module Resque::Plugin

def after_dequeue_hooks(job)

Given an object, returns a list `after_dequeue` hook names. 
def after_dequeue_hooks(job)
  get_hook_names(job, 'after_dequeue')
end

def after_enqueue_hooks(job)

Given an object, returns a list `after_enqueue` hook names. 
def after_enqueue_hooks(job)
  get_hook_names(job, 'after_enqueue')
end

def after_hooks(job)

Given an object, returns a list `after_perform` hook names. 
def after_hooks(job)
  get_hook_names(job, 'after_perform')
end

def around_hooks(job)

Given an object, returns a list `around_perform` hook names. 
def around_hooks(job)
  get_hook_names(job, 'around_perform')
end

def before_dequeue_hooks(job)

Given an object, returns a list `before_dequeue` hook names. 
def before_dequeue_hooks(job)
  get_hook_names(job, 'before_dequeue')
end

def before_enqueue_hooks(job)

Given an object, returns a list `before_enqueue` hook names. 
def before_enqueue_hooks(job)
  get_hook_names(job, 'before_enqueue')
end

def before_hooks(job)

Given an object, returns a list `before_perform` hook names. 
def before_hooks(job)
  get_hook_names(job, 'before_perform')
end

def failure_hooks(job)

Given an object, returns a list `on_failure` hook names. 
def failure_hooks(job)
  get_hook_names(job, 'on_failure')
end

def get_hook_names(job, hook_method_prefix)

with that name (hook names).
Given an object, and a method prefix, returns a list of methods prefixed 
def get_hook_names(job, hook_method_prefix)
  methods = (job.respond_to?(:hooks) && job.hooks) || job_methods(job)
  methods.select{|m| m.start_with?(hook_method_prefix)}.sort
end

def job_methods(job) 

def job_methods(job)
  @job_methods[job] ||= job.methods.collect{|m| m.to_s}
end

def lint(plugin)

Resque::Plugin.lint(MyResquePlugin)

Ensure that your plugin conforms to good hook naming conventions. 
def lint(plugin)
  hooks = before_hooks(plugin) + around_hooks(plugin) + after_hooks(plugin)
  hooks.each do |hook|
    if hook.to_s.end_with?("perform")
      raise LintError, "#{plugin}.#{hook} is not namespaced"
    end
  end
  failure_hooks(plugin).each do |hook|
    if hook.to_s.end_with?("failure")
      raise LintError, "#{plugin}.#{hook} is not namespaced"
    end
  end
end