Class: Kuby::Plugins::RailsApp::Assets

Inherits:
Kuby::Plugin show all
Extended by:
KubeDSL::ValueFields
Defined in:
lib/kuby/plugins/rails_app/assets.rb

Constant Summary collapse

ROLE = 
'assets'.freeze
NGINX_IMAGE = 
'nginx:1.9-alpine'.freeze
NGINX_PORT = 
8082
NGINX_MOUNT_PATH = 
'/usr/share/nginx/assets'.freeze
RAILS_MOUNT_PATH = 
'/usr/share/assets'.freeze

Instance Attribute Summary

Attributes inherited from Kuby::Plugin

#environment

Instance Method Summary collapse

Methods inherited from Kuby::Plugin

#after_configuration, #after_deploy, #after_setup, #before_deploy, #before_setup, dependencies, depends_on, #initialize, #remove, #setup, task_dirs

Constructor Details

This class inherits a constructor from Kuby::Plugin

Instance Method Details

#configure(&block) ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 18

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

#configure_ingress(ingress, hostname) ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 22

def configure_ingress(ingress, hostname)
  spec = self

  ingress.spec.rule do
    host hostname

    http do
      path do
        path spec.asset_url
        path_type 'Prefix'

        backend do
          service do
            name spec.service.metadata.name

            port do
              name spec.service.spec.ports.first.name
            end
          end
        end
      end

      path do
        path spec.packs_url
        path_type 'Prefix'

        backend do
          service do
            name spec.service.metadata.name

            port do
              name spec.service.spec.ports.first.name
            end
          end
        end
      end
    end
  end
end

#copy_task ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 62

def copy_task
  @copy_task ||= AssetCopyTask.new(
    from: asset_path, to: RAILS_MOUNT_PATH
  )
end

#deployment(&block) ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 176

def deployment(&block)
  kube_spec = self

  @deployment ||= KubeDSL.deployment do
    metadata do
      name "#{kube_spec.selector_app}-#{kube_spec.role}"
      namespace kube_spec.namespace.metadata.name

      labels do
        add :app, kube_spec.selector_app
        add :role, kube_spec.role
      end
    end

    spec do
      replicas 1

      selector do
        match_labels do
          add :app, kube_spec.selector_app
          add :role, kube_spec.role
        end
      end

      strategy do
        type 'RollingUpdate'

        rolling_update do
          max_surge '25%'
          max_unavailable 0
        end
      end

      template do
        metadata do
          labels do
            add :app, kube_spec.selector_app
            add :role, kube_spec.role
          end
        end

        spec do
          container(:nginx) do
            name "#{kube_spec.selector_app}-#{kube_spec.role}"
            image_pull_policy 'IfNotPresent'
            image "#{kube_spec.image.image_url}:#{kube_spec.kubernetes.tag || Kuby::Docker::LATEST_TAG}-assets"

            port do
              container_port NGINX_PORT
              name 'http'
              protocol 'TCP'
            end

            volume_mount do
              name 'nginx-config'
              mount_path '/etc/nginx/nginx.conf'
              sub_path 'nginx.conf'
            end

            readiness_probe do
              success_threshold 1
              failure_threshold 2
              initial_delay_seconds 5
              period_seconds 3
              timeout_seconds 1

              http_get do
                path '/500.html'
                port NGINX_PORT
                scheme 'HTTP'
              end
            end
          end

          image_pull_secret do
            name kube_spec.environment.kubernetes.registry_secret.metadata.name
          end

          volume do
            name 'nginx-config'

            config_map do
              name kube_spec.nginx_config.metadata.name
            end
          end

          restart_policy 'Always'
           kube_spec..metadata.name
        end
      end
    end
  end

  @deployment.instance_eval(&block) if block
  @deployment
end

#docker ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 298

def docker
  environment.docker
end

#docker_images ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 282

def docker_images
  @docker_images ||= [docker_spec]
end

#image ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 310

def image
  @image ||= RailsApp::AssetsImage.new(docker.image, -> { dockerfile }, docker.image.registry_index_url)
end

#kubernetes ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 302

def kubernetes
  environment.kubernetes
end

#namespace ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 286

def namespace
  environment.kubernetes.namespace
end

#nginx_config(&block) ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 122

def nginx_config(&block)
  spec = self

  @nginx_config ||= KubeDSL.config_map do
    metadata do
      name "#{spec.selector_app}-#{spec.role}-nginx-config"
      namespace spec.namespace.metadata.name
    end

    data do
      add 'nginx.conf', <<~END
        user  nginx;
        worker_processes  1;

        error_log  /var/log/nginx/error.log warn;
        pid        /var/run/nginx.pid;

        events {
          worker_connections  1024;
        }

        http {
          include       /etc/nginx/mime.types;
          default_type  application/octet-stream;

          log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                            '$status $body_bytes_sent "$http_referer" '
                            '"$http_user_agent" "$http_x_forwarded_for"';

          access_log  /var/log/nginx/access.log  main;

          sendfile           on;
          keepalive_timeout  65;
          gzip               on;

          server {
            listen #{NGINX_PORT};
            server_name localhost;

            location / {
              root #{File.join(NGINX_MOUNT_PATH, 'current')};
            }

            error_page   500 502 503 504  /500.html;
          }
        }
      END
    end
  end

  @nginx_config.instance_eval(&block) if block
  @nginx_config
end

#resources ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 273

def resources
  @resources ||= [
    service,
    ,
    nginx_config,
    deployment
  ]
end

#role ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 294

def role
  ROLE
end

#selector_app ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 290

def selector_app
  environment.kubernetes.selector_app
end

#service(&block) ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 68

def service(&block)
  spec = self

  @service ||= KubeDSL.service do
    metadata do
      name "#{spec.selector_app}-#{spec.role}-svc"
      namespace spec.namespace.metadata.name

      labels do
        add :app, spec.selector_app
        add :role, spec.role
      end
    end

    spec do
      type 'NodePort'

      selector do
        add :app, spec.selector_app
        add :role, spec.role
      end

      port do
        name 'http'
        port NGINX_PORT
        protocol 'TCP'
        target_port 'http'
      end
    end
  end

  @service.instance_eval(&block) if block
  @service
end

#service_account(&block) ⇒ Object 



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# File 'lib/kuby/plugins/rails_app/assets.rb', line 103

def (&block)
  spec = self

  @service_account ||= KubeDSL. do
    metadata do
      name "#{spec.selector_app}-#{spec.role}-sa"
      namespace spec.namespace.metadata.name

      labels do
        add :app, spec.selector_app
        add :role, spec.role
      end
    end
  end

  @service_account.instance_eval(&block) if block
  @service_account
end