Class: PicsolveDockerBuilder::Composer::Composer

Inherits:
Object
  • Object
show all
Includes:
Base
Defined in:
lib/picsolve_docker_builder/composer/composer.rb

Overview

The composer parses a docker-compose.yml and tries to spin up the containers in a kubernetes cluster

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Base

#config, #config_file, #config_path, #config_paths, #create_logger, #log, #read_config, #validate_config

Constructor Details

#initialize ⇒ Composer

Returns a new instance of Composer.



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 17

def initialize
end

Instance Attribute Details

#stage ⇒ Object

Returns the value of attribute stage.



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 15

def stage
  @stage
end

Instance Method Details

#app_name ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 28

def app_name
  config['compose']['app_name'].downcase.gsub(/[^a-z0-9\-]/, '-')
end

#base_dir ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 108

def base_dir
  Dir.pwd
end

#cleanup ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 58

def cleanup
  kubernetes_clusters.each do |cluster|
    begin
      log.info "Cleanup kubernetes cluster #{cluster.host}"
      cluster.cleanup
    end
  end
end

#default_config ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 40

def default_config
  { 'compose' => {} }
end

#deploy ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 67

def deploy
  errors = 0
  kubernetes_clusters.each do |cluster|
    begin
      log.info "Deploy to kubernetes cluster #{cluster.host}"
      cluster.deploy
      cluster.stop
    rescue StandardError => e
      errors += 1
      log.error "Failed deployment to kubernetes cluster: #{e}"
      e.backtrace.each do |line|
        log.error line
      end
    end
  end
  fail 'deployment to at least one cluster failed' if errors > 0
end

#docker_compose ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 104

def docker_compose
  @docker_compose ||= read_docker_compose
end

#docker_compose_path ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 112

def docker_compose_path
  File.join(base_dir, 'docker-compose.yml')
end

#hash ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 36

def hash
  @hash ||= SecureRandom.hex[0..7]
end

#images ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 44

def images
  @images ||= read_images
end

#kubernetes_clusters ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 48

def kubernetes_clusters
  config['compose']['clusters'].map do |cluster|
    PicsolveDockerBuilder::Helpers::KubernetesManager.new(
      self,
      cluster,
      :ssh_forward, # TODO: support other types here
    )
  end
end

#namespace ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 32

def namespace
  "#{app_name}-#{stage}".downcase
end

#prepare ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 20

def prepare
  images
end

#query_registry ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 124

def query_registry
end

#read_docker_compose ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 116

def read_docker_compose
  path = docker_compose_path
  Psych.load_file path
rescue Errno::ENOENT
  log.debug "can not find docker-compose.yml at '#{path}'"
  nil
end

#read_images ⇒ Object 



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# File 'lib/picsolve_docker_builder/composer/composer.rb', line 85

def read_images
  # classic config
  containers = docker_compose
  unless containers.nil?
    i = []
    containers.each do |name, config|
      i << Container.new(name, config, self)
    end
    return i
  end

  # new approach to handle config
  c = PicsolveDockerBuilder::Helpers::ConfigManager.new(
    config_paths,
    stage
  )
  c.containers(self)
end