Class: Jets::Application

Inherits:
Object
  • Object
show all
Extended by:
Memoist
Includes:
Defaults, Middleware, Singleton
Defined in:
lib/jets/application.rb,
lib/jets/application/defaults.rb

Defined Under Namespace

Modules: Defaults

Constant Summary collapse

ENV_MAP =

Use the shorter name in stack names, but use the full name when it comes to checking for the env.

Example:

Jets.env: 'development'
Jets.config.project_namespace: 'demo-dev'

{
  development: 'dev',
  production: 'prod',
  staging: 'stag',
}

Instance Method Summary collapse

Methods included from Defaults

#default_autoload_paths, #default_config, #default_ignore_paths

Methods included from Middleware

#build_stack, #call, #config_middleware, #default_stack, #endpoint, #middlewares

Instance Method Details

#aws ⇒ Object 



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# File 'lib/jets/application.rb', line 228

def aws
  Jets::AwsInfo.new
end

#config ⇒ Object 



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# File 'lib/jets/application.rb', line 52

def config
  @config ||= ActiveSupport::OrderedOptions.new # dont use memoize since we reset @config later
end

#configs! ⇒ Object 



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# File 'lib/jets/application.rb', line 21

def configs!
  load_environments_config
  load_db_config
  set_iam_policy # relies on dependent values, must be called afterwards
  normalize_env_vars!
end

#configure(&block) ⇒ Object 



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# File 'lib/jets/application.rb', line 10

def configure(&block)
  instance_eval(&block) if block
end

#deprecated_configs_message ⇒ Object 



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# File 'lib/jets/application.rb', line 92

def deprecated_configs_message
  unless config.ruby.lazy_load.nil?
    puts "Detected config.ruby.lazy_load = #{config.ruby.lazy_load.inspect}".color(:yellow)
    puts "Deprecated: config.ruby.lazy_load".color(:yellow)
    puts "Gems are now bundled with with Lambda Layer and there's no need to lazy load them."
    puts "Please remove the config in your config/application.rb or config/environments files."
    puts "You can have Jets automatically do this by running:"
    puts "  jets upgrade"
  end
end

#each_app_autoload_path(expression) ⇒ Object 



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# File 'lib/jets/application.rb', line 128

def each_app_autoload_path(expression)
  Dir.glob(expression).each do |p|
    p.sub!('./','')
    yield(p) unless exclude_autoload_path?(p)
  end
end

#exclude_autoload_path?(path) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jets/application.rb', line 135

def exclude_autoload_path?(path)
  path =~ %r{app/javascript} ||
  path =~ %r{app/views} ||
  path =~ %r{/functions} # app and shared
end

#finish! ⇒ Object 



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# File 'lib/jets/application.rb', line 37

def finish!
  deprecated_configs_message
  load_inflections
  load_routes

  Jets::Controller::Rendering::RackRenderer.setup! # Sets up ActionView etc
  # Load libraries at the end to trigger onload so we can defined options in any order.
  # Only action_mailer library have been used properly this way so far.
  require 'action_mailer'
end

#internal_autoload_paths ⇒ Object 



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# File 'lib/jets/application.rb', line 141

def internal_autoload_paths
  internal = File.expand_path("../internal", __FILE__)
  paths = %w[
    app/controllers
    app/helpers
    app/jobs
    app/models
  ]
  paths.map { |path| "#{internal}/#{path}" }
end

#load_config_application ⇒ Object 



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# File 'lib/jets/application.rb', line 79

def load_config_application
  app_config = "#{Jets.root}/config/application.rb"
  load app_config # use load instead of require so reload_configs! works
end

#load_db_config(database_yml = "#{Jets.root}/config/database.yml") ⇒ Object 



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# File 'lib/jets/application.rb', line 194

def load_db_config(database_yml="#{Jets.root}/config/database.yml")
  config.database = {}

  Jets::Dotenv.load!
  if File.exist?(database_yml)
    require "active_record/database_configurations" # lazy require
    text = Jets::Erb.result(database_yml)
    db_configs = YAML.load(text)
    configurations = ActiveRecord::DatabaseConfigurations.new(db_configs)
    config.database = configurations
  end
end

#load_default_config ⇒ Object 



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# File 'lib/jets/application.rb', line 71

def load_default_config
  @config = default_config # sets Jets.config.project_name by calling parse_project_name
  set_computed_configs! # things like project_namespace that need project_name
  Jets::Dotenv.load! # needs Jets.config.project_name when using ssm in dotenv files
  Jets.config.project_name = parse_project_name # Must set again because JETS_PROJECT_NAME is possible
  load_config_application # this overwrites Jets.config.project_name
end

#load_environments_config ⇒ Object 



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# File 'lib/jets/application.rb', line 84

def load_environments_config
  env_file = "#{Jets.root}/config/environments/#{Jets.env}.rb"
  if File.exist?(env_file)
    code = IO.read(env_file)
    instance_eval(code, env_file)
  end
end

#load_inflections ⇒ Object 



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# File 'lib/jets/application.rb', line 48

def load_inflections
  Jets::Inflections.load!
end

#load_routes(refresh: false) ⇒ Object 



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# File 'lib/jets/application.rb', line 216

def load_routes(refresh: false)
  @router = nil if refresh # clear_routes

  routes_file = "#{Jets.root}/config/routes.rb"
  return unless File.exist?(routes_file)
  if refresh
    load routes_file # always evaluate
  else
    require routes_file # evaluate once
  end
end

#main_loader ⇒ Object 



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# File 'lib/jets/application.rb', line 103

def main_loader
  Jets::Autoloaders.main
end

#main_loader_setup ⇒ Object 



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# File 'lib/jets/application.rb', line 123

def main_loader_setup
  main_loader.enable_reloading if Jets.env.development?
  main_loader.setup # only respected on the first call
end

#normalize_env_vars! ⇒ Object

It is pretty easy to attempt to set environment variables without the correct AWS Environment.Variables path struture. Auto-fix it for convenience.



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# File 'lib/jets/application.rb', line 185

def normalize_env_vars!
  environment = config.function.environment
  if environment and !environment.to_h.key?(:variables)
    config.function.environment = {
      variables: environment.to_h
    }
  end
end

#parse_project_name ⇒ Object

Double evaling config/application.rb causes subtle issues:

* double loading of shared resources: Jets::Stack.subclasses will have the same
class twice when config is called when declaring a function
* forces us to rescue all exceptions, which is a big hammer

Lets parse for the project name instead for now.



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# File 'lib/jets/application.rb', line 63

def parse_project_name
  return ENV['JETS_PROJECT_NAME'] if ENV['JETS_PROJECT_NAME'] # override

  lines = IO.readlines("#{Jets.root}/config/application.rb")
  project_name_line = lines.find { |l| l =~ /config\.project_name.*=/ }
  project_name_line.gsub(/.*=/,'').strip.gsub(/["']/,'') # project_name
end

#reload_configs! ⇒ Object

After the mimimal template gets build, we need to reload it for the full stack creation. This allows us to reference IAM policies configs that depend on the creation of the s3 bucket.



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# File 'lib/jets/application.rb', line 31

def reload_configs!
  # Tricky: reset only the things that depends on the minimal stack
  @config.iam_policy = nil
  configs!
end

#routes ⇒ Object

Naming it routes because config/routes.rb requires

Jets.application.routes.draw do

for scaffolding to work.



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# File 'lib/jets/application.rb', line 212

def routes
  @router ||= Jets::Router.new
end

#set_computed_configs! ⇒ Object 



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# File 'lib/jets/application.rb', line 164

def set_computed_configs!
  # env_extra can be also be set with JETS_ENV_EXTRA.
  # JETS_ENV_EXTRA higher precedence than config.env_extra
  config.env_extra = ENV['JETS_ENV_EXTRA'] if ENV['JETS_ENV_EXTRA']
  # IE: With env_extra: project-dev-1
  #     Without env_extra: project-dev
  config.short_env = ENV_MAP[Jets.env.to_sym] || Jets.env
  # table_namespace does not have the env_extra, more common case desired.
  config.table_namespace = [config.project_name, config.short_env].compact.join('-')

  config.project_namespace = Jets.project_namespace
end

#set_iam_policy ⇒ Object 



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# File 'lib/jets/application.rb', line 177

def set_iam_policy
  config.iam_policy ||= self.class.default_iam_policy
  config.managed_policy_definitions ||= [] # default empty
end

#setup! ⇒ Object 



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# File 'lib/jets/application.rb', line 14

def setup!
  load_default_config
  setup_autoload_paths
  setup_ignore_paths
  main_loader_setup
end

#setup_autoload_paths ⇒ Object 



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# File 'lib/jets/application.rb', line 107

def setup_autoload_paths
  autoload_paths = default_autoload_paths + config.autoload_paths
  autoload_paths.each do |path|
    next unless File.exist?(path)
    main_loader.push_dir(path)
  end
end

#setup_ignore_paths ⇒ Object

Allow use to add config.ignore_paths just in case there’s some case Jets hasn’t considered



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# File 'lib/jets/application.rb', line 116

def setup_ignore_paths
  ignore_paths = default_ignore_paths + config.ignore_paths
  ignore_paths.each do |path|
    main_loader.ignore("#{Jets.root}/#{path}")
  end
end