[#323] node: Fix tree svc panic

If a connection has not been established earlier, it stores `nil` in LRU
cache. Cache eviction tries to close every connection (even a `nil` one) and
panics but not crash the app because we are using pools.
That ugly bug also leads to a deadlock where `Unlock` is not called via
`defer` func (and that is the way I found it).

Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
This commit is contained in:
Pavel Karpy 2023-05-04 19:44:49 +03:00
parent 0beb7ccf5c
commit c60029d3b0
2 changed files with 4 additions and 1 deletions

View file

@ -7,6 +7,7 @@ Changelog for FrostFS Node
### Changed
### Fixed
- Copy number was not used for `PUT` requests (#284)
- Tree service panic in its internal client cache (#323)
### Removed
### Updated

View file

@ -36,7 +36,9 @@ var errRecentlyFailed = errors.New("client has recently failed")
func (c *clientCache) init() {
l, _ := simplelru.NewLRU[string, cacheItem](defaultClientCacheSize, func(_ string, value cacheItem) {
_ = value.cc.Close()
if conn := value.cc; conn != nil {
_ = conn.Close()
}
})
c.LRU = *l
}