Class: KubernetesDeploy::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/kubernetes-deploy/runner.rb

Constant Summary collapse

PREDEPLOY_SEQUENCE = 
%w(
  Cloudsql
  Redis
  ConfigMap
  PersistentVolumeClaim
  Pod
)
PROTECTED_NAMESPACES = 
%w(
  default
  kube-system
)
PRUNE_WHITELIST =

Things removed from default prune whitelist: core/v1/Namespace – not namespaced core/v1/PersistentVolume – not namespaced core/v1/Endpoints – managed by services core/v1/PersistentVolumeClaim – would delete data core/v1/ReplicationController – superseded by deployments/replicasets extensions/v1beta1/ReplicaSet – managed by deployments core/v1/Secret – should not committed / managed by shipit

%w(
  core/v1/ConfigMap
  core/v1/Pod
  core/v1/Service
  batch/v1/Job
  extensions/v1beta1/DaemonSet
  extensions/v1beta1/Deployment
  extensions/v1beta1/HorizontalPodAutoscaler
  extensions/v1beta1/Ingress
  apps/v1beta1/StatefulSet
).freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(namespace:, current_sha:, context:, wait_for_completion:, template_dir:) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/kubernetes-deploy/runner.rb', line 66

def initialize(namespace:, current_sha:, context:, wait_for_completion:, template_dir:)
  @namespace = namespace
  @context = context
  @current_sha = current_sha
  @template_dir = File.expand_path(template_dir)
  # Max length of podname is only 63chars so try to save some room by truncating sha to 8 chars
  @id = current_sha[0...8] + "-#{SecureRandom.hex(4)}" if current_sha
  @wait_for_completion = wait_for_completion
end

Class Method Details

.with_friendly_errors ⇒ Object 



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# File 'lib/kubernetes-deploy/runner.rb', line 56

def self.with_friendly_errors
  yield
rescue FatalDeploymentError => error
  KubernetesDeploy.logger.fatal <<-MSG
#{error.class}: #{error.message}
  #{error.backtrace && error.backtrace.join("\n  ")}
MSG
  exit 1
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/kubernetes-deploy/runner.rb', line 80

def run
  @current_phase = 0
  phase_heading("Validating configuration")
  validate_configuration

  phase_heading("Identifying deployment target")
  confirm_context_exists
  confirm_namespace_exists

  phase_heading("Parsing deploy content")
  resources = discover_resources

  phase_heading("Checking initial resource statuses")
  resources.each(&:sync)

  phase_heading("Predeploying priority resources")
  predeploy_priority_resources(resources)

  phase_heading("Deploying all resources")
  deploy_resources(resources, prune: true)

  return unless wait_for_completion?
  wait_for_completion(resources)
  report_final_status(resources)
end

#template_variables ⇒ Object 



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# File 'lib/kubernetes-deploy/runner.rb', line 106

def template_variables
  {
    'current_sha' => @current_sha,
    'deployment_id' => @id,
  }
end

#wait_for_completion? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kubernetes-deploy/runner.rb', line 76

def wait_for_completion?
  @wait_for_completion
end