Class: Kubeclient::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/kubeclient/config.rb

Overview

Kubernetes client configuration class

Defined Under Namespace

Classes: Context

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data, kcfg_path) ⇒ Config

data (Hash) - Parsed kubeconfig data. kcfg_path (string) - Base directory for resolving relative references to external files.

If set to nil, all external lookups & commands are disabled (even for absolute paths).

See also the more convenient Config.read



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# File 'lib/kubeclient/config.rb', line 25

def initialize(data, kcfg_path)
  @kcfg = data
  @kcfg_path = kcfg_path
  raise 'Unknown kubeconfig version' if @kcfg['apiVersion'] != 'v1'
end

Class Method Details

.read(filename) ⇒ Object

Builds Config instance by parsing given file, with lookups relative to file’s directory.



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# File 'lib/kubeclient/config.rb', line 32

def self.read(filename)
  parsed =
    if RUBY_VERSION >= '2.6'
      YAML.safe_load(File.read(filename), permitted_classes: [Date, Time])
    else
      YAML.safe_load(File.read(filename), [Date, Time])
    end
  Config.new(parsed, File.dirname(filename))
end

Instance Method Details

#context(context_name = nil) ⇒ Object 



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# File 'lib/kubeclient/config.rb', line 46

def context(context_name = nil)
  cluster, user, namespace = fetch_context(context_name || @kcfg['current-context'])

  if user.key?('exec')
    exec_opts = expand_command_option(user['exec'], 'command')
    user['exec_result'] = ExecCredentials.run(exec_opts)
  end

  client_cert_data = fetch_user_cert_data(user)
  client_key_data  = fetch_user_key_data(user)
  auth_options     = fetch_user_auth_options(user)

  ssl_options = {}

  ssl_options[:verify_ssl] = if cluster['insecure-skip-tls-verify'] == true
                               OpenSSL::SSL::VERIFY_NONE
                             else
                               OpenSSL::SSL::VERIFY_PEER
                             end

  if cluster_ca_data?(cluster)
    cert_store = OpenSSL::X509::Store.new
    populate_cert_store_from_cluster_ca_data(cluster, cert_store)
    ssl_options[:cert_store] = cert_store
  end

  unless client_cert_data.nil?
    ssl_options[:client_cert] = OpenSSL::X509::Certificate.new(client_cert_data)
  end

  unless client_key_data.nil?
    ssl_options[:client_key] = OpenSSL::PKey.read(client_key_data)
  end

  Context.new(cluster['server'], @kcfg['apiVersion'], ssl_options, auth_options, namespace)
end

#contexts ⇒ Object 



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# File 'lib/kubeclient/config.rb', line 42

def contexts
  @kcfg['contexts'].map { |x| x['name'] }
end