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networkdb: Use write lock in handleNodeEvent

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`handleNodeEvent` is calling `changeNodeState` which writes to various
maps on the ndb object.
Using a write lock prevents a panic on concurrent read/write access on
these maps.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
This commit is contained in:
Brian Goff 2018-04-11 21:28:29 -04:00
parent e8802d9117
commit bc465326fe
1 changed files with 2 additions and 2 deletions
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4
libnetwork/networkdb/delegate.go
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@ -21,8 +21,8 @@ func (nDB *NetworkDB) handleNodeEvent(nEvent *NodeEvent) bool {
// time.
nDB.networkClock.Witness(nEvent.LTime)
nDB.RLock()
defer nDB.RUnlock()
nDB.Lock()
defer nDB.Unlock()
// check if the node exists
n, _, _ := nDB.findNode(nEvent.NodeName)