consul/sdk
Pierre Souchay 5703aadb59
[BUGFIX] Fix race condition in freeport (#7567)
This removes a race condition in reset since pendingPorts can be set to nil in reset()

If ticker is hit at wrong time, it would crash the unit test.

We ensure in reset to avoid this race condition by cancelling the goroutine using
killTicker chan.

We also properly clean up eveything, so garbage collector can work as expected.

To reproduce existing bug:
`while go test -timeout 30s github.com/hashicorp/consul/sdk/freeport -run '^(Test.*)$'; do go clean -testcache; done`

Will crash after a few 10s runs on my machine.

Error could be seen in unit tests sometimes:

[INFO] freeport: resetting the freeport package state
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x1125536]

goroutine 25 [running]:
container/list.(*List).Len(...)
	/usr/local/Cellar/go/1.14/libexec/src/container/list/list.go:66
github.com/hashicorp/consul/sdk/freeport.checkFreedPortsOnce()
	/Users/p.souchay/go/src/github.com/hashicorp/consul/sdk/freeport/freeport.go:157 +0x86
github.com/hashicorp/consul/sdk/freeport.checkFreedPorts()
	/Users/p.souchay/go/src/github.com/hashicorp/consul/sdk/freeport/freeport.go:147 +0x71
created by github.com/hashicorp/consul/sdk/freeport.initialize
	/Users/p.souchay/go/src/github.com/hashicorp/consul/sdk/freeport/freeport.go:113 +0x2cf
FAIL	github.com/hashicorp/consul/sdk/freeport	1.607s
2020-04-01 13:14:33 -05:00
..
freeport [BUGFIX] Fix race condition in freeport (#7567) 2020-04-01 13:14:33 -05:00
testutil Testing updates to support namespaced testing of the agent/xds… (#7185) 2020-02-03 09:26:47 -05:00
.golangci.yml ci: Use golangci-lint for linting 2020-03-17 13:43:40 -04:00
README.md Move internal/ to sdk/ (#5568) 2019-03-27 08:54:56 -04:00
go.mod Allow users to configure either unstructured or JSON logging (#7130) 2020-01-28 17:50:41 -06:00
go.sum Allow users to configure either unstructured or JSON logging (#7130) 2020-01-28 17:50:41 -06:00

README.md

Internal SDK

Please note that this folder, while public, is not meant for new consumers of these libraries; this should currently be considered an internal, not external, SDK. It is public due to existing needs from other HashiCorp software. The tags in this folder will stay at the 0.x.y level; accordingly users should expect that things can move around, disappear, or change API at any time.