Module: KubeclientExec::Execute

Included in:
KubeclientExec
Defined in:
lib/kubeclient_exec/execute/execute.rb,
lib/kubeclient_exec/execute/executor.rb

Defined Under Namespace

Classes: Executor

Constant Summary collapse

DEFAULT_EXEC_OPTIONS = 
{
  container: nil,
  stdin: true,
  stdout: true,
  stderror: true,
  tty: true,
  suppress_errors: false,
  tls: {
    cert_chain_file: nil,
    cert: nil,
    private_key_file: nil,
    private_key: nil,
    verify_peer: true
  }
}

Instance Method Summary collapse

Instance Method Details

#exec_pod(command, name, namespace, options: {}, &block) ⇒ Object 



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# File 'lib/kubeclient_exec/execute/execute.rb', line 23

def exec_pod(command, name, namespace, options: {}, &block)
  ns_prefix = build_namespace_prefix(namespace)
  client = rest_client["#{ns_prefix}pods/#{name}/exec"]
  url = URI.parse(client.url)

  # Reverse merge with the default options
  options.merge!(Execute::DEFAULT_EXEC_OPTIONS) { |_, option, _| option }

  kubeclient_options = { headers: @headers, tls: options[:tls] }

  url.query = (options.filter { |k| ![:suppress_errors, :tls].include?(k) }.compact.map { |k, v| "#{k}=#{v}"} << command.split(' ').map { |c| "command=#{c}"}).join('&')

  if url.to_s.start_with?('https')
    url = "wss" + url.to_s[5..-1]
  end

  last_output = { last_stdout: nil, last_stderr: nil }

  EM.run do
    executor = if block_given?
        Executor.new(command, url, kubeclient_options, options) do |executor|
          block.call(executor)
        end
    else
        Executor.new(command, url, kubeclient_options, options.merge!(mode: :adhoc))
    end

    EM.add_shutdown_hook do
      last_output[:last_stdout] = executor.last_stdout
      last_output[:last_stderr] = executor.last_stderr
    end
  end

  last_output
end