f85f167f50
This implements archive import feature. The feature is divided in two main subfeatures: archive validation and archive import. Archive validation performs different validation on input user archive. This can be used without actually running import, e.g. when user wants to check the archive before import from the frontend. Validators may add messages and modify the archive. Validators are separated in two types: critical validators and non-critical validators. If validations by critical validators fail it means we can't import archive. If non-critical validations fail, we can import archive, but some warning messages are rendered. Also validators may change archive contents, e.g. when some entity can't be imported it may be removed from the archive. Validators' job is to take away complexity from the importer and perform the validations which are not implemented in other parts of the system, e.g. DB validations or diaspora_federation entity validations. Archive importer then takes the modified archive from the validator and imports it. In order to incapsulate high-level migration logic a MigrationService is introduced. MigrationService links ArchiveValidator, ArchiveImporter and AccountMigration. Also here is introduced a rake task which may be used by podmins to run archive import.
76 lines
1.9 KiB
Ruby
76 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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class MigrationService
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attr_reader :archive_path, :new_user_name
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delegate :errors, :warnings, to: :archive_validator
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def initialize(archive_path, new_user_name)
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@archive_path = archive_path
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@new_user_name = new_user_name
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end
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def validate
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archive_validator.validate
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raise ArchiveValidationFailed, errors.join("\n") if errors.any?
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raise MigrationAlreadyExists if AccountMigration.where(old_person: old_person).any?
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end
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def perform!
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find_or_create_user
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import_archive
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run_migration
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end
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# when old person can't be resolved we still import data but we don't create&perform AccountMigration instance
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def only_import?
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old_person.nil?
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end
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private
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def find_or_create_user
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archive_importer.user = User.find_by(username: new_user_name)
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archive_importer.create_user(username: new_user_name, password: SecureRandom.hex) if archive_importer.user.nil?
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end
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def import_archive
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archive_importer.import
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end
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def run_migration
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account_migration.save
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account_migration.perform!
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end
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def account_migration
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@account_migration ||= AccountMigration.new(
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old_person: old_person,
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new_person: archive_importer.user.person,
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old_private_key: archive_importer.serialized_private_key,
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old_person_diaspora_id: archive_importer.archive_author_diaspora_id
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)
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end
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def old_person
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@old_person ||= Person.by_account_identifier(archive_validator.archive_author_diaspora_id)
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end
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def archive_importer
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@archive_importer ||= ArchiveImporter.new(archive_validator.archive_hash)
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end
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def archive_validator
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@archive_validator ||= ArchiveValidator.new(archive_file)
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end
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def archive_file
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# TODO: archive is likely to be a .json.gz file
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File.new(archive_path, "r")
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end
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class ArchiveValidationFailed < RuntimeError
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end
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class MigrationAlreadyExists < RuntimeError
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end
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end
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