ActiveSupport::Executor example

active_support-executor-example.rb

require "active_support/executor"
require "active_record"
require "pg"

ActiveRecord::Base.establish_connection(
  uri: "postgres:///",
  adapter: :postgresql,
  pool: 5,
)

# Just happens to map to a table this DB
class Task < ActiveRecord::Base
end

# Executed on completion of any `Executor.wrap` block
ActiveSupport::Executor.to_complete do
  # Release this thread's connection back to the pool
  ActiveRecord::Base.connection_pool.release_connection
end

# Wrap your app code in this block, for example in Rack middleware
ActiveSupport::Executor.wrap { Task.first }

# The connection's owner should be `nil`
pp ActiveRecord::Base.connection_pool.connections.first.owner