Hi! I just forgot to ask about the best way for discussion: what will it be? We have an IRC channel #murano at FreeNode, so you can find someone from our team here. The best way probably will be a Google hangout or Webex meeting for a live discussion and document sharing.
On Wed, Oct 9, 2013 at 12:44 AM, Timur Sufiev <tsuf...@mirantis.com> wrote: > Hello! > > > I am an engineer from Murano team. Murano is an OpenStack project built > around Windows components deployment. Currently we (Murano team) are > working on improving Murano architecture to fit better in OpenStack > ecosystem and reuse more functionality from the other projects. As part of > that we’ve realized that we need task execution workflow. We see a lot of > value in Convection proposal for what we need as well as OpenStack users in > general. > > * > * > > We have some ideas around possible design approach as well as bits and > pieces that we can potentially reuse from the existing codebase. We would > like to start contributing to Convection and get it moving forward. As the > first step it would be good to start a discussion with you on how to unify > our vision and start the development. > > * > * > > Here are some of the areas that we would like to discuss: > > - > > Workflow definition proposal. We propose YAML as a task workflow > definition format. Each node in the workflow has state, dependencies and an > action associated with it. Action is defined as a generic instruction to > call some other component using a specific transport (e.g. RabbitMQ). > Dependency means “in order to execute this task it is required that some > other tasks be in a certain state”. > - > > Workflow definitions API proposal. We are discussing and prototyping > an API for uploading workflow definitions, modifying them, adding the > sources triggering new tasks to be scheduled for execution and so forth. We > propose to adapt this API to Convection needs and possible rewrite and > extend it. > - > > Task dependencies resolution engine proposal. We already have a > generic engine which processes workflows. It is essentially a parallel > multithreaded state machine. We propose to use this engine as a basis for > Convection and extend it by adding external event sources like timers and > Ceilometer alarms. > > > -- > Timur Sufiev > -- Timur Sufiev
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