Commit Graph

18 Commits

Author SHA1 Message Date
Daniel Nephin ffefcdc025 streaming: support X-Cache-Hit header
If a value was already available in the local view the request is considered a cache hit.
If the materialized had to wait for a value, it is considered a cache miss.
2021-06-28 17:29:23 -04:00
Daniel Nephin 4fb6c5a137 submatview: fix a bug with Store.Get
When info.Timeout is 0, it should have no timeout. Previously it was using a 0 duration timeout
which caused it to return without waiting.

This bug was masked by using a timeout in the tests. Removing the timeout caused the tests to fail.
2021-06-03 17:48:44 -04:00
Daniel Nephin 2dcfe4a0d5 submatview: improve a couple comments 2021-06-01 17:49:31 -04:00
Daniel Nephin 65da18a986 submatview: fix godoc and comment typos
Co-authored-by: Paul Banks <banks@banksco.de>
2021-04-28 12:27:38 -04:00
Daniel Nephin 872bb9db14 submatview: avoid sorting results unnecessarily
Previous getFromView would call view.Result when the result may not have been returned
(because the index is updated past the minIndex. This would allocate a slice and sort it
for no reason, because the values would never be returned.

Fix this by re-ordering the operations in getFromView.

The test changes in this commit were an attempt to cover the case where
an update is received but the index does not exceed the minIndex.
2021-04-27 19:03:17 -04:00
Daniel Nephin cf8520d85c submatview: only return materializer from getEntry
Also rename it to readEntry now that it doesn't return the entire entry. Based on feedback
in PR review, the full entry is not used by the caller, and accessing the fields wouldn't be
safe outside the lock, so it is safer to return only the Materializer
2021-04-27 19:03:17 -04:00
Daniel Nephin 768e0a7d03 submatview: godoc 2021-04-27 19:03:17 -04:00
Daniel Nephin 2dfacb2d49 rpcclient/health: convert tests to the new submatview.Store interface
Also fixes a minor data race in Materializer. Capture the error before
releasing the lock.
2021-04-27 19:03:17 -04:00
Daniel Nephin 95c92343e4 rpcclient/health: fix data race in a test
The idleTTL was being written and read concurrently. Instead move the idleTTL to a struct
field so that when one test patches the TTL it does not impact others.

The background goroutines for the store can outlive a test because context cancellation
is async.
2021-04-27 19:03:17 -04:00
Daniel Nephin 440ab3e0ae submatview: move error return to NewMaterializer
So that we don't have to create views ahead of time, when we will never use that view.
2021-04-27 19:03:16 -04:00
Daniel Nephin d23fd66aeb submatview: test store with Get and Notify calls together 2021-04-27 19:03:16 -04:00
Daniel Nephin 54a402d772 submatview: more test cases for Store.Get
And simplify the return value by using a Result type.
2021-04-27 19:03:16 -04:00
Daniel Nephin f7190b1c61 submatview: reduce the getFromView implementation
Remove View.Result error return value, it was always nil, and seems like it will likely always remain nill
since it is simply reading a stored value.

Also replace some cache types with local types.
2021-04-27 19:03:16 -04:00
Daniel Nephin f4573177ba submatview: track requests instead of notifiers
And only start expiration time when the last request ends. This makes tracking expiry simpler, and
ensures that no entry can be expired while there are active requests.
2021-04-27 19:03:16 -04:00
Daniel Nephin 468469bd27 submatview: set up expiry of materializers 2021-04-27 19:03:16 -04:00
Daniel Nephin f46a830e48 submatview: setup testing structure 2021-04-27 19:03:16 -04:00
Daniel Nephin e4c503c28e submatview: rough outline of the Get and Notify methods. 2021-04-27 19:03:16 -04:00
Daniel Nephin c23e98a5e6 submatview: setup the interface for the store 2021-04-27 19:03:15 -04:00