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eds/lrs: handle nil when LRS is disabled #4086

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merged 3 commits into from Dec 7, 2020

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menghanl
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@menghanl menghanl commented Dec 7, 2020

Checking nil before calling the methods. Even though the implementation's receiver checks for nil, the interface nil doesn't have the implementation type, and won't call the implementation's receiver.

https://play.golang.org/p/LilYpHAr84j

edsb := newEDSBalancerImpl(cc, nil, lsWrapper, nil)
edsb.enqueueChildBalancerStateUpdate = edsb.updateState

// Two localities, each with one backend.
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Nit: 1 locality now

clab1 := testutils.NewClusterLoadAssignmentBuilder(testClusterNames[0], nil)
clab1.AddLocality(testSubZones[0], 1, 0, testEndpointAddrs[:1], nil)
edsb.handleEDSResponse(parseEDSRespProtoForTesting(clab1.Build()))
sc1 := <-cc.NewSubConnCh
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sc?

Comment on lines 750 to 752
// We create an xdsClientWrapper with a dummy xdsClientInterface which only
// implements the LoadStore() method to return the underlying load.Store to
// be used.
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This doesn't make 100% sense anymore I think.

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3 participants