27 Commits (b859b0a7a0ddcc9ad8e3b340243e4f87d1d1f57e)

Author	SHA1	Message	Date
Daniel Nephin	5fe7043439	agent/cache: Make all cache options RegisterOptions ... Previously the SupportsBlocking option was specified by a method on the type, and all the other options were specified from RegisterOptions. This change moves RegisterOptions to a method on the type, and moves SupportsBlocking into the options struct. Currently there are only 2 cache-types. So all cache-types can implement this method by embedding a struct with those predefined values. In the future if a cache type needs to be registered more than once with different options it can remove the embedded type and implement the method in a way that allows for paramaterization.	5 years ago
R.B. Boyer	12876983cf	avoid 'panic: Log in goroutine after TestCacheGet_refreshAge has completed' (#7276)	5 years ago
Matt Keeler	dbc48ea3f7	Fixes race condition in Agent Cache (#5796) ... * Fix race condition during a cache get Check the entry we pulled out of the cache while holding the lock had Fetching set. If it did then we should use the existing Waiter instead of calling fetch. The reason this is better than just calling fetch is that fetch re-gets the entry out of the entries map and the previous fetch may have finished. Therefore this prevents erroneously starting a new fetch because we just missed the last update. * Fix race condition fully The first commit still allowed for the following scenario: • No entry existing when checked in getWithIndex while holding the read lock • Then by time we had reached fetch it had been created and finished. * always use ok when returning * comment mentioning the reading from entries. * use cacheHit consistently	6 years ago
Paul Banks	ef9f27cbc8	connect: tame thundering herd of CSRs on CA rotation (#5228) ... * Support rate limiting and concurrency limiting CSR requests on servers; handle CA rotations gracefully with jitter and backoff-on-rate-limit in client * Add CSR rate limiting docs * Fix config naming and add tests for new CA configs	6 years ago
Paul Banks	0638e09b6e	connect: agent leaf cert caching improvements (#5091) ... * Add State storage and LastResult argument into Cache so that cache.Types can safely store additional data that is eventually expired. * New Leaf cache type working and basic tests passing. TODO: more extensive testing for the Root change jitter across blocking requests, test concurrent fetches for different leaves interact nicely with rootsWatcher. * Add multi-client and delayed rotation tests. * Typos and cleanup error handling in roots watch * Add comment about how the FetchResult can be used and change ca leaf state to use a non-pointer state. * Plumb test override of root CA jitter through TestAgent so that tests are deterministic again! * Fix failing config test	6 years ago
Paul Banks	0589525ae9	agent: Don't leave old errors around in cache (#5094) ... * Fixes #4480. Don't leave old errors around in cache that can be hit in specific circumstances. * Move error reset to cover extreme edge case of nil Value, nil err Fetch	6 years ago
Paul Banks	298af6dca7	Quick fix for cache age flakiness in CI	6 years ago
Paul Banks	88388d760d	Support Agent Caching for Service Discovery Results (#4541) ... * Add cache types for catalog/services and health/services and basic test that caching works * Support non-blocking cache types with Cache-Control semantics. * Update API docs to include caching info for every endpoint. * Comment updates per PR feedback. * Add note on caching to the 10,000 foot view on the architecture page to make the new data path more clear. * Document prepared query staleness quirk and force all background requests to AllowStale so we can spread service discovery load across servers.	6 years ago
Paul Banks	8cbeb29e73	Fixes #4421: General solution to stop blocking queries with index 0 (#4437) ... * Fix theoretical cache collision bug if/when we use more cache types with same result type * Generalized fix for blocking query handling when state store methods return zero index * Refactor test retry to only affect CI * Undo make file merge * Add hint to error message returned to end-user requests if Connect is not enabled when they try to request cert * Explicit error for Roots endpoint if connect is disabled * Fix tests that were asserting old behaviour	6 years ago
Paul Banks	2e223ea2b7	Fix hot loop in cache for RPC returning zero index.	7 years ago
Paul Banks	43b48bc06b	Get agent cache tests passing without global hit count (which is racy). ... Few other fixes in here just to get a clean run locally - they are all also fixed in other PRs but shouldn't conflict. This should be robust to timing between goroutines now.	7 years ago
Mitchell Hashimoto	6b1e0a3003	agent/cache: always schedule the refresh	7 years ago
Mitchell Hashimoto	cf9b377c78	agent/cache: always fetch with minimum index of 1 at least	7 years ago
Mitchell Hashimoto	839d3c323d	agent/cache: correct test name	7 years ago
Mitchell Hashimoto	45e49f31de	agent/cache: change behavior to return error rather than retry ... The cache behavior should not be to mask errors and retry. Instead, it should aim to return errors as quickly as possible. We do that here.	7 years ago
Mitchell Hashimoto	311d503fb0	agent/cache: perform backoffs on error retries on blocking queries	7 years ago
Mitchell Hashimoto	cfcd733609	agent/cache: implement refresh backoff	7 years ago
Mitchell Hashimoto	02b20a0353	agent/cache: address feedback, clarify comments	7 years ago
Mitchell Hashimoto	3b550d2b72	agent/cache: rework how expiry data is stored to be more efficient	7 years ago
Mitchell Hashimoto	595193a781	agent/cache: initial TTL work	7 years ago
Mitchell Hashimoto	1df99514ca	agent/cache: send the RefreshTimeout into the backend fetch	7 years ago
Mitchell Hashimoto	db4c47df27	agent/cache: on error, return from Get immediately, don't block forever	7 years ago
Mitchell Hashimoto	fcb15e15ae	agent/cache: support timeouts for cache reads and empty fetch results	7 years ago
Mitchell Hashimoto	c329b4cb34	agent/cache: partition by DC/ACL token	7 years ago
Mitchell Hashimoto	e3c1162881	agent/cache: Reorganize some files, RequestInfo struct, prepare for partitioning	7 years ago
Mitchell Hashimoto	975be337a9	agent/cache: blank cache key means to always fetch	7 years ago
Mitchell Hashimoto	1cfb0f1922	agent/cache: initial kind-of working cache	7 years ago