Thank you Oleg and Jesse for providing me useful details. I will try to get
started and get back to you soon with my ideas.
Pham Vu Tuan
On Wednesday, February 14, 2018 at 4:23:13 PM UTC+7, Oleg Nenashev wrote:
> Thanks for the interest!
> I will try to provide a detailed writeup about the project.
> Generally, the idea is to replace current communication layer by a pure
> message bus implementation. Below you can find some things from the top of
> my head:
> - All communications between master and agent happen over the message
> - Jenkins agents and masters can connect to a message bus.
> - The topology is TBD, it may be either embedded message bus
> (Jenkins master as a host) or an external service. The latter one is
> preferable IMHO
> - Jenkins agents query connection metadata over the bus.
> - Current implementations query metadata from an HTTP/HTTPs
> endpoint before connection. Getting rid of that would help
> - Command transport for message bus is implemented (as Jesse
> - It would include transparent support of command invocation, RMI,
> classloading and data streaming
> - We utilize message bus features to make connections over
> Remoting more stable
> - Fault tolerance
> - The messaging layer survives short network outages
> - Nice2Have: We use multiple message bus hosts so they do not
> become a bottleneck
> - Traffic/Request prioritization
> - Currently we have an issue with logging/file transfer
> messaging overloading the channel and blocking system commands. We
> use message bus features to prevent that
> - TBD: More efficient data streaming
> - Implementation:
> - Executable for the agent side
> - Jenkins plugin, which provides the master-side logic and serves
> the agent executable
> - We have a reference implementation for demos
> - E.g: a set of Docker images, which bring up a Jenkins cluster with a
> master and several agents (e.g. with Kubernetes or Docker Compose)
> - It may be somehow aligned with other ongoing activities (e.g. the
> demo could be built on the top of EverGreen distro)
> - TBD: a PoC for Master <=> Master communication
> - In Jenkins project we have some master => master plugins like
> Parameterized Remote Trigger. We could try to use a message bus to
> messages between masters
> - TBD: Streaming agent logs to a log storage over the message bus
> - TBD: Remoting autoupdate over message bus
> - Message bust engine could be a bootstrap library, which loads
> Remoting library from the master after establishing the connection.
> - In Jenkins project we often see issues with update Remoting
> versions on the agent side. Although it would be great to solve the
> on the Remoting side, usage of such bootstrap could be a quick win
> Best regards,
> вторник, 13 февраля 2018 г., 16:53:00 UTC+1 пользователь Jesse Glick
>> On Tue, Feb 13, 2018 at 9:49 AM, Pham Vu Tuan <phamvu...@gmail.com>
>> > I am quite interested in project
>> > "Jenkins Remoting over Message Bus/Queue" and want to understand more
>> > the project.
>> Probably Oleg will give you some depth but to get started
>> understanding the background, look at subclasses of:
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