Class: ElasticBeans::Command::UnsetEnv

Inherits:
Object
  • Object
show all
Defined in:
lib/elastic_beans/command/unset_env.rb

Overview

:nodoc: all

Constant Summary collapse

USAGE = 
"unsetenv KEY [KEY]... | delvar | rmvar"
DESC = 
"Delete environment variables in the Elastic Beanstalk application"
LONG_DESC = 
<<-LONG_DESC
Delete environment variables in the Elastic Beanstalk application.
These are stored in S3 to avoid the 4096-byte limit on environment variables in Elastic Beanstalk.
Restarts all running environments so they load the updated environment vars.

Requires AWS credentials to be set in the environment, i.e. AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY.
LONG_DESC

Instance Method Summary collapse

Constructor Details

#initialize(application:, ui:) ⇒ UnsetEnv

Returns a new instance of UnsetEnv.



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# File 'lib/elastic_beans/command/unset_env.rb', line 18

def initialize(application:, ui:)
  @application = application
  @ui = ui
end

Instance Method Details

#run(*env_keys) ⇒ Object 



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# File 'lib/elastic_beans/command/unset_env.rb', line 23

def run(*env_keys)
  environments = application.environments
  unready_environments = environments.select { |environment| environment.status != "Ready" }
  if unready_environments.any?
    raise EnvironmentsNotReady.new(environments: unready_environments)
  end

  threads = []

  progressbar = ProgressBar.create(title: "Updating", total: nil, output: ui.stdout)

  Signal.trap("INT") do
    puts "\nInterrupting beans"
    puts "WARNING: Configuration update is partially applied, you should run this command again"
    raise Interrupt
  end
  Signal.trap("TERM") do
    puts "Terminating beans"
    puts "WARNING: Configuration update is partially applied, you should run this command again"
    raise SignalException.new("TERM")
  end

  progressbar.log("Updating configuration in #{application.name}...")
  application.env_vars.del(env_keys)
  progressbar.increment

  threads += environments.map { |environment|
    progressbar.log("Deleting env vars from `#{environment.name}'...")
    thread = Thread.new do
      environment.restart
    end
    progressbar.increment
    thread
  }

  loop do
    sleep 0.5
    progressbar.increment
    if threads.none?(&:alive?)
      progressbar.total = progressbar.progress
      break
    end
  end

  threads.each(&:join)
end