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module Gitlab
module Kubernetes
class Helm::Pod
def initialize(command, namespace_name, kubeclient)
@command = command
@namespace_name = namespace_name
@kubeclient = kubeclient
end
def generate
spec = { containers: [container_specification], restartPolicy: 'Never' }
if command.chart_values_file
generate_config_map
spec['volumes'] = volumes_specification
end
::Kubeclient::Resource.new(metadata: metadata, spec: spec)
end
private
attr_reader :command, :namespace_name, :kubeclient
def container_specification
container = {
name: 'helm',
image: 'alpine:3.6',
env: generate_pod_env(command),
command: %w(/bin/sh),
args: %w(-c $(COMMAND_SCRIPT))
}
container[:volumeMounts] = volume_mounts_specification if command.chart_values_file
container
end
def labels
{ 'gitlab.org/action': 'install', 'gitlab.org/application': command.name }
end
def metadata
{ name: command.pod_name, namespace: namespace_name, labels: labels }
end
def volume_mounts_specification
[{ name: 'config-volume', mountPath: '/etc/config' }]
end
def volumes_specification
[{ name: 'config-volume', configMap: { name: 'values-config' } }]
end
def generate_pod_env(command)
{
HELM_VERSION: Gitlab::Kubernetes::Helm::HELM_VERSION,
TILLER_NAMESPACE: namespace_name,
COMMAND_SCRIPT: command.generate_script(namespace_name)
}.map { |key, value| { name: key, value: value } }
end
def generate_config_map
resource = ::Kubeclient::Resource.new
resource.metadata = { name: 'values-config', namespace: namespace_name }
resource.data = YAML.load_file(command.chart_values_file)
kubeclient.create_config_map(resource)
end
end
end
end
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