component level deploys

[kevindrosendahl]

now with semver/branch references, it's interesting to be able to redeploy a subsystem of the same version of the system.

should be able to do something like:

latticectl deploy --path /foo/bar

which will redeploy the whole /foo/bar subsystem using the same version of the system as is currently deployed

[kevindrosendahl]

starting to lay down code and feel it out

[kevindrosendahl]

required changes:

• move component resolution into build controller
• when you say deploy version, create a deploy custom resource simply with the version (and maybe the path and context)
• build controller will resolve the definition

[kevindrosendahl]

still deep in the refactoring, no clear blockers so far

[kevindrosendahl]

current milestone goal is to get builds working again only allowing you to deploy the whole system (i.e. no external interface change) but with all of the components properly shuffled around into their new homes.

from there adding in path-ed deploys should be a clear path

[kevindrosendahl]

passed the above mentioned milestone last week.

had to take a bit of a detour to change up the data structures that represent a system as access patterns have changed (used to be a build/deploy would operate on an entire system tree, now we're dealing with subpaths, both iterating on subpaths and replacing whole subpaths of the tree).

that work is mostly in place now so should be able to push this past the finish line in the next few days time permitting

[kevindrosendahl]

mostly everything working. now just need to add proper locking then do a tidying up sweep

[kevindrosendahl]

code is complete, adding a few final tests around template resolution but pretty much ready to merge

some (mostly breaking) changes in the api:

• build:
  • added state accepted
  • services is now workloads and returns builds for all leaf paths (both services and jobs)
  • workload sidecars will be omitted from the body if empty
• deploy:
  • buildId is now nullable
• log options
  • add proper camel casing
  • omit unset (or default value) values from json
• node pool
  • path is now always a /component:subcomponent path
  • change failure_mode to failureMode, omit if null
• POST requests
  • omit some values if null
• secret
  • no longer has path and name, path is now /component:subcomponent
• system
  • no longer contains services

[kevindrosendahl]

fixed in https://github.com/mlab-lattice/lattice/pull/220