This is a monster patch that finally gets the iterative pkg auto edges
working the way they should. For each file, as soon as one matches, we
don't want to keep add dependencies on other file objects under that
tree structure. This reduces the number of necessary edges considerably,
and allows the graph to run more concurrently.
This allows for resources to automatically add necessary edges to the
graph so that the event system doesn't have to work overtime due to
sub-optimal execution order.
Naming the resources "type" was a stupid mistake, and is a huge source
of confusion when also talking about real types. Fix this before it gets
out of hand.
This is the third main feature of this system. The code needs a bunch of
polish, but it actually all works :)
I've tested this briefly with N <= 3.
Currently you have to build your own etcd cluster. It's quite easy, just
run `etcd` and it will be ready. I usually run it in a throw away /tmp/
dir so that I can blow away the stored data easily.
This is still a dirty prototype, so please excuse the mess. Please
excuse the fact that this is a mega patch. Once things settle down this
won't happen any more.
Some of the changes squashed into here include:
* Merge vertex loop with type loop
(The file watcher seems to cache events anyways)
* Improve pgraph library
* Add indegree, outdegree, and topological sort with tests
* Add reverse function for vertex list
* Tons of additional cleanup!
Amazingly, on my first successful compile, this seemed to run!
A special thanks to Ira Cooper who helped me talk through some of the
algorithmic decisions and for his help in finding better ones!
If a file was supposed to exist in a directory, and it didn't exist yet,
when it gets created, we should notice, and cause an event so that we
wake up and actually see about then creating that file!
This is a prototype that i'm attempting to "release early". Expect a lot
of changes! It is intended to be a config management tool that will:
* be event based
* execute actions in parallel
* function as a distributed system
There are a bunch more design ideas going into this, please stay tuned!
