[fix] Close broker producer created after producer close#131
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RobertIndie
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Nov 30, 2022
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Please rebase to master to avoid broken CI |
BewareMyPower
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### Motivation Close broker producer created after producer close to prevent producers from keeping alive in broker, and fix a race condition here. Race condition sequence: 1. prodcuer.start() is called 2. handleCreateProducer() is called, and runs to right before setCnx() 3. closeAsync() is called and returns directly after getCnx() returns nullptr, so no CloseProducer cmd is sent 4. handleCreateProducer() continues 5. Result: Producer is closed and no CloseProducer cmd is sent to broker ### Modifications * Close broker producer created after producer close * Use mutex to prevent race condition. handleCreateProducer() and closeAsync() should be low frequency operations and using mutex here should not affect performance.
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Motivation
Close broker producer created after producer close to prevent producers from keeping alive in broker, and fix a race condition here.
Race condition sequence:
Modifications
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