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Switches to using a read lock for the agent's RPC dispatcher. 

This prevents RPC calls from getting serialized in this spot.

Fixes #3376
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James Phillips 2017-08-09 18:51:55 -07:00
parent 6194dcf36f
commit f51d56c80c
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2 changed files with 4 additions and 2 deletions
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2
CHANGELOG.md
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@ -5,6 +5,8 @@ FEATURES:
IMPROVEMENTS:
* agent: Switched to using a read lock for the agent's RPC dispatcher, which prevents RPC calls from getting serialized. [GH-3376]
BUG FIXES:
## 0.9.2 (August 9, 2017)

4
agent/agent.go
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@ -956,7 +956,7 @@ func (a *Agent) registerEndpoint(name string, handler interface{}) error {
// RPC is used to make an RPC call to the Consul servers
// This allows the agent to implement the Consul.Interface
func (a *Agent) RPC(method string, args interface{}, reply interface{}) error {
a.endpointsLock.Lock()
a.endpointsLock.RLock()
// fast path: only translate if there are overrides
if len(a.endpoints) > 0 {
p := strings.SplitN(method, ".", 2)
@ -964,7 +964,7 @@ func (a *Agent) RPC(method string, args interface{}, reply interface{}) error {
method = e + "." + p[1]
}
}
a.endpointsLock.Unlock()
a.endpointsLock.RUnlock()
return a.delegate.RPC(method, args, reply)
}