luxolus/open-nomad
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Author SHA1 Message Date
Michael Schurter 64efc3d301 Emit events before long operations 
Append when there's nothing blocking between appending and sending an
update to the server.
 2018-10-16 16:53:30 -07:00
Michael Schurter a2b696c4cf Use a semaphore to block until watcher exits 2018-10-16 16:53:30 -07:00
Michael Schurter a73162c977 ar: use multierror in update hook loop 
Make it match TaskRunner update hook behavior
 2018-10-16 16:53:30 -07:00
Michael Schurter a7b427718c tr: refactor EmitEvents into Emit+Append 
* UpdateState: set state, append event, persist, update servers
* EmitEvent: append event, persist, update servers
* AppendEvent: append event, persist

AppendEvent may not even have to persist, but for the sake of
correctness I'm going with that for now.
 2018-10-16 16:53:30 -07:00
Michael Schurter 93f3ac9ed6 ar: create health setting shim for health watcher 2018-10-16 16:53:30 -07:00
Michael Schurter 4d5aaac6d2 fix detection of task transitioning to running 2018-10-16 16:53:30 -07:00
Michael Schurter 4136e59f79 arv2: implement alloc health watching 
Also remove initial alloc from broadcaster as it just caused useless
extra processing.
 2018-10-16 16:53:30 -07:00
Michael Schurter 5c5c6dc41b refactor ar hooks into their own files 
minimize passed dependencies to ease testing
 2018-10-16 16:53:30 -07:00
Michael Schurter 0bbf3a93ee make AllocBroadcaster easier to use 
And test thoroughly.
 2018-10-16 16:53:30 -07:00
Michael Schurter 9d1ea3b228 client: hclog-ify most of the client 
Leaving fingerprinters in case that interface changes with plugins.
 2018-10-16 16:53:30 -07:00
Michael Schurter e42154fc46 implement stopping, destroying, and disk migration 
* Stopping an alloc is implemented via Updates but update hooks are
  *not* run.
* Destroying an alloc is a best effort cleanup.
* AllocRunner destroy hooks implemented.
* Disk migration and blocking on a previous allocation exiting moved to
  its own package to avoid cycles. Now only depends on alloc broadcaster
  instead of also using a waitch.
* AllocBroadcaster now only drops stale allocations and always keeps the
  latest version.
* Made AllocDir safe for concurrent use

Lots of internal contexts that are currently unused. Unsure if they
should be used or removed.
 2018-10-16 16:53:30 -07:00
Michael Schurter 4236255686 lots of comment/log fixes 2018-10-16 16:53:30 -07:00
Michael Schurter 5749ede04e keep forgetting lxc 2018-10-16 16:53:30 -07:00
Michael Schurter 357641c364 persist alloc state on changes, not periodically 
Allow alloc and task runners to persist their own state when something
changes instead of periodically syncing all state.
 2018-10-16 16:53:30 -07:00
Michael Schurter 820af27171 wrap boltdb in a write deduplicator 
Saves a tiny bit of cpu and some IO. Sadly doesn't prevent all IO on
duplicate writes as the transactions are still created and committed.

$ go test -bench=. -benchmem
goos: linux
goarch: amd64
pkg: github.com/hashicorp/nomad/helper/boltdd
BenchmarkWriteDeduplication_On-4             500           4059591 ns/op           23736 B/op         56 allocs/op
BenchmarkWriteDeduplication_Off-4            300           4115319 ns/op           25942 B/op         55 allocs/op
 2018-10-16 16:53:30 -07:00
Michael Schurter 990228a6e2 wip wrap boltdb to get path information 
finished but doesn't handle deleting deeply nested buckets
 2018-10-16 16:53:30 -07:00
Michael Schurter a3fe0510d1 Move all encoding and put deduping into state db 
Still WIP as it does not handle deletions.
 2018-10-16 16:53:30 -07:00
Michael Schurter 533bc93b3a implement all boltdb interactions behind StateDB 2018-10-16 16:53:30 -07:00
Michael Schurter d890de036a tr: persist hook state whenever it changes 2018-10-16 16:53:30 -07:00
Michael Schurter fae5e89a0e artifacts: don't emit event when there's no artifacts 2018-10-16 16:53:30 -07:00
Michael Schurter 5383d20505 removing old restoration path before api change 2018-10-16 16:53:30 -07:00
Michael Schurter a5d3e3fb0a Implement alloc updates in arv2 
Updates are applied asynchronously but sequentially
 2018-10-16 16:53:30 -07:00
Michael Schurter 39b3f3a85b call handle.Network() instead of storing it 2018-10-16 16:53:30 -07:00
Michael Schurter 7132b67c1e Add Network method to Handle interface 
Should probably be moved to an Inspect method in the Driver Plugin world
 2018-10-16 16:53:30 -07:00
Michael Schurter a4b4d7b266 consul service hook 
Deregistration works but difficult to test due to terminal updates not
being fully implemented in the new client/ar/tr.
 2018-10-16 16:53:29 -07:00
Michael Schurter 5be982e674 restore vault client 2018-10-16 16:53:29 -07:00
Michael Schurter ce04915c9f log before killing tasks 2018-10-16 16:53:29 -07:00
Michael Schurter a2bf851805 no need to TaskStateUpdated to return an error 
also updated comments
 2018-10-16 16:53:29 -07:00
Alex Dadgar fd3bc1bd39 Update state with server 2018-10-16 16:53:29 -07:00
Alex Dadgar bc905cc61d Define and thread through state updating interface 2018-10-16 16:53:29 -07:00
Michael Schurter 9a63d6103d tr: add validate task hook 2018-10-16 16:53:29 -07:00
Michael Schurter 7f4ec50906 missed locking around c.allocs access 2018-10-16 16:53:29 -07:00
Alex Dadgar c93cfc89c0 wip 2018-10-16 16:53:29 -07:00
Alex Dadgar 7ddc0eb65c Fix deadlock 2018-10-16 16:53:29 -07:00
Alex Dadgar 3779077052 Remove SetState from interface 2018-10-16 16:53:29 -07:00
Alex Dadgar e1ba73b515 compile 2018-10-16 16:53:29 -07:00
Michael Schurter 6ebdf532ea wip split event emitting and state transitions 2018-10-16 16:53:29 -07:00
Michael Schurter 516d641db0 client: implement all-or-nothing alloc restoration 
Restoring calls NewAR -> Restore -> Run

NewAR now calls NewTR
AR.Restore calls TR.Restore
AR.Run calls TR.Run
 2018-10-16 16:53:29 -07:00
Alex Dadgar e401c660e7 Implement lifecycle hooks on the task runner 2018-10-16 16:53:29 -07:00
Alex Dadgar 89b4ba9cc8 comments 2018-10-16 16:53:29 -07:00
Alex Dadgar 86e81947b4 Hook renames 2018-10-16 16:53:29 -07:00
Alex Dadgar 2599cf9d74 remove comment 2018-10-16 16:53:29 -07:00
Alex Dadgar 88aa0299a9 Template hook 2018-10-16 16:53:29 -07:00
Alex Dadgar c9765deff1 address comments 2018-10-16 16:53:29 -07:00
Alex Dadgar 80f6ce50c0 vault hook 2018-10-16 16:53:29 -07:00
Michael Schurter 30d377eba4 tr: improve skip log line 2018-10-16 16:53:29 -07:00
Michael Schurter ef213b864b tr: pass context to hooks 2018-10-16 16:53:29 -07:00
Michael Schurter 3a4f387fd3 tr: fix setting done in existing hooks 2018-10-16 16:53:29 -07:00
Michael Schurter b360f6f96e fix hclog level 2018-10-16 16:53:29 -07:00
Michael Schurter ae89b7da95 reimplement success state for tr hooks and state persistence 
splits apart local and remote persistence

removes some locking *for now*
 2018-10-16 16:53:29 -07:00