed and are scheduled for retry', :yellow)
else
say('Every deletion notice has been sent! You can safely delete all data and decomission your servers!', :green)
end
raise(SystemExit)
end
fail_with_message 'Domains do not match. Stopping self-destruct initiation.' unless domain_match_confirmed?
say(<<~WARNING, :yellow)
This operation WILL NOT be reversible.
While the data won't be erased locally, the server will be in a BROKEN STATE afterwards.
The deletion process itself may take a long time, and will be handled by Sidekiq, so do not shut it down until it has finished (you will be able to re-run this command to see the state of the self-destruct process).
WARNING
fail_with_message 'Operation cancelled. Self-destruct will not begin.' if proceed_prompt_negative?
say(<<~INSTRUCTIONS, :green)
To switch Mastodon to self-destruct mode, add the following variable to your evironment (e.g. by adding a line to your `.env.production`) and restart all Mastodon processes:
SELF_DESTRUCT=#{self_destruct_value}
You can re-run this command to see the state of the self-destruct process.
INSTRUCTIONS
end
private
def domain_match_confirmed?
ask('Type in the domain of the server to confirm:') == Rails.configuration.x.local_domain
end
def proceed_prompt_negative?
no?('Are you sure you want to proceed?')
end
def self_destruct_value
Rails
.application
.message_verifier('self-destruct')
.generate(Rails.configuration.x.local_domain)
end
end
end
end