The previous ordering of defers meant the listener's connWG could fire and wake up other goroutines before the connection closed. Unsure if this caused any real bugs but this commit should make the code more correct.
We noticed that TestUpstreamListener would deadlock sometimes when run
with the race detector. While debugging this issue I found and fixed the
following problems.
1. the net.Listener was not being closed properly when Listener.Stop was
called. This caused the Listener.Serve goroutine to run forever.
Fixed by storing a reference to net.Listener and closing it properly
when Listener.Stop is called.
2. call connWG.Add in the correct place. WaitGroup.Add must be called
before starting a goroutine, not from inside the goroutine.
3. Set metrics config EnableRuntimeMetrics to `false` so that we don't
start a background goroutine in each test for no reason. There is no
way to shutdown this goroutine, and it was an added distraction while
debugging these timeouts.
5. two tests were calling require.NoError from a goroutine.
require.NoError calls t.FailNow, which MUST be called from the main
test goroutine. Instead use t.Errorf, which can be called from other
goroutines and will still fail the test.
6. `assertCurrentGaugeValue` wass breaking out of a for loop, which
would cause the `RWMutex.RUnlock` to be missed. Fixed by calling
unlock before `break`.
The core issue of a deadlock was fixed by https://github.com/armon/go-metrics/pull/124.
* Refactor Service Definition ProxyDestination.
This includes:
- Refactoring all internal structs used
- Updated tests for both deprecated and new input for:
- Agent Services endpoint response
- Agent Service endpoint response
- Agent Register endpoint
- Unmanaged deprecated field
- Unmanaged new fields
- Managed deprecated upstreams
- Managed new
- Catalog Register
- Unmanaged deprecated field
- Unmanaged new fields
- Managed deprecated upstreams
- Managed new
- Catalog Services endpoint response
- Catalog Node endpoint response
- Catalog Service endpoint response
- Updated API tests for all of the above too (both deprecated and new forms of register)
TODO:
- config package changes for on-disk service definitions
- proxy config endpoint
- built-in proxy support for new fields
* Agent proxy config endpoint updated with upstreams
* Config file changes for upstreams.
* Add upstream opaque config and update all tests to ensure it works everywhere.
* Built in proxy working with new Upstreams config
* Command fixes and deprecations
* Fix key translation, upstream type defaults and a spate of other subtele bugs found with ned to end test scripts...
TODO: tests still failing on one case that needs a fix. I think it's key translation for upstreams nested in Managed proxy struct.
* Fix translated keys in API registration.
≈
* Fixes from docs
- omit some empty undocumented fields in API
- Bring back ServiceProxyDestination in Catalog responses to not break backwards compat - this was removed assuming it was only used internally.
* Documentation updates for Upstreams in service definition
* Fixes for tests broken by many refactors.
* Enable travis on f-connect branch in this branch too.
* Add consistent Deprecation comments to ProxyDestination uses
* Update version number on deprecation notices, and correct upstream datacenter field with explanation in docs
There are also a lot of small bug fixes found when testing lots of things end-to-end for the first time and some cleanup now it's integrated with real CA code.
Intention de-duplication in previously merged PR actualy failed some tests that were not caught be me or CI. I ran the test files for state changes but they happened not to trigger this case so I made sure they did first and then fixed. That fixed some upstream intention endpoint tests that I'd not run as part of testing the previous fix.
