balancergroup: Propagate balancer.BuildOptions to child policies #4184
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menghanl
approved these changes
Feb 4, 2021
| @@ -590,16 +594,20 @@ func (s) TestBalancerGroup_start_close(t *testing.T) { | |||
| // whenever it gets an address update. It's expected that start() doesn't block | |||
| // because of deadlock. | |||
| func (s) TestBalancerGroup_start_close_deadlock(t *testing.T) { | |||
| const balancerName = "stub-TestBalancerGroup_start_close_deadlock" | |||
| stub.Register(balancerName, stub.BalancerFuncs{}) | |||
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Another option is to export stub.bb, and add a NewBB(). So you don't need to register and get.
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I will send a separate PR for that since I would have to touch other existing call sites as well. Thanks.
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| // Send an empty clientConn state change. This should trigger the | ||
| // verification of the buildOptions being passed to the child policy. | ||
| bg.UpdateClientConnState(testBalancerIDs[0], balancer.ClientConnState{}) |
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Does this function not return the error from the stub?
If it does, we don't need ccsCh, right?
I think balancergroup calls the methods inline.
Unlike e.g. cluster_manager, where we get errors from bg.UpdateClientConnState, but we don't aggregate and return that error. So ccsCh would be necessary.
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Thanks for the catch. Done.
This was referenced Mar 8, 2021
This was referenced Mar 16, 2021
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API changes:
balancergroup.New()is modified to takebalancer.BuildOptionsas its second argument.balancer.BuildOptionsis passed to child policies when they are constructed.balancergroup, it is better to take thebalancer.BuildOptionsas part ofNew()instead of as part ofAdd().Other changes:
clustermanager,edsandweightedtargetLB policies to passbalancer.BuildOptionsto thebalancergroup.balancer.BuildOptionsare propagated properly.testutils.TestConstBalancerBuilderand usestub.Balancerinstead.Fixes #4185