Class: OnlineMigrations::BackgroundMigrations::MigrationJobRunner

Inherits:
Object
  • Object
show all
Defined in:
lib/online_migrations/background_migrations/migration_job_runner.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(migration_job) ⇒ MigrationJobRunner

Returns a new instance of MigrationJobRunner.



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# File 'lib/online_migrations/background_migrations/migration_job_runner.rb', line 12

def initialize(migration_job)
  @migration_job = migration_job
end

Instance Attribute Details

#migration_job ⇒ Object (readonly)

Returns the value of attribute migration_job.



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# File 'lib/online_migrations/background_migrations/migration_job_runner.rb', line 7

def migration_job
  @migration_job
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/online_migrations/background_migrations/migration_job_runner.rb', line 16

def run
  job_payload = { background_migration_job: migration_job }
  if migration_job.attempts >= 1
    ActiveSupport::Notifications.instrument("retried.background_migrations", job_payload)
  end

  migration_job.update!(
    attempts: attempts + 1,
    status: :running,
    started_at: Time.current,
    finished_at: nil,
    error_class: nil,
    error_message: nil,
    backtrace: nil
  )

  ActiveSupport::Notifications.instrument("process_batch.background_migrations", job_payload) do
    migration.on_shard { run_batch }
  end

  migration_job.update!(status: :succeeded, finished_at: Time.current)
rescue Exception => e # rubocop:disable Lint/RescueException
  backtrace_cleaner = ::OnlineMigrations.config.backtrace_cleaner

  migration_job.update!(
    status: :failed,
    finished_at: Time.current,
    error_class: e.class.name,
    error_message: e.message,
    backtrace: backtrace_cleaner ? backtrace_cleaner.clean(e.backtrace) : e.backtrace
  )

  ::OnlineMigrations.config.background_migrations.error_handler.call(e, migration_job)
  raise if Utils.run_background_migrations_inline?
end