Class: OsCtld::ContainerControl::Commands::Exec::Frontend

Inherits:
Frontend
  • Object
show all
Includes:
Utils::Runscript::Frontend
Defined in:
lib/osctld/container_control/commands/exec.rb

Constant Summary

Constants included from Utils::Runscript::Frontend

Utils::Runscript::Frontend::TRANSIENT_CLEANUP_TIMEOUT

Constants inherited from Frontend

Frontend::FAILED_RUNNER_GRACE

Instance Attribute Summary

Attributes inherited from Frontend

#command_class, #ct

Instance Method Summary collapse

Methods included from Utils::Runscript::Frontend

#add_network_opts, #cleanup_init_script, #init_script, #runscript_mode, #sync_state_after_transient_run, #unlink_file

Methods inherited from Frontend

#cleanup_runner_cgroup, #exec_runner, #fork_runner, #initialize, #reap_failed_runner, #runner_result, #write_runner_failure

Constructor Details

This class inherits a constructor from OsCtld::ContainerControl::Frontend

Instance Method Details

#execute(opts) ⇒ Integer

Returns exit status.

Parameters:

  • opts (Hash)

Options Hash (opts):

  • :cmd (Array<String>) —

    command to execute

  • :stdin (IO)
  • :stdout (IO)
  • :stderr (IO)
  • :run (Boolean) —

    run the container if it is stopped?

  • :network (Boolean) —

    setup network if the container is run?

Returns:

  • (Integer) —

    exit status



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# File 'lib/osctld/container_control/commands/exec.rb', line 26

def execute(opts)
  runner_opts = {
    cmd: opts[:cmd]
  }

  mode = runscript_mode(run: opts[:run], network: opts[:network])

  if opts[:network]
    add_network_opts(runner_opts)
  end

  if %i[run run_network].include?(mode)
    ct.ensure_run_conf

    # Remove any left-over temporary mounts
    ct.mounts.prune

    # Pre-start distconfig hook
    DistConfig.run(ct.run_conf, :pre_start)
  end

  ret = exec_runner(
    args: [mode, runner_opts],
    stdin: opts[:stdin],
    stdout: opts[:stdout],
    stderr: opts[:stderr],
    switch_extra_namespaces: mode != :running,
    transient_network: mode == :run_network,
    reset_subtree_control: mode != :running
  )

  ret.ok? ? ret.data : ret
ensure
  begin
    sync_state_after_transient_run(mode) if mode
  ensure
    cleanup_init_script
  end
end