v0.16.0

This release brings a major new feature, hook tasks. A hook task is any stateless process (e.g. a Linux shell command) that can be run synchronously with the environment state machine, in response to an event and/or as a condition for completing a transition. It also adds support for disabling portions of the workflow tree when creating an environment, some user interface improvements in coconut, as well as support for the O² Configuration library in the OCC library.

• Support for hook tasks:

  • [common] controlmode.String should not have ptr receiver
  • [core] New MesosCommand_TriggerHook
  • [core] Support for loading hook definitions from workflow template
  • [core] MesosCommand_TriggerHook handling
  • [core] task.Manager.TriggerHook implementation
  • [core] Tie hooks to environment state machine triggers
  • [core] Better error output on failed MesosCommandResponse
  • [core] Fix timeout representation
  • [core] Improve commandqueue error handling
  • [core] Timeout support in task.Task
  • [core] Improve error output, controlmode representation, GetRoles lock
  • [core] Handle hooks in scheduler
  • [core] Hook timeout support and hook handling fixes in environment
  • [executor] New HookTask + BasicTask refactor
  • [executor] MesosCommand_TriggerHook handling
  • [executor] Refactor taskCmd lifetime for basic+hooks
  • [executor] Add basic/hook task timeout support via context
  • [executor] Implement triggering of hook tasks

• Support for launch-time role disabling:

  • [core] Add support for enabling/disabling roles at deployment time
  • [core] Make iteratorRange/iteratorRole copyable

• coconut interface improvements:

  • [coconut] Accept lowercase event names as well as short start/stop
  • [coconut] Support for --nospinner flag

• Configuration library support in OCC library:

  • [occ] Fill configuration ptree with local file
  • [occ][OCTRL-295] Improve code documentation of PR#156