[GitHub] tysonnorris opened a new pull request #2656: ActivationExecutor

[gi...@git.apache.org]

tysonnorris opened a new pull request #2656: ActivationExecutor
URL: https://github.com/apache/incubator-openwhisk/pull/2656
 
 
   To support routing loads to a particular execution system based on kind, this PR introduces:
   * ActivationExecutor - an interface that defines the execution process
   * KindBasedLoadBalancer - a LoadBalancer impl that routes kinds to the appropriate ActivationExecutor
   
   Existing behavior remains (LoadBalancerService implements both LoadBalancer and ActivationExecutor), but enables additional ActivationExecutors to be live, and determines the appropriate executor by:
   * priority (in case multiple are available for the same kind)
   * fallback to LoadBalancerService (in case no additional executors are defined for a particular kind)
   
   This will allow things like isolating concurrent-request-tolerant actions to a specific kind, or other types of isolation (long timeout vs short timeout, etc).
 
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